Prestressed steel cylinder concrete pipe machining device and method

Abstract

The invention relates to the technical field of spraying, and discloses a prestressed steel cylinder concrete pipe machining device and method.The prestressed steel cylinder concrete pipe machining device comprises a supporting table and a spraying head and further comprises a supporting rotating mechanism arranged above the supporting table and used for supporting a prestressed steel cylinder concrete pipe and driving the prestressed steel cylinder concrete pipe to rotate; the moving mechanism is arranged above the supporting table and used for driving the spray head to linearly move in the prestressed steel cylinder concrete pipe; the liquid supply mechanism is arranged on the moving mechanism and used for supplying spraying liquid to the spray head; and the spraying gun moving speed regulation and control system is used for regulating and controlling the moving speed of the spraying gun in real time. Through the synergistic effect of the supporting rotating mechanism, the moving mechanism, the liquid supply mechanism and the spraying gun moving speed regulation and control system, spraying parameters are collected in real time, the moving speed of the spraying gun is dynamically adjusted, and the problems that in a traditional technology, the coating uniformity is poor, and parameter adjustment lags behind are solved; the method has the advantages that the uniformity of the coating is improved, the spraying parameters are dynamically and cooperatively regulated, and the spraying quality and efficiency are optimized.

Description

Technical Field

[0001] The present invention belongs to the technical field of spraying, and in particular relates to a prestressed steel cylinder concrete pipe processing device and method. Background Art

[0002] Prestressed concrete cylinder pipe (PCCP) is a core component of water supply projects, and the quality of its inner wall anti-corrosion coating directly affects the service life of the pipe. Traditional spraying processes suffer from the following technical flaws: First, coating uniformity is difficult to ensure. Dynamic fluctuations in parameters such as spraying distance, pipe rotation speed, and solution viscosity result in uneven coating thickness distribution, affecting corrosion resistance. Second, parameter adjustment response lags, and manual operation cannot accurately adjust the spray gun movement speed in real time based on variables such as inner wall roughness and solution flow rate. Furthermore, existing equipment lacks a mechanism for collaboratively evaluating operating conditions and solution characteristics, making it difficult to achieve systematic optimization of spraying parameters. These issues severely restrict PCCP production efficiency and product quality, necessitating the development of a technical solution that can dynamically adjust spraying parameters. To address these issues, existing technologies urgently need to be improved. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a prestressed steel cylinder concrete pipe processing device and method, which has the advantages of improving coating uniformity, realizing dynamic coordinated control of spraying parameters, and optimizing spraying quality and efficiency.

[0004] The present invention is implemented as follows: a prestressed steel cylinder concrete pipe processing device includes a support platform and a nozzle, and also includes: a support rotation mechanism, which is arranged above the support platform, used to support the prestressed steel cylinder concrete pipe and drive the prestressed steel cylinder concrete pipe to rotate; a moving mechanism, which is arranged above the support platform, used to drive the nozzle to move linearly in the prestressed steel cylinder concrete pipe; a liquid supply mechanism, which is arranged on the moving mechanism, used to supply spraying liquid to the nozzle; a spray gun movement speed control system, which is used to control the movement speed of the spray gun in real time, including: a data acquisition module, which is used to obtain spraying distance, rotation speed of the prestressed steel cylinder concrete pipe, viscosity and flow rate information of the spraying solution, and roughness of the inner wall of the prestressed steel cylinder concrete pipe; a spray solution evaluation module. Module, constructs a spray solution evaluation model based on the viscosity and flow information of the spray solution to output the solution state coefficient; the spray working condition evaluation module, constructs a spray working condition evaluation model based on the spraying distance and the rotation speed of the prestressed steel cylinder concrete pipe to output the spray working condition coefficient; the solution-working condition synergy evaluation module, under the current roughness of the inner wall of the prestressed steel cylinder concrete pipe, constructs a solution-working condition synergy evaluation model based on the solution state coefficient and the spray working condition coefficient to output the solution-working condition synergy coefficient; the spray gun movement speed adjustment module, constructs a spray gun movement speed adjustment model based on the solution-working condition synergy coefficient, the current spray gun movement speed and the solution-working condition synergy threshold to adjust the current spray gun movement speed to the target spray gun movement speed.

[0005] A further technical solution is that the spray gun movement speed adjustment model is:

[0006] in, is the target spray gun moving speed, is the current moving speed of the spray gun, is the solution-condition synergy coefficient, is the solution-condition synergy threshold, Adjust the sensitivity factor for speed.

[0007] In a further technical solution, the solution-operating condition synergy evaluation model is:

[0008] in, is the solution-condition synergy coefficient, , The larger the value, the better the synergy. is the synergy ratio coefficient, is the solution state coefficient, is the spraying condition coefficient, is the reference roughness value, is the real-time inner wall roughness.

[0009] Further technical solution, the spraying condition evaluation model is:

[0010] in, is the spraying condition coefficient, , The larger the number, the easier it is to spray. is the real-time prestressed concrete cylinder pipe speed, is the reference speed reference value, is the real-time spraying distance, It is the reference spray distance benchmark value.

[0011] Further technical solution, the spray solution evaluation model is:

[0012] in, is the solution state coefficient, , The larger the value, the better the solution state and the easier it is to spray. For real-time spray solution flow, is the reference flow rate benchmark value, For real-time spray solution viscosity, It is the reference viscosity benchmark value.

[0013] A further technical solution is that the supporting rotation mechanism includes two groups of rolling support members arranged on the support platform, and the rolling support members include multiple support rollers rotatably connected on the support platform, the axes of the multiple support rollers coincide, and a rotating shaft is fixed inside the multiple support rollers, and a synchronous pulley is fixed on the rotating shaft; the two synchronous pulleys of the two groups of rolling support members are connected through a synchronous belt transmission, and a motor 1 is fixed on the support platform, and the rotating end of the motor 1 is connected to the rotating shaft of one group of rolling support members.

[0014] A further technical solution is that the moving mechanism includes two guide rails fixed on the support platform, the two guide rails are arranged in parallel, and a moving seat is slidably connected to the two guide rails. A hanging sleeve is fixed on the moving seat, and the nozzle is arranged at one end of the hanging sleeve. A screw rod is rotatably connected to the support platform, and the screw rod is arranged parallel to the two guide rails. The screw rod passes through the moving seat and is threadedly connected to the moving seat. Motor 2 is fixed on the support platform, and the rotating end of motor 2 is connected to the screw rod.

[0015] A further technical solution is that a fixing seat is fixed at one end of the suspension sleeve, a guide groove is provided on the inner wall of the fixing seat, a telescopic block is slidably connected in the guide groove, the nozzle is fixed at the end of the telescopic block, a fastening bolt is threadedly connected on the side wall of the fixing seat, and the end of the fastening bolt is against the side wall of the telescopic block.

[0016] According to a further technical solution, the liquid supply mechanism includes a main pipe arranged in the suspension sleeve, one end of the main pipe is connected to the nozzle, and the other end of the main pipe is connected to a booster pump, which is connected to the spray raw material box through a pipeline.

[0017] A further technical solution is a method for processing a prestressed steel cylinder concrete pipe, based on the above-mentioned prestressed steel cylinder concrete pipe processing device, characterized by comprising: Obtain information on the spraying distance, the rotation speed of the prestressed steel cylinder concrete pipe, the viscosity and flow rate of the spraying solution, and the roughness of the inner wall of the prestressed steel cylinder concrete pipe; According to the viscosity and flow information of the spray solution, a spray solution evaluation model is constructed to output the solution state coefficient; According to the spraying distance and the rotation speed of the prestressed steel cylinder concrete pipe, a spraying condition evaluation model is constructed to output the spraying condition coefficient; Under the current roughness of the inner wall of the prestressed steel cylinder concrete pipe, a solution-operating condition synergy evaluation model is constructed based on the solution state coefficient and the spraying operating condition coefficient to output the solution-operating condition synergy coefficient; A spray gun movement speed adjustment model is constructed based on the solution-working condition synergy coefficient, the current spray gun movement speed and the solution-working condition synergy threshold to adjust the current spray gun movement speed to the target spray gun movement speed.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a prestressed steel cylinder concrete pipe processing device and method, which collects spraying parameters in real time and dynamically adjusts the spray gun movement speed through the coordinated action of a supporting rotation mechanism, a moving mechanism, a liquid supply mechanism and a spray gun movement speed control system, thereby solving the problems of poor coating uniformity and delayed parameter adjustment in traditional processes. It has the advantages of improving coating uniformity, realizing dynamic coordinated control of spraying parameters, and optimizing spraying quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a prestressed steel cylinder concrete pipe processing device provided by the present invention in a working state; Figure 2 A schematic structural diagram of a prestressed steel cylinder concrete pipe processing device provided by the present invention; Figure 3 The present invention provides Figure 1 Schematic diagram of the structure of the middle support rotation mechanism; Figure 4 The present invention provides Figure 1 Schematic diagram of the structure of the moving mechanism; Figure 5 The present invention provides Figure 4 Schematic diagram of the enlarged structure of A in the figure.

[0020] In the attached figure: 1. Support platform; 2. Support roller; 3. Rotating shaft; 4. Motor 1; 5. Synchronous pulley; 6. Synchronous belt; 7. Suspension sleeve; 9. Main pipeline; 10. Guide rail; 11. Moving seat; 12. Motor 2; 13. Screw; 14. Fixed seat; 15. Guide groove; 16. Telescopic block; 17. Nozzle; 18. Fastening bolts. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] In existing technologies, prestressed concrete cylinder pipes (CSCs) serve as core components of water supply projects, and the quality of their inner wall anti-corrosion coatings directly impacts the life of the pipes. Traditional spraying processes employ fixed parameter control, making them difficult to adapt to dynamically changing operating conditions. For example, factors such as fluctuations in pipe rotation speed, changes in spray solution viscosity, and differences in inner wall roughness during the spraying process can lead to uneven coating thickness. Furthermore, manual adjustment of the spray gun's movement speed results in a response lag, making it impossible to match real-time operating parameters. Furthermore, there is a lack of a coordinated evaluation mechanism for operating conditions and solution state, resulting in unstable coating quality.

[0023] To address the above issues, the inventors discovered that the poor coating uniformity of traditional processes stems from the isolation of parameter adjustment, such as focusing only on a single variable while ignoring the influence of multiple factors. By analyzing the interaction between parameters such as spray distance, tube rotation speed, solution viscosity, and roughness, they proposed establishing a multi-dimensional dynamic evaluation model. Furthermore, the inventors realized the need to combine physical actuators with intelligent control systems to achieve closed-loop control through real-time data acquisition, state evaluation, and synergy correction, thereby forming a dynamic adjustment mechanism for the spray gun speed based on the solution-working condition synergy coefficient.

[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] like Figure 1-Figure 5 As shown, a prestressed steel cylinder concrete pipe processing device provided by one embodiment of the present invention includes a support platform 1 and a nozzle 17, and also includes: The supporting rotation mechanism is arranged above the supporting platform 1 and is used to support the prestressed steel cylinder concrete pipe and drive the prestressed steel cylinder concrete pipe to rotate; The moving mechanism is arranged above the support platform 1 and is used to drive the nozzle 17 to move linearly in the prestressed steel cylinder concrete pipe; A liquid supply mechanism, provided on the moving mechanism, for supplying spraying liquid to the spray head 17; The spray gun movement speed control system is used to control the spray gun movement speed in real time, including: A data acquisition module is used to obtain information on the spraying distance, the rotation speed of the prestressed steel cylinder concrete pipe, the viscosity and flow rate of the spraying solution, and the roughness of the inner wall of the prestressed steel cylinder concrete pipe; The spray solution evaluation module builds a spray solution evaluation model based on the viscosity and flow information of the spray solution and outputs the solution state coefficient; The spraying condition evaluation module builds a spraying condition evaluation model based on the spraying distance and the rotation speed of the prestressed steel cylinder concrete pipe and outputs the spraying condition coefficient; The solution-operating condition synergy evaluation module constructs a solution-operating condition synergy evaluation model based on the solution state coefficient and the spraying operating condition coefficient under the current roughness of the inner wall of the prestressed steel cylinder concrete pipe and outputs the solution-operating condition synergy coefficient; The spray gun movement speed adjustment module builds a spray gun movement speed adjustment model based on the solution-working condition synergy coefficient, the current spray gun movement speed and the solution-working condition synergy threshold to adjust the current spray gun movement speed to the target spray gun movement speed.

[0026] Specifically, the supporting rotating mechanism drives the tube body to rotate at a constant speed through the synchronous rotation of the support rollers, ensuring uniform circumferential coverage of the tube inner wall by the spray liquid. The moving mechanism drives the nozzle axially along the tube body via a screw drive, achieving continuous spraying. The liquid supply mechanism maintains stable spray liquid pressure through a booster pump to prevent flow fluctuations from affecting coating quality. The spray gun movement speed control system collects real-time data on spray distance, tube rotation speed, solution viscosity, and flow rate. The spray solution evaluation model calculates the solution state coefficient, reflecting the degree to which the solution flow characteristics affect the spraying effect. The spray condition evaluation model also calculates the spray condition coefficient, reflecting the spraying difficulty at the current rotation speed and spray distance combination. Furthermore, combined with real-time inner wall roughness data, the solution-condition synergy evaluation model calculates the synergy coefficient to quantify the degree of match between the current parameter combination and the ideal state. Finally, based on the ratio of the synergy coefficient to a preset threshold, the spray gun movement speed is dynamically adjusted to ensure that the spray parameters are always optimally matched.

[0027] Compared with the existing technology, traditional spraying equipment uses a fixed spray gun movement speed and cannot adjust parameters according to real-time working conditions, resulting in fluctuations in coating thickness. This application establishes a multi-dimensional evaluation model, incorporates solution state, spraying conditions and inner wall roughness parameters into a unified calculation framework, and forms a dynamic feedback adjustment mechanism. For example, when the solution viscosity is detected to be increased, the system automatically increases the solution state coefficient and corrects the spray gun movement speed through a synergistic evaluation model to avoid the problem of excessive coating thickness caused by decreased solution fluidity. In addition, the existing technology lacks the ability to correct roughness parameters in real time, and this application introduces roughness ratio calculation to enable the spray gun speed to adapt to the inner wall of the pipe body with different surface conditions.

[0028] Through the above technical solution, this application effectively solves the problems of poor coating uniformity, parameter adjustment lag and lack of coordination under dynamic working conditions. Through the synergistic effect of the supporting rotating mechanism and the moving mechanism, the circumferential uniformity and axial continuity of the spray coverage are ensured; through the multi-parameter fusion evaluation of the spray gun movement speed control system, the dynamic matching of the spray gun movement speed with the solution state, spraying conditions and roughness is achieved, thereby improving the consistency of coating thickness. This solution overcomes the defects of isolated parameter adjustment in traditional processes, enhances the adaptability of the spray process to complex working conditions, and significantly improves coating quality and production efficiency.

[0029] Preferably, the spray gun movement speed adjustment model is:

[0030] in, is the target spray gun moving speed, is the current moving speed of the spray gun, is the solution-condition synergy coefficient, is the solution-condition synergy threshold, Adjust the sensitivity factor for speed.

[0031] Among them, the target spray gun movement speed refers to the spray gun movement speed dynamically calculated according to the real-time working conditions. It can be achieved by calculating the model output value in real time through the embedded controller, and is used to directly drive the motor to adjust the spray gun displacement. The current spray gun movement speed refers to the actual movement speed of the spray gun before adjustment. It can be achieved by real-time acquisition through an encoder or speed sensor, and serves as the reference input for speed regulation. The solution-working condition synergy coefficient refers to a quantitative indicator that reflects the degree of matching between the spray solution state and the working conditions. It can be calculated through multi-sensor data fusion and used to evaluate the stability of the current spraying process. The solution-working condition synergy threshold refers to a preset synergy critical value, which can be determined through historical process data or experimental calibration, and is used to determine whether to trigger speed regulation. The speed regulation sensitivity coefficient refers to an exponential parameter that controls the speed change amplitude. It can be set through the dynamic response characteristics of the equipment or process requirements. For example, the value range can be 0.5 to 1.5, which is used to balance the adjustment speed and system stability.

[0032] Specifically, the spray gun movement speed adjustment model achieves dynamic optimization through nonlinear operations. When the solution-working condition synergy coefficient exceeds the threshold, the ratio is used as a regulating factor to amplify the adjustment range of the current speed; when the coefficient is lower than the threshold, the speed is reduced. The exponential form of the sensitivity coefficient can suppress sudden changes in speed. For example, when the ratio of the synergy coefficient to the threshold deviates from 1, the exponential operation can accelerate or slow down the speed change trend. The model integrates multi-dimensional parameters into a single synergy coefficient, and drives the actuator by calculating the target speed in real time to solve the lag problem of traditional manual adjustment. For example, when the viscosity of the spray solution suddenly increases, causing the synergy to deteriorate, the model automatically reduces the movement speed of the spray gun to avoid excessive coating thickness.

[0033] Compared with existing technologies, traditional methods use linear proportional regulation or fixed parameter control, which cannot adapt to the coupled changes of multiple variables such as solution viscosity and roughness during the spraying process. In existing technologies, the spray gun speed is only proportionally adjusted according to a single parameter (such as rotational speed), resulting in fluctuations in coating thickness. This solution achieves nonlinear regulation by combining the dynamic ratio of the synergy coefficient and the threshold with exponential calculations, significantly improving the response speed under critical conditions. For example, in existing technologies, manual intervention is required when the spray distance changes, while this solution uses a model to autonomously calculate the target speed, eliminating adjustment lag.

[0034] Through the above technical solution, this application solves the problem of uneven coating thickness caused by the inability of the spray gun movement speed to match the synergistic changes in real time. By dynamically calculating the target speed, the spray liquid is ensured to evenly cover the inner wall of the tube. For example, when the tube speed fluctuates or the solution flow rate changes, the model automatically adjusts the spray gun movement speed to maintain the consistency of the coating thickness. At the same time, the exponential regulation model avoids speed step changes, prevents equipment vibration or spraying interruptions, and improves process stability.

[0035] Preferably, the solution-operating condition synergy evaluation model is:

[0036] in, is the solution-condition synergy coefficient, , The larger the value, the better the synergy. The synergistic proportional coefficient refers to the weight parameter for adjusting the sensitivity of the model. Specifically, the empirical value of different pipe types can be calibrated through process tests to amplify or reduce the product effect of the solution state and the spraying condition. is the solution state coefficient, is the spraying condition coefficient, For reference to the roughness benchmark value, the preset inner wall roughness standard value can be the factory acceptance standard value of the same specification pipe, which is used to compare with the real-time roughness. For real-time inner wall roughness, the current surface roughness value of the inner wall of the pipe body is measured by a laser sensor or a contact probe, which can be periodically collected using an online detection device.

[0037] The solution-condition synergy coefficient is a parameter used to quantify the degree of match between the spraying condition and the solution state. Specifically, it can be output using a normalized fractional model, with a value range of [0,1). Larger values ​​indicate better synergy. The synergy proportionality coefficient is a weighting parameter used to adjust the model's sensitivity. Specifically, empirical values ​​for different pipe types can be calibrated through process testing to amplify or minimize the multiplicative effect of the solution state and the spraying condition. The solution state coefficient is a parameter that reflects the flow characteristics of the spray solution. Specifically, it can be calculated from the ratio of viscosity to flow rate. Larger values ​​indicate more suitable solution fluidity for spraying. The spraying condition coefficient is a parameter that characterizes the rationality of the spray motion parameters. Specifically, it can be calculated from the ratio of pipe rotation speed to spray distance. Larger values ​​indicate more favorable motion parameters for coating uniformity. The reference roughness baseline value is a preset standard value for inner wall roughness. Specifically, the factory acceptance standard value for pipes of the same specification can be used for comparison with the real-time roughness. The real-time inner wall roughness refers to the current surface roughness value of the inner wall of the pipe body measured by a laser sensor or a contact probe, which can be periodically collected using an online detection device.

[0038] Specifically, the model multiplies the solution state coefficient by the spraying condition coefficient to establish a coupled relationship between solution fluidity and motion parameters. It also introduces a dynamic ratio of real-time roughness to a baseline value to quantify the impact of the inner wall surface state on spray quality. When the real-time roughness is higher than the baseline value, the ratio decreases, directly weakening the synergy coefficient, reflecting the inhibitory effect of increased roughness on spray adhesion. The fractional structure limits the synergy coefficient to the interval [0,1) to avoid parameter overshoot and ensure that the synergy coefficient asymptotically approaches 1 when the solution state, spraying conditions, and roughness approach ideal values.

[0039] Compared with existing technologies, traditional methods rely solely on manual experience to adjust spray parameters, failing to quantitatively assess the degree of match between solution state and operating conditions, resulting in significant deviations in spray thickness as roughness fluctuates. This solution, by establishing a multi-parameter coupled, synergistic evaluation model, integrates inner wall roughness, solution viscosity, flow rate, pipe rotation speed, and spray distance into a single evaluation metric, enabling dynamic prediction of spray quality and parameter optimization.

[0040] Through this technical solution, the present application can dynamically adjust the spray gun's movement speed based on the real-time inner wall roughness, avoiding uneven coating thickness or material waste caused by sudden changes in surface roughness. Quantitatively evaluating the synergy between solution state and spraying conditions solves the problem of parameter adjustment lagging behind operating conditions in traditional processes, ensuring that spray parameters always match the current inner wall state and solution characteristics.

[0041] Preferably, the spraying condition evaluation model is:

[0042] in, The spraying condition coefficient is a quantitative indicator of the influence of the comprehensive speed and spraying distance parameters on the spraying operation. Its value is obtained by normalizing the product of the speed ratio and the distance ratio. It is used to characterize the difficulty of the spraying operation under the current working conditions. , The larger the number, the easier it is to spray. The real-time rotation speed of prestressed steel cylinder concrete pipe can be measured by encoder or Hall sensor to characterize the influence of the linear velocity of the pipe surface on the coating uniformity during the spraying process. It is the reference speed reference value and the standard value of the pipe body rotation speed. It can be set according to the historical process data or coating thickness requirements and is used to form a comparison relationship with the real-time speed. The real-time spraying distance is the vertical distance between the nozzle and the inner wall of the pipe. It can be collected in real time by a laser rangefinder or an ultrasonic sensor to reflect the degree of kinetic energy attenuation of the atomized particles of the spray liquid when they reach the pipe wall. As a reference to the spray distance benchmark value, the preset optimal distance range for spraying operation can be determined through the experiment of matching the spray liquid atomization angle and the injection pressure, and is used to evaluate the degree to which the current spray distance deviates from the ideal state.

[0043] The real-time prestressed steel cylinder concrete pipe rotational speed refers to the angular velocity of the pipe around its axis. This can be measured using an encoder or Hall effect sensor and is used to characterize the impact of the pipe surface linear velocity on coating uniformity during spraying. The reference speed baseline value refers to a preset standard value for the pipe rotational speed. This value can be set based on historical process data or coating thickness requirements and is used to compare with the real-time speed. The real-time spray distance refers to the vertical distance between the nozzle and the inner wall of the pipe. This value can be measured in real time using a laser rangefinder or ultrasonic sensor and reflects the degree of kinetic energy attenuation of the spray liquid atomized particles upon reaching the pipe wall. The reference spray distance baseline value refers to the preset optimal spraying distance range. This value can be determined through experiments to match the spray liquid atomization angle with the injection pressure. This value is used to assess the degree to which the current spray distance deviates from the ideal state. The spray operating condition coefficient is a quantitative indicator that combines the impact of the speed and spray distance parameters on the spraying operation. Its value is obtained by normalizing the product of the speed ratio and the distance ratio and is used to characterize the difficulty of the spraying operation under the current operating conditions.

[0044] Specifically, the spraying condition evaluation model generates dynamic parameters that characterize the spraying condition by multiplying the ratio of the real-time speed to the reference speed, and the ratio of the reference spraying distance to the real-time spraying distance. When the actual speed is higher than the reference speed, the numerator increases, indicating that the spray coverage area per unit time increases; when the actual spraying distance is less than the reference distance, the numerator increases further, indicating that the kinetic energy loss of the spray liquid when it reaches the pipe wall decreases. The "1+product term" structure in the denominator constrains the calculation result to the interval [0,1) to avoid numerical overflow due to drastic parameter fluctuations. The spraying condition coefficient output by the model directly reflects the synergistic state of the speed and spraying distance. When the coefficient approaches 1, it indicates that the spray liquid can fully cover the pipe wall under the current working conditions; when the coefficient approaches 0, it triggers the subsequent synergy evaluation module to adjust the parameters.

[0045] Compared to existing technologies, traditional processes use a fixed combination of speed and spray distance parameters, which cannot adapt to changes in operating conditions caused by pipe dimensional tolerances or equipment vibration. Manual adjustment methods in existing technologies have a response lag, making it difficult to accurately match the dynamic relationship between speed and spray distance in real time. This solution establishes a quantitative evaluation model that compares real-time speed and spray distance data with baseline values, automatically identifying the degree of deviation from the ideal state and providing precise input parameters for subsequent movement speed control.

[0046] Through the above technical solution, this application solves the problem of uneven coating thickness caused by the mismatch between rotation speed and spray distance parameters in traditional spraying processes. By real-time monitoring of the tube rotation speed and nozzle position, and dynamically evaluating the spraying working conditions, the movement speed of the spray gun can be automatically adjusted according to the changes in working conditions, ensuring that the spray liquid forms a uniform coating layer on the inner wall of the tube body, avoiding coating defects caused by too fast rotation speed or too long spray distance, and preventing coating accumulation caused by too slow rotation speed or too short spray distance.

[0047] Preferably, the spray solution evaluation model is:

[0048] in, is the solution state coefficient, , The larger the value, the better the solution state and the easier it is to spray. The real-time flow rate of the spray solution can be monitored by an electromagnetic flow meter or a turbine flow meter to characterize the supply rate of the spray liquid. The reference flow rate can be determined through experimental calibration or historical data statistics, and is used as a reference for flow regulation. In order to measure the viscosity of the spray solution in real time, a rotational viscometer or a vibration viscosity sensor can be used for online measurement to reflect the flow properties of the spray liquid. It is a reference viscosity benchmark value, which can be obtained through experimental optimization according to the coating thickness uniformity requirements and is used to evaluate the degree of deviation from the real-time viscosity.

[0049] Specifically, the model constructs a numerator to quantify the synergistic change trend of flow and viscosity by multiplying the ratio of the real-time flow rate to the baseline flow rate and the reciprocal ratio of the real-time viscosity to the baseline viscosity. When the actual flow rate is higher than the baseline value or the actual viscosity is lower than the baseline value, the value of the numerator increases, indicating that the fluidity of the solution has improved; conversely, the value of the numerator decreases, indicating that the fluidity has decreased. The denominator adopts a "1+numerator" structure design, which constrains the numerical range of the solution state coefficient S to the interval [0,1) to avoid overflow of the calculation results due to excessive flow or viscosity. The S value output by the model can directly reflect the real-time state of the spray solution. When the flow rate increases or the viscosity decreases, the S value approaches 1, indicating that the solution is more likely to form a uniform coating; when the flow rate is insufficient or the viscosity is too high, the S value approaches 0, triggering the subsequent speed adjustment mechanism.

[0050] Compared with existing technologies, traditional processes typically use fixed flow thresholds or manual experience to determine solution state, making it impossible to quantitatively evaluate the dynamic coupling effect of flow and viscosity. For example, in existing technologies, when the flow rate meets the standard but the viscosity is too high, coating buildup may still occur due to poor flow. However, this solution automatically reduces the S value through the inverse viscosity term in the model, providing timely feedback on abnormal solution state. Furthermore, existing technologies lack mathematical modeling of the interactive influence of flow and viscosity, while this solution reveals the synergistic effect of the two on the spraying effect through a multiplication relationship.

[0051] Through the above technical solution, this application can capture the fluctuations of flow rate and viscosity during the spraying process in real time, and output dynamic evaluation indicators through normalized calculation to provide a quantitative basis for spray gun speed adjustment. For example, when it is detected that the flow rate has dropped but the viscosity has not exceeded the standard, the model automatically calculates the S value to decrease, triggering the spray gun to slow down to avoid the coating being too thin; when the viscosity increases abnormally, even if the flow rate is normal, the model will still output a lower S value, indicating that the spray parameters need to be adjusted. This solves the problem of uneven coating thickness caused by single parameter monitoring in traditional processes, and at the same time establishes a dynamic evaluation mechanism for the solution state to improve the stability of the spraying quality.

[0052] like Figure 1 、 Figure 2 and Figure 3 As shown, as a preferred embodiment of the present invention, the supporting rotation mechanism includes two groups of rolling support members arranged on the support platform 1, and the rolling support members include multiple support rollers 2 rotatably connected to the support platform 1, the axes of the multiple support rollers 2 coincide, and a rotating shaft 3 is fixed in the multiple support rollers 2, and a synchronous pulley 5 is fixed on the rotating shaft 3; the two synchronous pulleys 5 of the two groups of rolling support members are connected by a synchronous belt 6, and a motor 4 is fixed on the support platform 1, and the rotating end of the motor 4 is connected to the rotating shaft 3 of one group of rolling support members.

[0053] In an embodiment of the present invention, the prestressed steel cylinder concrete pipe is hoisted onto two groups of rolling support members by a hoisting device, and the two groups of support rollers 2 support the prestressed steel cylinder concrete pipe. The motor 1 4 drives one of the rotating shafts 3 to rotate, and one of the rotating shafts 3 drives the other rotating shaft 3 to rotate through two synchronous pulleys 5 and a synchronous belt 6. The two rotating shafts 3 drive the two groups of multiple support rollers 2 to rotate synchronously, thereby causing the support rollers 2 to drive the prestressed steel cylinder concrete pipe to rotate.

[0054] like Figure 2 and Figure 4As shown, as a preferred embodiment of the present invention, the moving mechanism includes two guide rails 10 fixed on the support platform 1, the two guide rails 10 are arranged in parallel, and a moving seat 11 is slidably connected to the two guide rails 10, and a hanging sleeve 7 is fixed on the moving seat 11. The nozzle 17 is arranged at one end of the hanging sleeve 7, and a screw rod 13 is rotatably connected to the support platform 1. The screw rod 13 is arranged parallel to the two guide rails 10, and the screw rod 13 passes through the moving seat 11 and is threadedly connected to the moving seat 11. A motor 2 12 is fixed on the support platform 1, and the rotating end of the motor 2 12 is connected to the screw rod 13.

[0055] In an embodiment of the present invention, motor 2 12 drives the screw 13 to rotate. Under the guidance of the two guide rails 10, the rotating screw 13 drives the movable seat 11 to move through threaded transmission, the movable seat 11 drives the suspension sleeve 7 to move, and the suspension sleeve 7 drives the nozzle 17 to move, thereby allowing the nozzle 17 to move linearly in the prestressed steel cylinder concrete pipe.

[0056] like Figure 4 and Figure 5 As shown, as a preferred embodiment of the present invention, a fixing seat 14 is fixed to one end of the suspension sleeve 7, a guide groove 15 is provided on the inner wall of the fixing seat 14, a telescopic block 16 is slidably connected in the guide groove 15, the nozzle 17 is fixed to the end of the telescopic block 16, and a fastening bolt 18 is threadedly connected to the side wall of the fixing seat 14, and the end of the fastening bolt 18 is against the side wall of the telescopic block 16.

[0057] In an embodiment of the present invention, when spraying prestressed steel cylinder concrete pipes of different diameters, or changing the spraying parameters of the inner wall of the prestressed steel cylinder concrete pipe, it is necessary to adjust the height of the nozzle 17. At this time, the fastening bolt 18 is screwed and loosened so that the end of the fastening bolt 18 does not contact the telescopic block 16. Under the guidance of the guide groove 15, the telescopic block 16 is moved up and down. The telescopic block 16 drives the nozzle 17 to move up and down. After adjusting the nozzle 17 to the appropriate height, the fastening bolt 18 is reversed so that the fastening bolt 18 is against the side wall of the telescopic block 16 to limit the movement of the telescopic block 16.

[0058] like Figure 2 、 Figure 4 and Figure 5 As shown, as a preferred embodiment of the present invention, the liquid supply mechanism includes a main pipe 9 arranged in the suspension sleeve 7, one end of the main pipe 9 is connected to the nozzle 17, and the other end of the main pipe 9 is connected to a booster pump, and the booster pump is connected to the spray raw material box through a pipeline.

[0059] In an embodiment of the present invention, the main pipeline 9 can be a hose, and the main pipeline 9 and the nozzle 17 can also be connected by a hose. The booster pump easily pumps the spray material box into the main pipeline 9 with booster pressure, and the liquid is then sprayed out from the nozzle 17.

[0060] A method for processing a prestressed steel cylinder concrete pipe, based on the above-mentioned prestressed steel cylinder concrete pipe processing device, comprises: Obtain information on the spraying distance, the rotation speed of the prestressed steel cylinder concrete pipe, the viscosity and flow rate of the spraying solution, and the roughness of the inner wall of the prestressed steel cylinder concrete pipe; According to the viscosity and flow information of the spray solution, a spray solution evaluation model is constructed to output the solution state coefficient; According to the spraying distance and the rotation speed of the prestressed steel cylinder concrete pipe, a spraying condition evaluation model is constructed to output the spraying condition coefficient; Under the current roughness of the inner wall of the prestressed steel cylinder concrete pipe, a solution-operating condition synergy evaluation model is constructed based on the solution state coefficient and the spraying operating condition coefficient to output the solution-operating condition synergy coefficient; A spray gun movement speed adjustment model is constructed based on the solution-working condition synergy coefficient, the current spray gun movement speed and the solution-working condition synergy threshold to adjust the current spray gun movement speed to the target spray gun movement speed.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A prestressed steel cylinder concrete pipe processing device, comprising a support platform and a nozzle, characterized in that: Also includes: The supporting rotation mechanism is arranged above the supporting platform and is used to support the prestressed steel cylinder concrete pipe and drive the prestressed steel cylinder concrete pipe to rotate; The moving mechanism is arranged above the support platform and is used to drive the sprinkler head to move linearly in the prestressed steel cylinder concrete pipe; A liquid supply mechanism, provided on the moving mechanism, for supplying spraying liquid to the spray head; The spray gun movement speed control system is used to control the spray gun movement speed in real time, including: A data acquisition module is used to obtain information on the spraying distance, the rotation speed of the prestressed steel cylinder concrete pipe, the viscosity and flow rate of the spraying solution, and the roughness of the inner wall of the prestressed steel cylinder concrete pipe; The spray solution evaluation module builds a spray solution evaluation model based on the viscosity and flow information of the spray solution and outputs the solution state coefficient; The spraying condition evaluation module builds a spraying condition evaluation model based on the spraying distance and the rotation speed of the prestressed steel cylinder concrete pipe and outputs the spraying condition coefficient; The solution-operating condition synergy evaluation module constructs a solution-operating condition synergy evaluation model based on the solution state coefficient and the spraying operating condition coefficient under the current roughness of the inner wall of the prestressed steel cylinder concrete pipe and outputs the solution-operating condition synergy coefficient; The spray gun movement speed adjustment module builds a spray gun movement speed adjustment model based on the solution-working condition synergy coefficient, the current spray gun movement speed and the solution-working condition synergy threshold to adjust the current spray gun movement speed to the target spray gun movement speed.

2. The prestressed concrete cylinder pipe processing device according to claim 1, characterized in that: The spray gun movement speed adjustment model is: in, is the target spray gun moving speed, is the current moving speed of the spray gun, is the solution-condition synergy coefficient, is the solution-condition synergy threshold, Adjust the sensitivity factor for speed.

3. The prestressed concrete cylinder pipe processing device according to claim 2, characterized in that: The solution-operating condition synergy evaluation model is: in, is the solution-condition synergy coefficient, , The larger the value, the better the synergy. is the synergy ratio coefficient, is the solution state coefficient, is the spraying condition coefficient, is the reference roughness value, is the real-time inner wall roughness.

4. The prestressed steel cylinder concrete pipe processing device according to claim 3, characterized in that: The spraying condition evaluation model is: in, is the spraying condition coefficient, , The larger the number, the easier it is to spray. is the real-time prestressed concrete cylinder pipe speed, is the reference speed reference value, is the real-time spraying distance, It is the reference spray distance benchmark value.

5. The prestressed steel cylinder concrete pipe processing device according to claim 3, characterized in that: The spray solution evaluation model is: in, is the solution state coefficient, , The larger the value, the better the solution state and the easier it is to spray. For real-time spray solution flow, is the reference flow rate benchmark value, For real-time spray solution viscosity, It is the reference viscosity benchmark value.

6. The prestressed steel cylinder concrete pipe processing device according to claim 1, characterized in that: The support rotation mechanism includes two sets of rolling support members arranged on the support platform, and the rolling support members include a plurality of support rollers rotatably connected to the support platform, the axes of the plurality of support rollers coincide, a rotating shaft is fixed inside the plurality of support rollers, and a synchronous pulley is fixed on the rotating shaft; The two synchronous pulleys of the two sets of upper rolling support members are connected through synchronous belt transmission. A motor 1 is fixed on the support platform, and the rotating end of the motor 1 is connected to the rotating shaft of one set of rolling support members.

7. The prestressed concrete cylinder pipe processing device according to claim 1, characterized in that: The moving mechanism includes two guide rails fixed on the support platform, the two guide rails are arranged in parallel, and a moving seat is slidably connected to the two guide rails. A hanging sleeve is fixed on the moving seat, and the nozzle is arranged at one end of the hanging sleeve. A screw rod is rotatably connected to the support platform, and the screw rod is arranged parallel to the two guide rails. The screw rod passes through the moving seat and is threadedly connected to the moving seat. Motor 2 is fixed on the support platform, and the rotating end of motor 2 is connected to the screw rod.

8. The prestressed steel cylinder concrete pipe processing device according to claim 7, characterized in that: A fixing seat is fixed to one end of the suspension sleeve, a guide groove is provided on the inner wall of the fixing seat, a telescopic block is slidably connected in the guide groove, the nozzle is fixed to the end of the telescopic block, a fastening bolt is threadedly connected to the side wall of the fixing seat, and the end of the fastening bolt is against the side wall of the telescopic block.

9. The prestressed steel cylinder concrete pipe processing device according to claim 7, characterized in that: The liquid supply mechanism includes a main pipeline arranged in the suspension sleeve, one end of the main pipeline is connected to the nozzle, and the other end of the main pipeline is connected to a booster pump, and the booster pump is connected to the spraying raw material box through a pipeline.

10. A method for processing a prestressed concrete cylinder pipe, based on the prestressed concrete cylinder pipe processing device according to claim 1, characterized in that: include: Obtain information on the spraying distance, the rotation speed of the prestressed steel cylinder concrete pipe, the viscosity and flow rate of the spraying solution, and the roughness of the inner wall of the prestressed steel cylinder concrete pipe; According to the viscosity and flow information of the spray solution, a spray solution evaluation model is constructed to output the solution state coefficient; According to the spraying distance and the rotation speed of the prestressed steel cylinder concrete pipe, a spraying condition evaluation model is constructed to output the spraying condition coefficient; Under the current roughness of the inner wall of the prestressed steel cylinder concrete pipe, a solution-operating condition synergy evaluation model is constructed based on the solution state coefficient and the spraying operating condition coefficient to output the solution-operating condition synergy coefficient; A spray gun movement speed adjustment model is constructed based on the solution-working condition synergy coefficient, the current spray gun movement speed and the solution-working condition synergy threshold to adjust the current spray gun movement speed to the target spray gun movement speed.

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