Roadbase paving thickness regulation and control device and regulation and control method

Abstract

The invention is suitable for the technical field of road base paving, and provides a road base paving thickness regulating and controlling device and a regulating and controlling method, and the device comprises a paver, a thickness self-adaptive compensation mechanism, a thickness regulating and controlling mechanism and an ironing plate. According to the device, through deep fusion of a thickness self-adaptive compensation mechanism and a laser detection technology, the control precision of the paving thickness is remarkably improved, a laser generator integrated in a protection box and a detection plate form a high-precision detection path, and a reference position can be quickly calibrated by matching with an elastic buffer design of a screw rod driven by a handle and a spring rod; initial installation errors are effectively eliminated, the detection plate can adapt to pavement microcosmic fluctuation through an adjustable supporting structure of the balls and the connecting plate, the stability of laser reflection signals is ensured, and the controller is based on the thickness deviation value fed back in real time.

Description

A road base paving thickness control device and control method Technical Field

[0001] This application relates to the field of road base paving technology, specifically to a road base paving thickness control device and control method. Background Technology

[0002] In the construction of road base paving, pavers are usually used for paving. The pavers need to adjust the thickness during operation to work on the road surface. Traditional pavers mainly rely on the operator's experience or mechanical slope gauges to control the paving thickness.

[0003] However, the above solutions still have some problems: 1. They lack high-precision real-time dynamic detection capabilities. Traditional equipment mostly uses contact wires or mechanical probes to sense elevation. These devices are easily affected by dust, vibration and temperature changes at the construction site, which causes the detection data to drift and cannot accurately reflect the real deviation between the actual paved surface and the reference surface, thus causing uneven base thickness and affecting the overall bearing capacity of the road.

[0004] 2. Thickness adjustment response is lagging and lacks precision. Conventional pavers often use manual screws or simple hydraulic cylinders to adjust the screed height. The adjustment process has obvious mechanical gaps and hysteresis effects. When encountering large roadbed undulations, the equipment cannot react in time, often resulting in over-pressure or under-pressure. Manual intervention is required to repeatedly stop the machine for correction, which seriously affects construction efficiency and continuity.

[0005] 3. Poor coordination between compaction and thickness control: Existing technologies usually separate the adjustment of paving thickness from the subsequent vibration compaction process, failing to form an integrated closed-loop control. This results in local areas settling due to insufficient compaction after the base course is paved, or aggregate breakage due to over-compaction, making it difficult to meet the stringent requirements of high-grade highways for base course flatness and density. Summary of the Invention

[0006] This invention provides a road base paving thickness control device and control method, aiming to solve the problems mentioned in the background art.

[0007] This invention is implemented as follows: a road base paving thickness control device and control method, comprising: a paver, which serves as a load-bearing foundation and has a base at its bottom; a thickness adaptive compensation mechanism, which is installed at the front end of the paver and includes a protective box, a controller, a laser generator, and a detection plate; a thickness control mechanism, which is signal-connected to the thickness adaptive compensation mechanism and includes a motor, an electric push rod, a transmission plate, and a transmission component; and a screed, which is connected to the thickness control mechanism via a hydraulic rod and is used to compact the base surface.

[0008] Furthermore, the thickness adaptive compensation mechanism also includes a handle, a lead screw, and a connector. The protective box is fixed to the front end of the paver and the controller is installed inside. The laser generator and the detection plate are respectively installed on both sides of the protective box to form a laser detection path. The lead screw is driven to rotate by the handle, and the detection plate is displaced through the connector to calibrate the reference position. A fixing plate is fixedly connected to the outside of the connector, and one end of the fixing plate is fixedly connected to the top of the protective box.

[0009] Furthermore, the thickness adaptive compensation mechanism also includes a spring rod and a reflector. The spring rod is connected to a connector and a detection plate at both ends to provide elastic buffering. The reflector is fixed inside the detection plate and is positioned opposite to the laser generator emitting end.

[0010] Furthermore, the detection plate is provided with: ball bearings and a connecting plate. The ball bearings are embedded in the contact interface between the detection plate and the connecting plate, and the connecting plate is connected to the paver through a support plate to form an adjustable support structure.

[0011] Furthermore, the thickness adjustment mechanism also includes: a vibrating plate, a roller, and an extrusion ball. The electric push rod is vertically installed at the output end of the motor, and its telescopic end drives the transmission plate to move up and down. The transmission component is a gear set that meshes with the rack and pinion structure of the transmission plate. The vibrating plate is connected to the transmission plate through a connecting component. The roller and extrusion ball are located at the bottom of the vibrating plate.

[0012] Furthermore, the vibrating plate is connected to the transmission plate via a support plate. The support plate is a double-layer composite steel structure, with the upper layer being a wear-resistant steel plate and the lower layer being a shock-absorbing rubber layer. The roller and extrusion ball are located at the bottom of the vibrating plate.

[0013] Furthermore, the hydraulic rod is a double-acting hydraulic cylinder with a telescopic stroke of 0-300mm, and the bottom of the base is equipped with adjustable feet to compensate for ground slope errors.

[0014] Furthermore, the hydraulic rod is wirelessly connected to the controller.

[0015] Furthermore, the surface of the roller is covered with a rubber layer, and the extrusion balls are steel spheres with a diameter of Φ50-80mm, arranged in a quincunx pattern.

[0016] Furthermore, a method for controlling the thickness of road base paving includes the following steps: S1: Start the paver and establish an initial thickness benchmark using a laser generator and a detection plate; S2: The controller calculates the real-time thickness deviation ΔH based on the laser feedback signal; S3: When |ΔH| > a preset threshold, start the motor to drive the electric push rod, which in turn drives the screed to rise and fall by Δh = 0.8ΔH via a transmission plate; S4: The vibrating plate vibrates synchronously, and the base layer is compacted a second time using rollers and extrusion balls; S5: Fine-tune the screed's posture using hydraulic rods to ensure lateral flatness; S6: Upload the thickness data to a remote monitoring terminal to generate a construction quality report.

[0017] Compared with related technologies, the road base paving thickness control device and control method provided by the present invention have the following beneficial effects: 1. The device significantly improves the control accuracy of paving thickness through the deep integration of thickness adaptive compensation mechanism and laser detection technology. The laser generator integrated in the protective box and the detection plate form a high-precision detection path. With the elastic buffer design of the screw and spring rod driven by the handle, the reference position can be quickly calibrated, effectively eliminating the initial installation error. The detection plate can adapt to the micro-undulations of the road surface through the adjustable support structure of the ball and the connecting plate, ensuring the stability of the laser reflection signal. Based on the real-time feedback thickness deviation value, the controller drives the screed to rise and fall precisely by 0.8 times the deviation amount through the transmission components of motor, electric push rod and gear set, avoiding over-adjustment or under-adjustment. Combined with the lateral fine adjustment of the screed posture by the hydraulic rod and the slope compensation of the adjustable support feet of the base, the paving thickness error can be controlled within a very small range, greatly improving the flatness and uniformity of the base and reducing the rework cost in the later stage.

[0018] 2. The synergistic effect of the vibrating plate, roller, and extrusion balls in the thickness control mechanism significantly enhances the density and forming quality of the base material. The electric push rod drives the transmission plate to vibrate the vibrating plate at high frequency. The roller with a rubber layer at its bottom can evenly distribute the pressure, while the steel extrusion balls arranged in a quincunx pattern focus on compacting the corner areas, effectively eliminating voids inside the material and improving the load-bearing capacity of the base. The support plate adopts a double-layer composite steel structure. The upper wear-resistant steel plate ensures mechanical strength, while the lower shock-absorbing rubber layer absorbs vibration impact and extends the service life of the equipment. At the same time, the signal linkage between the thickness adaptive compensation mechanism and the control mechanism, combined with the real-time data upload and quality report generation of the remote monitoring terminal, not only improves the level of construction automation but also provides accurate data support for project acceptance.

[0019] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0021] Figure 1 is a schematic diagram of the structure of the present invention; Figure 2 is a schematic diagram of the top structure of the present invention; Figure 3 is a schematic diagram of the outer structure of the present invention; Figure 4 is an enlarged view of section A in Figure 3 of the present invention; Figure 5 is a schematic diagram of the internal structure of the protective box of the present invention; Figure 6 is a schematic diagram of the structure of the motor part of the present invention; Figure 7 is an enlarged view of section B in Figure 6 of the present invention.

[0022] Icons: 1. Paver; 2. Thickness adaptive compensation mechanism; 201. Protective box; 202. Controller; 203. Handle; 204. Lead screw; 205. Connector; 206. Fixing plate; 207. Spring rod; 208. Laser generator; 209. Detection plate; 210. Support plate; 211. Ball bearing; 212. Connecting plate; 213. Reflector; 3. Thickness adjustment mechanism; 301. Motor; 302. Electric push rod; 303. Transmission plate; 304. Transmission component; 305. Vibrating plate; 306. Connector; 307. Roller; 308. Extrusion ball; 4. Screed; 5. Hydraulic rod; 6. Base. Detailed Implementation

[0023] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0024] Example 1: A preferred embodiment of the road base paving thickness control device and method provided by the present invention is shown in Figures 1 to 7. The device and method include a paver 1, a thickness adaptive compensation mechanism 2, a thickness control mechanism 3, and a screed 4. The paver 1 serves as the load-bearing foundation, with a base 6 at its bottom. The thickness adaptive compensation mechanism 2 is installed at the front end of the paver 1 and includes a protective box 201, a controller 202, a laser generator 208, and a detection plate 209. The thickness control mechanism 3 is signal-connected to the thickness adaptive compensation mechanism 2 and includes a motor 301, an electric push rod 302, a transmission plate 303, and a transmission component 304. The screed 4 is connected to the thickness control mechanism 3 via a hydraulic rod 5 and is used to compact the base surface.

[0025] In this embodiment, after the system is powered on and started, the paver 1 moves forward. The laser generator 208 in the thickness adaptive compensation mechanism 2 emits a laser beam to the detection plate 209. The detection plate 209 receives the reflected signal in real time and transmits the data to the controller 202. The controller 202 analyzes the height difference between the current paved surface and the set benchmark through the built-in algorithm. When the thickness deviation is detected, it immediately sends a command to the thickness control mechanism 3. The motor 301 drives the electric push rod 302 to extend and retract. Through the transmission component 304, the transmission plate 303 and the screed 4 are driven to move vertically up and down, thereby dynamically correcting the paving thickness and ensuring that each base layer meets the design elevation. The screed 4 is kept horizontal with the assistance of the hydraulic rod 5 to perform preliminary compaction of the mixture.

[0026] In a further preferred embodiment of the present invention, the thickness adaptive compensation mechanism 2 further includes a handle 203, a lead screw 204, and a connector 205. The protective box 201 is fixed to the front end of the paver 1 and has a controller 202 inside. The laser generator 208 and the detection plate 209 are respectively installed on both sides of the protective box 201 to form a laser detection path. The lead screw 204 is driven to rotate by the handle 203, and the detection plate 209 is moved by the connector 205 to calibrate the reference position. A fixing plate 206 is fixedly connected to the outside of the connector 205, and one end of the fixing plate 206 is fixedly connected to the top of the protective box 201.

[0027] In this embodiment, before formal paving, the operator needs to perform benchmark calibration. By rotating the handle 203, the lead screw 204 is driven to rotate. The lead screw 204 converts the rotational force into the linear thrust of the connector 205, which in turn pushes the detection plate 209 to move back and forth along the guide rail. This process is used to adjust the relative distance between the laser generator 208 and the detection plate 209 so that it accurately corresponds to the base thickness benchmark required by the design. When the reflector 213 on the inner side of the detection plate 209 coincides with the center of the laser optical path, the zero-position calibration is completed, ensuring that the starting point of the system detection is accurate under different working conditions, and providing a reliable reference system for subsequent dynamic compensation.

[0028] In a further preferred embodiment of the present invention, the thickness adaptive compensation mechanism 2 further includes a spring rod 207 and a reflector plate 213. The two ends of the spring rod 207 are respectively connected to the connector 205 and the detection plate 209 to provide elastic buffering. The reflector plate 213 is fixed inside the detection plate 209 and is arranged opposite to the emitting end of the laser generator 208.

[0029] In this embodiment, the spring rod 207 provides the detection plate 209 with excellent flexibility and adaptability. When the paver 1 travels over road joints or uneven areas, the detection plate 209 will be subjected to an upward impact force. The spring rod 207 will then compress and deform to absorb the vibration energy, preventing hard impact from damaging the precision optical components. At the same time, the reflector 213 always maintains alignment with the laser generator 208, ensuring the integrity of the laser path even on bumpy roads. This design not only ensures the durability of the equipment under complex road conditions but also avoids measurement data jumps caused by machine shaking, greatly improving the system's anti-interference capability and detection stability.

[0030] In a further preferred embodiment of the present invention, the detection plate 209 is provided with a ball bearing 211 and a connecting plate 212. The ball bearing 211 is embedded in the contact interface between the detection plate 209 and the connecting plate 212. The connecting plate 212 is connected to the paver 1 through the support plate 210 to form an adjustable support structure.

[0031] In this embodiment, the detection plate 209 is not rigidly fixed to the machine body, but forms a rolling friction pair with the connecting plate 212 through the bottom ball bearings 211. When the roadbed has a transverse slope or longitudinal wavy undulation, the ball bearings 211 can roll flexibly on the surface of the connecting plate 212, guiding the detection plate 209 to follow the undulation, so that the laser reflective surface is always perpendicular to the laser beam, thereby eliminating the cosine error caused by the tilt of the detection plate 209. The connecting plate 212 is then connected to the paver 1 chassis through a high-strength support plate 210, forming a stable and flexible floating support structure, ensuring that the acquisition of detection data is not negatively affected by changes in the vehicle body posture.

[0032] In a further preferred embodiment of the present invention, the thickness adjustment mechanism 3 further includes a vibrating plate 305, a roller 307, and an extrusion ball 308. An electric push rod 302 is vertically installed at the output end of a motor 301, and its telescopic end drives the transmission plate 303 to move up and down. The transmission component 304 is a gear set that meshes with the rack and pinion structure of the transmission plate 303. The vibrating plate 305 is connected to the transmission plate 303 through a connecting component 306. The roller 307 and the extrusion ball 308 are disposed at the bottom of the vibrating plate 305.

[0033] In this embodiment, the thickness control mechanism 3 is not only the height execution unit, but also the core component of pre-compaction. When the electric push rod 302 pushes the transmission plate 303 to move up and down, it drives the vibrating plate 305 to move synchronously through the connector 205. The roller 307 at the bottom of the vibrating plate 305 first compacts the loose mixture after paving over a large area. The extrusion ball 308 that follows then embeds itself into the material in a point-like force manner, destroying the air gap between the aggregates and expelling the air gap. This combination of "pressing first and then extruding" can greatly improve the initial density of the material before the screed 4 is finally compacted, effectively preventing the paved layer from settling and deforming in the future.

[0034] In a further preferred embodiment of the present invention, the vibrating plate 305 is connected to the transmission plate 303 via a support plate 210. The support plate 210 is a double-layer composite steel structure, with the upper layer being a wear-resistant steel plate and the lower layer being a shock-absorbing rubber layer. The roller 307 and the extrusion ball 308 are disposed at the bottom of the vibrating plate 305.

[0035] In this embodiment, the support plate 210 adopts an innovative double-layer composite structure design. The high-hardness wear-resistant steel plate laid on the upper layer is directly hinged to the transmission plate 303, which can withstand huge shear force and impact force without being easily worn and broken. The high-damping shock-absorbing rubber layer pasted on the lower layer acts as a buffer pad, absorbing the reaction force from the roller 307 and the extrusion ball 308 as well as the high-frequency vibration transmitted from the engine. This not only protects the precision transmission components above from fatigue damage and extends the service life of the equipment, but also reduces the noise of the whole machine through vibration reduction and improves the construction and operation environment.

[0036] Example 2: Based on Example 1, a preferred embodiment of the road base paving thickness control device and control method provided by the present invention is shown in Figures 1 to 7: the hydraulic rod 5 is a double-acting hydraulic cylinder with a telescopic stroke of 0-300mm, and the base 6 is provided with adjustable feet at the bottom to compensate for ground slope errors.

[0037] In this embodiment, the hydraulic rod 5 serves as a fine-tuning device for the attitude of the screed 4. It has a bidirectional telescopic function and can independently adjust the support height of the left and right sides of the screed 4 according to the instructions of the controller 202. When the paver 1 travels on a roadbed with a certain slope, the adjustable feet at the bottom of the base 6 are first coarsely adjusted to adapt to the terrain, and then the hydraulic rod 5 is finely adjusted to forcefully maintain the horizontal state of the bottom surface of the screed 4, ensuring that the road surface can be compacted evenly regardless of the slope, avoiding the phenomenon of "one end higher than the other", thereby ensuring that the lateral flatness and longitudinal slope of the paved layer fully meet the design requirements.

[0038] In a further preferred embodiment of the present invention, the hydraulic rod 5 is wirelessly connected to the controller 202.

[0039] In this embodiment, the cumbersome wired connection method is abandoned. The hydraulic rod 5 has a built-in wireless receiving module and establishes a communication link directly with the controller 202. This wireless control mode eliminates the risk of cable breakage due to dragging, simplifies the complexity of the mechanical structure, and makes the arrangement of the hydraulic rod 5 more flexible and free. The controller 202 can send extension and retraction commands to the hydraulic rod 5 in milliseconds based on the real-time elevation data transmitted back by the thickness adaptive compensation mechanism 2, so as to realize rapid closed-loop control of the posture of the screed 4, which greatly improves the system response speed and the level of intelligence of construction.

[0040] In a further preferred embodiment of the present invention, the surface of the roller 307 is covered with a rubber layer, and the extrusion ball 308 is a steel ball with a diameter of Φ50-80mm, arranged in a quincunx pattern.

[0041] In this embodiment, the rubber layer on the surface of the roller 307 has high elasticity and anti-slip properties, which can provide sufficient friction to prevent slippage when in contact with high-temperature asphalt mixture, while protecting the surface of the mixture from being burned or stuck by the steel roller. The extrusion balls 308 at the bottom are solid steel balls of a specific diameter and are mechanically distributed in a quincunx pattern. This design can generate staggered and overlapping compaction trajectories, eliminate compaction blind spots, and ensure that the aggregate in each area can be fully rearranged and interlocked, thereby achieving the best pre-compacted density and structural strength.

[0042] In a further preferred embodiment of the present invention, a method for controlling the thickness of road base paving includes the following steps: S1: Start the paver 1 and establish an initial thickness benchmark through the laser generator 208 and the detection plate 209; S2: The controller 202 calculates the real-time thickness deviation ΔH based on the laser feedback signal; S3: When |ΔH|> a preset threshold, start the motor 301 to drive the electric push rod 302, which drives the screed 4 to rise and fall by Δh=0.8ΔH via the transmission plate 303; S4: The vibrating plate 305 vibrates synchronously, and the base layer is compacted a second time through the roller 307 and the extrusion ball 308; S5: The posture of the screed 4 is finely adjusted by the hydraulic rod 5 to ensure lateral flatness; S6: The thickness data is uploaded to the remote monitoring terminal to generate a construction quality report.

[0043] In summary, the working process of this road base paving thickness control device begins with the establishment of an initial reference. After the system is started, the operator drives the internal lead screw 204 to rotate by operating the handle 203 located on the protective box 201. This, in turn, drives the detection plate 209 to move through the connector 205. Under the elastic buffering effect of the spring rod 207, the reflector 213 on the inner side of the detection plate 209 is precisely aligned with the emitting end of the laser generator 208, thereby establishing a stable laser detection path and providing an accurate initial height reference for subsequent measurements.

[0044] After entering the paving operation stage, as the paver 1 moves forward, the ball bearings 211 at the bottom of the detection plate 209 slide flexibly on the connecting plate 212. Together with the adjustable support structure formed by the support plate 210, it ensures that the detection component can adapt to the micro-undulations of the road surface. When the roadbed is uneven, the beam path emitted by the laser generator 208 will change accordingly. This change is captured in real time by the controller 202 and the real-time thickness deviation value is quickly calculated. Once the system determines that the deviation exceeds the preset safety threshold, the thickness control program will be started immediately.

[0045] At this time, the motor 301 starts to work, driving the electric push rod 302 to perform vertical extension and retraction. The power is transmitted to the transmission plate 303 through the gear set, which is the transmission component 304. Since the transmission plate 303 adopts a rack and pinion structure, it can efficiently convert the rotational motion into linear motion, thereby directly driving the ironing plate 4 connected to it to perform lifting and lowering adjustment. According to the control algorithm, the adjustment amount of the ironing plate 4 is about 80% of the real-time thickness deviation. This proportional control method effectively prevents overshoot and ensures the smoothness of adjustment.

[0046] While adjusting the thickness, in order to improve the compactness of the base layer, the vibrating plate 305 connected to the transmission plate 303 will generate high-frequency vibration synchronously. The roller 307 at the bottom of the vibrating plate 305 is covered with a high wear-resistant rubber layer, while the steel extrusion balls 308 arranged in a quincunx pattern are responsible for handling the corner areas. Under the dual action of vibration and extrusion, the newly paved base material is further compacted, eliminating internal voids and significantly improving the bearing capacity of the road surface.

[0047] In addition, to ensure the lateral flatness of the entire paved surface, the system also introduces a hydraulic fine-tuning mechanism. The hydraulic rod 5 driven by the double-acting hydraulic cylinder can make subtle corrections to the posture of the screed 4. Together with the adjustable support feet at the bottom of the base 6, it can effectively compensate for unevenness caused by ground slope or mechanical movement errors. Throughout the construction process, all thickness data and equipment status information are uploaded to the remote monitoring terminal in real time via the wireless module, automatically generating a detailed construction quality report, thus realizing full-process digital management from on-site paving to quality monitoring.

[0048] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0049] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0051] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0052] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A road base paving thickness control device, characterized in that, include: A paver (6), which serves as a load-bearing foundation, has a base (601) at its bottom; a thickness adaptive compensation mechanism (2), which is installed at the front end of the paver (6), and includes a protective box (201), a controller (202), a laser generator (208), and a detection plate (209); a thickness control mechanism (3), which is signal-connected to the thickness adaptive compensation mechanism (2), and includes a motor (301), an electric push rod (302), a transmission plate (303), and a transmission component (304); and a screed (4), which is connected to the thickness control mechanism (3) via a hydraulic rod (5) and is used to compact the base surface.

2. The apparatus according to claim 1, characterized in that, The thickness adaptive compensation mechanism (2) further includes: a handle (203), a lead screw (204) and a connector (205). The protective box (201) is fixed to the front end of the paver (6) and the controller (202) is installed inside. The laser generator (208) and the detection plate (209) are respectively installed on both sides of the protective box (201) to form a laser detection path. The lead screw (204) is driven to rotate by the handle (203) and drives the detection plate (209) to move through the connector (205) to calibrate the reference position. A fixing plate (206) is fixedly connected to the outside of the connector (205), and one end of the fixing plate (206) is fixedly connected to the top of the protective box (201).

3. The apparatus according to claim 2, characterized in that, The thickness adaptive compensation mechanism (2) further includes a spring rod (207) and a reflector (213). The two ends of the spring rod (207) are respectively connected to a connector (205) and a detection plate (209) to provide elastic buffer. The reflector (213) is fixed inside the detection plate (209) and is arranged opposite to the emitting end of the laser generator (208).

4. The apparatus according to claim 3, characterized in that, The detection plate (209) is provided with a ball bearing (211) and a connecting plate (212). The ball bearing (211) is embedded in the contact interface between the detection plate (209) and the connecting plate (212). The connecting plate (212) is connected to the paver (6) through a support plate (210) to form an adjustable support structure.

5. The apparatus according to claim 1, characterized in that, The thickness adjustment mechanism (3) further includes: a vibrating plate (305), a roller (307) and an extrusion ball (308). The electric push rod (302) is vertically installed at the output end of the motor (301), and its telescopic end drives the transmission plate (303) to move up and down. The transmission component (304) is a gear set that meshes with the rack structure of the transmission plate (303). The vibrating plate (305) is connected to the transmission plate (303) through a connector (306). The roller (307) and the extrusion ball (308) are located at the bottom of the vibrating plate (305).

6. The apparatus according to claim 5, characterized in that, The vibrating plate (305) is connected to the transmission plate (303) through the support plate (210). The support plate (210) is a double-layer composite steel structure, with the upper layer being a wear-resistant steel plate and the lower layer being a shock-absorbing rubber layer. The roller (307) and the extrusion ball (308) are located at the bottom of the vibrating plate (305).

7. The apparatus according to claim 1, characterized in that, The hydraulic rod (5) is a double-acting hydraulic cylinder with a telescopic stroke of 0-300mm. The base (6) is equipped with adjustable feet at the bottom to compensate for ground slope errors.

8. The apparatus according to claim 1, characterized in that, The hydraulic rod (5) is wirelessly connected to the controller (202).

9. The apparatus according to claim 5, characterized in that, The surface of the roller (307) is covered with a rubber layer, and the extrusion ball (308) is a steel ball with a diameter of Φ50-80mm, arranged in a plum blossom pattern.

10. A method for adjusting the thickness of road base paving, applied to the apparatus described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Start the paver and establish an initial thickness reference using a laser generator and a detection plate; S2: The controller calculates the real-time thickness deviation ΔH based on the laser feedback signal; S3: When |ΔH| > preset threshold, the motor is started to drive the electric push rod, which drives the screed plate to rise and fall by Δh = 0.8ΔH via the transmission plate; S4: The vibrating plate vibrates synchronously, and the base layer is compacted a second time through the roller and the extrusion ball; S5: The posture of the screed plate is finely adjusted by the hydraulic rod to ensure lateral flatness; S6: The thickness data is uploaded to the remote monitoring terminal to generate a construction quality report.

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