Paving construction material conveying system based on ultrasonic detection technology and control method

Abstract

The invention relates to a paving construction material conveying system based on an ultrasonic detection technology and a control method, and relates to the technical field of paving construction material conveying, and the paving construction material conveying system comprises an ultrasonic sensor and a heat dissipation device. The ultrasonic sensor, the hydraulic system, the control system and the safety module are arranged, namely, the ultrasonic sensor is combined with the hydraulic system, so that the distance between the transfer trolley and the paver can be accurately controlled, manual intervention is reduced, the operation difficulty is reduced, and the safety of the paver is improved through data support of the control system. The construction safety and traceability are further improved, and the system is formed; distance measurement; calculating and adjusting the speed; according to the method, the ultrasonic sensor is arranged, the initial distance calibration and alarm functions are achieved, efficient measurement construction activities are carried out, high efficiency, stability and intelligence of road construction are guaranteed, a heat dissipation device is arranged in the ultrasonic sensor, and the effects of various power-assisted heat dissipation and auxiliary dustproof protection are achieved.

Description

Technical Field

[0001] This application relates to the technical field of material transportation in paving construction, and in particular, to a paving construction material transportation system and control method based on ultrasonic detection technology. Background Art

[0002] Currently, in traditional paving construction, the distance between the transfer vehicle and the paver is usually manually controlled by an operator. The operator judges the distance between the two by visual inspection or simple distance measuring tools and manually adjusts the walking speed of the transfer vehicle to ensure that the paver can continuously receive materials. This manual operation not only results in a high labor intensity but also causes material waste due to operation deviation, increasing the workload of subsequent manual cleaning.

[0003] In view of the above related technologies, a paving construction material transportation system and control method based on ultrasonic detection technology are proposed to accurately control the distance between the transfer vehicle and the paver, reduce manual intervention, lower the operation difficulty, and improve the paving material transportation efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a paving construction material transportation system and control method based on ultrasonic detection technology to solve the problems raised in the above background art.

[0005] In a first aspect, a paving construction material transportation system based on ultrasonic detection technology provided by this application adopts the following technical solutions: It includes an ultrasonic sensor, a hydraulic system, a control system, and a safety module; among them, The ultrasonic sensor is connected to the outer end of the externally provided transfer vehicle and is used to measure the distance between the transfer vehicle and the paver in real time; The hydraulic system includes a hydraulic pump connected to an oil tank, which is used to provide continuous and stable oil pressure for the hydraulic circuit to ensure the power output of the actuator; an electro-hydraulic proportional valve connected to the oil outlet end of the hydraulic pump, which is used to accurately adjust the flow rate and direction of the hydraulic oil according to the controller signal; a hydraulic cylinder, which is an actuator of the hydraulic system, connected to the oil inlet and outlet ends of the electro-hydraulic proportional valve, which is used to convert hydraulic energy into mechanical energy and accurately control the walking speed of the transfer vehicle by receiving the adjusted hydraulic oil; a pressure sensor connected to the internal pipelines of the hydraulic pump and the electro-hydraulic proportional valve and connected to an external controller, which is used to monitor the pressure of the hydraulic circuit in real time and feedback to the control system to judge the load state or abnormality; a flow sensor connected in series with the main oil pipe between the hydraulic pump and the electro-hydraulic proportional valve and connected to an external controller, which is used to detect the flow rate of the hydraulic oil and assist the controller to dynamically adjust the opening of the electro-hydraulic proportional valve to ensure that the action speed of the actuator is consistent with the preset value; A control system is used to receive data from ultrasonic sensors, calculate the required traveling speed of the transporter according to a preset control algorithm, adjust the hydraulic system to achieve automatic speed control, and also has a distance alarm function; A safety module is used for early warning of the distance between the transporter and the paver and anti-collision early warning to improve the safety of transportation.

[0006] Preferably, the ultrasonic sensor is communicatively connected to the control system by wired or wireless means.

[0007] Preferably, the control system includes a processor, a memory, an input / output interface, and an audible and visual alarm device. Among them, The processor, as the control core, is responsible for receiving sensor signals, executing preset algorithms, and outputting control instructions; The memory is used to store preset parameters, real-time operation data, and fault codes; The input / output interface is used to connect sensors and the hydraulic system to collect real-time data; The audible and visual alarm device is used to trigger an alarm to remind the driver to make corresponding adjustments in a timely manner.

[0008] In a second aspect, the present application also provides a control method for a paving construction material conveying system based on ultrasonic detection technology, including the following steps: S1. System composition: Initialize the ultrasonic sensor, hydraulic system, control system, and safety module; S2. Distance measurement: The ultrasonic sensor measures the distance between the transporter and the paver in real time and transmits the measurement data to the control system in real time; S3. Speed calculation and adjustment: The control system calculates the required traveling speed of the transporter by receiving data from the ultrasonic sensor and combining with a preset algorithm, and adjusts the hydraulic system through the control system to achieve automatic adjustment of the traveling speed of the transporter to ensure that it remains relatively stationary with the paver; S4. Initial distance calibration: Before construction, adjust the initial distance between the ultrasonic sensor and the paver; S5. Alarm function: When the distance between the transporter and the paver exceeds the preset range, the control system and the safety module cooperate to trigger the alarm function to remind the staff to make adjustments in a timely manner.

[0009] By adopting the above technical solutions, that is, through the combination of the ultrasonic sensor and the hydraulic system, precise control of the distance between the transporter and the paver is achieved, manual intervention is reduced, the operation difficulty is lowered, and at the same time, through the distance alarm function, the safety and traceability of construction are further improved, providing an efficient, stable, and intelligent solution for road construction.

[0010] Preferably, the step used in step S3 is the proportional-integral-derivative (PID) control algorithm, that is, by collecting the relative position error between the transporter and the paver in real time, and dynamically adjusting the output control quantity in combination with the historical error accumulation value and the error change rate, the closed-loop regulation of the walking speed is realized.

[0011] Preferably, in step S5, the control system is linked for early warning through an acoustic-optic alarm device, and the acoustic-optic alarm device can be realized by a buzzer and an LED warning light. At the same time, the safety module in step S5 includes distance early warning and anti-collision early warning.

[0012] By adopting the above technical solution, that is, through the cooperation of the buzzer and the LED warning light, the combined early warning of high-frequency sound alarm and light flashing can be carried out respectively.

[0013] By adopting the above technical solution, the ultrasonic sensor can have the effect of pre-adjusting the position, so that the distance between it and the paver can be flexibly adjusted, ensuring the accuracy of the measurement data and the reliability of the system.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting an ultrasonic sensor, a hydraulic system, a control system and a safety module in the present invention, that is, the combination of the ultrasonic sensor and the hydraulic system, the precise control of the distance between the transporter and the paver can be realized, reducing manual intervention, lowering the operation difficulty, and further improving the safety and traceability of the construction through the data support of the control system. And through steps such as system composition; distance measurement; speed calculation and adjustment; initial distance calibration; alarm function, etc., to carry out efficient measurement construction activities, ensuring the high efficiency, stability and intelligence of road construction. And a heat dissipation device is provided in the ultrasonic sensor to meet diverse heat dissipation assistance and auxiliary dust protection; 2. By setting a hydraulic system in the present invention, the hydraulic system includes a hydraulic pump; an electro-hydraulic proportional valve; a hydraulic cylinder; a pressure sensor and a flow sensor, that is, by receiving the instructions of the control system, the intelligent adjustment of the flow and pressure of the hydraulic oil is realized, and the automatic adjustment of the speed of the transporter is realized; 3. A heat dissipation device is provided in the present invention. That is, when the motor is running, the simultaneous rotation of the support disk and the first bevel gear can be realized. At the same time, the support disk can also realize the rotation of the second bevel gears connected to the left and right upper ends. In this way, under the rotation of the first bevel gear, the two second bevel gears can not only rotate self but also revolve, so as to greatly enhance the wind power assistance effect of the two first fan blades for heat discharge. At the same time, the rotating shaft connected to the upper end of the first bevel gear can also rotate, realizing the rotation drive of the second fan blade connected to the outside of the upper end, to assist in quickly discharging the heat generated inside the sensor housing downward, reducing the problem of heat accumulation.

[0015] 4. The present invention is provided with a self-opening and closing component, namely a rotating shaft that rotates with the first bevel gear, which can also realize the rotation of the third bevel gear docked at the top. When the third bevel gear rotates, the fourth bevel gears engaged on both sides can rotate simultaneously, and cooperate with the first connecting rod docked in the middle to drive the corresponding external driving wheel to rotate. The driving wheel can then drive the rotation of the driven wheel connected at the bottom through an externally connected belt. When the driven wheel rotates, the second connecting rod docked in the middle of the driven wheel will realize the synchronous rotation of the turntable provided inside the protection mechanism, causing the turntable to rotate rapidly to centrifugally move the blocking block provided at the installation groove inside, and when the blocking block moves outward, the blocking of the air outlet groove will be released, enabling the heat assisted by the wind force to be quickly discharged, ensuring the high efficiency of the heat dissipation process; 5. The present invention is provided with a connecting rod, a docking cylinder and a spring, that is, when the blocking block moves outward along the inside of the installation groove under the action of centrifugal force, it will push the connecting rod docked on one side, causing the connecting rod to deeply insert into the docking cylinder and compress the spring provided inside the docking cylinder. When subsequent heat dissipation activities are not required, the compressed spring will automatically elastically recover and assist in pushing the connecting rod outward, enabling the connecting rod to synchronously push the blocking block back, that is, automatically block the air outlet groove, ensuring that when heat dissipation activities are not carried out, external dust cannot enter the inside of the housing through the air outlet groove, realizing auxiliary dust protection cooperation. Description of the Drawings

[0016] Figure 1 is the schematic diagram of the system composition structure of the present application; Figure 2 is the schematic diagram of the hydraulic system composition structure of the present application; Figure 3 is the schematic diagram of the construction process of the present application; Figure 4 is the schematic diagram of the ultrasonic sensor structure of the present application; Figure 5 is the front view combined structure schematic diagram of the ultrasonic sensor and the heat dissipation device of the present application; Figure 6 is the front view internal structure schematic diagram of the heat dissipation device of the present application; Figure 7 is the front view internal structure schematic diagram of the self-opening and closing component of the present application; Figure 8 is the schematic diagram of the unopened structure of the protection mechanism of the present application; Figure 9 is the schematic diagram of the rotation and centrifugal opening of the protection mechanism of the present application.

[0017] Description of reference numerals: 1, connecting frame; 2, base; 3, cylinder; 4, sensor housing; 5, ultrasonic transmitter; 6, ultrasonic receiver; 7, heat dissipation device; 71, connecting frame; 72, housing; 73, receiving frame; 74, motor; 75, support disk; 76, first bevel gear; 77, second bevel gear; 78, first fan blade; 79, rotating shaft; 710, second fan blade; 711, self-opening and closing assembly; 7111, third bevel gear; 7112, fourth bevel gear; 7113, first connecting rod; 7114, driving wheel; 7115, belt; 7116, driven wheel; 7117, second connecting rod; 7118, protection mechanism; 71181, turntable; 71182, mounting groove; 71183, plugging block; 71184, connecting shaft; 71185, air outlet groove; 71186, connecting rod; 71187, docking cylinder; 71188, spring; 7119, air outlet cylinder. Detailed implementation manners

[0018] The following will Figure 1 - be described Figure 9 in further detail in conjunction with the attached drawings for this application.

[0019] In a first aspect, this application proposes a paving construction material conveying system based on ultrasonic detection technology. Referring to Figure 1 and Figure 2 , it includes an ultrasonic sensor, a hydraulic system, a control system and a safety module; among them, The ultrasonic sensor is connected to the outer end of a transfer vehicle provided outside, and is used to measure the distance between the transfer vehicle and the paver in real time; The hydraulic system includes a hydraulic pump connected to an oil tank, which is used to provide continuous and stable oil pressure for the hydraulic circuit to ensure the power output of the actuator; an electro-hydraulic proportional valve connected to the outlet end of the hydraulic pump, which is used to precisely adjust the flow rate and direction of the hydraulic oil according to the controller signal; a hydraulic cylinder, which is an actuator of the hydraulic system and is responsible for converting hydraulic energy into mechanical energy. In the paving construction material conveying system, the hydraulic cylinder generates linear or rotational motion by receiving the adjusted hydraulic oil, thereby driving the traveling mechanism of the transfer vehicle to achieve precise control of the traveling speed of the transfer vehicle; a pressure sensor is connected to the internal pipelines of the hydraulic pump and the electro-hydraulic proportional valve and is connected to an external controller, which is used to monitor the hydraulic circuit pressure in real time and feedback it to the control system to judge the load state or abnormality; a flow sensor is connected in series with the main oil pipe between the hydraulic pump and the electro-hydraulic proportional valve and is connected to an external controller, which is used to detect the flow rate of the hydraulic oil and assist the controller to dynamically adjust the opening of the electro-hydraulic proportional valve to ensure that the action speed of the actuator is consistent with the preset value; The control system is used to receive the data of the ultrasonic sensor, calculate the required traveling speed of the transfer vehicle according to the preset control algorithm, and adjust the hydraulic system to achieve automatic speed control, and at the same time has a distance alarm function; A safety module for warning the distance between the transfer vehicle and the paver and for anti-collision warning, improving the transfer safety.

[0020] Among them, the ultrasonic sensor is communicatively connected to the control system by wire or wirelessly.

[0021] Among them, the control system includes a processor, a memory, an input / output interface, and an audible and visual alarm device. Among them, The processor, as the control core, is responsible for receiving sensor signals, executing preset algorithms, and outputting control instructions; The memory is used to store preset parameters, real-time operation data, and fault codes; The input / output interface is used to connect the sensor and the hydraulic system to collect real-time data; The audible and visual alarm device is used to trigger an alarm to remind the driver to make corresponding adjustments in time.

[0022] In a second aspect, the present application also proposes a control method for a paving construction material conveying system based on ultrasonic detection technology. See Figure 3 , including the following steps: S1. System composition: Initialize the ultrasonic sensor, the hydraulic system, the control system, and the safety module; S2. Distance measurement: The ultrasonic sensor measures the distance between the transfer vehicle and the paver in real time and transmits the measurement data to the control system in real time; S3. Speed calculation and adjustment: The control system receives the data from the ultrasonic sensor and, in combination with a preset algorithm, calculates the required traveling speed of the transfer vehicle, and adjusts the hydraulic system through the control system to automatically adjust the traveling speed of the transfer vehicle to ensure that it remains relatively stationary with the paver; S4. Initial distance calibration: Before construction, adjust the initial distance between the ultrasonic sensor and the paver; S5. Alarm function: When the distance between the transfer vehicle and the paver exceeds the preset range, the control system and the safety module cooperate to trigger the alarm function to remind the staff to make adjustments in time.

[0023] Secondly, the above control method can achieve precise control of the distance between the transfer vehicle and the paver through the combination of the ultrasonic sensor and the hydraulic system, reduce manual intervention, lower the operation difficulty, and at the same time, through the distance alarm function, further improve the safety and traceability of construction, providing an efficient, stable, and intelligent solution for road construction.

[0024] Among them, the step used in step S3 is the proportional-integral-differential (PID) control algorithm, that is, by collecting the relative position error between the transfer vehicle and the paver in real time, and combining the historical error accumulation value and the error change rate to dynamically adjust the output control amount, so as to realize the closed-loop regulation of the walking speed.

[0025] Among them, in step S5, the control system is linked with an audible and visual alarm device for early warning. The audible and visual alarm device can be realized through a buzzer and an LED warning light, and can be used for combined early warning of high-frequency sound alarms and light flashes respectively. At the same time, the safety module in step S5 includes distance early warning and anti-collision early warning to further improve the early warning effect and ensure that when the transfer vehicle and the paver are in the material transfer state, the probability of collision can be reduced.

[0026] See Figure 4 And Figure 5 The ultrasonic sensor used in the system includes a connecting frame 1, a base 2, a cylinder 3, a sensor housing 4, an ultrasonic transmitter 5, an ultrasonic receiver 6 and a heat dissipation device 7. The upper end of the connecting frame 1 is slidably provided with the base 2. The rear side of the base 2 is connected to the cylinder 3, and the cylinder 3 is installed in the middle of the rear side of the connecting frame 1. The upper end of the base 2 is installed with the sensor housing 4. The ultrasonic transmitter 5 and the ultrasonic receiver 6 are respectively arranged on the right side and the left side of the front end of the sensor housing 4. The bottom of the sensor housing 4 is butted with the heat dissipation device 7.

[0027] Specifically, when installing and using the ultrasonic sensor, the sensor housing 4 can be butted with the upper end of the base 2. When the docking activity is completed, the ultrasonic sensor as a whole can be operated, that is, the ultrasonic transmitter 5 and the ultrasonic receiver 6 are respectively arranged on the right side and the left side of the front end of the sensor housing 4, and the ultrasonic ranging activity can be realized to ensure the real-time monitoring of the distance between the transfer vehicle and the paver. And under the drive of the cylinder 3 installed on the rear side of the connecting frame 1, the base 2 can move along the upper end of the connecting frame 1 to realize the forward and backward movement of the ultrasonic sensor as a whole. In this way, before construction, by driving the cylinder 3, the position of the ultrasonic sensor can be flexibly adjusted, that is, the initial distance between the ultrasonic sensor and the paver can be calibrated through the cylinder 3, so that the distance between the transfer vehicle and the paver is kept within a preset range. When the distance between the transfer vehicle and the paver exceeds the preset range, the control system will trigger the alarm function and remind the driver to adjust the distance between the transfer vehicle and the paver in time through the audible and visual alarm device, so as to avoid material transfer interruption or equipment damage caused by too large or too small distance, and ensure the accuracy of the measurement data and the reliability of the system.

[0028] See Figures 6 to 9, the heat dissipation device 7 includes a connection frame 71, a housing 72, a support frame 73, a motor 74, a support disk 75, a first bevel gear 76, a second bevel gear 77, a first fan blade 78, a rotating shaft 79, a second fan blade 710 and a self-opening and closing component 711. The connection frame 71 is bolted to the lower end of the sensor housing 4, and the middle of the connection frame 71 is communicated with the lower end of the sensor housing 4. The bottom of the connection frame 71 is fixedly connected with the housing 72. The lower end inside the housing 72 is fixedly connected with the support frame 73. The motor 74 is installed inside the support frame 73. The top output end of the motor 74 is connected with the support disk 75, and the support disk 75 is installed on the upper end of the support frame 73. The middle of the upper end of the support disk 75 is provided with the first bevel gear 76, and the first bevel gear 76 is meshed and connected with the second bevel gears 77 on both the left and right sides. And the two second bevel gears 77 are respectively rotatably connected to the upper ends on both the left and right sides of the support disk 75. The first fan blade 78 is butted against the side of the two second bevel gears 77 away from the first bevel gear 76. The middle of the upper end of the first bevel gear 76 is butted against the rotating shaft 79, and the second fan blade 710 is installed outside the upper end of the rotating shaft 79. The top of the rotating shaft 79 is connected with the self-opening and closing component 711.

[0029] The self-opening and closing component 711 includes a third bevel gear 7111, a fourth bevel gear 7112, a first connecting rod 7113, a driving wheel 7114, a belt 7115, a driven wheel 7116, a second connecting rod 7117, a protection mechanism 7118 and an air outlet cylinder 7119. The third bevel gear 7111 is connected to the outside of the top of the rotating shaft 79, and the fourth bevel gears 7112 are meshed and connected to both the left and right sides of the rotating shaft 79. The middle of the two fourth bevel gears 7112 is horizontally butted with the first connecting rod 7113, and one end of the first connecting rod 7113 away from the fourth bevel gear 7112 is connected with the driving wheel 7114. The driving wheel 7114 is externally connected with the belt 7115 in a transmission manner, and the lower end of the belt 7115 is connected with the driven wheel 7116 in a transmission manner. The middle of the driven wheel 7116 is horizontally butted with the second connecting rod 7117, and one side of the second connecting rod 7117 away from the driven wheel 7116 is butted against the protection mechanism 7118. The protection mechanism 7118 is embedded inside the air outlet cylinder 7119, and the air outlet cylinder 7119 is fixedly connected to both the left and right sides of the housing 72.

[0030] The protection mechanism 7118 includes a rotating disk 71181, a mounting groove 71182, a blocking block 71183, a connecting shaft 71184, an air outlet groove 71185, a connecting rod 71186, a docking tube 71187 and a spring 71188. The rotating disk 71181 is connected to the second connecting rod 7117 at a side away from the driven wheel 7116, and the rotating disk 71181 is rotated to be embedded in the air outlet end of the air outlet tube 7119. Six mounting grooves 71182 are equidistantly provided on the outside of the rotating disk 71181, and the six mounting grooves 71182 are all slidably embedded with blocking blocks 7118. 3. A connecting shaft 71184 is inserted into one side of the blocking block 71183, and the connecting shaft 71184 is inserted backward into the air outlet slot 71185. The air outlet slot 71185 is correspondingly opened in the installation slot 71182. A connecting rod 71186 is fixedly connected to the other side of the blocking block 71183, and the connecting rod 71186 is movably inserted into the docking tube 71187 away from the blocking block 71183. A spring 71188 is installed in the docking tube 71187, and the spring 71188 is connected to the connecting rod 71186 away from the blocking block 71183.

[0031] Specifically, in order to ensure that the ultrasonic sensor is not prone to overheating and damage when performing ranging activities, the motor 74 installed in the receiving frame 73 can be operated to rotate the support plate 75 connected to the upper end during ranging activities. When the support plate 75 rotates, not only the first bevel gear 76 connected to the middle of the upper end can be driven to rotate synchronously, but also the second bevel gears 77 connected to the upper ends of the left and right sides can be driven to rotate. The rotating first bevel gear 76 can realize the meshing transmission of the second bevel gears 77 on both sides. In this way, the second bevel gears 77 on both sides will realize the synchronous rotation and revolution states. When the first bevel gear 76 rotates, the first blades 78 connected to the outer ends of the second bevel gears 77 on both sides respectively rotate at the same time to realize the use of wind heat conduction. Secondly, when the first bevel gear 76 rotates, the synchronous rotation of the vertically connected shaft 79 at the upper end can be realized. In this way, the second blade 710 installed at the upper end of the shaft 79 will rotate synchronously therewith to perform wind heat dissipation assistance activities, that is, to realize the rapid downward conduction of the heat generated inside the sensor housing 4. In this way, when the electronic components inside the sensor housing 4 are in operation, the heat generated can be discharged by wind assistance, the operating temperature can be reduced, and its service life can be guaranteed; Secondly, when the rotating shaft 79 drives the second fan blade 710 to rotate, the rotation of the third bevel gear 7111 docked at the top can be realized. In this way, the fourth bevel gears 7112 docked on the left and right sides of the third bevel gear 7111 can realize meshing rotation activities. With the rotation of the fourth bevel gears 7112 on both sides, the driving wheel 7114 connected to the fourth bevel gear 7112 through the first connecting rod 7113 can rotate in the same direction as the corresponding fourth bevel gear 7112. When the driving wheel 7114 rotates, it can cooperate with the externally connected belt 7115 to drive the synchronous rotation of the driven wheel 7116 docked at the bottom. Thus, the second connecting rod 7117 docked at the middle of the driven wheel 7116 can drive the rotation of the turntable 71181 docked on one side through the rotation driving effect. When the turntable 71181 is in a fast rotation state, the blocking blocks 71183 installed at the six installation slots 71182 opened inside the turntable 71181 will move outward under the centrifugal action of the fast rotation of the turntable 71181. When the blocking blocks 71183 move outward, the blocking of the corresponding air outlet slots 71185 opened inside the installation slots 71182 can be released, so that the heat assisted by the wind power of the first fan blade 78 and the second fan blade 710 can be efficiently discharged to the outside, reducing the problem of heat accumulation; Secondly, when the blocking blocks 71183 move outward under the centrifugal action, they can push the connecting rod 71186 docked on one side, so that the connecting rod 71186 is inserted into the docking cylinder 71187 and compresses the spring 71188 arranged inside the docking cylinder 71187. When the wind power assisted heat dissipation activity is completed, the spring 71188 in the docking cylinder 71187 and in a compressed state will automatically elastically reset. Thus, the connecting rod 71186 is automatically pushed back to its original position. With the reset of the connecting rod 71186, the blocking blocks 71183 docked on one side of the connecting rod 71186 will re-block the air outlet slots 71185 through the guidance of the installation slots 71182 to prevent the entry of external dust. At the same time, because the heat is dissipated by exhausting air from the inside to the outside during the heat dissipation activity, the entry of external dust can be blocked, realizing the auxiliary dust-proof protection cooperation.

[0032] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A paving construction material conveying system based on ultrasonic detection technology, characterized in that, It includes an ultrasonic sensor, a hydraulic system and a safety module; among them, The ultrasonic sensor is connected to the outer end of the transfer vehicle provided outside, and is used to measure the distance between the transfer vehicle and the paver in real time; The hydraulic system includes a hydraulic pump connected to an oil tank, which is used to provide continuous and stable oil pressure for the hydraulic circuit to ensure the power output of the actuator; an electro-hydraulic proportional valve connected to the oil outlet end of the hydraulic pump, which is used to accurately adjust the flow rate and direction of the hydraulic oil according to the controller signal; a hydraulic cylinder, which is an actuator of the hydraulic system, connected to the oil inlet and outlet ends of the electro-hydraulic proportional valve, which is used to convert hydraulic energy into mechanical energy, and by receiving the adjusted hydraulic oil, accurately control the traveling speed of the transfer vehicle; a pressure sensor connected to the internal pipelines of the hydraulic pump and the electro-hydraulic proportional valve and connected to an external controller, which is used to monitor the hydraulic circuit pressure in real time and feedback to the control system to judge the load state or abnormality; a flow sensor connected in series with the main oil pipe between the hydraulic pump and the electro-hydraulic proportional valve and connected to an external controller, which is used to detect the hydraulic oil flow rate and assist the controller to dynamically adjust the opening of the electro-hydraulic proportional valve to ensure that the action speed of the actuator is consistent with the preset value; The control system is used to receive the data of the ultrasonic sensor, calculate the required traveling speed of the transfer vehicle according to the preset control algorithm, and adjust the hydraulic system to achieve automatic speed control, and at the same time has a distance alarm function; The safety module is used for early warning of the distance between the transfer vehicle and the paver and anti-collision early warning to improve the transfer safety.

2. The paving construction material conveying system based on ultrasonic detection technology according to claim 1, wherein The ultrasonic sensor is communicatively connected to the control system by wired or wireless means.

3. The paving construction material conveying system based on ultrasonic detection technology according to claim 1, characterized in that, The control system includes a processor, a memory, an input / output interface and an audible and visual alarm device, among which, The processor, as the control core, is responsible for receiving sensor signals, executing preset algorithms and outputting control instructions; The memory is used to store preset parameters, real-time operation data and fault codes; The input / output interface is used to connect sensors and the hydraulic system to collect real-time data; The audible and visual alarm device is used to trigger an alarm to remind the driver to make corresponding adjustments in time.

4. A control method for a feeding system in paving construction based on ultrasonic detection technology, according to any one of claims 1 - 3, a feeding system in paving construction based on ultrasonic detection technology, characterized in that, It includes the following steps: S1. System Composition: Initialize the ultrasonic sensor, hydraulic system, control system and safety module; S2. Distance measurement: The ultrasonic sensor measures the distance between the transfer vehicle and the paver in real time and transmits the measurement data to the control system in real time; S3. Speed calculation and adjustment: The control system calculates the required traveling speed of the transfer vehicle by receiving the data of the ultrasonic sensor and combining with the preset algorithm, and adjusts the hydraulic system through the control system to realize the automatic adjustment of the traveling speed of the transfer vehicle to ensure that it remains relatively stationary with the paver; S4. Initial distance calibration: Before construction, adjust the initial distance between the ultrasonic sensor and the paver; S5. Alarm function: When the distance between the transfer vehicle and the paver exceeds the preset range, the control system and the safety module cooperate to trigger the alarm function to remind the staff to make adjustments in time.

5. The control method of a paving construction material conveying system based on ultrasonic detection technology according to claim 4, characterized in that, The step used in the step S3 is the proportional-integral-differential (PID) control algorithm, that is, by collecting the relative position error between the transporter and the paver in real time, combining the historical error accumulation value and the error change rate, the output control amount is dynamically adjusted to achieve the closed-loop regulation of the walking speed.

6. The control method of a paving construction material conveying system based on ultrasonic detection technology according to claim 4, characterized in that, In the step S5, the control system is linked with an early warning through an audible and visual alarm device, and the audible and visual alarm device can be realized by a buzzer and an LED warning light. At the same time, the safety module in the step S5 includes distance early warning and anti-collision early warning.

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