A device for controlling the thickness of asphalt pavement paving on highways

Abstract

This utility model discloses a device for controlling the thickness of asphalt pavement paving. The device includes an asphalt paver and thickness monitoring and control components installed on the left and right sides of its rear section. The asphalt paver consists of a machine body, a spreading auger roller, and a screed. The spreading auger roller evenly spreads the asphalt material, and the screed performs initial compaction. The thickness monitoring and control components include side support rods, L-shaped rods, and infrared distance sensors. The front and rear infrared distance sensors monitor the distance to the ground before and after paving, respectively, and the paving thickness is determined by calculating the difference. The device is also equipped with left and right tilting levels and front and rear tilting levels to monitor whether the infrared distance sensors are tilted, ensuring accurate measurements. Based on the measurement data, the control system can automatically adjust the paver's material feeding and travel speed, achieving effective control of the asphalt paving thickness, avoiding the defects of traditional methods, and improving paving quality.

Description

Technical Field

[0001] This utility model relates to the field of asphalt paver technology, specifically to a highway asphalt pavement paving thickness control device. Background Technology

[0002] In highway construction, asphalt pavement paving is a crucial step, and the uniformity of paving thickness directly affects pavement quality and service life. Traditional asphalt paving thickness control often employs the reference steel wire rope method. This method requires precisely laying reference steel wire ropes on both sides of the paving area beforehand, and indirectly controlling the paving thickness by sensing the distance between the paver and the steel wire ropes using sensors. However, this method has many drawbacks. Laying the reference steel wire ropes requires a large amount of manpower, and manual laying makes it difficult to ensure the absolute levelness and straightness of the steel wire ropes, easily introducing errors and leading to uneven paving thickness. During construction, the steel wire ropes may shift or deform due to external impacts or pulling, further affecting measurement accuracy. Furthermore, traditional methods cannot dynamically adjust the paving thickness in real time; once deviations occur, they are difficult to correct promptly, easily causing problems such as poor pavement smoothness and insufficient thickness, increasing later maintenance costs and difficulties. Therefore, those skilled in the art propose a solution for controlling the paving thickness of highway asphalt pavement. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a highway asphalt pavement paving thickness control device to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] The device includes an asphalt paver, with thickness monitoring and control components fixedly connected to both the left and right sides of the rear section of the asphalt paver. The asphalt paver includes a body, a screed fixedly connected to the rear side of the body, and a spreading auger roller rotatably mounted on the rear side of the body in front of the screed. Each thickness monitoring and control component includes a side support rod, L-shaped rods fixed to the front and rear ends of the side support rod, and infrared distance sensors fixed to the lower surface of the L-shaped rod. A left-right tilting level is fixedly connected to the rear side wall of each infrared distance sensor, and a front-back tilting level is fixedly connected to the outer side wall of each side support rod.

[0005] As a preferred embodiment of this utility model, the end of the infrared distance sensor on the front side away from the side support rod is fixedly connected to the left and right side walls of the machine body.

[0006] As a preferred embodiment of this utility model: the infrared emitting end of the infrared distance sensor on the front side is vertically oriented towards the ground, and is used to monitor the distance between the sensor and the ground before asphalt is laid.

[0007] As a preferred embodiment of this utility model: the infrared emitting end of the infrared distance sensor on the rear side is vertically oriented towards the ground, and is used to monitor the distance between the asphalt and the ground after paving.

[0008] As a preferred embodiment of this utility model, the left and right tilting level are arranged horizontally to monitor whether the infrared distance sensor is tilted to the left or right.

[0009] As a preferred embodiment of this utility model: the front and rear tilting level are arranged horizontally front and back, and are used to monitor whether the infrared distance sensor is tilted front and back.

[0010] As a preferred embodiment of this utility model, two locking screws penetrating the L-shaped rod are provided on both the left and right sides of the infrared distance sensor.

[0011] As a preferred embodiment of this utility model, each of the L-shaped rods has two threaded holes inside for tightening screws.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] This highway asphalt pavement paving thickness control device uses thickness monitoring and control components installed on both sides of the rear section of the asphalt paver. Two sets of infrared distance sensors monitor the distance between the paver and the ground before and after asphalt paving, respectively, calculating the difference to determine the paving thickness. This avoids the cumbersome manual laying of steel wire ropes required by traditional methods, reducing labor costs and human error. Left and right tilting levels and front and rear tilting levels monitor the infrared distance sensors in real time to ensure reliable measurement data. Based on the obtained difference data, the control system automatically adjusts the paver's material feeding and travel speed, achieving dynamic and precise control of the paving thickness. This effectively improves the quality of asphalt pavement paving, reduces pavement defects caused by uneven thickness, and extends the pavement's service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of an asphalt paver and a thickness monitoring and control system.

[0016] Figure 2 A schematic diagram of the overall structure of an asphalt paver;

[0017] Figure 3This is a schematic diagram of the overall structure of the thickness monitoring and control component;

[0018] Figure 4 This is an exploded view of the thickness monitoring and control components.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Asphalt paver; 1-1. Machine body; 1-2. Spreading auger roller; 1-3. Screw; 2. Thickness monitoring and control components; 2-1. Side support rod; 2-2. Left and right tilting level; 2-3. Front and rear tilting level; 2-4. L-shaped rod; 2-5. Locking screw; 2-6. Infrared distance sensor. Detailed Implementation

[0021] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0022] Example 1: A highway asphalt pavement paving thickness control device includes an asphalt paver 1, with thickness monitoring and control components 2 fixedly connected to both the left and right sides of the rear section of the asphalt paver 1. A screed 1-3 is fixedly connected to the rear side of the paver body 1-1, and a spreading auger roller 1-2 is rotatably mounted on the rear side of the paver body 1-1 in front of the screed 1-3. Side support rods 2-1 of the thickness monitoring and control components 2 are fixed to the left and right sides of the rear section of the asphalt paver 1. L-shaped rods 2-4 are fixed to the front and rear ends of the side support rods 2-1. Infrared distance sensors 2-6 are fixed to the lower surfaces of the L-shaped rods 2-4. The end of the front infrared distance sensor 2-6 away from the side support rod 2-1 is fixedly connected to the left and right side walls of the paver body 1-1. The infrared emitting end of the front infrared distance sensor 2-6 faces vertically towards the ground to monitor the distance to the ground before asphalt paving. The infrared emitting end of the rear infrared distance sensor 2-6 faces vertically towards the ground to monitor the distance to the ground after asphalt paving. A left-right tilting level 2-2 is fixedly connected to the rear side wall of the infrared distance sensor 2-6. The left-right tilting level 2-2 is arranged laterally to monitor whether the infrared distance sensor 2-6 is tilted left or right. A front-back tilting level 2-3 is fixedly connected to the outer side wall of the side support rod 2-1. The front-back tilting level 2-3 is arranged laterally to monitor whether the infrared distance sensor 2-6 is tilted forward or backward. Two locking screws 2-5 are provided on both the left and right sides of the infrared distance sensor 2-6, passing through an L-shaped rod 2-4. Two threaded holes are provided inside the L-shaped rod 2-4 for tightening the locking screws 2-5. During operation, as the asphalt paver 1 moves forward, the spreading auger roller 1-2 evenly spreads the asphalt material on the road surface, and the screed 1-3 initially compacts the spread asphalt. The front infrared distance sensor 2-6 monitors the distance between the asphalt paver and the ground in real time before asphalt is laid, while the rear infrared distance sensor 2-6 monitors the distance after asphalt is laid. The thickness of the asphalt paver is obtained by calculating the difference between these two distances. Simultaneously, the left-right tilting level 2-2 and the front-back tilting level 2-3 monitor the left-right and front-back tilting of the infrared distance sensor 2-6, respectively, to ensure the accuracy of the measurement data. Based on the obtained thickness difference data, the feeding and travel speed of the asphalt paver 1 are controlled, thereby controlling the paving thickness.

[0023] Example 2: The asphalt pavement paving thickness control device in this example is basically the same as in Example 1, except for the installation method of the thickness monitoring and control component 2. In this example, the side support rod 2-1 is connected to the adjustable brackets on the left and right sides of the rear section of the asphalt paver 1 by bolts. The adjustable brackets can adjust the height and angle of the side support rod 2-1 according to different paving needs. The L-shaped rod 2-4 is fixedly connected to the side support rod 2-1 by welding to enhance the stability of the connection. The infrared distance sensor 2-6 is fixed to the lower surface of the L-shaped rod 2-4 by a snap-fit ​​structure for easy disassembly and replacement. The left and right tilting level 2-2 and the front and rear tilting level 2-3 are glued to their respective positions. During operation, after the asphalt paver 1 is started, the front infrared distance sensor 2-6 and the rear infrared distance sensor 2-6 start working respectively to monitor the distance to the ground. The left and right tilting level 2-2 and the front and rear tilting level 2-3 provide real-time feedback on the tilt status of the infrared distance sensor 2-6. When the asphalt paving thickness is detected to exceed the normal threshold, the control system adjusts the material feed and travel speed of the asphalt paver 1 according to the difference data, so that the paving thickness is restored to the normal range.

[0024] Example 3: The asphalt pavement paving thickness control device in this example also includes an asphalt paver 1 and a thickness monitoring and control component 2. The structure of the asphalt paver 1 is the same as in Example 1. In the thickness monitoring and control component 2, the side support rod 2-1 is made of lightweight, high-strength aluminum alloy, reducing the overall weight of the device. The L-shaped rod 2-4 is made of stainless steel with rust-proof treatment. The infrared distance sensor 2-6 is fixed in the mounting hole on the lower surface of the L-shaped rod 2-4 by a threaded connection. The locking screw 2-5 is made of stainless steel, and the infrared distance sensor 2-6 is firmly fixed by tightening the locking screw 2-5. The left and right tilting level 2-2 and the front and rear tilting level 2-3 are high-precision electronic levels, which can transmit tilt data to the control system in real time. During the paving operation, the asphalt paver 1 moves along the set route. The front infrared distance sensor 2-6 continuously measures the distance between the asphalt paver and the ground before paving, and the rear infrared distance sensor 2-6 measures the distance between the paver and the ground after paving. The control system receives data from the left-right tilting level 2-2 and the front-back tilting level 2-3, and corrects the measurement data from the infrared distance sensor 2-6. Based on the corrected distance difference, the control system automatically adjusts the material feeding and travel parameters of the asphalt paver 1 to control the asphalt paving thickness.

[0025] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows:

[0026] The asphalt paver 1 starts and moves along the preset route. The spreading auger roller 1-2, which is rotated on the rear side of the machine body 1-1, begins to operate, spreading the asphalt evenly to both sides. At the same time, the screed 1-3, fixed to the rear side of the machine body 1-1, performs preliminary compaction of the spread asphalt. At this time, the front infrared distance sensor 2-6, installed on the thickness monitoring and control components 2 on the left and right sides of the rear section of the asphalt paver 1, starts to work. Its infrared emitter is vertically facing the ground, monitoring the distance between the sensor and the ground before asphalt is spread in real time. Since the end of the front infrared distance sensor 2-6 away from the side support rod 2-1 is fixedly connected to the left and right side walls of the machine body 1-1, the relative stability of the measurement position is ensured. As the asphalt paver 1 moves forward, the asphalt is spread on the road surface, and the infrared emitter of the rear infrared distance sensor 2-6, also vertically facing the ground, begins to monitor the distance between the rear infrared distance sensor and the ground after asphalt is spread. During the monitoring process, the left and right tilting level 2-2, which is fixed to the rear side wall of the infrared distance sensor 2-6, works continuously. Because it is arranged horizontally left and right, it can monitor in real time whether the infrared distance sensor 2-6 is tilted left or right. If tilting occurs, its monitoring data will be fed back to the control system so that the measurement data can be adjusted accordingly. The front and back tilting level 2-3, which is fixed to the outer side wall of the side support rod 2-1, is arranged horizontally front and back and is used to monitor whether the infrared distance sensor 2-6 is tilted front and back. It will also feed back the tilting information to the control system.

[0027] After the asphalt paver 1 completes the paving of a section of road, the control system acquires the distance data between the asphalt paver 1 and the ground before asphalt paving, measured by the front infrared distance sensor 2-6, and the distance data between the asphalt paver 1 and the ground after asphalt paving, measured by the rear infrared distance sensor 2-6. The difference between these two distances is calculated to determine the thickness of the asphalt paving for that section. The infrared distance sensor 2-6 is fixed to the lower surface of the L-shaped rod 2-4 by locking screws 2-5 passing through it on both sides. Two threaded holes inside the L-shaped rod 2-4 for tightening the locking screws 2-5 ensure the stability of the infrared distance sensor 2-6 installation. The control system compares the obtained asphalt paving thickness difference data with a preset normal threshold. If the difference exceeds the normal threshold range, the control system automatically adjusts the material feed rate of the asphalt paver 1 according to the specific deviation. For example, if the thickness is too thin, the feed rate is increased; if the thickness is too thick, the feed rate is decreased. Simultaneously, the control system adjusts the travel speed of the asphalt paver 1. If the thickness is too thin, the travel speed is appropriately reduced to extend the paving time and increase the amount of asphalt paved; if the thickness is too thick, the travel speed is appropriately increased to reduce the amount of asphalt paved. Through the coordinated adjustment of the material quantity and travel speed, dynamic control of the asphalt paving thickness is achieved, ensuring that the thickness of the subsequently paved asphalt pavement meets the requirements. Throughout the paving process, the left and right tilting level 2-2 and the front and rear tilting level 2-3 continuously monitor the tilt status of the infrared distance sensor 2-6 to ensure the reliability of the measurement data. This allows the control system to make reasonable adjustment decisions based on accurate thickness data until the asphalt paving work of the entire road surface is completed.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for controlling the thickness of a highway asphalt pavement, comprising an asphalt paver (1), characterized in that: The asphalt paver (1) has thickness monitoring and control components (2) fixedly connected to both the left and right sides of the rear section. The asphalt paver (1) includes a body (1-1), a screed (1-3) fixedly connected to the rear side of the body (1-1), and a spreading auger roller (1-2) rotatably disposed on the rear side of the body (1-1) and in front of the screed (1-3). Each thickness monitoring and control component (2) includes a side support rod (2-1), an L-shaped rod (2-4) fixed to the front and rear ends of the side support rod (2-1), and an infrared distance sensor (2-6) fixed to the lower surface of the L-shaped rod (2-4). The infrared distance sensor (2-6) is fixedly connected to the rear side wall of the infrared distance sensor (2-6) with a left and right tilting level (2-2), and the side support rod (2-1) is fixedly connected to the outer side wall with a front and rear tilting level (2-3).

2. A highway asphalt paving thickness control device as claimed in claim 1, wherein: The end of the infrared distance sensor (2-6) on the front side away from the side support rod (2-1) is fixedly connected to the left and right side walls of the body (1-1).

3. A highway asphalt paving thickness control device as claimed in claim 1, wherein: The infrared emitter of the infrared distance sensor (2-6) mentioned on the front side is vertically oriented towards the ground and is used to monitor the distance between the sensor and the ground before asphalt is laid.

4. A highway asphalt paving thickness control device as claimed in claim 1, wherein: The infrared emitter of the infrared distance sensor (2-6) on the rear side is vertically oriented towards the ground and is used to monitor the distance between the asphalt and the ground after paving.

5. A highway asphalt paving thickness control device as claimed in claim 1, wherein: The left and right tilt level (2-2) are arranged horizontally to monitor whether the infrared distance sensor (2-6) is tilted to the left or right.

6. A highway asphalt paving thickness control device as claimed in claim 1, wherein: The front and rear tilt level (2-3) are arranged horizontally front and rear to monitor whether the infrared distance sensor (2-6) is tilted front and rear.

7. A highway asphalt paving thickness control device as claimed in claim 1, wherein: The infrared distance sensor (2-6) has two locking screws (2-5) that pass through the L-shaped rod (2-4) on both the left and right sides.

8. A highway asphalt paving thickness control device as claimed in claim 1, wherein: The L-shaped rod (2-4) has two threaded holes inside for tightening screws (2-5).

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