Magnetic lifting device

Abstract

The application discloses a magnetic lifting equipment, which comprises a rod body assembly, a magnetic attraction mechanism and a universal joint, wherein the magnetic attraction mechanism has a magnetic attraction force; the universal joint is connected with the rod body assembly and the magnetic attraction mechanism respectively, and the magnetic attraction mechanism can be deflected by a preset angle alpha (0 <= alpha <= 30) relative to the rod body assembly through the universal joint. The scheme of the application discards the traditional rope binding and manual hand guiding operation mode, directly adsorbs and fixes a metal lifting piece by using the magnetic attraction mechanism 20, realizes the lifting object posture constraint and direction guidance by relying on the magnetic lifting equipment itself, completely replaces the manual hand holding guiding action, does not need the personnel hand contact and intervention to the lifting object in the whole process, and completely eliminates the manual high-risk intervention link, thereby avoiding the personnel lifting injury risk from the root.

Description

Technical Field

[0001] This application belongs to the technical field of magnetic lifting equipment, and particularly relates to a magnetic lifting device. Background Technology

[0002] Currently, the industry commonly employs rope binding and manual alignment for lifting heavy metal workpieces. However, due to the common characteristics of metal workpieces on site, such as lack of lifting lugs, smooth surfaces, and irregular shapes, traditional rope binding methods are difficult to guarantee reliable fixation. This easily leads to loose bindings, center of gravity shifts, and other problems, causing the workpiece to sway and deflect in the air. To ensure a smooth landing and prevent workpiece collisions and displacement, on-site crane operators must manually support, pull, and stabilize the load at close range to correct its posture and control the landing point. This operation method is a typical example of high-risk human-machine interaction, where crane operators' hands and bodies are constantly under the load and in the hazardous working area. If the load slips, falls, or sways out of control, it can easily cause crushing, falling, and lifting injuries, failing to achieve inherent equipment safety and posing a significant long-term safety management hazard.

[0003] Meanwhile, existing conventional lifting fixtures are mostly rigid connection structures, lacking multi-angle adaptive fitting capabilities. They have poor adaptability to uneven or irregularly shaped metal surfaces and insufficient fixing stability, further increasing the probability of loss of control of the lifted parts' posture. This forces on-site operations to rely on manual intervention. Existing technologies cannot overcome the operational shortcoming of "manual support for stabilization," and cannot eliminate high-risk manual intervention at the equipment structure level. This makes it difficult to meet the inherent safety management requirements of modern factory lifting operations. Therefore, there is an urgent need to design a dedicated magnetic lifting fixture that can adaptively fit and eliminates the need for manual support to solve the above-mentioned technical defects. Summary of the Invention

[0004] This application aims to at least partially solve the technical problems of unstable component fixing, poor adaptability, and high risks of manual operation in traditional hoisting operations. To this end, this application provides a magnetic hoisting device.

[0005] In a first aspect, the present application provides a magnetic lifting device, which includes: a rod assembly, a magnetic mechanism, and a universal joint. The magnetic mechanism has magnetic attraction force. The universal joint connects the rod assembly and the magnetic mechanism respectively. The magnetic mechanism can be deflected by a preset angle α relative to the rod assembly through the universal joint, where 0≤α≤30°.

[0006] Optionally, the rod assembly includes a first rod, a second rod, and a positioning element. The first rod and the second rod are slidably connected relative to each other. The positioning element is used to fix the first rod and the second rod in place. The second rod is connected to a universal joint.

[0007] Optionally, the positioning element includes screws and multiple nuts. The first rod has multiple first positioning holes, the second rod has a second positioning hole, the nuts are set on the first rod and are corresponding to the first positioning holes, and the screws pass through the first positioning holes and the second positioning holes respectively and are threadedly connected to the nuts.

[0008] Optionally, the rod assembly includes a handle connected to the first rod, and the handle has a gripping hole.

[0009] Optionally, the universal joint includes a universal ball head, a universal seat, and fasteners. The universal ball head is connected to the rod assembly, and the universal seat is connected to the magnetic attraction mechanism via the fasteners. The universal ball head and the universal seat are connected in a ball cage-like universal joint.

[0010] Optionally, the magnetic attraction mechanism includes a magnetic circuit optimization partition and a magnetic attraction assembly, with fasteners passing through the symmetrical center of the magnetic circuit optimization partition and the magnetic attraction assembly located on the side of the magnetic circuit optimization partition away from the universal joint.

[0011] Optionally, the magnetic attraction assembly includes a plurality of first magnetic attractors and a plurality of second magnetic attractors. The plurality of first magnetic attractors are disposed on the magnetic circuit optimization partition with a first radius surrounding the fastener, and the plurality of second magnetic attractors are disposed on the magnetic circuit optimization partition with a second radius surrounding the fastener. The first radius is smaller than the second radius.

[0012] Optionally, the first magnetic element includes a first mounting base and a first magnet, the first mounting base being connected to a magnetic circuit optimization partition and partially surrounding the first magnet.

[0013] Optionally, the second magnetic element includes a second mounting base and a second magnet, the second mounting base being connected to the magnetic circuit optimization partition and partially surrounding the second magnet.

[0014] Optionally, the number of first magnets is two or three times the number of second magnets, and the spacing between adjacent first magnets is smaller than the spacing between adjacent second magnets.

[0015] The beneficial effects of this application are: Traditional rope-binding hoisting methods suffer from poor stability, making the suspended load prone to swaying, deflection, and displacement in the air. To ensure accurate positioning and stable placement, crane operators must manually reach out and pull the load to guide its direction and correct its posture. This prolonged exposure of personnel to the high-risk area beneath the load greatly increases the risk of crushing, impact injuries, and other crane-related accidents, failing to achieve inherent operational safety. This solution eliminates the traditional rope binding and manual guidance methods. It utilizes a magnetic mechanism to directly attach and secure metal loads, relying on the magnetic hoisting equipment itself to constrain the load's posture and guide its direction. This completely replaces manual hand support and guidance, eliminating the need for personnel to touch or intervene with the load throughout the entire process, thus eradicating the high-risk human intervention and fundamentally mitigating the risk of crane-related injuries. Meanwhile, the pole assembly, as the core load-bearing structure, can stably transmit the lifting force, ensuring balanced force distribution and reliable operation of the entire machine. The universal joint located between the pole assembly and the magnetic attraction mechanism allows the magnetic attraction mechanism to achieve three-dimensional adaptive deflection within the range of 0°≤α≤30°. It can adaptively conform to the surface contours of metal lifting parts without lifting lugs, with smooth, uneven, and irregular shapes, ensuring that the magnetic attraction mechanism and the lifting parts are fully and tightly fitted, and the adsorption and fixation are more stable. Combined with the small-angle adaptive adjustment capability, it can accurately adapt to complex working conditions, enabling the equipment to smoothly and accurately control the lifting direction and posture of the lifting parts, completely eliminating the dependence on manual guidance, truly realizing mechanized and unmanned high-risk intervention in lifting operations, achieving the goal of inherently safe operation, and fully complying with industrial safety production standards and lifting operation procedures. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the magnetic lifting equipment provided in this application; Figure 2 This is a cross-sectional schematic diagram of the magnetic attraction mechanism provided in this application; Figure 3 This is a bottom view of the magnetic attraction mechanism provided in this application; Figure label: 10. Rod assembly; 11. First rod; 12. Second rod; 13. Positioning element; 14. Screw; 15. Nut; 16. Handle; 20 Magnetic attraction mechanism; 21 Magnetic circuit optimization partition; 22 Magnetic attraction assembly; 23 Chain; 24 First mounting base; 25 First magnet; 26 Second mounting base; 27 Second magnet; 28 First magnetic chuck; 29 Second magnetic chuck; 30 Universal joint; 31 Universal ball joint; 32 Universal joint seat; 33 Fastener. Detailed Implementation

[0018] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described application is only a part of this application, not all of it. Based on the applications in this application, all other applications obtained by a person skilled in the art without inventive effort are within the scope of protection of this application.

[0019] It should be noted that all directional indications in this application are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0020] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, technical solutions from different applications can be combined, but only on the basis of being achievable by a person skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed in this application. This application is described below with reference to the accompanying drawings and specific applications: Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the magnetic lifting equipment provided in this application. Figure 2 This is a cross-sectional schematic diagram of the magnetic attraction mechanism 20 provided in this application. Figure 3 This is a bottom view of the magnetic attraction mechanism 20 provided in this application.

[0022] The magnetic lifting equipment disclosed in this embodiment is designed for safe lifting operations of various special metal lifting components. It consists of three core structures: a pole assembly 10, a magnetic suction mechanism 20, and a universal joint 30. These structures work together to complete stable and safe lifting operations. The pole assembly 10 is the main load-bearing structure of the equipment and serves as the docking and bearing component of the lifting equipment during lifting operations. It mainly transmits lifting tension, supports the overall equipment structure, and ensures the structural stability of the entire equipment during lifting. The magnetic suction mechanism 20 is the object adsorption and fixing component of the equipment. It possesses stable magnetic force and can achieve unbound adsorption and fixing of metal lifting components by relying on magnetic force, replacing the traditional rope binding method.

[0023] As a key connection and adjustment structure, the universal joint 30 is fixedly connected at both ends to the lower end of the rod assembly 10 and the upper end of the magnetic attraction mechanism 20, respectively, to achieve a flexible connection between the two. The magnetic attraction mechanism 20 can deflect relative to the rod assembly 10 based on the three-dimensional rotation characteristics of the universal joint 30. The deflection angle is preset to α, and the angle value range is controlled between 0°≤α≤30°. This angle limit range has been optimized for the operation scenario. It can not only meet the fitting and adjustment requirements of non-flat and irregular lifting surfaces, but also avoid the problem of equipment force imbalance and decreased adsorption stability caused by excessive deflection angle. Through small-angle three-dimensional adaptive adjustment, it can adapt to the lifting conditions of various irregular metal lifting parts.

[0024] This solution addresses the core pain points of existing metal hoisting operations, which rely on manual guidance and posture control of the hoisted object, resulting in high-risk human-machine cross-operation and the inability to achieve inherent safety. Through the coordinated structural design of the pole assembly 10, magnetic attraction mechanism 20, and universal joint 30, this solution completely replaces manual operation at the equipment structure level, solving the technical problems of high safety risks, poor adaptability to irregularly shaped hoisting parts, and difficulty in stabilizing the direction and posture of the hoisted object in traditional hoisting operations.

[0025] Traditional rope-binding hoisting methods suffer from poor stability, making the suspended load prone to swaying, deflection, and displacement in the air. To ensure accurate positioning and stable placement, crane operators must manually reach out and pull the load to guide its direction and correct its posture. This prolonged exposure of personnel to the high-risk area beneath the load greatly increases the risk of crushing, impact injuries, and other crane-related accidents, failing to achieve inherent operational safety. This solution eliminates the traditional rope binding and manual guidance methods. It utilizes a magnetic suction mechanism 20 to directly attach and secure the metal load. The magnetic hoisting equipment itself provides posture constraint and directional guidance, completely replacing manual hand support and guidance. The entire process requires no human contact or intervention with the load, eliminating high-risk human intervention and mitigating the risk of crane-related injuries at its source. Meanwhile, the pole assembly 10, as the core load-bearing structure, can stably transmit the lifting force, ensuring balanced force distribution and reliable operation of the entire machine. The universal joint 30 located between the pole assembly 10 and the magnetic attraction mechanism 20 allows the magnetic attraction mechanism 20 to achieve three-dimensional adaptive deflection within the range of 0°≤α≤30°. It can adaptively conform to the surface contour of metal lifting parts without lifting lugs, with smooth, uneven, and irregular shapes, ensuring that the magnetic attraction mechanism 20 and the lifting parts are fully and tightly fitted, and the adsorption and fixation are more stable. Combined with the small-angle adaptive adjustment capability, it can accurately adapt to complex working conditions, enabling the equipment to smoothly and accurately control the lifting direction and posture of the lifting parts, completely eliminating the dependence on manual guidance, truly realizing mechanized and unmanned high-risk intervention in lifting operations, achieving the goal of inherently safe operation, and fully complying with industrial safety production standards and lifting operation procedures.

[0026] The magnetic lifting equipment disclosed in this embodiment includes a pole assembly 10, a magnetic suction mechanism 20, and a universal joint 30. The pole assembly 10 is the core load-bearing and adjustable structure of the equipment, specifically comprising a first pole 11, a second pole 12, and a positioning component 13, and is a key structure adaptable to various lifting operations. The first pole 11 and the second pole 12 are connected by a relative sliding connection, allowing them to move relative to each other along the axial direction. This enables the overall length of the pole assembly 10 to be adjusted, allowing for flexible adjustment of the overall length of the equipment according to different actual working conditions such as the on-site lifting space, the height of the lifting component, and the operating distance. The end of the second pole 12 furthest from the first pole 11 is fixedly connected to the universal joint 30, which connects to the magnetic suction mechanism 20 below, ensuring that the pole assembly 10 can stably transmit lifting force. At the same time, the universal joint 30 enables the magnetic suction mechanism to achieve an adaptive deflection function from 200° to 30°. The positioning component 13, as a matching locking structure, is specifically used to fasten and fix the first rod 11 and the second rod 12 after they have been slidably adjusted to the preset working length, thereby limiting the relative sliding between the first rod 11 and the second rod 12. This allows the rod assembly 10 after telescopic adjustment to form an integrated rigid load-bearing structure, ensuring that the rod length remains constant during the hoisting operation and providing a stable load-bearing foundation for the overall hoisting operation.

[0027] This technical solution addresses the technical problems of fixed pole length, poor adaptability to working conditions, and significant operational limitations of traditional magnetic lifting fixtures by optimizing the telescopic adjustable and positioning locking structure of the pole assembly 10. Furthermore, combined with the existing magnetic adsorption and 30° universal joint adjustment structure of the equipment, it significantly improves the practicality and safety of lifting operations. Traditional magnetic lifting equipment typically features a fixed, one-piece pole structure with no length adjustment. This makes it unsuitable for diverse operating scenarios, including varying working heights, narrow or open lifting spaces, and different specifications of metal components. Its poor versatility easily leads to inconvenience in lifting operations and positioning difficulties, severely impacting work efficiency. Insufficient adaptability can also indirectly cause positioning deviations of the lifted components, increasing operational safety hazards.

[0028] This solution employs a telescopic structure with sliding engagement between the first rod 11 and the second rod 12, allowing for adjustment of the overall length of the rod assembly 10 as needed. This flexibly adapts to various lifting spaces and working conditions, breaking the limitations of traditional fixed rods and greatly enhancing the equipment's versatility. Simultaneously, a positioning component 13 is installed to lock and fix the telescopic double-rod structure, effectively preventing the rods from sliding or shifting length during lifting, ensuring the load-bearing stability and structural rigidity of the rod assembly 10. Combined with the universal joint's 30±30° adaptive fitting structure and the magnetic attraction mechanism 20's non-binding adsorption advantage, this solution not only continuously addresses the risks of component detachment and lifting injuries caused by traditional manual traction and rope binding, but also compensates for the structural defects of traditional tooling with non-adjustable lengths. This further enhances the stability, adaptability, and safety of lifting operations, meeting the standardized and safe lifting operation requirements for metal components in various complex scenarios.

[0029] This solution specifies the positioning component 13 and its supporting positioning structure. The positioning component 13 includes screws 14 and multiple nuts 15. The first rod 11 has multiple first positioning holes arranged along its length. The second rod 12 has a second positioning hole that can be aligned with any of the first positioning holes. The multiple nuts 15 are fixedly installed at each of the first positioning holes on the first rod 11 and correspond one-to-one with the first positioning holes. After the first rod 11 and the second rod 12 are slidably adjusted to the required working length, the second positioning hole of the second rod 12 is aligned with the corresponding first positioning hole on the first rod 11. The screws 14 then pass through the first positioning hole and the second positioning hole in sequence, and finally form a threaded locking connection with the corresponding nuts 15. The fastening structure of the screws 14 and nuts 15 locks the relative sliding of the first rod 11 and the second rod 12, thereby achieving precise and reliable fixing of the telescopic length of the rod assembly 10 and completing the adjustable positioning assembly of the rod length.

[0030] This technical solution effectively solves the technical problems of existing telescopic lifting booms, such as limited positioning positions, poor adjustment flexibility, low positioning and locking reliability, and easy loosening and movement during operation, by adopting a positioning structure with multiple positioning holes and threaded screws 14 and nuts 15. This significantly improves the adaptability and operational stability of magnetic lifting equipment. Traditional telescopic positioning structures for lifting booms mostly use single-hole pin positioning, which can only achieve a limited number of fixed length adjustments. This cannot adapt to the diverse and precise lifting distance and working space requirements on site. Furthermore, the pin is a clearance fit structure, which is prone to loosening or even falling off under lifting stress, equipment shaking, and vibration conditions, causing boom length deviation, overall structural instability, and affecting lifting safety.

[0031] This solution, by setting multiple first positioning holes in the first rod 11, can form multi-position alignment with the second positioning holes in the second rod 12. The telescopic length of the rod assembly 10 can be flexibly adjusted and locked according to actual operation requirements, greatly improving the equipment's adaptability and adjustment flexibility. At the same time, the threaded connection positioning method of screws 14 and nuts 15 is adopted. The self-locking performance of the thread structure eliminates the defects of traditional pin clearance fit, effectively preventing the positioning structure from loosening or failing and the relative movement of the rods during the hoisting operation. It stably maintains the overall structural strength and dimensional accuracy of the rod assembly 10, ensuring uniform force and structural stability during the hoisting process, thereby effectively improving the stability and safety of the overall hoisting operation and adapting to more complex hoisting conditions.

[0032] In this embodiment, the pole assembly 10 of the magnetic hoisting equipment is equipped with a handle 16 structure for auxiliary operation. The handle 16 is fixedly connected to the first pole 11 and serves as a manual gripping component for the equipment, suitable for manual alignment, fine-tuning, and traction operations during hoisting. The handle 16 adopts a ring-shaped closed anti-slip structure design, which has strong overall structure and uniform force distribution. At the same time, the surface of the handle 16 is treated with a frosted anti-slip process, which greatly improves the friction coefficient of the handle 16 surface. In addition, the handle 16 has a through-hole gripping hole, which allows the operator to grip and apply force to the handle 16 by inserting their hand through the gripping hole. Combined with the ring-shaped closed structure and the frosted anti-slip surface, multiple gripping limits and anti-slip structures are formed, allowing the operator to hold the handle 16 stably and reliably and apply traction force, ensuring uniform force application and stable force distribution during operation. It can effectively transmit stable traction torque and is suitable for various manual auxiliary operation conditions during magnetic hoisting operations.

[0033] This technical solution effectively solves the technical problems of poor grip, insufficient friction, easy slippage, and unstable force application of traditional lifting equipment handles 16 by setting an annular frosted anti-slip handle 16 with gripping holes in the rod assembly 10. This significantly improves the convenience and safety of manual operation of the equipment. Traditional magnetic lifting equipment mostly adopts a smooth straight rod simple grip structure without a dedicated anti-slip and limiting grip structure. The surface friction is low, and when operators operate in complex working environments such as oil and dust, their hands are very easy to slip, making it difficult to apply force stably and accurately transmit traction torque. This can easily lead to operational errors and equipment shaking and displacement, which not only affects the positioning accuracy of the lifting but also increases the safety hazards of unstable adsorption and displacement of the lifted parts.

[0034] This solution adopts a ring-shaped closed handle 16 structure, which can effectively prevent hand slippage compared to an open handle 16, resulting in higher grip reliability. The frosted anti-slip treatment on the surface of the handle 16 further enhances the contact friction between the hand and the handle 16, making it suitable for complex workshop operating environments. Combined with the grip holes on the handle 16, it can limit the operator's hand, further improving grip stability, enabling the operator to continuously and stably apply operating traction force, accurately transmit traction torque, eliminate the problems of slippage and force failure, effectively improve the accuracy and stability of lifting auxiliary operations, avoid lifting safety hazards caused by slippage and equipment shaking, optimize the human-machine operation performance of the equipment, and adapt to various industrial lifting operation scenarios.

[0035] The magnetic lifting device in this embodiment includes a universal joint 30 structure for adaptive angle adjustment. The universal joint 30 includes a universal ball joint 31, a universal seat 32, and a fastener 33, realizing a flexible and deflectable connection between the rod assembly 10 and the magnetic suction mechanism 20. The universal ball joint 31 is fixedly connected to the rod assembly 10, serving as the upper connecting base of the universal joint 30, and can maintain the same position and force state as the rod assembly 10. The universal joint 32 is detachably and fixedly connected to the upper surface of the magnetic attraction mechanism 20 by fasteners 33, realizing a stable assembly of the universal joint 30 and the magnetic attraction mechanism 20, and facilitating disassembly and maintenance. The universal ball joint 31 and the universal joint 32 adopt a ball cage universal connection structure, which allows the universal ball joint 31 to rotate and swing freely in multiple directions and angles inside the universal joint 32. This allows the magnetic attraction mechanism 20 to achieve a preset angle deflection of 0° to 30° relative to the rod assembly 10 by relying on the ball cage mating structure. This enables it to adaptively match the surface of different shaped lifting parts during hoisting operations, ensuring that the adsorption surface of the magnetic attraction mechanism 20 can actively adapt to the shape contour of the lifting part.

[0036] This technical solution effectively solves the technical problems of low angle adjustment freedom, poor adaptability, weak connection firmness, and inconvenient assembly and disassembly in traditional hoisting connection structures by adopting a ball-cage type universal joint 30 structure composed of a universal ball head 31, a universal seat 32, and fasteners 33. It significantly improves the working condition adaptability and structural reliability of magnetic hoisting equipment. The transition structure of traditional hoisting equipment is mostly a hinged, single-axis rotation structure, which can only achieve fine-tuning of the angle in one direction. It cannot adapt to the irregular and uneven surface of metal hoisting parts in three-dimensional space, which can easily cause insufficient contact between the magnetic surface and the hoisting part, resulting in local suspension. This leads to uneven adsorption force, poor hoisting stability, and the overall replacement cost is high and maintenance is inconvenient after the integrated transition structure is damaged.

[0037] This solution adopts a ball cage universal connection method, which has the ability to self-adapt to multiple angles in three-dimensional space. It can fully adapt to irregular, curved, and inclined surfaces of lifting parts, so that the magnetic attraction mechanism 20 can completely fit the surface of the lifting part, ensuring the maximum magnetic attraction area and effectively improving the attraction tightness and lifting stability. At the same time, the universal seat 32 is detachably connected to the magnetic attraction mechanism 20 through fasteners 33. Compared with the integrated structure, it is easier to inspect, replace and maintain parts in the future, reducing equipment operation and maintenance costs. The overall structure has uniform stress and strong load-bearing capacity, which can effectively avoid the problems of jamming, deformation and failure of the angle adjustment structure, further ensuring the stability and safety of lifting operations under complex working conditions.

[0038] The magnetic suction mechanism 20 of the magnetic suction hoisting equipment in this embodiment includes two major functional components: a magnetic circuit optimization partition 21 and a magnetic suction assembly 22. It is used to achieve stable magnetic suction and fixation of metal lifting parts. The magnetic suction mechanism 20 is connected to the rod assembly 10 through a universal joint 30 and can complete multi-angle adaptive deflection and bonding operations with the universal joint 30. Among them, the magnetic circuit optimization partition 21 is the core load-bearing and magnetic circuit control structure of the magnetic attraction mechanism 20. The fastener 33 is set through the symmetrical center of the magnetic circuit optimization partition 21, so that the magnetic circuit optimization partition 21 can be centrally fixed to the universal joint 32 above through the fastener 33, ensuring the symmetry and uniform force of the overall assembly structure. The magnetic attraction component 22 is correspondingly assembled on the side of the magnetic circuit optimization partition 21 away from the universal joint 30, that is, the magnetic circuit optimization partition 21 is set between the universal joint 30 and the magnetic attraction component 22. This assembly structure can optimize and adjust the magnetic field distribution of the magnetic attraction component 22 through the magnetic circuit optimization partition 21. At the same time, the magnetic circuit optimization partition 21 can bear the force of the upper connecting structure, provide a stable installation benchmark for the lower magnetic attraction component 22, ensure that the installation position of the magnetic attraction component 22 is regular and the force is balanced, and ensure that the magnetic attraction component 22 can smoothly adhere to the surface of the lifting part and output a stable magnetic attraction force.

[0039] This technical solution effectively solves the technical problems of scattered magnetic field distribution, large magnetic force loss, uneven force on the magnetic component 22, and poor adsorption stability in traditional magnetic hoisting equipment by adding a magnetic circuit optimization partition 21 and limiting the assembly position relationship of the magnetic circuit optimization partition 21, the magnetic attraction component 22, and the fastener 33. This significantly improves the magnetic attraction utilization rate and hoisting operation stability of the equipment. In traditional magnetic hoisting equipment, the magnetic component 22 is often directly assembled with the adapter structure, lacking a magnetic circuit optimization structure. During operation, the magnetic field is prone to outward dispersion and magnetic circuit disorder, resulting in serious loss of effective magnetic attraction force and low magnetic attraction utilization rate. In addition, the magnetic component 22 has poor centering positioning effect and is prone to force deviation. Under working conditions where the surface of the hoisting part is uneven and the force is uneven, it is very easy to have local incomplete adsorption and excessive force deviation, which may cause safety hazards such as the hoisting part shifting, shaking, or even falling off.

[0040] This solution places the fastener 33 through the symmetrical center of the magnetic circuit optimization partition 21, achieving symmetrical assembly of the magnetic attraction mechanism 20 in the center, ensuring that the lifting force axis coincides, and eliminating the attraction offset problem caused by eccentric force. At the same time, by setting the magnetic circuit optimization partition 21 between the magnetic attraction component 22 and the universal joint 30, the magnetic field direction of the magnetic attraction component 22 can be effectively regulated and concentrated, reducing ineffective magnetic field divergence and magnetic energy loss, improving the effective attraction magnetic force of the magnetic attraction component 22, and enhancing the adhesion and attraction force between the magnetic attraction surface and the lifting part. In addition, the magnetic circuit optimization partition 21 can buffer and evenly distribute the upper lifting tension, avoiding structural damage caused by local stress concentration in the magnetic attraction component 22, effectively improving the structural stability and magnetic attraction efficiency of the magnetic attraction mechanism 20, and further ensuring the stability and safety of the lifting process of various irregular and non-flat metal lifting parts.

[0041] In this solution, the magnetic suction component 22 is also equipped with a protective chain. The two ends of the chain are respectively connected to the magnetic circuit optimization partition 21 and the rod component 10, so that the chain is erected between the rod component 10 and the magnetic suction mechanism 20, forming a parallel structure with the universal joint 30 in the middle. Under normal lifting conditions, the chain is in an adaptive slack or slightly tensioned state, without interfering with the angle adjustment function of the universal joint 30, which can ensure the normal adaptive fitting lifting operation of the equipment. At the same time, it can bear the lifting load when the universal joint 30 breaks or fails, forming a secondary protection structure.

[0042] This technical solution addresses the shortcomings of traditional magnetic lifting equipment by adding a chain structure to the connecting rod assembly 10 and the magnetic circuit optimization partition 21. This solution specifically solves the problems of traditional magnetic lifting equipment relying solely on the universal joint 30 for load transmission, the direct fall of the lifted parts after the universal joint 30 breaks, and the lack of secondary protection. It significantly improves the fault tolerance and safety redundancy of lifting operations. In traditional magnetic lifting equipment, the magnetic suction mechanism 20 relies entirely on the universal joint 30 for connection and load bearing. The universal joint 30 is the only force transmission and connection structure. Under long-term heavy-load lifting, repeated angle adjustments, and fatigue stress, it is prone to cracking, breakage, or connection failure. Once the universal joint 30 fails, the magnetic suction mechanism 20 and the fixed lifted parts will fall directly, causing serious safety accidents such as equipment damage, workpiece falling, and personal injury. The overall safety of the equipment is extremely poor.

[0043] This solution uses a chain connected in parallel to the outside of the universal joint 30 to form a double-connection protection structure. Under normal operating conditions, it does not affect the three-dimensional deflection adjustment of the universal joint 30 or the normal lifting function of the equipment, ensuring that the original advantages of the equipment's self-adaptive fit and stable magnetic attraction are not affected. When the universal joint 30 breaks, detaches, or fails unexpectedly, the chain can instantly bear the overall lifting load, continuously connecting the rod assembly 10 with the magnetic attraction mechanism 20 and the lifting parts below, effectively restraining the falling and swaying of the lifting parts, achieving secondary safety protection, fundamentally eliminating accidents caused by the failure of the universal joint 30 structure, greatly improving the operational safety factor and structural reliability of the magnetic lifting equipment, and adapting to long-term heavy-load and high-frequency industrial lifting conditions.

[0044] In this embodiment, the magnetic suction assembly 22 of the magnetic lifting equipment is mounted on the side of the magnetic circuit optimization partition 21 away from the universal joint 30, and is used to provide a stable magnetic attraction force for lifting operations. The magnetic suction assembly 22 specifically includes multiple first magnetic suction elements 28 and multiple second magnetic suction elements 29. Both types of magnetic suction elements are fixedly installed on the magnetic circuit optimization partition 21 in a ring arrangement around the fastener 33. Among them, the multiple first magnetic suction elements 28 are evenly arranged in a ring around the fastener 33 located at the symmetrical center of the magnetic circuit optimization partition 21 with a preset first radius as the surrounding radius, forming an inner magnetic suction area.

[0045] Multiple second magnetic attractors 29, with a second radius greater than the first radius, are also arranged evenly in a ring around the fastener 33, forming an outer magnetic attraction area. This ensures that the first magnetic attractor 28 is entirely within the ring-shaped enclosure of the second magnetic attractors 29, forming a double-layered, concentrically arranged magnetic attraction structure on the end face of the magnetic circuit optimization partition 21. This concentric ring arrangement, with the central fastener 33 as the reference for positioning, ensures the symmetry and regularity of the overall assembly of the magnetic attraction assembly 22. This allows the force and magnetic force distribution of the magnetic attraction structure to be evenly distributed with reference to the central axis. Combined with the magnetic circuit regularization effect of the magnetic circuit optimization partition 21, this achieves full coverage of the magnetic attraction area and stable output of magnetic attraction force.

[0046] This technical solution effectively solves the technical problems of uneven magnetic attraction area distribution, weak central magnetic attraction, insufficient edge attraction, and poor stability when fitting irregularly shaped lifting parts in traditional magnetic components 22 by setting up a structure with inner and outer double-layered annular arrangement of first magnetic attraction element 28 and second magnetic attraction element 29, combined with different annular arrangement radii. It significantly improves the magnetic attraction uniformity and overall adsorption load-bearing capacity of magnetic attraction mechanism 20. Traditional lifting magnetic attraction components 22 mostly adopt a single-ring magnetic attraction element arrangement or disordered arrangement structure, which is prone to problems such as magnetic force concentration at the center of magnetic attraction, severe magnetic force attenuation at the edges, and uneven overall magnetic force distribution. When facing non-flat, curved, and irregular metal lifting parts, it is easy to have local adsorption gaps and uneven force, resulting in shaking and displacement of the lifting parts during the lifting process, posing a safety hazard of falling off.

[0047] This solution adopts a double-layer concentric ring structure with the first magnetic suction component 28 arranged on the inner side of the first radius and the second magnetic suction component 29 arranged on the outer side of the second radius. This structure can fully cover the central and edge areas of the magnetic suction adsorption end face, making up for the deficiency of insufficient magnetic force at the center or edge of the single-ring magnetic suction structure. This makes the magnetic force distribution of the entire magnetic suction working surface more uniform and full. At the same time, the concentric ring symmetrical arrangement structure can ensure uniform force during hoisting and adsorption, avoid the tilting and displacement of the hoisted parts caused by eccentric magnetic suction, and greatly improve the adhesion and adsorption effect of the magnetic suction mechanism 20 with various irregular and non-flat hoisted parts. This effectively improves the overall magnetic suction load-bearing capacity and adsorption stability, further ensuring the stability and safety of the hoisting operation process, and adapting to more complex working conditions for metal workpiece hoisting operations.

[0048] In this embodiment, the magnetic attraction assembly 22 is disposed on the side of the magnetic circuit optimization partition 21 away from the universal joint 30. It mainly consists of multiple first magnetic attraction elements 28 and multiple second magnetic attraction elements 29. Both types of magnetic attraction elements are arranged in a ring around the fastener 33, which is symmetrically disposed at the center of the magnetic circuit optimization partition 21. Among them, the multiple first magnetic attraction elements 28 are arranged around the fastener 33 with a first radius to form an inner magnetic attraction ring layer, and the multiple second magnetic attraction elements 29 are arranged around the fastener 33 with a second radius greater than the first radius to form an outer magnetic attraction ring layer, thereby constituting a double-layer concentric magnetic attraction layout. This scheme further limits the layout parameters of the two types of magnetic components. The number of the first magnetic components 28 is two or three times the number of the second magnetic components 29. On the basis of uniform arrangement, the distance between two adjacent first magnetic components 28 is smaller than the distance between two adjacent second magnetic components 29. This makes the layout density of the inner first magnetic components 28 significantly higher than the layout density of the outer second magnetic components 29, forming a differentiated magnetic arrangement structure with a dense center and a sparse periphery. The overall structure is based on the central fastener 33 as the symmetrical reference, with regular assembly and symmetrical structure, ensuring the stability and standardization of the installation structure of the magnetic component 22.

[0049] This technical solution effectively solves the technical problems of unreasonable magnetic force distribution, insufficient load-bearing capacity at the lifting center, and poor overall adsorption uniformity in traditional magnetic structures by adopting an inner and outer double-layer concentric magnetic attraction structure and limiting the quantity ratio and arrangement spacing of the first magnetic attraction component 28 and the second magnetic attraction component 29. This effectively improves the stability and reliability of magnetic lifting operations. Traditional magnetic lifting structures often use a uniform density arrangement of magnetic attraction components, with the number and spacing of the inner and outer layers of magnetic attraction components being consistent. This lack of targeted design based on the characteristics of the concentrated force at the lifting center results in insufficient magnetic flux at the center of the magnetic attraction working surface, which cannot meet the demand for high load-bearing capacity at the center during lifting. This easily leads to incomplete central adsorption, insufficient load-bearing capacity, and redundant magnetic force at the edges, resulting in wasted magnetic energy and poor lifting stability.

[0050] This solution increases the number of inner first magnetic suction components 28 by two or three times that of outer second magnetic suction components 29, and reduces the spacing between the inner magnetic suction components. This results in a higher density and greater magnetic flux of magnetic suction components in the central area of ​​the magnetic suction working surface, which can specifically strengthen the magnetic attraction force in the core force-bearing area of ​​the hoisting center and accurately match the force characteristics of the concentrated load-bearing center of the hoisting operation. At the same time, the outer second magnetic suction components 29 with a large spacing can supplement the attraction force in the edge magnetic suction area, making the overall magnetic force distribution conform to the hoisting force law. This not only avoids the problem of swaying and falling of the hoisted parts caused by insufficient central magnetic attraction, but also optimizes the overall magnetic energy utilization rate, greatly improves the overall attraction strength and uniformity of the magnetic suction mechanism 20, effectively adapts to the stable hoisting operation of various metal hoisted parts, and improves the safety and adaptability of the operation.

[0051] The side of the magnetic circuit optimization partition 21 away from the universal joint 30 mainly consists of multiple first magnetic components 28 and multiple second magnetic components 29. Both types of magnetic components are arranged in a ring around the fastener 33, which passes through the symmetrical center of the magnetic circuit optimization partition 21, forming an inner magnetic ring layer and an outer magnetic ring layer, respectively. Each first magnetic component 28 is equipped with a first mounting base 24 and a first magnet 25. The first mounting base 24 is fixedly assembled to the surface of the magnetic circuit optimization partition 21, and the first mounting base 24 adopts a semi-enclosed structure to cover a portion of the outer wall of the first magnet 25, thereby limiting, fixing, and protecting the first magnet 25. Correspondingly, each second magnetic component 29 includes a second mounting base 26 and a second magnet 27. The second mounting base 26 is fixedly connected to the surface of the magnetic circuit optimization partition 21, and also adopts a semi-enclosed structure to cover a portion of the outer wall of the second magnet 27, thereby completing the positioning and installation of the second magnet 27. The semi-enclosed assembly structure of the first mounting base 24 and the second mounting base 26 can respectively form a stable limiting position for the first magnet 25 and the second magnet 27 in the magnetic attraction hoisting equipment embodiment. This technical solution effectively solves the technical problems of traditional magnetic hoisting equipment, such as simple magnet installation and fixing methods, poor limiting effect, easy loosening and displacement, easy damage from impacts, and easy obstruction of the magnetic working surface, by configuring corresponding first mounting bases 24 and second mounting bases 26 for the first magnet 25 and the second magnet 27 respectively, and adopting a semi-enclosed covering installation structure. This significantly improves the structural stability and magnetic operation reliability of the magnetic assembly 22. Traditional magnetic structures mostly use glue or simple bonding fixing methods. The magnets lack dedicated limiting structures. Under the conditions of vibration during hoisting operations, workpiece impacts, and repeated contact and friction, magnets are prone to displacement, loosening, or even falling off, affecting magnetic accuracy and hoisting safety. Although some fully enclosed installation structures are firmly fixed, they will cover a large area of ​​the magnet working surface, causing magnetic force loss and decreased adsorption efficiency.

[0052] This solution adopts a semi-enclosed installation method with the mounting base. On the one hand, it can form a reliable lateral limit and fixed constraint on the first magnet 25 and the second magnet 27, which greatly improves the installation firmness of the magnets and effectively resists vibration, friction and external impact during operation, preventing the magnets from shifting, falling off and being damaged, and extending the service life of the magnetic attraction component 22. On the other hand, the semi-enclosed structure only covers the non-adsorption side of the magnet, completely preserving the magnet's adsorption working surface, without blocking or losing the magnetic field, ensuring that the magnetic attraction force of the magnet is fully released. While improving the stability of the structural installation, it maximizes the adsorption performance of the magnetic attraction component 22, effectively improving the overall hoisting stability and working condition adaptability of the equipment.

[0053] In the description of this specification, the references to terms such as "an application," "some applications," "example," "specific example," or "some examples," etc., mean that a specific feature, structure, material, or characteristic described in connection with that application or example is included in at least one application or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same application or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more applications or examples. Moreover, those skilled in the art can combine and integrate the different applications or examples described in this specification.

[0054] Furthermore, the technical solutions of each application can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0055] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetic lifting device, characterized in that, include: Rod assembly; The magnetic attraction mechanism has magnetic attraction force; Universal joints connect the rod assembly and the magnetic attraction mechanism. The magnetic attraction mechanism can deflect the universal joint relative to the rod assembly by a preset angle α, where 0≤α≤30°.

2. The magnetic lifting equipment according to claim 1, characterized in that, The rod assembly includes a first rod, a second rod, and a positioning element. The first rod and the second rod are slidably connected relative to each other. The positioning element is used to fix the first rod and the second rod together. The second rod is connected to the universal joint.

3. The magnetic lifting equipment according to claim 2, characterized in that, The positioning component includes screws and multiple nuts. The first rod has multiple first positioning holes, the second rod has a second positioning hole, the nut is disposed on the first rod and is disposed corresponding to the first positioning hole, and the screw passes through the first positioning hole and the second positioning hole respectively and is threadedly connected to the nut.

4. The magnetic lifting equipment according to claim 2, characterized in that, The rod assembly includes a handle, which is connected to the first rod, and the handle has a gripping hole.

5. The magnetic lifting equipment according to claim 1, characterized in that, The universal joint includes a universal ball head, a universal seat, and fasteners. The universal ball head is connected to the rod assembly, and the universal seat is connected to the magnetic attraction mechanism through the fasteners. The universal ball head and the universal seat are connected in a ball cage-like universal joint.

6. The magnetic lifting equipment according to claim 5, characterized in that, The magnetic attraction mechanism includes a magnetic circuit optimization partition and a magnetic attraction component. The fastener passes through the symmetrical center of the magnetic circuit optimization partition, and the magnetic attraction component is located on the side of the magnetic circuit optimization partition away from the universal joint.

7. The magnetic lifting equipment according to claim 6, characterized in that, The magnetic attraction assembly includes a plurality of first magnetic attractors and a plurality of second magnetic attractors. The plurality of first magnetic attractors are disposed on the magnetic circuit optimization partition around the fastener with a first radius, and the plurality of second magnetic attractors are disposed on the magnetic circuit optimization partition around the fastener with a second radius. The first radius is smaller than the second radius.

8. The magnetic lifting equipment according to claim 7, characterized in that, The first magnetic attractor includes a first mounting base and a first magnet. The first mounting base is connected to the magnetic circuit optimization partition and partially surrounds the first magnet.

9. The magnetic lifting equipment according to claim 7, characterized in that, The second magnetic element includes a second mounting base and a second magnet. The second mounting base is connected to the magnetic circuit optimization partition and partially surrounds the second magnet.

10. The magnetic lifting equipment according to claim 6, characterized in that, The magnetic attraction assembly also includes a chain, which is connected to the magnetic circuit optimization partition and the rod assembly respectively.

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