A vibration compaction control device and method for soil-rock mixed filling high filling roadbed

Abstract

The application relates to the field of road engineering construction, and discloses a soil-rock mixed filling high-filling roadbed vibration compaction control device and method, which comprises a main frame and a vibrating roller hinged to the front end of the main frame. In the application, a vibration excitation adjusting assembly and a phase differential adjusting mechanism are arranged, a servo adjusting motor is used to drive an adjusting worm and an inner gear ring, differential action of a planetary gear set is used to make an external sleeve shaft generate dynamic changes in rotating speed and phase relative to a central main shaft, a hydraulic drive system drives the central main shaft to rotate to make a main eccentric block generate a basic vibration excitation force, an intelligent control unit adjusts a relative included angle of a secondary eccentric block and the main eccentric block according to an instruction, and different sizes and directions of vibration excitation force vectors are synthesized, so that the device can adapt to complex working conditions of uneven spatial distribution of physical properties of soil-rock mixed filling materials, local under-pressing or over-pressing phenomena caused by unadjustable vibration excitation forces are avoided, and the problem of single mode of a traditional fixed eccentric moment vibration exciter is solved.

Description

Technical Field

[0001] This invention relates to the field of road engineering construction, and in particular to a vibration compaction control device and method for high-fill roadbed with mixed soil and rock. Background Technology

[0002] In the compaction of high-fill subgrades with soil and rock mixtures, vibratory rollers are typically used to improve the density and strength of the subgrade. Traditional vibratory rollers use vibratory drums with fixed frequency and amplitude, which cannot be flexibly adjusted according to different fill material properties and construction conditions, thus often failing to achieve optimal compaction results. For example, on soil-rock mixtures with high moisture content or narrow particle size distribution, excessively high vibration frequency and amplitude may lead to over-compaction or uneven compaction, while on soil-rock mixtures with low moisture content or wide particle size distribution, lower vibration frequency and amplitude may result in insufficient compaction, failing to meet engineering requirements. Therefore, how to achieve intelligent control of vibratory compaction has become an important research direction in current soil-rock mixture compaction technology.

[0003] Traditional vibratory compaction devices typically use vibrators with a fixed eccentricity, which generate relatively simple excitation forces and vibration modes. However, soil-rock fill materials are composed of soil and stones of varying particle sizes, resulting in significant differences in their physical properties in spatial distribution. A uniform and unchanging excitation force is difficult to adapt to such complex and variable working conditions, potentially leading to uneven compaction, with some areas under-compacted while others are over-compacted, affecting the overall compaction quality and efficiency. Furthermore, the complex multi-dimensional vibration impact generated by the vibratory roller during operation is directly transmitted to the main frame, affecting not only operational comfort and equipment lifespan but also making it difficult for the control system to accurately sense and distinguish the actual compaction status feedback from different directions, thus hindering the intelligent closed-loop control of the compaction process. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a vibration compaction control device and method for high-fill roadbeds with mixed soil and rock, thus solving the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a control device for vibration compaction of high-fill roadbed with soil and rock mixture, comprising a main frame and a vibrating drum hinged to the front end of the main frame. The two ends of the vibrating drum are supported on the main frame by bearing seats. An excitation adjustment assembly is axially arranged in the internal cavity of the vibrating drum. The excitation adjustment assembly includes a central main shaft and an outer sleeve shaft coaxially intersecting. The two ends of the central main shaft are supported on the end caps of the vibrating drum. The outer sleeve shaft is rotatably sleeved on the outer circumferential surface of the middle section of the central main shaft. One end of the excitation adjustment assembly is connected to a phase differential adjustment mechanism. The phase differential adjustment mechanism includes a sun gear fixedly connected to the end of the central main shaft, a planetary carrier fixedly connected to the end of the outer sleeve shaft, planetary gears evenly distributed on the planetary carrier, an internal gear ring meshing with the planetary gears, and an adjusting worm meshing with the worm gear teeth on the outer circumferential surface of the internal gear ring. The adjusting worm is connected to a servo adjustment motor. The thread helix angle of the adjusting worm is smaller than the equivalent friction angle between it and the worm gear teeth to achieve self-locking. Several main eccentric blocks are fixedly arranged on the central main shaft, and several secondary eccentric blocks are fixedly arranged on the outer wall of the outer sleeve shaft. The main eccentric blocks and secondary eccentric blocks are staggered in axial position and have different rotation radii.

[0006] Preferably, a composite sensing damping seat is provided between the bearing housing and the main frame. The composite sensing damping seat includes an upper connecting plate, a lower connecting plate, and a shear-type rubber block bonded between the upper and lower connecting plates by a high-temperature and high-pressure vulcanization process. A piezoelectric ceramic sensor array is pre-embedded inside the shear-type rubber block. The signal output terminal of the piezoelectric ceramic sensor array is connected to an intelligent control unit. A hydraulic drive system and an intelligent control unit are installed on the main frame. The intelligent control unit controls a servo adjustment motor to adjust the phase difference between the main eccentric block and the secondary eccentric block according to the vibration signal collected by the piezoelectric ceramic sensor array.

[0007] Preferably, the central spindle is supported on the end cover of the vibrating drum by a self-aligning roller bearing, and the outer sleeve is rotatably mounted on the outer circumferential surface of the middle section of the central spindle by a needle roller bearing. The main eccentric block has a fan-shaped structure with a central angle ranging from 120 degrees to 150 degrees. The secondary eccentric block has a ring-shaped notch structure with a central angle ranging from 90 degrees to 110 degrees corresponding to the notch.

[0008] Preferably, the internal gear ring is confined within an annular groove inside the housing of the phase differential adjustment mechanism, giving it only the degree of freedom to rotate around the central main shaft axis; the two ends of the adjusting worm are supported on angular contact ball bearings.

[0009] Preferably, the interior of the central spindle is provided with an axially oriented lubricating oil passage, which is connected to the bearing inside the outer sleeve shaft through a radially drilled hole. The oil inlet of the lubricating oil passage is located at the center of the end face of the central spindle and is connected to a rotary joint.

[0010] Preferably, the piezoelectric ceramic sensor array is composed of three orthogonally arranged piezoelectric wafers stacked together, which respectively detect the Z-axis acceleration perpendicular to the ground, the X-axis acceleration along the direction of travel, and the Y-axis acceleration along the roller axis.

[0011] Preferably, there are four composite sensing damping seats, which are symmetrically arranged on the upper and lower sides of the bearing seats at both ends of the vibrating drum. The composite sensing damping seat on the upper side mainly bears the vertical compressive load, and the composite sensing damping seat on the lower side mainly bears the vertical tensile load.

[0012] Preferably, a plurality of raised rolling protrusions are welded on the outer circumferential surface of the vibrating drum. The rolling protrusions are in the shape of sheep's foot or trapezoidal platform, and adjacent rows of rolling protrusions are staggered in the circumferential direction. A ring-shaped reinforcing rib is welded on the inner wall of the vibrating drum. The reinforcing rib is located between the rotation planes of the main eccentric block and the secondary eccentric block.

[0013] Preferably, a GNSS positioning antenna is mounted on the top of the main frame, and the GNSS positioning antenna is connected to the intelligent control unit; the intelligent control unit includes a microprocessor module, a signal conditioning circuit, and a power drive circuit, and the microprocessor module communicates with the controller of the hydraulic drive system via a CAN bus.

[0014] A method for controlling the vibration compaction of high-fill roadbed with mixed soil and rock includes the following steps: S1: Start the hydraulic drive system to drive the vibrating drum to rotate and move forward, while driving the central spindle to rotate at high speed, which drives the main eccentric block to generate basic excitation force; S2: The intelligent control unit outputs control commands to the servo adjustment motor based on the preset compaction target value or compaction process curve and GNSS positioning information. S3: The servo motor drives the adjusting worm to rotate, which in turn drives the internal gear ring to rotate. Through the differential action of the planetary gears and the planetary carrier, the rotational speed and phase of the outer sleeve shaft relative to the central main shaft are changed, and the angle between the secondary eccentric block and the main eccentric block is dynamically adjusted to achieve stepless and continuous adjustment of the excitation force from minimum to maximum. S4: The piezoelectric ceramic sensor array senses the triaxial vibration acceleration signal transmitted from the vibrating drum in real time and transmits the signal to the intelligent control unit; S5: The intelligent control unit analyzes and processes the vibration signal, calculates the effective value and spectral characteristics of the vibration acceleration, and generates control commands in real time by combining the correlation between the roadbed compaction degree and the vibration characteristics. S6: The intelligent control unit regulates the electromagnetic proportional valve of the hydraulic drive system through the CAN bus to control the travel speed, and at the same time outputs a signal to the servo regulating motor to precisely adjust the magnitude of the excitation force, forming a closed-loop intelligent control circuit of perception-analysis-decision-execution, so as to realize adaptive compaction of roadbeds with different fillers, thicknesses and moisture contents.

[0015] Beneficial effects This invention provides a device and method for controlling the vibration compaction of high-fill roadbeds with mixed soil and rock. Compared with the prior art, it has the following advantages: 1. In this invention, by setting up an excitation adjustment assembly and a phase differential adjustment mechanism, a servo adjustment motor drives the adjustment worm and internal gear ring, and through the differential action of the planetary gear set, the outer sleeve shaft relative to the central main shaft generates dynamic changes in speed and phase, thereby realizing stepless continuous adjustment of the excitation force. The hydraulic drive system drives the central main shaft to rotate, thereby driving the main eccentric block to generate the basic excitation force. The intelligent control unit adjusts the relative angle between the secondary eccentric block and the main eccentric block according to the command, synthesizing excitation force vectors of different magnitudes and directions. This can adapt to the complex working conditions of uneven spatial distribution of physical properties of soil and rock filling materials, and avoid the phenomenon of local undervoltage or overvoltage caused by the inability to adjust the excitation force, thereby solving the problem of the single mode of traditional fixed eccentric moment vibrator. 2. In this invention, through the composite sensing damping seat and its internally embedded piezoelectric ceramic sensor array, the sensor array senses the triaxial vibration acceleration signal transmitted by the vibrating drum in real time during operation. The intelligent control unit analyzes the strong correlation between the effective value of the vibration acceleration, the spectral characteristics, and the compaction stiffness of the roadbed, and generates control commands in real time in conjunction with GNSS positioning information. On the one hand, the system adjusts the hydraulic drive system to control the travel speed, and on the other hand, it precisely adjusts the magnitude of the excitation force through the servo motor, realizing intelligent compaction management by region and by pass. At the same time, the composite sensing damping seat effectively isolates the transmission of high-frequency vibration energy to the main frame, which not only protects the accuracy of the sensor signals, but also improves the operating comfort and equipment life. Combined with the rolling protrusions arranged in a staggered manner on the surface of the drum, it further enhances the compaction uniformity and work efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a control device for vibration compaction of a high-fill roadbed with mixed soil and rock proposed in this invention; Figure 2 This is a schematic diagram of the phase differential adjustment mechanism in the control device for vibration compaction of high fill roadbed with soil and rock mixture proposed in this invention; Figure 3 This is a side view of a control device for vibration compaction of a high-fill roadbed with mixed soil and rock, as proposed in this invention. Figure 4 This is a schematic diagram of the composite sensing damping seat in the control device for vibration compaction of a high-fill roadbed with mixed soil and rock proposed in this invention.

[0017] Legend: 1. Main frame; 2. Vibrating roller; 21. Compacting protrusion; 22. Reinforcing rib; 3. Bearing housing; 4. Vibration adjustment assembly; 41. Central spindle; 411. Lubrication channel; 42. External sleeve shaft; 43. Main eccentric block; 44. Secondary eccentric block; 5. Hydraulic drive system; 6. Intelligent control unit; 7. Phase differential adjustment mechanism; 71. Sun gear; 72. Planetary carrier; 73. Planetary gear; 74. Internal gear ring; 75. Adjusting worm gear; 76. Servo adjustment motor; 8. Composite sensing damping seat; 81. Upper connecting plate; 82. Lower connecting plate; 83. Shear-type rubber block; 84. Piezoelectric ceramic sensor array; 9. GNSS positioning antenna. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-4 The present invention provides two technical solutions, specifically including the following embodiments: Example 1: A control device for vibratory compaction of high-fill roadbed with mixed soil and rock includes a main frame 1 and a vibrating drum 2 hinged to the front end of the main frame 1. Both ends of the vibrating drum 2 are supported on the main frame 1 by bearing seats 3. An excitation adjustment assembly 4 is axially arranged in the internal cavity of the vibrating drum 2. The excitation adjustment assembly 4 includes a central main shaft 41 and an outer sleeve shaft 42 coaxially inserted. Both ends of the central main shaft 41 are supported on the end caps of the vibrating drum 2. The outer sleeve shaft 42 is rotatably sleeved on the outer circumferential surface of the middle section of the central main shaft 41. One end of the excitation adjustment assembly 4 is connected to a phase differential adjustment mechanism 7. The phase differential adjustment mechanism 7 includes components fixedly connected to the central main shaft. The sun gear 71 at the end of the 41, the planet carrier 72 fixedly connected to the end of the outer sleeve shaft 42, the planet gears 73 evenly distributed on the planet carrier 72, the internal gear ring 74 meshing with the planet gear 73, and the adjusting worm 75 meshing with the worm gear teeth on the outer circumference of the internal gear ring 74. The adjusting worm 75 is connected to a servo adjusting motor 76. The thread helix angle of the adjusting worm 75 is smaller than the equivalent friction angle between it and the worm gear teeth to achieve self-locking. The internal gear ring 74 is restricted in the annular slide groove inside the housing of the phase differential adjustment mechanism 7, so that it only has the degree of freedom to rotate around the axis of the central main shaft 41. The two ends of the adjusting worm 75 are supported on angular contact ball bearings. Several main eccentric blocks 43 are fixedly mounted on the central spindle 41, and several secondary eccentric blocks 44 are correspondingly fixedly mounted on the outer wall of the outer sleeve shaft 42. The main eccentric blocks 43 and secondary eccentric blocks 44 are staggered in axial position and have different rotation radii. The central spindle 41 is supported on the end cover of the vibrating drum 2 by self-aligning roller bearings, and the outer sleeve shaft 42 is rotatably mounted on the outer circumference of the middle section of the central spindle 41 by needle roller bearings. The main eccentric blocks 43 have a fan-shaped structure with a central angle ranging from 120 degrees to 150 degrees; the secondary eccentric blocks 44 have a ring-shaped notch structure with a central angle ranging from 90 degrees to... At 110 degrees, the interior of the central spindle 41 is provided with an axially oriented lubricating oil passage. The lubricating oil passage is connected to the bearing inside the outer sleeve 42 through a radial drill hole. The oil inlet of the lubricating oil passage is located at the center of the end face of the central spindle 41 and is connected to a rotary joint. Several raised rolling protrusions 21 are welded on the outer circumferential surface of the vibrating drum 2. The rolling protrusions 21 are in the shape of sheep's feet or trapezoidal platform. Adjacent rows of rolling protrusions 21 are staggered in the circumferential direction. The inner wall of the vibrating drum 2 is welded with a ring-shaped reinforcing rib plate 22. The reinforcing rib plate 22 is located between the rotation plane of the main eccentric block 43 and the secondary eccentric block 44.

[0020] During operation, the servo motor 76 drives the adjusting worm gear 75 and the internal gear ring 74, and through the differential action of the planetary gear set 73, the outer sleeve shaft 42 relative to the central main shaft 41 generates dynamic changes in speed and phase, thereby realizing stepless continuous adjustment of the excitation force. The hydraulic drive system 5 drives the central main shaft 41 to rotate, thereby driving the main eccentric block 43 to generate the basic excitation force. The intelligent control unit 6 adjusts the relative angle between the secondary eccentric block 44 and the main eccentric block 43 according to the command, synthesizing excitation force vectors of different magnitudes and directions. This can adapt to the complex working conditions of uneven spatial distribution of physical properties of soil and rock filling materials, and avoid the phenomenon of local undervoltage or overvoltage caused by the inability to adjust the excitation force, thus solving the problem of the single mode of traditional fixed eccentric moment vibrators.

[0021] Example 2: Based on Embodiment 1, a composite sensing damping seat 8 is provided between the bearing housing 3 and the main frame 1. The composite sensing damping seat 8 includes an upper connecting plate 81, a lower connecting plate 82, and a shear-type rubber block 83 bonded between the upper connecting plate 81 and the lower connecting plate 82 by a high-temperature and high-pressure vulcanization process. A piezoelectric ceramic sensor array 84 is pre-embedded inside the shear-type rubber block 83. The signal output terminal of the piezoelectric ceramic sensor array 84 is connected to the intelligent control unit 6. The hydraulic drive system 5 and the intelligent control unit 6 are installed on the main frame 1. The intelligent control unit 6 controls the servo adjustment motor 76 to adjust the phase difference between the main eccentric block 43 and the secondary eccentric block 44 according to the vibration signal collected by the piezoelectric ceramic sensor array 84. It should be noted that the intelligent control unit 6 integrates a microprocessor module, a signal conditioning circuit, and a power drive circuit. The microprocessor module adopts an embedded processor chip and establishes a connection with the controller of the hydraulic drive system 5 through the CAN bus communication protocol. It acquires the walking speed data reflecting the moving rate of the device and the vibration frequency data representing the vibration force of the roller in real time, and stores them in the internal register to ensure that the data is available in real time and avoids control deviation caused by delay. For the acquired data, the signal conditioning circuit first removes high-frequency noise and eliminates signal fluctuations caused by moisture interference through a low-pass filter. Then, it enhances the readability of weak signals through an amplification circuit, forming a high-precision first velocity signal and first frequency signal, thereby improving data accuracy and decision reliability. The microprocessor module receives the processed signal and performs time synchronization correlation with the precise location information acquired by the GNSS positioning antenna 9 to generate a second control signal containing location attributes. This signal identifies specific road sections and determines compaction requirements, enabling regional control.Finally, the power drive circuit converts the control command into drive current through pulse width modulation, adaptively adjusting the travel speed and vibration frequency of the hydraulic system to ensure intelligent management based on position information under complex working conditions such as slope changes, effectively preventing under-pressure or over-pressure, and improving the uniformity and safety of roadbed compaction. The piezoelectric ceramic sensor array 84 is composed of three orthogonally arranged piezoelectric wafers stacked together, respectively detecting the Z-axis acceleration perpendicular to the ground, the X-axis acceleration along the travel direction, and the Y-axis acceleration along the roller axis. There are four composite sensing damping seats 8, symmetrically arranged on the upper and lower sides of the bearing seats 3 at both ends of the vibrating roller 2. The composite sensing damping seat 8 on the upper side mainly bears the vertical compressive load, and the composite sensing damping seat 8 on the lower side mainly bears the vertical tensile load. A GNSS positioning antenna 9 is installed on the top of the main frame 1, and the GNSS positioning antenna 9 is connected to the intelligent control unit 6; the intelligent control... The control unit 6 includes a microprocessor module, a signal conditioning circuit, and a power drive circuit. The microprocessor module communicates with the controller of the hydraulic drive system 5 via a CAN bus. During operation, the sensor array senses the triaxial vibration acceleration signal transmitted by the vibrating drum 2 in real time. The intelligent control unit 6 analyzes the strong correlation between the effective value of the vibration acceleration, the spectral characteristics, and the compaction stiffness of the roadbed, and generates control commands in real time in conjunction with GNSS positioning information. On the one hand, the system adjusts the hydraulic drive system 5 to control the travel speed, and on the other hand, it precisely adjusts the magnitude of the excitation force through the servo motor, realizing intelligent compaction management by region and by pass. At the same time, the composite sensing damping seat 8 effectively isolates the transmission of high-frequency vibration energy to the main frame 1, which not only protects the accuracy of the sensor signals but also improves the operating comfort and equipment life. Combined with the rolling protrusions 21 arranged in a staggered manner on the surface of the drum, it further enhances the compaction uniformity and operating efficiency.

[0022] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control device for vibratory compaction of high-fill roadbed with mixed soil and rock, comprising a main frame (1) and a vibrating roller (2) hinged to the front end of the main frame (1), wherein both ends of the vibrating roller (2) are supported on the main frame (1) by bearing seats (3), characterized in that: An excitation adjustment assembly (4) is axially arranged in the internal cavity of the vibrating drum (2). The excitation adjustment assembly (4) includes a central main shaft (41) and an outer sleeve shaft (42) coaxially intersecting. The two ends of the central main shaft (41) are supported on the end caps of the vibrating drum (2). The outer sleeve shaft (42) is rotatably sleeved on the outer circumferential surface of the middle section of the central main shaft (41). One end of the excitation adjustment assembly (4) is connected to a phase differential adjustment mechanism (7). The phase differential adjustment mechanism (7) includes a fixed connection. The sun gear (71) is connected to the end of the central spindle (41), the planet carrier (72) is fixedly connected to the end of the outer sleeve shaft (42), the planet gears (73) are evenly distributed on the planet carrier (72), the internal gear ring (74) meshes with the planet gear (73), and the adjusting worm (75) meshes with the worm gear teeth on the outer circumference of the internal gear ring (74). The adjusting worm (75) is connected to a servo adjusting motor (76). The thread helix angle of the adjusting worm (75) is smaller than the equivalent friction angle between it and the worm gear teeth to achieve self-locking. Several main eccentric blocks (43) are fixedly arranged on the central main shaft (41), and several secondary eccentric blocks (44) are fixedly arranged on the outer wall of the outer sleeve shaft (42). The main eccentric blocks (43) and secondary eccentric blocks (44) are staggered in axial position and have different rotation radii.

2. The control device for vibration compaction of high-fill roadbed with mixed soil and rock as described in claim 1, characterized in that: A composite sensing damping seat (8) is provided between the bearing housing (3) and the main frame (1). The composite sensing damping seat (8) includes an upper connecting plate (81), a lower connecting plate (82), and a shear-type rubber block (83) bonded between the upper connecting plate (81) and the lower connecting plate (82) by a high-temperature and high-pressure vulcanization process. A piezoelectric ceramic sensor array (84) is pre-embedded inside the shear-type rubber block (83). The signal output terminal of the piezoelectric ceramic sensor array (84) is connected to the intelligent control unit (6). A hydraulic drive system (5) and an intelligent control unit (6) are installed on the main frame (1). The intelligent control unit (6) controls the servo adjustment motor (76) to adjust the phase difference between the main eccentric block (43) and the secondary eccentric block (44) according to the vibration signal collected by the piezoelectric ceramic sensor array (84).

3. The control device for vibration compaction of high-fill roadbed with mixed soil and rock as described in claim 1, characterized in that: The central spindle (41) is supported on the end cover of the vibrating drum (2) by self-aligning roller bearings. The outer sleeve shaft (42) is rotatably sleeved on the outer circumference of the middle section of the central spindle (41) by needle roller bearings. The main eccentric block (43) is a fan-shaped structure with a central angle range of 120 degrees to 150 degrees. The secondary eccentric block (44) is a ring-shaped notched structure with a central angle range of 90 degrees to 110 degrees corresponding to the notch.

4. The control device for vibration compaction of high-fill roadbed with mixed soil and rock as described in claim 1, characterized in that: The internal gear ring (74) is confined within an annular groove inside the housing of the phase differential adjustment mechanism (7), giving it only the freedom to rotate around the central main shaft (41); the two ends of the adjusting worm (75) are supported on angular contact ball bearings.

5. The control device for vibration compaction of high-fill roadbed with mixed soil and rock as described in claim 1, characterized in that: The interior of the central spindle (41) is provided with an axially oriented lubrication channel (411). The lubrication channel (411) is connected to the bearing inside the outer sleeve shaft (42) through a radial drilling hole. The oil inlet of the lubrication channel (411) is located at the center of the end face of the central spindle (41) and is connected to a rotary joint.

6. The control device for vibration compaction of high-fill roadbed with mixed soil and rock as described in claim 1, characterized in that: The piezoelectric ceramic sensor array (84) is composed of three orthogonally arranged piezoelectric wafers stacked together, which respectively detect the Z-axis acceleration perpendicular to the ground, the X-axis acceleration along the direction of travel, and the Y-axis acceleration along the roller axis.

7. The control device for vibration compaction of high-fill roadbed with mixed soil and rock as described in claim 2, characterized in that: The number of composite sensing damping seats (8) is four, which are symmetrically arranged on the upper and lower sides of the bearing seats (3) at both ends of the vibrating drum (2). The composite sensing damping seat (8) located on the upper side mainly bears the vertical compressive load, and the composite sensing damping seat (8) located on the lower side mainly bears the vertical tensile load.

8. The control device for vibration compaction of high-fill roadbed with mixed soil and rock as described in claim 1, characterized in that: The outer circumferential surface of the vibrating roller (2) is welded with a number of raised rolling protrusions (21). The rolling protrusions (21) are in the shape of sheep's foot or trapezoidal platform, and adjacent rows of rolling protrusions (21) are staggered in the circumferential direction. The inner wall of the vibrating roller (2) is welded with a ring-shaped reinforcing rib plate (22), which is located between the rotation plane of the main eccentric block (43) and the secondary eccentric block (44).

9. The control device for vibration compaction of high-fill roadbed with mixed soil and rock as described in claim 1, characterized in that: A GNSS positioning antenna (9) is installed on the top of the main frame (1), and the GNSS positioning antenna (9) is connected to the intelligent control unit (6); the intelligent control unit (6) includes a microprocessor module, a signal conditioning circuit and a power drive circuit, and the microprocessor module communicates with the controller of the hydraulic drive system (5) via a CAN bus.

10. A method for controlling the vibration compaction of a high-fill roadbed with mixed soil and rock, based on the control device for vibration compaction of a high-fill roadbed with mixed soil and rock as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Start the hydraulic drive system (5) to drive the vibrating drum (2) to rotate and move forward, while driving the central spindle (41) to rotate at high speed, which drives the main eccentric block (43) to generate basic excitation force; S2: The intelligent control unit (6) outputs control commands to the servo adjustment motor (76) based on the preset compaction target value or compaction process curve and combined with GNSS positioning information. S3: The servo adjustment motor (76) drives the adjustment worm (75) to rotate, which in turn drives the internal gear ring (74) to rotate. Through the differential action of the planetary gear (73) and the planet carrier (72), the rotational speed and phase of the outer sleeve shaft (42) relative to the central main shaft (41) are changed, and the angle between the secondary eccentric block (44) and the main eccentric block (43) is dynamically adjusted to achieve stepless and continuous adjustment of the excitation force from minimum to maximum. S4: The piezoelectric ceramic sensor array (84) senses the triaxial vibration acceleration signal transmitted from the vibrating drum (2) in real time and transmits the signal to the intelligent control unit (6). S5: The intelligent control unit (6) analyzes and processes the vibration signal, calculates the effective value and spectral characteristics of the vibration acceleration, and generates control commands in real time by combining the correlation between the roadbed compaction degree and the vibration characteristics. S6: The intelligent control unit (6) controls the travel speed by adjusting the electromagnetic proportional valve of the hydraulic drive system (5) through the CAN bus, and at the same time outputs a signal to the servo adjustment motor (76) to precisely adjust the magnitude of the excitation force, forming a closed-loop intelligent control circuit of perception-analysis-decision-execution, so as to realize adaptive compaction of roadbeds with different fillers, different thicknesses and different moisture contents.

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