A multi-column lifting platform front feedback leveling system based on magnetic suspension technology

Abstract

The application discloses a kind of front feedback leveling systems of multi-column lifting platform based on magnetic suspension technology, and the system includes platform main body, multiple pillars, lifting mechanism, magnetic suspension technology measurement system, intelligent control module and drive module.The magnetic suspension technology measurement system is by being arranged on platform and electromagnetic induction component of pillar, non-contact real-time monitoring platform operating speed fluctuation and inclination angle change, and output monitoring signal.Intelligent control module built-in front feedback control algorithm, based on the comparison of monitoring signal and preset safety threshold, predict platform inclination trend and generate control signal.Drive module then according to the signal, by variable frequency motor and gear rack transmission mechanism stepless adjustment lifting mechanism speed, realize in lifting process without stopping real-time, advance leveling.The application overcomes the hysteresis of traditional back feedback system by front feedback mechanism, with fast response, high precision, good safety and high construction efficiency Significant advantages.

Description

Technical Field

[0001] This invention relates to the field of high-rise building construction technology, specifically to a front feedback leveling system for a multi-column lifting platform based on magnetic levitation technology. Background Technology

[0002] As a common type of construction machinery in building construction, lifting platforms often need to surround the entire building structure. Figure 1 As shown, this type of lifting platform requires multiple main structures to work synchronously to ensure the platform does not tilt, preventing personal injury and construction risks. Currently, the leveling systems of multi-column lifting platforms are often mechanical or based on electrical signal feedback from mechanical devices, such as triggering adjustments after stress changes are detected by force sensors. However, due to the large overall structure, the platform has already tilted significantly when feedback occurs, and inertia prevents immediate leveling, easily leading to construction accidents. Furthermore, traditional systems require leveling after braking, severely slowing down construction progress. Mechanical leveling structures also suffer from friction interference, signal ambiguity, and false alarms because the force sensor is located later and cannot distinguish the cause of stress. Therefore, developing a forward feedback leveling system is crucial. Magnetic levitation technology, as a non-contact sensing system, has high sensitivity and can quickly capture motion information, making real-time tilt prediction possible. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the above-mentioned technical defects and provide a front feedback leveling system for a multi-column lifting platform based on magnetic levitation technology, comprising: a platform body, multiple columns supporting the platform body, a lifting mechanism, a magnetic levitation technology measurement system, an intelligent control module, and a drive module; The magnetic levitation technology measurement system is arranged on the platform body and the support column to monitor the position change and tilt state of the platform relative to the support column in real time and output monitoring signals. The intelligent control module is electrically connected to the magnetic levitation technology measurement system, receives the monitoring signal, and processes the monitoring signal through a built-in forward feedback control algorithm to predict the tilt trend of the platform and generate control signals. The drive module is connected to the intelligent control module and the lifting mechanism, and adjusts the operating speed or height of the lifting mechanism according to the control signal to achieve real-time leveling of the platform during movement.

[0004] Preferably, the magnetic levitation measurement system includes an electromagnetic induction component, which includes a primary coil, a guide electromagnet, a secondary coil, a primary winding of a linear motor, and a secondary winding of a linear motor. The primary winding of the linear motor is fixedly installed on the platform body, the secondary winding of the linear motor and the guide electromagnet are fixedly installed on the support column, and the primary coil is arranged on the side of the support column. When the platform moves, the secondary winding of the linear motor interacts with the primary winding of the linear motor through electromagnetic induction to generate a first electrical signal, which reflects the fluctuation of the platform's running speed. The primary coil generates a second electrical signal based on the change in the platform's tilt angle; The first and second electrical signals are input to the intelligent control module for comparison and analysis.

[0005] Preferably, the guide electromagnet is a permanent magnet that works synchronously with the primary winding of the linear motor to enhance magnetic field stability; the secondary coil is used to assist in detecting the relative displacement between the platform and the support.

[0006] Preferably, the intelligent control module includes a high-performance industrial controller, and the forward feedback control algorithm performs tilt prediction based on the comparison between the monitoring signal and a preset safety threshold. The safety threshold includes a horizontal tilt angle threshold of ±0.5° and a column height difference threshold of ±2mm.

[0007] Preferably, it also includes an Internet of Things (IoT) module, which is connected to the intelligent control module for receiving environmental monitoring data and load monitoring data from an external construction management platform. The intelligent control module also optimizes tilt prediction based on the environmental monitoring data and load monitoring data, wherein the environmental monitoring data includes wind speed, wind direction, and ground subsidence information, and the load monitoring data includes material weight and personnel distribution information.

[0008] Preferably, guide rails are provided on both sides of the column, and a guide wheel assembly is provided on the platform body to guide and cooperate with the guide rails; The drive module includes a motor and a reducer mounted on the platform body. The output end of the motor is connected to the input end of the reducer. The output end of the reducer is provided with a drive gear. The column is provided with a transmission rack that meshes with the drive gear. The motor is mechanically connected to the lifting mechanism through a gear and rack transmission mechanism. The motor operates at a variable frequency according to the control signal to realize stepless speed regulation of the lifting mechanism so as to complete leveling without stopping the machine.

[0009] The guide wheel assembly is made of nylon composite material and works with the guide rail to reduce friction loss; the motor is a three-phase asynchronous motor, which works with a frequency converter to achieve stepless speed regulation from 0 to 100Hz and intervenes through a brake in an emergency.

[0010] Preferably, the main body of the platform is composed of multiple steel structure platforms spliced ​​together by pins, with each platform section being 1.5m long and 1-1.5m wide, and the surface is covered with anti-slip steel plates.

[0011] Preferably, the platform body is provided with guardrails on both sides, and the lower part of the platform body is provided with a reinforcing support frame.

[0012] Preferably, the support column consists of multiple adjustable legs, each leg having a shock-absorbing rubber pad at its bottom. The shock-absorbing rubber pad is at least 20mm thick and is used to absorb vibrations and adapt to uneven ground. Compared with the prior art, the advantages of this application are mainly reflected in the following aspects: First, it achieves a breakthrough from "post-feedback" to "pre-feedback." Traditional systems rely on force sensors for mechanical correction after the platform has tilted, resulting in a delayed response. This system utilizes the high sensitivity and non-contact measurement characteristics of magnetic levitation technology, using electromagnetic induction components to monitor platform speed fluctuations and minute tilt angle changes in real time. This allows the intelligent control module to detect tilting trends as soon as they appear. Combined with a built-in pre-feedback control algorithm, the system can predict tilting risks in advance and instruct the drive module to actively adjust the lifting speed of the corresponding support pillars. This achieves real-time, proactive leveling during the dynamic process, fundamentally avoiding significant platform tilting and safety accidents caused by response delays and inertia.

[0013] Secondly, the leveling process is efficient and does not require interruption of construction. The system achieves stepless speed regulation through a variable frequency motor and a gear and rack transmission mechanism, and can directly complete precise height compensation while the platform is running, overcoming the delay in construction progress caused by the traditional system that requires braking before leveling.

[0014] Furthermore, measurement accuracy and anti-interference capabilities are significantly improved. Non-contact magnetic levitation measurement avoids interference from mechanical friction, resulting in clear and accurate signals. In addition, the integration of an IoT module incorporates external data such as wind speed and load, making the tilt prediction model more intelligent and comprehensive, further enhancing the system's reliability and safety.

[0015] In summary, this system, through the magnetic levitation feedback mechanism, has achieved a leap from passive correction to active prevention in leveling technology, and has significant advantages in safety, efficiency and intelligence. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation structure of a traditional lifting platform; Figure 2 This is a schematic diagram of the front feedback leveling system of a multi-column lifting platform based on magnetic levitation technology according to this application; Figure 3 This is a top view of the front feedback leveling system for a multi-column lifting platform based on magnetic levitation technology, as described in this application. Figure 4 yes Figure 3 A magnified view of part A in the diagram; Figure 5 yes Figure 3 A magnified view of part B in the diagram; As shown in the figure: 1. Platform body, 2. Support column, 3. Primary coil, 4. Guide electromagnet, 5. Guide wheel assembly, 6. Primary winding of linear motor, 7. Secondary winding of linear motor, 8. Drive gear, 9. Transmission gear, 10. Guide rail. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0019] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0020] To make the content of this invention easier to understand, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] Reference Appendix Figure 2 -Appendix Figure 5 This application provides a front-feedback leveling system for a multi-column lifting platform based on magnetic levitation technology. This system is mainly used in building construction, utilizing magnetic levitation technology to achieve real-time monitoring and active leveling of the platform during lifting, avoiding tilting accidents caused by feedback lag in traditional systems. The system includes: a platform body 1, multiple columns 2 supporting the platform body 1, a lifting mechanism, a magnetic levitation measurement system, an intelligent control module, and a drive module.

[0022] The magnetic levitation technology measurement system is arranged on the platform body 1 and the support column 2, and is used to monitor the position change and tilt state of the platform relative to the support column 2 in real time, and output monitoring signals. The intelligent control module is electrically connected to the magnetic levitation technology measurement system, receives the monitoring signal, and processes the monitoring signal through a built-in forward feedback control algorithm to predict the tilt trend of the platform and generate control signals. The drive module is connected to the intelligent control module and the lifting mechanism, and adjusts the operating speed or height of the lifting mechanism according to the control signal to achieve real-time leveling of the platform during movement.

[0023] Preferably, the magnetic levitation measurement system includes an electromagnetic induction component, which includes a primary coil 3, a guide electromagnet 4, a secondary coil, a primary winding 6 of a linear motor, and a secondary winding 7 of a linear motor.

[0024] The primary winding 6 of the linear motor is fixedly installed on the platform body 1, the secondary winding 7 of the linear motor and the guide electromagnet 4 are fixedly installed on the support column 2, and the primary coil 3 is arranged on the side of the support column 2.

[0025] When the platform moves, the secondary winding 7 of the linear motor interacts with the primary winding 6 of the linear motor through electromagnetic induction to generate a first electrical signal, which reflects the fluctuation of the platform's running speed. The primary coil 3 generates a second electrical signal according to the change in the tilt of the platform, and the second electrical signal reflects the tilt angle of the platform. The first and second electrical signals are input to the intelligent control module for comparison and analysis.

[0026] This dual-signal comparison mechanism ensures high monitoring accuracy because the first electrical signal captures speed changes (such as acceleration or deceleration due to uneven load), while the second electrical signal is directly related to the tilt angle. Through the fusion processing of the intelligent control module, the tilt risk can be predicted 0.5-1 seconds in advance.

[0027] In one embodiment of this application, the guide electromagnet 4 is a permanent magnet that works synchronously with the primary winding 6 of the linear motor to enhance magnetic field stability; the secondary coil is used to assist in detecting the relative displacement between the platform and the support column 2. Specifically, the guide electromagnet 4 uses neodymium iron boron permanent magnet material, which has high magnetic field strength and good temperature stability, and can maintain a constant magnetic flux in a construction environment ranging from -20℃ to 60℃. When the platform body 1 rises and falls along the support column 2, the traveling wave magnetic field generated by the guide electromagnet 4 and the primary winding 6 of the linear motor interacts to form a stable magnetic levitation support, reducing errors caused by mechanical friction. The secondary coil is arranged at key nodes (such as connections) of the support column 2, and monitors the minute displacements between the platform and the support column (accuracy up to ±0.1mm) by detecting changes in the magnetic field. These data are complementary to the signal of the primary coil 3, further improving the reliability of monitoring. In addition, in this embodiment, the data refresh rate of the magnetic levitation technology measurement system reaches over 100Hz, ensuring that it can capture instantaneous fluctuations caused by changes in wind speed or load during construction.

[0028] In one embodiment of this application, the intelligent control module includes a high-performance industrial controller (such as a processing chip based on the ARM Cortex-A series). The forward feedback control algorithm predicts tilt based on a comparison of the monitoring signal and a preset safety threshold. The safety threshold includes a horizontal tilt angle threshold of ±0.5° and a column height difference threshold of ±2mm. The core of the intelligent control module is a fuzzy neural network algorithm, which simulates human thinking and processes complex data such as platform movement, environment, and load. For example, when the monitoring signal shows that the platform tilt angle is close to ±0.3°, the algorithm combines historical data (such as the number of platform rises and falls, and previous tilt patterns) and real-time environmental data (such as wind speed) to calculate the tilt probability within the next second. If the probability exceeds 85%, a control signal is generated to trigger the leveling action in advance. In addition, the intelligent control module also integrates a self-learning function, continuously optimizing the threshold settings and reducing false alarms through big data analysis of common tilt scenarios in construction (such as concentrated personnel movement).

[0029] In one embodiment of this application, an Internet of Things (IoT) module is also included. This IoT module is data-connected to the intelligent control module and is used to receive environmental monitoring data and load monitoring data from an external construction management platform. The intelligent control module further optimizes tilt prediction based on the environmental and load monitoring data. The environmental monitoring data includes wind speed, wind direction, and ground subsidence information, while the load monitoring data includes material weight and personnel distribution information. The IoT module uses 4G / 5G communication protocols to acquire data from the construction management platform in real time. For example, when the wind speed sensor detects a wind speed exceeding level 5 (approximately 8 m / s), the IoT module sends this data to the intelligent control module, which automatically adjusts the safety threshold to ±0.3° to cope with the wind load effect. Simultaneously, load monitoring is achieved through weight sensors and camera image analysis. If a sudden increase of 200 kg in material weight is detected on one side of the platform, the intelligent control module predicts that side may tilt and proactively instructs the drive module to fine-tune the support pillar on that side. This multi-data fusion enables the system to possess "contextual awareness" capabilities, significantly improving prediction accuracy.

[0030] In one embodiment of this application, guide rails 10 are provided on both sides of the column 2, and guide wheel assembly 5 is provided on the platform body 1 to guide and cooperate with the guide rails 10. The drive module includes a motor and a reducer mounted on the platform body 1. The output end of the motor is connected to the input end of the reducer. The output end of the reducer is provided with a drive gear 8. The column 2 is provided with a transmission rack 9 that meshes with the drive gear 8. The drive rack and pinion mechanism is mechanically connected to the lifting mechanism. The motor operates at a variable frequency according to the control signal to achieve stepless speed regulation of the lifting mechanism, so as to complete the leveling without stopping the machine. Specifically, the motor is a three-phase asynchronous motor, which is used with a frequency converter to achieve stepless speed regulation from 0-100Hz. When the intelligent control module sends a control signal, the motor adjusts its speed according to the tilt trend: if it is predicted that the left side of the platform will tilt downward, the frequency of the left motor will be reduced to slow down the lifting speed on that side, while maintaining or accelerating the right motor, thereby achieving dynamic balance in the movement of the platform. The guide wheel assembly 5 is made of nylon composite material to reduce friction loss with the guide rails 10 and ensure smooth guidance. In addition, the drive module is also equipped with a brake, which is only used in emergency situations (such as when the tilt exceeds the limit). Normal leveling relies entirely on front feedback to achieve non-stop operation and avoid construction interruption.

[0031] In one embodiment of this application, the platform body 1 is constructed from steel structure platforms assembled using pins. Each platform section is 1.5m long and 1-1.5m wide, with a surface covered with anti-slip steel plates. The support column 2 consists of multiple adjustable legs, with rubber pads installed at the bottom of the legs to adapt to uneven ground. The standard length of a single platform section is preferably 1.5 meters. The entire platform can be formed by assembling different numbers of single platform sections, with the width adjustable from 1.0 to 1.5 meters to meet different construction needs. The platform surface is covered with anti-slip steel plates with raised patterns, effectively enhancing friction and preventing workers and materials from slipping, ensuring operational safety. The support column 2 also adopts a modular steel structure, composed of multiple adjustable legs, with the leg height independently adjustable. A shock-absorbing rubber pad with a thickness of not less than 20mm is installed at the bottom of each leg. This design not only effectively absorbs vibration but also better adapts to uneven ground conditions that may exist on the construction site. By fine-tuning the height of each leg, the initial installation level of all supports is ensured, laying a solid foundation for precise leveling of the platform.

[0032] Furthermore, the workflow of this invention is as follows: During platform lifting and lowering, the magnetic levitation measurement system continuously collects data, the intelligent control module predicts the tilt trend through a feedback algorithm, and the drive module adjusts the speed of each support motor to achieve real-time leveling. The entire process requires no manual intervention, and due to the non-contact nature of magnetic levitation technology, the system is unaffected by mechanical wear and has a long lifespan.

[0033] Finally, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make modifications without departing from the spirit of the invention, such as adjusting sensor layout or algorithm parameters, all of which fall within the scope of protection of the invention. The invention and its embodiments have been described above; this description is not restrictive, and the figures shown are only one embodiment of the invention, and the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the scope of protection of the invention.

Claims

1. A front feedback leveling system for a multi-column lifting platform based on magnetic levitation technology, characterized in that, include: The platform body (1), multiple pillars (2) supporting the platform body (1), lifting mechanism, magnetic levitation technology measurement system, intelligent control module and drive module; The magnetic levitation technology measurement system is arranged on the platform body (1) and the pillars (2) to monitor the position change and tilt state of the platform relative to the pillars (2) in real time and output monitoring signals; The intelligent control module is electrically connected to the magnetic levitation technology measurement system, receives the monitoring signal, and processes the monitoring signal through a built-in forward feedback control algorithm to predict the tilt trend of the platform and generate control signals. The drive module is connected to the intelligent control module and the lifting mechanism, and adjusts the operating speed or height of the lifting mechanism according to the control signal to realize real-time leveling of the platform during movement; The magnetic levitation measurement system includes an electromagnetic induction component, which includes a primary coil (3), a guide electromagnet (4), a secondary coil, a primary winding (6) of a linear motor, and a secondary winding (7) of a linear motor. The primary winding (6) of the linear motor is fixedly installed on the platform body (1), the secondary winding (7) of the linear motor and the guide electromagnet (4) are fixedly installed on the support column (2), and the primary coil (3) is set on the side of the support column (2). When the platform moves, the secondary winding (7) of the linear motor interacts with the primary winding (6) of the linear motor through electromagnetic induction to generate a first electrical signal, which reflects the fluctuation of the platform's running speed. The primary coil (3) generates a second electrical signal according to the change in the tilt of the platform, and the second electrical signal reflects the tilt angle of the platform; The first and second electrical signals are input to the intelligent control module for comparison and analysis.

2. The multi-column lifting platform front feedback leveling system as described in claim 1, characterized in that, The guide electromagnet (4) is a permanent magnet that works synchronously with the primary winding (6) of the linear motor to enhance the stability of the magnetic field; the secondary coil is used to assist in detecting the relative displacement between the platform and the support (2).

3. The multi-column lifting platform front feedback leveling system as described in claim 1, characterized in that, The intelligent control module includes a high-performance industrial controller. The forward feedback control algorithm predicts tilt based on the comparison between the monitoring signal and a preset safety threshold. The safety threshold includes a horizontal tilt angle threshold of ±0.5° and a column height difference threshold of ±2mm.

4. The multi-column lifting platform front feedback leveling system as described in claim 1, characterized in that, It also includes an Internet of Things (IoT) module, which is connected to the intelligent control module to receive environmental monitoring data and load monitoring data from an external construction management platform. The intelligent control module also optimizes tilt prediction based on the environmental monitoring data and load monitoring data, whereby the environmental monitoring data includes wind speed, wind direction, and ground subsidence information, and the load monitoring data includes material weight and personnel distribution information.

5. The multi-column lifting platform front feedback leveling system as described in claim 1, characterized in that, The support column (2) is provided with guide rails (10) on both sides, and the platform body (1) is provided with a guide wheel assembly (5) that cooperates with the guide rails (10). The drive module includes a motor and a reducer installed on the platform body (1). The output end of the motor is connected to the input end of the reducer. The output end of the reducer is provided with a drive gear (8). The support column (2) is provided with a transmission rack (9) that meshes with the drive gear (8). The motor operates according to the frequency conversion of the control signal to realize the stepless speed regulation of the lifting mechanism, so as to complete the leveling without stopping the machine.

6. The multi-column lifting platform front feedback leveling system as described in claim 5, characterized in that, The guide wheel assembly (5) is made of nylon composite material and is used in conjunction with the guide rail (10) to reduce friction loss; the motor is a three-phase asynchronous motor, which is used in conjunction with the frequency converter to achieve stepless speed regulation from 0 to 100 Hz, and can be intervened by the brake in an emergency.

7. The multi-column lifting platform front feedback leveling system as described in claim 1, characterized in that, The main body of the platform (1) is composed of multiple steel structure platforms spliced ​​together by pin shafts. Each platform section is 1.5m long and 1-1.5m wide, and the surface is covered with anti-slip steel plates.

8. The multi-column lifting platform front feedback leveling system as described in claim 7, characterized in that, The platform body (1) is equipped with guardrails on both sides, and the lower part of the platform body (1) is equipped with a reinforcing support frame.

9. The multi-column lifting platform front feedback leveling system as described in claim 1, characterized in that, The support column (2) consists of multiple adjustable legs, each leg having a shock-absorbing rubber pad at its bottom. The shock-absorbing rubber pad is not less than 20mm thick and is used to absorb vibration and adapt to uneven ground.

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