Tubular motor brake device and control method

Abstract

The invention discloses a tubular motor brake control method, which comprises a permanent magnet adsorption module, when a system is started, a brake shaft is locked by a brake flange plate through elastic piece connection by utilizing the adsorption force of a permanent magnet on an armature, and an initial brake locking state is realized; after receiving the loosening signal, the electromagnetic control module controls a circuit electrifying coil to generate a reverse magnetic field; after a coil in the magnetic field counteracting module is electrified, a magnetic field opposite to a permanent magnet magnetic field is generated between the coil and an iron core to counteract adsorption force of a permanent magnet. When the adsorption force of the permanent magnet is reduced, the reset and release module pushes the armature and the brake flange plate to reset, and the brake locking state is relieved; after the brake system recovers to the non-locking state, the coil of the system state maintaining and optimizing module continues to be powered on so as to maintain the counteracting state, and it is ensured that the brake system is stably kept in the non-locking state. Therefore, more stable braking is guaranteed, the magnetic field power needed by the elastic piece is smaller, coil heating is avoided, and continuous operation can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of tubular motors, and in particular to a tubular motor braking device and a control method. Background Art

[0002] The prior art utilizes a spring connected to an armature with the same magnetic properties as the magnetic field after power is applied to the magnetic field. When power is applied to the magnetic field, the armature connected to the spring repels the magnetic poles due to the same magnetic poles as the magnetic field, thereby pressing against the brake shaft to achieve the purpose of braking. When power is cut off, the magnetic field is eliminated, and the armature connected to the spring is separated from the brake shaft due to attraction to the magnetic field, thereby releasing the brake.

[0003] Since the spring connection gap is too large, the armature and the brake shaft will collide when they are pressed tightly, resulting in a loud impact sound; at the same time, the braking and releasing actions depend on the elasticity of the spring and the magnetic change of the armature. The response speed of the spring and the rate of magnetic change of the armature may be affected by factors such as material properties, ambient temperature and magnetic field strength, resulting in insufficient brake response speed, and parts such as the armature and spring may wear out or fail during long-term use, requiring regular maintenance and replacement, and the maintenance and replacement costs of these parts may be high. Summary of the invention

[0004] The present application aims at the deficiencies of the above-mentioned prior art by providing a tubular motor brake control method, in which the spring is replaced with a spring clip connecting the armature. The spring clip has a small elastic force, so the elastic gap space is limited, so the sound is small when it collides with the brake shaft, and the sound is small when the brake is stopped; at the same time, the spring clip is more stable, which can ensure more stable braking, and the magnetic field power required by the spring clip is smaller, and the required coil current is smaller, which can avoid coil heating and achieve continuous operation.

[0005] The present application provides a tubular motor brake device, including an iron core, a coil, an armature, a brake shaft, a brake flange, a spring, and a permanent magnet; the brake flange is sleeved on the outer wall of the brake shaft, an armature is provided on one side of the brake flange, the armature and the brake flange are connected by the spring, the iron core is connected to the end of the armature away from the brake sleeve, the coil is wound around the outside of the iron core to form a magnetic field, and the permanent magnet is installed at the end of the armature away from the armature, interacting with the magnetic field generated by the coil, so that the armature and the permanent magnet are provided at both ends of the iron core.

[0006] The present application also provides a control method for a tubular motor brake device, the control method is executed by a permanent magnetic adsorption module, an electromagnetic control module, a magnetic field compensation module, a reset and release module, and a system state maintenance and optimization module:

[0007] The permanent magnet adsorption module uses the inherent adsorption force of the permanent magnet on the armature when the system is started, and connects through the spring clip to lock the brake flange to the brake shaft to achieve the initial brake locking state; the brake shaft passes through a magnetic field area composed of an iron core and a coil wrapped thereon, passing through the entire device, and is the core component for controlling rotation.

[0008] The electromagnetic control module, after receiving the release signal, controls the circuit to energize the coil and generate a reverse magnetic field;

[0009] The magnetic field cancellation module generates a reverse magnetic field in the opposite direction of the permanent magnet magnetic field between the coil and the iron core after the coil is energized. The reverse magnetic field is gradually enhanced by increasing the current to cancel the adsorption force of the permanent magnet.

[0010] Reset and release module: when the adsorption force of the permanent magnet decreases, the reset force provided by the spring starts to play a role, pushing the armature and the brake flange to reset and release the brake lock state;

[0011] System state maintenance and optimization module, after the brake system returns to the non-locking state, the coil continues to be energized to maintain the offset state, ensuring that the brake system remains stably in the non-locking state.

[0012] Preferably, the method specifically comprises:

[0013] S101, in the initial state, the permanent magnet has magnetism to generate an adsorption force on the armature, and the armature is adsorbed by the permanent magnet and moves toward the permanent magnet through the spring;

[0014] S102, the armature is attracted by the permanent magnet, driving the brake flange to tightly embrace the brake shaft, preventing its rotation through friction, thus achieving brake locking;

[0015] S103, receiving a brake signal, the control circuit energizes the coil to activate the reverse magnetic field, the coil is energized to generate a reverse magnetic field, and interacts with the magnetic field of the permanent magnet;

[0016] S104, the current increases, the magnetic field of the coil is enhanced to offset the magnetic field of the permanent magnet, and the attraction force on the armature is weakened. The magnetic force is weakened, and the spring piece resets the armature and rebounds;

[0017] S105, after the armature is reset, the locking force is released, the friction between the brake flange and the shaft is reduced, the brake shaft rotates freely, the system returns to the non-locking state, and the coil remains energized or automatically de-energized.

[0018] Preferably, the step S102, wherein the brake flange tightly embraces the brake shaft, comprises:

[0019] The armature is fixed to the other end of the brake shaft and has an armature on it for transmitting the braking force; the armature is connected to the brake flange through a spring and changes its position under the influence of an external magnetic field.

[0020] Preferably, the method further comprises:

[0021] The armature is attracted to the iron core by the permanent magnet, and the connected brake flange fits the brake shaft through friction or built-in mechanical structure, exerting a locking force to prevent the rotation of the brake shaft, so that the brake system enters a stable state of complete locking, ensuring the safe stationary state of the motor.

[0022] Preferably, in said S104, it includes:

[0023] As the current increases, the magnetic field strength generated in the coil increases. The enhanced magnetic field interacts with the magnetic field of the permanent magnet, causing the directions of the magnetic fields between the two to become opposite and cancel each other out, thereby weakening the original adsorption force of the permanent magnet on the armature.

[0024] Preferably, the S101 further includes:

[0025] S201, optimize the elastic coefficient and stiffness of the spring to ensure stable reset of the armature and reduce the elastic gap;

[0026] S202 uses low current and high efficiency coils, and high quality wires to reduce resistance and heat generation, achieving strong magnetic fields at low currents;

[0027] S203, assemble brake system components, including armature, spring, brake flange, brake shaft, etc., to ensure that the matching accuracy and clearance control meet the design standards;

[0028] S204, fully debug the brake system and test the braking performance and stability under multiple loads.

[0029] Preferably, the coil magnetic field enhancement in S104 includes:

[0030] S301, increase the number of coil turns to improve the electromagnetic induction intensity, and adjust the distance between turns to ensure uniform magnetic field distribution;

[0031] S302, use staggered winding method to reduce electromagnetic interference;

[0032] S303, replace ferromagnetic materials with higher magnetic permeability and lower resistivity to improve magnetic field strength and distribution uniformity;

[0033] S304, designing an iron core in the shape of a focusing ring to guide the magnetic field to focus and enhance, thereby increasing the intensity of the magnetic field in the target area;

[0034] S305, adjusting the relative position and distance between the coil and the iron core to optimize the coupling effect.

[0035] Preferably, the S303 includes:

[0036] The magnetic field strength is increased by using ferromagnetic materials (NdFeB armature) with higher magnetic permeability and lower resistivity. These materials can more effectively concentrate and guide the magnetic field lines and reduce the energy loss caused by the resistance of the material itself.

[0037] Preferably, the method further comprises:

[0038] S401, the encoder monitors the load change of the lifting equipment and the corresponding downward speed in real time, providing accurate data input;

[0039] S402, the control system receives the speed data of the encoder, performs real-time analysis, and identifies the deviation between the current speed and the target speed;

[0040] S403, based on the speed deviation, the control system calculates an appropriate circuit conduction timing to adjust the braking force to balance the load impact;

[0041] S404, at the determined conduction timing, the control system accurately controls the conduction state of the relevant circuits and adjusts the electromagnetic field strength or the braking mechanism;

[0042] S405, the change of the circuit conduction state directly affects the interaction force between the armature and the iron core, thereby dynamically adjusting the braking force during downward movement;

[0043] S406, during the entire descending process, the control system continuously monitors the speed change and repeats steps S402 to S405 as needed to maintain the consistency of the lifting speed.

[0044] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0045] 1. By accurately calculating the elastic coefficient and stiffness of the shrapnel, the armature is ensured to be repositioned stably, the brake performance fluctuation is avoided, and the impact sound is reduced to improve the user experience. The design of low-current high-efficiency coils and high-quality wire materials reduces energy consumption and heat generation, extends the system life, and improves the energy efficiency ratio. At the same time, the use of high-quality materials and precision assembly technology improves the matching accuracy and durability of system components, and enhances the overall reliability and service life of the system.

[0046] 2. Electromagnetic field optimization uses electromagnetic simulation software and experimental test equipment, combining scientificity and precision to effectively reduce the cost and time of trial and error. Through multiple iterations to adjust the parameters of coils, cores, etc., the optimization process flexibly adapts to changes in design goals and actual needs, ensuring that the optimization results are close to the optimal solution and improving the performance of the final product. This process not only improves the optimization efficiency, but also ensures the accuracy and reliability of the design in practical applications.

[0047] 3. Through real-time monitoring and intelligent analysis, the system can accurately predict braking needs and dynamically adjust braking force to improve driving safety, stability and comfort. At the same time, the integrated sensor and intelligent diagnosis system can fully monitor the status of the braking system, predict and diagnose faults in advance, reduce unplanned downtime, and significantly improve the reliability, stability and operating efficiency of the braking system. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic flow chart of a tubular motor brake control method according to an embodiment of the present invention;

[0049] Figure 2 A schematic flow chart of a tubular motor brake control method according to another embodiment of the present invention;

[0050] Figure 3 A schematic diagram of a tubular motor brake device according to an embodiment of the present invention;

[0051] Figure 4 The figure is a schematic structural diagram of a tubular motor brake device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0052] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0053] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0055] Embodiment 1: A tubular motor brake device according to an embodiment of the present invention, such as Figure 3As shown, it includes: an iron core, a coil, an armature, a brake shaft, a brake flange, a spring, and a permanent magnet; the brake flange is sleeved on the outer wall of the brake shaft, an armature is provided on one side of the brake flange, the armature and the brake flange are connected by the spring, the iron core is connected to the end of the armature away from the brake and away from the sleeve, the coil is wound around the outside of the iron core to form a magnetic field, and the permanent magnet is installed at the end of the armature away from the armature, which interacts with the magnetic field generated by the coil, so that the armature and the permanent magnet are provided at both ends of the iron core.

[0056] Figure 1 It is a flow chart of a control method of a tubular motor brake device according to an embodiment of the present invention.

[0057] like Figure 4 As shown, the control method of the tubular motor brake device is executed by a permanent magnetic adsorption module, an electromagnetic control module, a magnetic field compensation module, a reset and release module, and a system state maintenance and optimization module:

[0058] The permanent magnetic adsorption module uses the inherent adsorption force of the permanent magnet on the armature when the system is started, and connects through the spring piece to make the brake flange lock the brake shaft to achieve the initial brake locking state; wherein, the brake shaft passes through a magnetic field area composed of an iron core and a coil wrapped thereon, passing through the entire device, and is the core component for controlling rotation;

[0059] The electromagnetic control module, after receiving the release signal, controls the circuit to energize the coil and generate a reverse magnetic field;

[0060] The magnetic field cancellation module generates a reverse magnetic field in the opposite direction of the permanent magnet magnetic field between the coil and the iron core after the coil is energized. The reverse magnetic field is gradually enhanced by increasing the current to cancel the adsorption force of the permanent magnet.

[0061] Reset and release module: when the adsorption force of the permanent magnet decreases, the reset force provided by the spring starts to play a role, pushing the armature and the brake flange to reset and release the brake lock state;

[0062] System state maintenance and optimization module, after the brake system returns to the non-locking state, the coil continues to be energized to maintain the offset state, ensuring that the brake system remains stably in the non-locking state.

[0063] like Figure 1 As shown, the control method of the tubular motor brake device specifically includes the following steps:

[0064] S101, in the initial state, the permanent magnet has magnetism to generate an adsorption force on the armature, and the armature is adsorbed by the permanent magnet and moves toward the permanent magnet through the spring;

[0065] For example, suppose a car is parked in a garage and its brake system is in the brake state without coil power. At this time, the car's brake shaft is quietly fixed at the center of the wheel, without any push from driving or external forces. Inside the brake system, the coil responsible for generating the magnetic field through the current is silent at this moment, like an unopened power socket, not emitting any electromagnetic signals to the outside. Therefore, the iron core surrounding the coil also remains in its natural, non-magnetized state, and will not generate any attraction or repulsion force on nearby armatures or metal parts. The entire brake system is like being frozen in a still picture, waiting for the next power-on signal to arrive in preparation for its braking or release task.

[0066] S102, the armature is attracted by the permanent magnet and the friction between the armature and the iron core prevents the armature from rotating, thus achieving brake locking.

[0067] The permanent magnet is located at the other end of the magnetic field part, interacting with the magnetic field generated by the coil, and has stable magnetism. The spring connects the armature and the brake flange to provide reset force.

[0068] Specifically, the permanent magnet uses its inherent stable magnetism to exert a continuous adsorption force on the nearby armature. After feeling this force, the armature begins to move along the spring toward the direction of the permanent magnet.

[0069] The spring acts as a bridge connecting the armature and the brake flange. It not only transmits the movement of the armature, but also provides a reset force when necessary to help the armature return to its initial position.

[0070] Among them, the armature is fixed to the other end of the brake shaft, on which there is an armature for transmitting the braking force; the armature is connected to the brake flange through a spring plate, and its position changes under the influence of the external magnetic field.

[0071] Specifically, the armature is attracted to the iron core by the permanent magnet, and the connected brake flange fits the brake shaft through friction or built-in mechanical structure, exerting a locking force to prevent the brake shaft from rotating, causing the brake system to enter a stable state of complete locking, ensuring the safe stationary state of the motor.

[0072] S103, receiving a brake signal, the control circuit energizes the coil to activate the reverse magnetic field. The coil is energized to generate a reverse magnetic field, which interacts with the magnetic field of the permanent magnet.

[0073] S104, the current increases, the magnetic field of the coil is enhanced to offset the magnetic field of the permanent magnet, and its adsorption force on the armature is weakened. The magnetic force is weakened, and the spring piece resets the armature and rebounds.

[0074] Specifically, as the current increases, the magnetic field strength generated in the coil increases, and the enhanced magnetic field interacts with the magnetic field of the permanent magnet, causing the directions of the magnetic fields between the two to tend to be opposite and cancel each other out, thereby weakening the original adsorption force of the permanent magnet on the armature.

[0075] Among them, the rebound reset is that the spring uses its own elastic potential energy to push the armature from the adsorbed position to the opposite direction until the armature returns to its initial position or a predetermined position.

[0076] When the attraction force of the permanent magnet on the armature is weakened to a sufficiently low level by the magnetic field generated by the coil, the armature is freed from the strong attraction constraint.

[0077] At this time, the spring connected to it uses its inherent elasticity to quickly apply a reset force, pushing the armature to move in the opposite direction and return to its initial position or the preset release state, which ensures that the brake system can be transformed from the locked state to the released state in a timely and effective manner.

[0078] S105, after the armature is reset, the locking force is released, the armature is separated from the iron core, the brake shaft rotates freely, the system returns to the non-locking state, and the coil remains energized or automatically de-energized.

[0079] Specifically, when the armature of the electromagnetic brake is reset, the locking force originally generated by the electromagnetic force is released, and the armature and the iron core are no longer in close contact, allowing the brake shaft to rotate freely. At this time, the system returns from the braking state to the non-braking state, and the coil that controls this process may continue to remain energized to prepare for the next braking or automatically power off.

[0080] During this process, the friction or mechanical locking mechanism between the brake flange and the brake shaft is significantly weakened, thereby releasing the restriction on the rotation of the brake shaft, allowing the brake shaft to regain the ability to rotate freely, thereby restoring the normal operation of the entire system or preparing to enter the next operation stage.

[0081] In some embodiments, the control method of the tubular motor brake device, the S101, as Figure 2 As shown, specifically including:

[0082] S201, optimize the elastic coefficient and stiffness of the spring to ensure stable resetting of the armature and reduce the elastic gap.

[0083] S202 uses low current and high efficiency coils, and high quality wires to reduce resistance and heat generation, achieving a strong magnetic field at low current.

[0084] S203, assemble brake system components, including armature, spring, brake flange, brake shaft, etc., to ensure that the matching accuracy and clearance control meet the design standards.

[0085] S204, fully debug the brake system and test the braking performance and stability under multiple loads.

[0086] It should be noted that the design, assembly and debugging of the brake system require comprehensive consideration of multiple factors, the use of high-quality materials, strict control of assembly accuracy and comprehensive debugging and testing to ensure that the brake system can demonstrate excellent performance under various working conditions.

[0087] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0088] 1. By accurately calculating and optimizing the elastic coefficient and stiffness of the spring, the armature is ensured to be repositioned stably under the action of the magnetic field, effectively avoiding the fluctuation of braking performance caused by unstable repositioning. At the same time, the elastic gap is reduced to reduce the impact sound during braking and improve the user experience.

[0089] 2. Design low-current high-efficiency coils and select high-quality wire materials to significantly reduce the resistance and heat generation of the coils. This not only reduces energy consumption, but also extends the working life of the system and improves the energy efficiency of the system. The use of high-quality materials and precise assembly processes ensures the matching accuracy and clearance control between the various components of the brake system. This helps reduce performance degradation caused by wear and looseness and improves the durability and reliability of the system.

[0090] Embodiment 2: In embodiment 1, the permanent magnet generates a stable adsorption force on the nearby armature due to its inherent magnetism. If the magnetic field generated by the permanent magnet is small, its adsorption force on the nearby armature will be weakened. This weakening of adsorption force may cause the connection between the armature and the permanent magnet to become less firm when the brake system is not powered, affecting the reliability and stability of the brake. When braking is needed, the brake response may be slow or the braking force may be insufficient, increasing safety risks.

[0091] In some embodiments, the enhanced magnetic field can significantly increase the adsorption force of the permanent magnet on the nearby armature, ensuring that the brake system can firmly maintain the brake state when the power is not on, and improving the reliability and stability of the brake. At the same time, when the power is on, the stronger magnetic field can more effectively interact with the magnetic field of the permanent magnet to achieve rapid release of the brake, improving the response speed and safety of the system.

[0092] Furthermore, the magnetic field strength in the braking system can be enhanced by optimizing the magnetic field generation mechanism, such as using high-performance magnetic materials, improving coil design or introducing advanced magnetic field control technology.

[0093] Therefore, if the magnetic field strength near the permanent magnet is insufficient or dispersed, the adsorption force on the armature is weakened, affecting the stability of the brake system when it is not powered on, endangering safety and reliability, and interfering with the brake performance analysis. To improve stability and analysis accuracy, we use enhanced magnetic field technology, optimize the magnetic field mechanism or introduce high-performance magnetic field generators to enhance adsorption, ensure the stability of the brake system when it is not powered on, ensure driving safety, and provide accurate evaluation data.

[0094] In some embodiments, the control method of the tubular motor brake device, the S104, coil magnetic field enhancement, includes:

[0095] S301, increase the number of coil turns to improve the electromagnetic induction intensity, and adjust the distance between turns to ensure uniform magnetic field distribution.

[0096] Specifically, the dual strategy of increasing the number of coil turns and fine-tuning the spacing between turns enhances the electromagnetic induction intensity and ensures uniform distribution of the magnetic field.

[0097] S302, use staggered winding method to reduce electromagnetic interference.

[0098] Specifically, the selection of the appropriate wire diameter should be based on the current size, resistance and inductance balance, and material properties to ensure that the wire can withstand the current without taking up too much space. Optimizing winding methods includes tight winding to reduce the gap between turns, arranging the wires in an orderly manner to avoid crossing and overlapping, and considering the use of winding machines to improve winding accuracy and efficiency.

[0099] S303, replace ferromagnetic materials with higher magnetic permeability and lower resistivity to improve magnetic field strength and distribution uniformity.

[0100] Among them, the use of ferromagnetic materials with higher magnetic permeability and lower resistivity (such as neodymium iron boron armature) can significantly increase the magnetic field strength, because these materials can more effectively concentrate and guide the magnetic field lines, while reducing the energy loss caused by the material's own resistance. In addition, this material can also improve the uniformity of the magnetic field distribution, making the magnetic field more stable in the target area, thereby improving the overall performance and efficiency of the electromagnetic device or system.

[0101] For example, replacing the traditional iron core material with a neodymium iron boron armature in motor design can significantly improve the motor's torque output and energy efficiency.

[0102] S304, designing an iron core in the shape of a focusing ring to guide the magnetic field to focus and enhance, thereby increasing the intensity of the magnetic field in the target area.

[0103] S305, adjusting the relative position and distance between the coil and the iron core to optimize the coupling effect.

[0104] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0105] 1. Electromagnetic field optimization is highly dependent on scientific methods and tools, such as electromagnetic simulation software and precise experimental test equipment. Through simulation verification, the effectiveness of design parameters can be preliminarily evaluated without manufacturing actual samples, greatly reducing the cost and time of trial and error. At the same time, actual testing provides the most direct performance feedback to ensure the accuracy and reliability of design theory in practical applications. This combination of scientificity and precision makes the optimization results more credible and effective.

[0106] 2. The optimization step includes multiple iterations and adjustments, which gives the optimization work great flexibility and adaptability. In actual operation, according to the test result feedback, the parameters of the coil and the core can be flexibly adjusted, including the number of turns, wire diameter, winding method, and material selection. This flexibility enables the optimization process to quickly respond to changes in design goals and actual needs, and continuously optimize and improve the design plan. At the same time, iteration also ensures that the optimization results continue to approach the optimal solution, improving the optimization efficiency and final performance. Through multiple iterations and adjustments, defects and deficiencies in the design can be gradually eliminated to ensure that the performance of the final product is optimal.

[0107] Embodiment 3: In some embodiments, the control method of the tubular motor brake device further includes:

[0108] S401, the encoder monitors the load change of the lifting equipment and the corresponding downward speed in real time, providing accurate data input.

[0109] S402, the control system receives the speed data of the encoder, performs real-time analysis, and identifies the deviation between the current speed and the target speed.

[0110] S403, based on the speed deviation, the control system calculates the appropriate circuit conduction timing to adjust the braking force to balance the load impact.

[0111] S404, at the determined conduction timing, the control system accurately controls the conduction state of the relevant circuits and adjusts the electromagnetic field strength or the braking mechanism.

[0112] S405, the change of the circuit conduction state directly affects the interaction force between the armature and the iron core, thereby dynamically adjusting the braking force during downward movement.

[0113] S406, during the entire descending process, the control system continuously monitors the speed change and repeats steps S402 to S405 as needed to maintain the consistency of the lifting speed.

[0114] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0115] 1. Highly load-adaptable technology can automatically adapt to various load conditions to ensure the stability and consistency of lifting speed. The braking system does not directly rely on the weight of the load to generate braking force, but is achieved through precise control of the electromagnetic field. This reduces the instability factors caused by load changes and improves the safety and reliability of the system.

[0116] 2. Through real-time monitoring and adjustment, it can respond quickly to load changes, ensure a smooth transition of lifting speed, avoid speed fluctuations caused by load changes, and use the encoder to control the circuit conduction time according to the load downward speed, so as to accurately control the braking force, reduce unnecessary energy consumption, and help reduce operating costs and environmental impact.

Claims

1. A tubular motor brake device, characterized in that: It includes an iron core, a coil, an armature, a brake shaft, a brake flange, a spring, and a permanent magnet; the brake flange is sleeved on the outer wall of the brake shaft, an armature is provided on one side of the brake flange, the armature and the brake flange are connected by the spring, the iron core is connected to the end of the armature away from the brake flange, the coil is wound around the outside of the iron core to form a magnetic field, the permanent magnet is installed at the end of the core away from the armature, and interacts with the magnetic field generated by the coil, so that the armature and the permanent magnet are provided at both ends of the iron core.

2. A control method for a tubular motor brake device as claimed in claim 1, characterized in that: The control method is executed by a permanent magnetic adsorption module, an electromagnetic control module, a magnetic field offset module, a reset and release module, and a system state maintenance and optimization module: The permanent magnetic adsorption module uses the inherent adsorption force of the permanent magnet on the armature to connect the brake flange to the brake shaft through the spring to achieve the initial brake locking state when the system is started; The electromagnetic control module, after receiving the release signal, controls the circuit to energize the coil and generate a reverse magnetic field; The magnetic field cancellation module generates a reverse magnetic field in the opposite direction of the permanent magnet magnetic field between the coil and the iron core after the coil is energized. The reverse magnetic field is gradually enhanced by increasing the current to cancel the adsorption force of the permanent magnet. Reset and release module: when the adsorption force of the permanent magnet decreases, the reset force provided by the spring starts to play a role, pushing the armature to reset and releasing the brake lock state; System state maintenance and optimization module, after the brake system returns to the non-locking state, the coil continues to be energized to maintain the offset state, ensuring that the brake system remains stably in the non-locking state.

3. A control method for a tubular motor brake device as claimed in claim 2, characterized in that: The method specifically comprises: S101, in the initial state, the permanent magnet has magnetism to generate an adsorption force on the armature, and the armature is adsorbed by the permanent magnet and moves toward the permanent magnet through the spring; S102, the armature is attracted by the permanent magnet and the friction between the armature and the iron core prevents the armature from rotating, thus achieving brake locking; S103, receiving a brake signal, the control circuit energizes the coil to activate the reverse magnetic field, the coil is energized to generate a reverse magnetic field, and interacts with the magnetic field of the permanent magnet; S104, the current increases, the magnetic field of the coil is enhanced to offset the magnetic field of the permanent magnet, and its adsorption force on the armature is weakened. The magnetic force is weakened, and the spring resets the magnet and rebounds; S105, after the armature is reset, the locking force is released, the armature is separated from the iron core, the brake shaft rotates freely, the system returns to the non-locking state, and the coil remains energized or automatically de-energized.

4. A tubular motor brake control method as claimed in claim 3, characterized in that: The brake flange in S102 tightly embraces the brake shaft, including: The armature is fixed to the other end of the brake shaft and has an armature on it for transmitting the braking force; the armature is connected to the brake flange through a spring and changes its position under the influence of an external magnetic field.

5. A tubular motor brake control method as claimed in claim 4, characterized in that: Also includes: The armature is attracted to the iron core by the permanent magnet, and the connected brake flange fits the brake shaft through friction or built-in mechanical structure, exerting a locking force to prevent the rotation of the brake shaft, so that the brake system enters a stable state of complete locking, ensuring the safe stationary state of the motor.

6. A tubular motor brake control method as claimed in claim 3, characterized in that: In S104, the current increases and the magnetic field strength generated in the coil increases. The increased magnetic field interacts with the magnetic field of the permanent magnet, causing the directions of the magnetic fields therebetween to become opposite and cancel each other out, thereby weakening the original attraction of the permanent magnet on the armature.

7. A tubular motor brake control method as claimed in claim 3, characterized in that: The S101 further includes: S201, optimize the elastic coefficient and stiffness of the spring to ensure stable resetting of the magnet and reduce the elastic gap; S202 uses low current and high efficiency coils, and high quality wires to reduce resistance and heat generation, achieving strong magnetic fields at low currents; S203, assemble brake system components, including armature, spring, brake flange, brake shaft, etc., to ensure that the matching accuracy and clearance control meet the design standards; S204, fully debug the brake system and test the braking performance and stability under multiple loads.

8. A tubular motor brake control method as claimed in claim 3, characterized in that: The step S104, coil magnetic field enhancement, comprises: S301, increase the number of coil turns to improve the electromagnetic induction intensity, and adjust the distance between turns to ensure uniform magnetic field distribution; S302, use staggered winding method to reduce electromagnetic interference; S303, replace ferromagnetic materials with higher magnetic permeability and lower resistivity to improve magnetic field strength and distribution uniformity; S304, designing an iron ring in the shape of a focusing ring to guide the magnetic field to focus and enhance, thereby increasing the intensity of the magnetic field in the target area; S305, adjusting the relative position and distance between the coil and the iron ring to optimize the coupling effect.

9. A tubular motor brake control method as claimed in claim 8, characterized in that: The S303 includes: The magnetic field strength is increased by using ferromagnetic materials with higher magnetic permeability and lower resistivity. These materials can more effectively concentrate and guide the magnetic field lines and reduce energy loss caused by the resistance of the material itself.

10. A tubular motor brake control method as claimed in claim 3, characterized in that: The method further comprises: S401, the encoder monitors the load change of the lifting equipment and the corresponding downward speed in real time, providing accurate data input; S402, the control system receives the speed data of the encoder, performs real-time analysis, and identifies the deviation between the current speed and the target speed; S403, based on the speed deviation, the control system calculates an appropriate circuit conduction timing to adjust the braking force to balance the load impact; S404, at the determined conduction timing, the control system accurately controls the conduction state of the relevant circuits and adjusts the electromagnetic field strength or the braking mechanism; S405, the change of the circuit conduction state directly affects the interaction force between the armature and the iron core, thereby dynamically adjusting the braking force during downward movement; S406, during the entire descending process, the control system continuously monitors the speed change and repeats steps S402 to S405 as needed to maintain the consistency of the lifting speed.

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