A device and method for intelligent real-time measurement of subgrade pavement rolling effect

Abstract

This invention belongs to the field of roadbed construction technology, specifically a smart real-time measurement device and method for roadbed and pavement compaction effect. It includes a road roller body for roadbed and pavement compaction construction, comprising a power vehicle body and a cab mounted on the power vehicle body. This smart real-time measurement device and method for roadbed and pavement compaction effect, by setting up a measurement control mechanism and a compaction degree measurement mechanism, allows the compaction degree measurement mechanism to move via the measurement control mechanism during operation. During the measurement process, all monitoring data from the pressure sensor is fed back in real-time via a wireless communication module to a remote location for data recording and storage, and then fed back to the construction personnel. This solves the problems of existing technologies that use manual core drilling to detect the compaction degree of roadbeds and pavements, which are destructive to the pavement, have low detection efficiency, consume excessive manpower and resources, and produce random data.

Description

Technical Field

[0001] This invention relates to the field of roadbed construction technology, and in particular to an intelligent real-time measurement device and method for roadbed and pavement compaction effect. Background Technology

[0002] Compaction, as a crucial step in road construction, is a key factor determining pavement quality. Effective compaction improves the strength, rigidity, and stability of the roadbed and pavement, while inadequate compaction leads to cracks, potholes, and other defects, severely impacting pavement performance and durability. Therefore, controlling compaction quality is a critical issue in this field.

[0003] Traditional compaction quality control involves manually drilling core samples after compaction to test the compaction degree of the subgrade and pavement. This method has several drawbacks, including damage to the pavement, low testing efficiency, high manpower and material costs, and randomness in the test data. Therefore, there is a need for an intelligent real-time measurement device and method for subgrade and pavement compaction effects. Summary of the Invention

[0004] The existing method of manually drilling core samples to detect the compaction of roadbed and pavement has technical problems such as being destructive to the pavement, having low detection efficiency, consuming manpower and resources, and having random detection data. This invention proposes an intelligent real-time measurement device and method for roadbed and pavement compaction effect.

[0005] The present invention proposes an intelligent real-time measurement device for roadbed and pavement compaction effect, which includes a road roller body for roadbed and pavement compaction construction. The road roller body consists of a power vehicle body, a cab set on the power vehicle body, a vibrating wheel frame set at the front end of the power vehicle body, and a road roller wheel inside the vibrating wheel frame.

[0006] The inner wall of the cab is fixedly installed with a controller with a display screen and an audible and visual alarm. The audible and visual alarm is electrically connected to the controller via a cable. The upper surface of the cab is fixedly installed with a wireless communication module that is electrically connected to the controller via a cable. The wireless communication module is connected to a remote monitoring platform via a cloud server.

[0007] The lower surface of the vibrating wheel frame is provided with a measurement and control mechanism. The two measurement and control mechanisms are symmetrically distributed with the axis of the vibrating wheel frame as the center. The surface of the measurement and control mechanism is provided with a compaction measurement mechanism.

[0008] The measurement and control mechanism is used to control and drive the compaction measurement mechanism to measure the compaction degree of the road surface after it has been compacted by the roller wheels.

[0009] Among them, the compaction measurement device is used to measure the compaction degree of the road surface in real time during roadbed construction.

[0010] Preferably, the measurement and control mechanism includes a drive groove formed on the lower surface of the vibrating wheel frame. The inner wall of the drive groove is T-shaped. Fixed bearing seats with surfaces flush with the surface of the vibrating wheel frame are fixedly connected to the inner walls of both ends of the drive groove. A first limit switch is fixedly installed on the surface of one of the fixed bearing seats.

[0011] The inner wall of the fixed bearing seat is rotatably connected to a drive screw via a bearing. The surface of the drive screw is provided with a left helical groove and a right helical groove centered on the axis of the drive screw.

[0012] Preferably, a speed reducer is fixedly mounted on the surface of the vibrating wheel frame, and a drive motor electrically connected to the controller and the first limit switch via a cable is fixedly mounted on the surface of the speed reducer. The output shaft of the drive motor is fixedly connected to the power input end of the speed reducer, and one end of the drive screw is fixedly connected to the power output end of the speed reducer.

[0013] Preferably, the surface of the drive screw is threaded with two symmetrically distributed drive sliders through a left helical groove and a right helical groove, and the surface of the drive slider is adapted to slide with the inner wall of the drive groove.

[0014] The surface of the drive slider is slidably connected to a support connecting seat. The surface of the support connecting seat is slidably connected to the inner wall of the drive groove. The surface of the support connecting seat is provided with a guide limiting groove with a convex inner wall. The inner wall of the guide limiting groove is slidably connected to a guide limiting block. The surface of the guide limiting block is fixedly connected to the lower surface of the drive slider.

[0015] Preferably, the surface of the support connecting seat is fixedly connected to two symmetrically distributed fixed rods, the surface of the drive slider is provided with connecting holes that are slidably connected to the surfaces of the two fixed rods, the surface of the fixed rods is sleeved with damping springs, and the two ends of the two damping springs are respectively fixedly connected to the surfaces of the drive slider and the support connecting seat.

[0016] The damping compression stroke of the damping spring is 2 mm.

[0017] Preferably, the surface of the support connecting seat is provided with a clearance hole that fits into the surface of the drive screw, and one end of the support connecting seat extends to the lower surface of the vibrating wheel frame.

[0018] The surface of the support connecting seat is rotatably connected to a drive boom via a pin. One end of the drive boom is rotatably connected to a connecting column via a pin. The bottom of the connecting column is fixedly connected to a mounting plate. The upper surface of the mounting plate is fixedly connected to a guide column. The surface of the vibrating wheel frame is provided with a guide hole that mates with the guide column. One end of the guide column extends through the guide hole to the upper surface of the vibrating wheel frame.

[0019] Preferably, the compaction measuring mechanism includes a wheel column that is slidably connected to the surface of the mounting plate. The two wheel columns are symmetrically distributed about the axis of the mounting plate. The surface of the wheel column is T-shaped, and a limiting ring that is inserted into the surface of the mounting plate is fixedly sleeved on the surface of the wheel column.

[0020] Preferably, one end of the wheel column extends to the lower surface of the mounting plate, and a positioning wheel frame is fixedly connected to one end of the wheel column, with a positioning contact wheel installed on the inner wall of the positioning wheel frame.

[0021] The surface of the positioning wheel frame is U-shaped, and a pressure spring is sleeved on the surface of the wheel column. The two ends of the pressure spring are fixedly connected to the upper surface of the positioning wheel frame and the lower surface of the mounting plate, respectively.

[0022] An L-shaped sensing plate is fixedly connected to the upper surface of the mounting plate. The surface of the sensing plate is sleeved with the surface of one of the wheel posts. A second limit switch, which is electrically connected to the drive motor via a cable, is fixedly installed on the surface of the sensing plate. One end of the second limit switch extends to the top of the wheel post.

[0023] Preferably, a pressurized oil tank is fixedly installed on the surface of the mounting plate, and a pressurized oil pipe is fixedly connected to the upper surface of the pressurized oil tank. The pressurized oil pipe is electrically connected to the controller through a solenoid valve, and one end of the pressurized oil pipe is connected to the hydraulic system on the road roller body.

[0024] A pressure sensor is fixedly installed on the upper surface of the pressurized oil tank and electrically connected to the controller via a cable. The pressure detection end of the pressure sensor penetrates and extends to the inner wall of the pressurized oil tank.

[0025] A pressurizing piston is slidably connected to the inner wall of the pressurizing oil tank. A piston rod is fixedly connected to the lower surface of the pressurizing piston. A pressure-bearing spring is sleeved on the surface of the piston rod. The two ends of the pressure-bearing spring are fixedly connected to the lower surface of the pressurizing piston and the inner bottom wall of the pressurizing oil tank, respectively.

[0026] One end of the piston rod passes through and extends to the lower surface of the pressurized oil tank. A detection wheel frame is fixedly connected to one end of the piston rod, and a compaction test steel plate wheel is installed on the inner wall of the detection wheel frame.

[0027] Preferably, a measurement method for an intelligent real-time measurement device for roadbed and pavement compaction effects includes the following steps:

[0028] Step 1: During the compaction of the roadbed and pavement, the road roller is used to compact the roadbed and pavement. During the compaction process, when it is necessary to measure the degree of compaction, the driver in the cab controls the corresponding measurement control mechanism through the controller according to the movement direction of the roller wheels on the road roller body.

[0029] Specifically, the controller controls the corresponding drive motor to start rotating in the forward direction. The drive motor drives the drive screw to rotate through the reducer. The drive screw drives the two drive sliders to move simultaneously towards the axis of the drive screw through the left and right helical grooves on its surface. The two drive sliders simultaneously drive the two support connecting seats to move, which in turn drives the two drive booms to move. The simultaneous movement of the two drive booms drives the mounting plate to move downward.

[0030] Step 2: The two drive booms from Step 1 simultaneously drive the mounting plate downwards, which in turn drives the wheel column, positioning wheel frame, and positioning contact wheel downwards. After the positioning contact wheel contacts the roadbed surface being tested, it pushes the wheel column and positioning wheel frame upwards to compress the pressure spring. After the wheel column moves upwards and contacts the second limit switch, the normally closed contact of the second limit switch opens, controlling the drive motor to stop rotating forward.

[0031] While the positioning wheel frame and positioning contact wheel are in contact with the roadbed surface, the compaction degree detection steel plate wheel is also in contact with the roadbed surface. As the positioning wheel frame and wheel column move upward, the detection wheel frame and piston rod simultaneously drive the pressure piston to move upward in the pressure tank, pushing and squeezing the hydraulic oil inside the pressure tank. After the positioning wheel frame and wheel column stop moving, the pressure sensor detects the hydraulic oil pressure inside the pressure tank. Then, the controller controls the solenoid valve on the pressure oil pipe to open, and the hydraulic system on the road roller pumps hydraulic oil into the pressure tank to pressurize the hydraulic oil inside. After the pressurized hydraulic oil pressure reaches the preset pressure for compaction degree measurement, the controller controls the solenoid valve on the pressure oil pipe to close.

[0032] Step 3: After adjusting the hydraulic oil pressure inside the pressurization tank, the driver operates the roller to compact the roadbed again. During the compaction process, the compaction detection steel wheel applies pressure to the road surface, and the hydraulic oil pressure inside the pressurization tank is monitored in real time by a pressure sensor. When the compaction meets the standard, the hydraulic oil pressure inside the pressurization tank fluctuates within the set range. When the compaction does not meet the standard, the compaction detection steel wheel sinks into the road surface, driving the pressurization piston to move downwards inside the pressurization tank, reducing the hydraulic oil pressure inside the tank. When the pressure exceeds the value range set by the controller, the controller automatically activates the audible and visual alarm in the cab to alert the driver that the compaction is not up to standard. At the same time, throughout the entire compaction detection process, all detection data from the pressure sensor is transmitted in real time to the remote monitoring platform via the wireless communication module for data recording, storage, and feedback to the construction personnel.

[0033] The beneficial effects of this invention are as follows:

[0034] 1. By setting up a measurement control mechanism and a compaction measurement mechanism, during use, the measurement control mechanism drives the compaction measurement mechanism to move and contact the road surface to measure the compaction degree of the road surface. The pressure sensor in the compaction measurement mechanism monitors the hydraulic oil pressure inside the pressurized oil tank in real time and feeds the monitoring data back to the controller. When the compaction degree does not meet the standard, the audible and visual alarm is automatically activated in the cab to alert the roller operator. At the same time, during the measurement process, all monitoring data from the pressure sensor is fed back to the remote location in real time via a wireless communication module for data recording and storage, and is also fed back to the construction personnel. This solves the problems of existing technologies that use manual core drilling to test the compaction degree of roadbeds and pavements, which are destructive to the road surface, have low testing efficiency, consume a lot of manpower and resources, and produce random test data.

[0035] 2. By setting the damping spring's compression stroke to 2 mm, during the compaction and compaction measurement of the roadbed and pavement, when the roller body is compacting, after the roller wheel enters vibration mode, the vibration amplitude between the roller wheel and the ground is generally between 0.8-2 mm. Therefore, during the vibration compaction process of the roller wheel, it will drive the compaction detection steel plate wheel to generate a downward impact force. To avoid the impact force being too large and affecting the monitoring data of the pressure sensor, the support connecting seat and the drive slider are slidably connected by a guide limit groove and a guide limit block. By setting a fixed rod and a damping spring, when the roller wheel vibrates, after the compaction detection steel plate wheel contacts the ground, it pushes the mounting plate to move upward. The mounting plate drives the drive boom to move, which in turn drives the support connecting seat to move towards both ends of the drive screw, squeezing the damping spring. The contraction of the damping spring dampens and relieves the impact force on the mounting plate and the compaction detection steel plate wheel, thereby improving the accuracy of the roadbed and pavement compaction measurement data. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of an intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention;

[0037] Figure 2 This is a three-dimensional view of the roller body structure of the intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention.

[0038] Figure 3 This is a three-dimensional view of the vibrating wheel frame structure of an intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention.

[0039] Figure 4 This is a three-dimensional view of the roller structure of a roadbed and pavement compaction effect intelligent real-time measurement device and method proposed in this invention.

[0040] Figure 5 This is a three-dimensional view of the reducer structure of the intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention.

[0041] Figure 6 This invention proposes an intelligent real-time measurement device and method for roadbed and pavement compaction effects. Figure 5 Enlarged view of the structure at point A in the middle;

[0042] Figure 7 This is a three-dimensional view of the drive screw structure of an intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention.

[0043] Figure 8 This is a three-dimensional view of the driving slider structure of an intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention.

[0044] Figure 9 This is a three-dimensional view of the support connection seat structure of an intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention.

[0045] Figure 10 This is a three-dimensional view of the connecting column structure of the intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention;

[0046] Figure 11 This is a three-dimensional view of the mounting plate structure of the intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention.

[0047] Figure 12 This is a three-dimensional view of the steel wheel structure for compaction degree detection in the intelligent real-time measurement device and method for roadbed and pavement compaction effect proposed in this invention.

[0048] In the diagram: 1. Roller body; 101. Power vehicle body; 102. Cab; 103. Vibratory wheel frame; 104. Roller wheel; 2. Controller; 3. Audible and visual alarm; 4. Wireless communication module; 5. Drive slot; 501. Fixed bearing seat; 5011. First limit switch; 502. Drive screw; 503. Reducer; 504. Drive motor; 505. Drive slider; 506. Support connecting seat; 507. Guide limit slot; 508. Guide limit block; 509. Fixed rod; 510. Connecting hole; 511. Vibration damping spring 512. Clearance hole; 513. Drive boom; 514. Connecting column; 515. Mounting plate; 516. Guide column; 517. Guide hole; 6. Wheel column; 601. Limit ring; 602. Positioning wheel frame; 603. Positioning contact wheel; 604. Pressure spring; 605. Sensing plate; 606. Second limit switch; 607. Pressurized oil tank; 608. Pressurized oil pipe; 609. Pressure sensor; 610. Pressurized piston; 611. Piston rod; 612. Bearing spring; 613. Detection wheel frame; 614. Compaction degree detection steel plate wheel. 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] Reference Figures 1-12 A smart real-time measurement device for roadbed and pavement compaction effect includes a road roller body 1 for roadbed and pavement compaction construction. The road roller body 1 consists of a power vehicle body 101, a cab 102 mounted on the power vehicle body 101, a vibrating wheel frame 103 mounted at the front end of the power vehicle body 101, and road roller wheels 104 inside the vibrating wheel frame 103.

[0051] The inner wall of the cab 102 is fixedly installed with a controller 2 with a display screen and an audible and visual alarm 3. The audible and visual alarm 3 is electrically connected to the controller 2 via a cable.

[0052] When in use, the sound and light alarm 3 is connected to the controller 2. If the measurement data of the compaction construction is not up to standard, the controller 2 can quickly and automatically control the sound and light alarm 3 to sound an alarm in the cab 102 to alert the road roller driver.

[0053] A wireless communication module 4 is fixedly installed on the upper surface of the cab 102 and electrically connected to the controller 2 via a cable. The wireless communication module 4 is connected to a remote monitoring platform via a cloud server.

[0054] In use, the controller 2 has an automatic control measuring device to measure the compaction of the road surface of the roadbed, and then feeds the measured data back to the remote monitoring platform through the wireless communication module 4.

[0055] Ideally, during use, the remote monitoring platform is also connected to a mobile smart terminal, which facilitates the real-time and rapid feedback of measurement data to relevant construction personnel.

[0056] A measurement and control mechanism is provided on the lower surface of the vibrating wheel frame 103. Two measurement and control mechanisms are symmetrically distributed around the axis of the vibrating wheel frame 103. A compaction measurement mechanism is provided on the surface of the measurement and control mechanism.

[0057] In use, by setting two measurement and control mechanisms and a compaction degree measurement mechanism on the lower surface of the vibratory wheel frame 103, the corresponding measurement and control mechanisms and compaction degree measurement mechanisms can work during the forward compaction and backward compaction of the roller body 1, so as to measure the compaction degree of the road surface after being rolled by the roller wheel 104.

[0058] The measurement and control mechanism is used to control and drive the compaction measurement mechanism to measure the compaction degree of the road surface after it has been compacted by the roller wheel 104.

[0059] The measurement and control mechanism includes a drive groove 5 formed on the lower surface of the vibrating wheel frame 103. The inner wall of the drive groove 5 is T-shaped. Fixed bearing seats 501 with surfaces flush with the surface of the vibrating wheel frame 103 are fixedly connected to the inner walls of both ends of the drive groove 5. A first limit switch 5011 is fixedly installed on the surface of one of the fixed bearing seats 501.

[0060] The inner wall of the fixed bearing housing 501 is rotatably connected to the drive screw 502 via the bearing. The surface of the drive screw 502 is provided with a left helical groove and a right helical groove centered on the axis of the drive screw 502.

[0061] A reducer 503 is fixedly mounted on the surface of the vibrating wheel frame 103. A drive motor 504 is fixedly mounted on the surface of the reducer 503 and is electrically connected to the controller 2 and the first limit switch 511 via a cable. The output shaft of the drive motor 504 is fixedly connected to the power input end of the reducer 503, and one end of the drive screw 502 is fixedly connected to the power output end of the reducer 503.

[0062] When in use, the roller operator in the cab 102 controls the drive motor 504 to work through the controller 2. The drive motor 504 drives the drive screw 502 to rotate through the reducer 503, and the first limit switch 5011 limits the reverse rotation of the drive motor 504.

[0063] The surface of the drive screw 502 is threaded with two symmetrically distributed drive sliders 505 through a left helical groove and a right helical groove. The surface of the drive sliders 505 is adapted to slide and fit the inner wall of the drive groove 5.

[0064] The surface of the drive slider 505 is slidably connected to a support connecting seat 506. The surface of the support connecting seat 506 is slidably connected to the inner wall of the drive groove 5. The surface of the support connecting seat 506 is provided with a guide limiting groove 507 with a convex inner wall. A guide limiting block 508 is slidably connected to the inner wall of the guide limiting groove 507. The surface of the guide limiting block 508 is fixedly connected to the lower surface of the drive slider 505.

[0065] In use, the drive slider 505 is connected and limited to the support connecting seat 506 by the cooperation of the guide limiting block 508 and the guide limiting groove 507.

[0066] The surface of the support connecting seat 506 is fixedly connected to two symmetrically distributed fixed rods 509. The surface of the drive slider 505 is provided with connecting holes 510 that are slidably connected to the surfaces of the two fixed rods 509. The surface of the fixed rods 509 is fitted with damping springs 511. The two ends of the two damping springs 511 are fixedly connected to the surfaces of the drive slider 505 and the support connecting seat 506, respectively.

[0067] Furthermore, the damping compression stroke of the damping spring 511 is 2 mm.

[0068] During use, the damping spring 511, which is sleeved on the surface of the fixing rod 509, damps the road surface when the road roller is compacting the road. After the road roller starts vibrating, the roller wheel 104 vibrates and creates a gap of about 2 mm between itself and the road surface. During the compaction process after the roller wheel 104 leaves the ground, the damping spring 511 reduces the impact force of about 2 mm generated by the roller wheel 104, thereby providing vibration damping protection for the compaction measurement mechanism and preventing damage to the compaction measurement mechanism caused by the impact of the roller wheel 104 on the road surface during the vibration compaction process.

[0069] The surface of the support connecting seat 506 is provided with a clearance hole 512 that fits into the surface of the drive screw 502, and one end of the support connecting seat 506 extends to the lower surface of the vibrating wheel frame 103.

[0070] The surface of the support connecting seat 506 is rotatably connected to the drive boom 513 via a pin. One end of the drive boom 513 is rotatably connected to the connecting column 514 via a pin. The bottom of the connecting column 514 is fixedly connected to the mounting plate 515. The upper surface of the mounting plate 515 is fixedly connected to the guide column 516. The surface of the vibrating wheel frame 103 is provided with a guide hole 517 that mates with the guide column 516. One end of the guide column 516 extends to the upper surface of the vibrating wheel frame 103 through the guide hole 517.

[0071] During use, the movement of the support connecting seat 506 drives the drive boom 513 to move, which in turn drives the mounting plate 515 to move up and down. During the lifting and lowering process, the guide column 516 and the guide hole 517 work together to guide the mounting plate 515 to move up and down in a straight, horizontal and stable manner.

[0072] Among them, the compaction measurement device is used to measure the compaction degree of the road surface in real time during roadbed construction.

[0073] The compaction measuring mechanism includes wheel columns 6 that are slidably connected to the surface of the mounting plate 515. The two wheel columns 6 are symmetrically distributed with the axis of the mounting plate 515 as the center. The surface of the wheel column 6 is T-shaped. A limiting ring 601 that is inserted into the surface of the mounting plate 515 is fixedly sleeved on the surface of the wheel column 6.

[0074] When in use, the limiting ring 601 has the function of limiting the wheel column 6.

[0075] One end of the wheel column 6 extends to the lower surface of the mounting plate 515, and a positioning wheel frame 602 is fixedly connected to one end of the wheel column 6. A positioning contact wheel 603 is installed on the inner wall of the positioning wheel frame 602.

[0076] The surface of the positioning wheel frame 602 is U-shaped, and a pressure spring 604 is sleeved on the surface of the wheel column 6. The two ends of the pressure spring 604 are fixedly connected to the upper surface of the positioning wheel frame 602 and the lower surface of the mounting plate 515, respectively.

[0077] An L-shaped sensing plate 605 is fixedly connected to the upper surface of the mounting plate 515. The surface of the sensing plate 605 is sleeved with the surface of one of the wheel columns 6. A second limit switch 606, which is electrically connected to the drive motor 504 via a cable, is fixedly installed on the surface of the sensing plate 605. One end of the second limit switch 606 extends above the wheel column 6.

[0078] In use, the normally closed contact of the second limit switch 606 is electrically connected to the forward rotation circuit and power supply of the drive motor 504 via cables. When the wheel column 6 moves upward, the top of the wheel column 6 contacts the second limit switch 606, pushing the normally closed contact of the second limit switch 606 to open, thereby controlling the forward rotation power-off of the drive motor 504.

[0079] A pressurized oil tank 607 is fixedly installed on the surface of the mounting plate 515. A pressurized oil pipe 608 is fixedly connected to the upper surface of the pressurized oil tank 607. The pressurized oil pipe 608 is electrically connected through the solenoid valve controller 2. One end of the pressurized oil pipe 608 is connected to the hydraulic system on the roller body 1.

[0080] A pressure sensor 609 is fixedly installed on the upper surface of the pressurized oil tank 607 and electrically connected to the controller 2 via a cable. The pressure detection end of the pressure sensor 609 penetrates and extends to the inner wall of the pressurized oil tank 607.

[0081] During use, the pressure of the hydraulic oil inside the pressurized oil tank 607 is monitored by the pressure sensor 609, and the monitoring data is fed back to the controller 2.

[0082] A pressurizing piston 610 is slidably connected to the inner wall of the pressurizing oil tank 607. A piston rod 611 is fixedly connected to the lower surface of the pressurizing piston 610. A pressure-bearing spring 612 is sleeved on the surface of the piston rod 611. The two ends of the pressure-bearing spring 612 are fixedly connected to the lower surface of the pressurizing piston 610 and the inner bottom wall of the pressurizing oil tank 607, respectively.

[0083] One end of the piston rod 611 passes through and extends to the lower surface of the pressurized oil tank 607. One end of the piston rod 611 is fixedly connected to a detection wheel frame 613. A compaction test steel plate wheel 614 is installed on the inner wall of the detection wheel frame 613.

[0084] Furthermore, during the compaction construction and compaction degree measurement of the roadbed and pavement, when the roller body 1 is compacting, after the roller wheel 104 is in vibration mode, the vibration amplitude between the roller wheel 104 and the ground is generally between 0.8 and 2 mm. Therefore, during the vibration compaction process of the roller wheel 104, it will drive the compaction degree detection steel plate wheel 614 to generate an impact force downward. In order to avoid the impact force being too large and affecting the monitoring data of the pressure sensor 609, a guide limiting groove 507 and a guide limiting block 50 are used between the support connecting seat 506 and the drive slider 505. 8. A sliding connection is used, and by setting a fixed rod 509 and a damping spring 511, when the roller wheel 104 vibrates, after the compaction detection steel plate wheel 614 contacts the ground, it pushes the mounting plate 515 to move upward. The mounting plate 515 drives the drive boom 513 to move, which in turn drives the support connecting seat 506 to move towards both ends of the drive screw 502, squeezing the damping spring 511. The contraction of the damping spring 511 dampens and relieves the impact force on the mounting plate 515 and the compaction detection steel plate wheel 614, thereby improving the accuracy of the data for measuring the compaction of the roadbed and pavement.

[0085] A measurement method for an intelligent real-time measurement device for roadbed and pavement compaction effects includes the following steps:

[0086] Step 1: During the compaction of the roadbed and pavement, the roadbed and pavement are compacted by a road roller. During the compaction process, when it is necessary to measure the degree of compaction, the driver in the cab 102 controls the corresponding measurement control mechanism through the controller 2 according to the movement direction of the roller wheels 104 on the road roller body 1.

[0087] Specifically, the controller 2 controls the corresponding drive motor 504 to start rotating in the forward direction. The drive motor 504 drives the drive screw 502 to rotate through the reducer 503. The drive screw 502 drives the two drive sliders 505 to move simultaneously towards the axis of the drive screw 502 in the drive groove 5 through the left and right helical grooves on its surface. The two drive sliders 505 simultaneously drive the two support connecting seats 506 to move, which in turn drives the two drive booms 513 to move. The simultaneous movement of the two drive booms 513 drives the mounting plate 515 to move downward.

[0088] Step 2: The two drive booms 513 in Step 1 simultaneously drive the mounting plate 515 downward, which in turn drives the wheel column 6, positioning wheel frame 602, and positioning contact wheel 603 downward. After the positioning contact wheel 603 contacts the roadbed surface being tested, it pushes the wheel column 6 and positioning wheel frame 602 upward to compress the pressure spring 604. After the wheel column 6 moves upward and contacts the second limit switch 606, the normally closed contact of the second limit switch 606 opens, controlling the drive motor 504 to stop rotating forward.

[0089] While the positioning wheel frame 602 and the positioning contact wheel 603 are in contact with the roadbed surface, the compaction degree detection steel plate wheel 614 is also in contact with the roadbed surface. During the upward movement of the positioning wheel frame 602 and the wheel column 6, the detection wheel frame 613 and the piston rod 611 simultaneously drive the pressure piston 610 to move upward in the pressure tank 607, pushing and squeezing the hydraulic oil inside the pressure tank 607. After the positioning wheel frame 602 and the wheel column 6 stop moving, the pressure sensor 609 detects the hydraulic oil pressure inside the pressure tank 607. Then, the controller 2 controls the solenoid valve on the pressure oil pipe 608 to open, and the hydraulic system on the road roller pumps hydraulic oil into the pressure tank 607 to pressurize the hydraulic oil inside the pressure tank 607. After the pressurized hydraulic oil pressure reaches the preset pressure for compaction degree measurement, the controller 2 controls the solenoid valve on the pressure oil pipe 608 to close.

[0090] Step 3: After adjusting the hydraulic oil pressure inside the pressurizing tank 607, the operator drives the roller body 1 to compact the roadbed again. During the roller's compaction process, the compaction degree detection steel wheel 614 applies pressure to the road surface, and the hydraulic oil pressure inside the pressurizing tank 607 is monitored in real time by the pressure sensor 609. When the compaction degree meets the standard, the hydraulic oil pressure value inside the pressurizing tank 607 fluctuates within the set range. When the compaction degree does not meet the standard, the compaction degree detection steel wheel 614 sinks into the road surface. The pressure piston 610 moves downward within the pressure tank 607, reducing the hydraulic oil pressure inside the tank. When the pressure exceeds the value range set by the controller 2, the controller 2 automatically activates the audible and visual alarm 3 in the cab 102 to issue an alarm for insufficient compaction. Simultaneously, throughout the compaction detection process, all detection data from the pressure sensor 609 are transmitted in real time to the remote monitoring platform via the wireless communication module 4 for data recording, storage, and feedback to the construction personnel.

[0091] By setting up a measurement control mechanism and a compaction measurement mechanism, during use, the measurement control mechanism drives the compaction measurement mechanism to move and contact the road surface to measure the compaction degree of the road surface. The pressure sensor 609 in the compaction measurement mechanism monitors the hydraulic oil pressure inside the pressurized oil tank 607 in real time and feeds the monitoring data back to the controller 2. When the compaction degree does not meet the standard, the audible and visual alarm 3 is automatically controlled to provide an audible and visual alarm to the roller operator in the cab 102. At the same time, during the measurement process, all monitoring data from the pressure sensor 609 is fed back to the remote location in real time via the wireless communication module 4 for data recording and storage and feedback to the construction personnel. This solves the problems of existing technologies that use manual core drilling to test the compaction degree of roadbeds and pavements, which are destructive to the road surface, have low testing efficiency, consume a lot of manpower and resources, and have random test data.

[0092] 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 smart real-time measurement device for roadbed and pavement compaction effect, comprising a roller body (1) for roadbed and pavement compaction construction, characterized in that: The road roller body (1) consists of a power vehicle body (101), a cab (102) mounted on the power vehicle body (101), a vibrating wheel frame (103) mounted at the front end of the power vehicle body (101), and road roller wheels (104) inside the vibrating wheel frame (103); The inner wall of the cab (102) is fixedly installed with a controller (2) with a display screen and an audible and visual alarm (3). The audible and visual alarm (3) is electrically connected to the controller (2) via a cable. The upper surface of the cab (102) is fixedly installed with a wireless communication module (4) electrically connected to the controller (2) via a cable. The wireless communication module (4) is connected to a remote monitoring platform via a cloud server. The lower surface of the vibrating wheel frame (103) is provided with a measurement and control mechanism. The two measurement and control mechanisms are symmetrically distributed with the axis of the vibrating wheel frame (103) as the center. The surface of the measurement and control mechanism is provided with a compaction measurement mechanism. Among them, the measurement and control mechanism is used to control and drive the compaction measurement mechanism to measure the compaction degree of the road surface after it has been compacted by the road roller (104); The measurement and control mechanism includes a drive groove (5) formed on the lower surface of the vibrating wheel frame (103). The inner wall of the drive groove (5) is T-shaped. Fixed bearing seats (501) with surfaces flush with the surface of the vibrating wheel frame (103) are fixedly connected to the inner walls of both ends of the drive groove (5). A first limit switch (5011) is fixedly installed on the surface of one of the fixed bearing seats (501). The inner wall of the fixed bearing seat (501) is rotatably connected to a drive screw (502) via a bearing. The surface of the drive screw (502) is provided with a left helical groove and a right helical groove respectively centered on the axis of the drive screw (502). A reducer (503) is fixedly installed on the surface of the vibrating wheel frame (103). A drive motor (504) is fixedly installed on the surface of the reducer (503) via a cable and electrically connected to the controller (2) and the first limit switch (5011). The output shaft of the drive motor (504) is fixedly connected to the power input end of the reducer (503). One end of the drive screw (502) is fixedly connected to the power output end of the reducer (503). The surface of the drive screw (502) is threaded with two symmetrically distributed drive sliders (505) via the left and right helical grooves. The surface of the drive sliders (505) is adapted to slide and fit the inner wall of the drive groove (5). The surface of the drive slider (505) is slidably connected to a support connecting seat (506), the surface of the support connecting seat (506) is slidably connected to the inner wall of the drive groove (5), the surface of the support connecting seat (506) is provided with a guide limiting groove (507) with a convex inner wall, the inner wall of the guide limiting groove (507) is slidably connected to a guide limiting block (508), the surface of the guide limiting block (508) is fixedly connected to the lower surface of the drive slider (505); the support connecting seat (506) is slidably connected to a support connecting seat (506), the surface of the drive groove (506) is slidably connected to the inner wall of the drive groove (507), the surface of the guide limiting block (508) is fixedly connected to the lower surface of the drive slider (505); the surface of the support connecting seat (506) is slidably connected to a support connecting seat (506), the surface of the drive groove (506) is slidably connected to the inner wall of the drive groove ... 06) has two symmetrically distributed fixed rods (509) fixedly connected to its surface. The surface of the drive slider (505) is provided with connecting holes (510) that are slidably connected to the surfaces of the two fixed rods (509). The surface of the fixed rods (509) is fitted with damping springs (511). The two ends of the two damping springs (511) are fixedly connected to the surfaces of the drive slider (505) and the support connecting seat (506) respectively. The damping compression stroke of the damping springs (511) is 2 mm. The surface of the support connecting seat (506) is provided with a clearance hole (512) that fits into the surface of the drive screw (502), and one end of the support connecting seat (506) extends to the lower surface of the vibrating wheel frame (103). The surface of the support connecting seat (506) is rotatably connected to the drive boom (513) via a pin. One end of the drive boom (513) is rotatably connected to the connecting column (514) via a pin. The bottom of the connecting column (514) is fixedly connected to the mounting plate (515). The upper surface of the mounting plate (515) is fixedly connected to the guide column (516). The surface of the vibrating wheel frame (103) is provided with a guide hole (517) that cooperates with the guide column (516). One end of the guide column (516) extends to the upper surface of the vibrating wheel frame (103) through the guide hole (517). Among them, the compaction measurement device is used to measure the compaction degree of the road surface in real time during roadbed construction; The compaction measuring mechanism includes a wheel column (6) that is slidably connected to the surface of the mounting plate (515). The two wheel columns (6) are symmetrically distributed around the axis of the mounting plate (515). The surface of the wheel column (6) is T-shaped. A limiting ring (601) that is inserted into the surface of the mounting plate (515) is fixedly sleeved on the surface of the wheel column (6). One end of the wheel column (6) extends to the lower surface of the mounting plate (515). A positioning wheel frame (602) is fixedly connected to one end of the wheel column (6). A positioning contact wheel (603) is installed on the inner wall of the positioning wheel frame (602). The surface of the positioning wheel frame (602) is U-shaped, and a pressure spring (604) is sleeved on the surface of the wheel column (6). The two ends of the pressure spring (604) are fixedly connected to the upper surface of the positioning wheel frame (602) and the lower surface of the mounting plate (515), respectively. An L-shaped sensing plate (605) is fixedly connected to the upper surface of the mounting plate (515). The surface of the sensing plate (605) is sleeved with the surface of one of the wheel posts (6). A second limit switch (606) electrically connected to the drive motor (504) via a cable is fixedly installed on the surface of the sensing plate (605). One end of the second limit switch (606) extends above the wheel post (6).

2. The intelligent real-time measurement device for roadbed and pavement compaction effect according to claim 1, characterized in that: A pressurized oil tank (607) is fixedly installed on the surface of the mounting plate (515). A pressurized oil pipe (608) is fixedly connected to the upper surface of the pressurized oil tank (607). The pressurized oil pipe (608) is electrically connected to the controller (2) through a solenoid valve. One end of the pressurized oil pipe (608) is connected to the hydraulic system on the roller body (1). A pressure sensor (609) is fixedly installed on the upper surface of the pressurized oil tank (607) and electrically connected to the controller (2) via a cable. The pressure detection end of the pressure sensor (609) extends through and to the inner wall of the pressurized oil tank (607). A pressurizing piston (610) is slidably connected to the inner wall of the pressurizing oil tank (607). A piston rod (611) is fixedly connected to the lower surface of the pressurizing piston (610). A pressure-bearing spring (612) is sleeved on the surface of the piston rod (611). The two ends of the pressure-bearing spring (612) are fixedly connected to the lower surface of the pressurizing piston (610) and the inner bottom wall of the pressurizing oil tank (607), respectively. One end of the piston rod (611) passes through and extends to the lower surface of the pressurized oil tank (607). One end of the piston rod (611) is fixedly connected to a detection wheel frame (613). A compaction test steel plate wheel (614) is installed on the inner wall of the detection wheel frame (613).

3. The measurement method of the intelligent real-time measurement device for roadbed and pavement compaction effect according to claim 2, characterized in that, Includes the following steps: Step 1: During the compaction of the roadbed and pavement, the roadbed and pavement are compacted by a road roller. During the compaction process, when it is necessary to measure the degree of compaction, the driver in the cab (102) controls the corresponding measurement control mechanism through the controller (2) according to the movement direction of the roller wheel (104) on the road roller body (1). Specifically, the controller (2) controls the corresponding drive motor (504) to start rotating in the forward direction. The drive motor (504) drives the drive screw (502) to rotate through the reducer (503). The drive screw (502) drives the two drive sliders (505) to move simultaneously towards the axis of the drive screw (502) in the drive groove (5) through the left and right spiral grooves on its surface. The two drive sliders (505) simultaneously drive the two support connecting seats (506) to move, which in turn drives the two drive booms (513) to move. The two drive booms (513) simultaneously move, which in turn drives the mounting plate (515) to move downward. Step 2: The two drive booms (513) in Step 1 simultaneously drive the mounting plate (515) to move downward, which in turn drives the wheel column (6), positioning wheel frame (602) and positioning contact wheel (603) to move downward. After the positioning contact wheel (603) contacts the roadbed surface being tested, it pushes the wheel column (6) and positioning wheel frame (602) to move upward and compress the pressure spring (604). After the wheel column (6) moves upward and contacts the second limit switch (606), the normally closed contact of the second limit switch (606) opens, controlling the drive motor (504) to stop rotating forward. While the positioning wheel frame (602) and positioning contact wheel (603) are in contact with the roadbed surface, the compaction detection steel plate wheel (614) is also in contact with the roadbed surface. During the upward movement of the positioning wheel frame (602) and wheel column (6), the detection wheel frame (613) and piston rod (611) simultaneously drive the pressure piston (610) to move upward in the pressure tank (607), pushing and squeezing the hydraulic oil inside the pressure tank (607). When the positioning wheel frame (602) and wheel column (6) stop... After the movement stops, the pressure sensor (609) detects the hydraulic oil pressure inside the pressurized oil tank (607), and then the controller (2) controls the solenoid valve on the pressurized oil pipe (608) to open, and the hydraulic system on the road roller pumps hydraulic oil into the pressurized oil tank (607) to pressurize the hydraulic oil inside the pressurized oil tank (607). After the pressurized hydraulic oil pressure reaches the preset pressure for compaction measurement, the controller (2) controls the solenoid valve on the pressurized oil pipe (608) to close. Step 3: After adjusting the hydraulic oil pressure inside the pressurizing tank (607), the driver drives the roller body (1) to compact the roadbed again. During the roller's compaction process, the compaction degree detection steel wheel (614) applies pressure to the road surface and monitors the hydraulic oil pressure inside the pressurizing tank (607) in real time through the pressure sensor (609). When the compaction degree meets the standard, the hydraulic oil pressure value inside the pressurizing tank (607) fluctuates within the set range. When the compaction degree does not meet the standard, the compaction degree detection steel wheel (614) sinks into the road surface. The pressure piston (610) moves downward in the pressure tank (607), reducing the hydraulic oil pressure inside the pressure tank (607). When the pressure exceeds the value range set by the controller (2), the controller (2) automatically controls the audible and visual alarm (3) in the cab (102) to issue an audible and visual alarm to the driver for non-compaction. At the same time, during the entire compaction detection process, all detection data from the pressure sensor (609) are sent in real time to the remote monitoring platform via the wireless communication module (4) for data recording, storage, and feedback to the construction personnel.

Images