Magnetic lifting device suitable for special-shaped surface

Abstract

The utility model discloses a kind of magnetic hoists suitable for special-shaped surface, including Y direction longitudinal beam, several X direction cross beams mounted below it. Three lifting ring bolts are laterally equidistantly arranged below each X direction cross beam, and one permanent magnet jack is respectively hung and connected by equal length lifting chain. The permanent magnet jack of left and right two parts below cross beam, its holding surface is designed as convex curved surface;Permanent magnet jack in the middle, its holding surface is designed as concave curved surface. Through the flexible connection of equal length lifting chain, each permanent magnet jack can adapt to the wave crest (convex surface adaptation) and wave trough (concave surface adaptation) of the surface of special-shaped workpiece such as corrugated steel plate, significantly increase effective contact area, optimize magnetic force line penetration path. Multiple independent magnetic units synergistic effect, provide total adsorption force and adsorption stability far more than traditional plane magnetic hoist, effectively prevent workpiece from sliding, deflecting or falling off during hoisting, greatly improve operation safety and application range.

Description

Technical Field

[0001] This utility model relates to the field of magnetic lifting devices, and more specifically, to a magnetic lifting device suitable for irregular surfaces, particularly a magnetic lifting device capable of effectively adsorbing and safely lifting irregular, non-flat surfaces such as corrugated steel plates. Background Technology

[0002] Magnetic lifts utilize the strong magnetic force generated by electromagnets or permanent magnets to attract and lift ferromagnetic workpieces. Due to their ease of operation, high efficiency, and lack of damage to workpiece surfaces, they are widely used in industries such as steel, machinery manufacturing, shipbuilding, and logistics. However, traditional magnetic lifts (whether electromagnetic or permanent magnet type) are primarily designed for workpieces with large, flat surfaces (such as steel plates and billets). When encountering workpieces with irregular surfaces (such as curved surfaces, uneven surfaces, surfaces with holes or ribs, or the surface of casting blanks), especially when the planar magnetic poles of traditional magnetic lifts are used to attract workpieces such as corrugated steel plates, the following drawbacks exist:

[0003] 1. Small contact area and insufficient adsorption force: The magnetic pole surface is a rigid plane or fixed curved surface, which cannot fully fit with the surface of workpieces such as corrugated steel plates. This results in a significant reduction in the effective contact area, and the magnetic lines of force cannot effectively penetrate the workpiece. The resulting adsorption force is far lower than the rated value and cannot meet the lifting requirements.

[0004] 2. Unstable adsorption and easy to fall off: Due to insufficient contact and uneven magnetic force distribution, single magnetic lifting tools are prone to slipping, deflection or even sudden fall off of workpieces during lifting, which poses serious safety hazards.

[0005] Therefore, there is an urgent need to develop a magnetic lifting tool that can effectively adapt to surfaces such as corrugated steel plates and provide stable and reliable adsorption force to improve lifting safety, efficiency and applicability. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model provides a magnetic lifting device suitable for irregularly shaped surfaces.

[0007] This utility model is achieved through the following technical solution: a magnetic hoist suitable for irregular surfaces, including a Y-direction longitudinal beam, a hoisting seat fixedly installed on the top of the Y-direction longitudinal beam, several X-direction transverse beams fixedly installed on the lower surface of the Y-direction longitudinal beam, and three lifting eye bolts fixedly installed at equal intervals on the lower surface of the X-direction transverse beams. Each lifting eye bolt has one end of a lifting chain connected to its lifting eye, and the other end of the lifting chain is connected to a permanent magnet lifter. The permanent magnet lifter includes a permanent magnet lifter body and a handle. The handle is located on one side of the permanent magnet lifter body via a rotating shaft. The bottom surface of the permanent magnet lifter body is the holding surface. The permanent magnet lifters on the left and right sides below the X-direction transverse beams have convex curved surfaces for their holding surfaces, and the permanent magnet lifters in the middle below the X-direction transverse beams have concave curved surfaces for their holding surfaces.

[0008] As a preferred option, the rotating shaft is connected to the magnetic source inside the permanent magnet lifter body, and a limit block is provided on the outside of the permanent magnet lifter body corresponding to the handle. A concave arc ring is provided in the middle of the top of the limit block to cooperate with the top of the handle.

[0009] As a preferred option, each chain should be of equal length.

[0010] As a preferred option, the end of the handle is fitted with a non-slip rubber sleeve.

[0011] This invention, by employing the above technical solution, offers the following advantages compared to existing technologies: Multiple independent magnetic units, working together, can conform to the curved, uneven, and other irregular surfaces of the corrugated steel plate, significantly increasing the effective contact area. Multiple independent magnetic units greatly enhance adsorption force and safety; the total adsorption force is far superior to that of traditional magnetic suspension on the same workpiece, and the adsorption is more stable, greatly reducing the risk of workpiece detachment and improving operational safety.

[0012] Additional aspects and advantages of this invention will become apparent in the following description or may be learned by practice of this invention. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a front view structural diagram of the present utility model;

[0016] in, Figures 1 to 2 The correspondence between the reference numerals and components in the attached drawings is as follows:

[0017] 1. Y-direction longitudinal beam, 2. X-direction transverse beam, 3. Hanger, 4. Lifting eye bolt, 5. Lifting eye, 6. Lifting chain, 7. Permanent magnet lifter, 71. Permanent magnet lifter body, 72. Handle, 73. Rotary shaft, 74. Holding surface, 75. Limiting block, 76. Anti-slip rubber sleeve. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0020] The following is combined Figures 1 to 2 The present invention provides a detailed description of a magnetic sling applicable to irregularly shaped surfaces, based on an embodiment of the present invention.

[0021] like Figure 1 , Figure 2 As shown, this utility model is achieved through the following technical solution: a magnetic hoist suitable for irregular surfaces, including a Y-direction longitudinal beam 1, a lifting seat 3 fixedly installed on the top of the Y-direction longitudinal beam 1, several X-direction transverse beams 2 fixedly installed on the lower surface of the Y-direction longitudinal beam 1, and three lifting eye bolts 4 fixedly installed transversely at equal intervals on the lower surface of the X-direction transverse beams 2. Each lifting eye bolt 4 has a lifting eye 5 connected to one end of a lifting chain 6, and each lifting chain 6 has an equal length. The other end of the lifting chain 6 is connected to a permanent magnet lifter 7, which includes a permanent magnet lifter body 71 and a handle 72. The handle 72 is located on one side of the permanent magnet lifter body 71 via a rotating shaft 73. The bottom surface of the permanent magnet lifter body 71 is a holding surface 74. The holding surfaces 74 of the permanent magnet lifters 7 on the left and right sides below the X-direction transverse beams 2 are convex curved surfaces, while the holding surfaces 74 of the permanent magnet lifters 7 on the middle part below the X-direction transverse beams 2 are concave curved surfaces. The rotating shaft 73 is connected to the magnetic source inside the permanent magnet lifter body 71. A limiting block 75 is provided on the outside of the permanent magnet lifter body 71 corresponding to the handle 72. A concave arc ring is provided in the middle of the top of the limiting block 75 to cooperate with the top of the handle 72. The end of the handle 72 is fitted with an anti-slip rubber sleeve 76.

[0022] Working Process: The operator first moves the entire magnetic jack above the irregularly shaped workpiece (such as a corrugated steel plate) to be lifted. Based on the specific corrugated shape or uneven features of the workpiece surface, the position of the magnetic jack is adjusted to ensure that the raised curved surfaces on both sides naturally fall to the crests of the corrugations, while the concave curved surfaces in the middle fall to the troughs. Since the three permanent magnet lifters 7 are independently suspended below the X-direction beam 2 by equal-length chains 6, this flexible connection allows each permanent magnet lifter to adaptively adjust its posture under gravity, maximizing the contact area between its holding surface 74 and the uneven contours of the workpiece surface. Subsequently, the operator sequentially (or simultaneously) operates the handle 72 of each permanent magnet lifter. The handle 72 drives the magnetic source state inside the permanent magnet lifter body 71 via a rotating shaft 73, changing it from a "off" or "weak magnetic" state to a "strong magnetic" state. Pull the handle 72 until its top is firmly locked by the concave arc ring in the middle of the top of the outer limiting block 75. At this point, the magnetic source is in its maximum output state, ensuring that the magnetic force is locked in place. The anti-slip rubber sleeve 76 at the end of the handle 72 increases the friction during operation and prevents slippage. Once all permanent magnet lifters are activated and firmly attached to the workpiece surface, the lifting can be carried out by connecting the lifting point above the Y-direction longitudinal beam 1 (not shown in the figure, usually located at both ends or the middle of the longitudinal beam) via the hook or the main hook of the crane. During the lifting process, multiple independent magnetic units (permanent magnet lifters) work together, and each unit provides maximum local attraction force due to the good fit between its holding surface and the workpiece surface. At the same time, the design of the convex and concave curved surfaces optimizes the magnetic line path and enhances the magnetic penetration depth. This multi-point, adaptive, and powerful attraction method makes the total attraction force much higher than that of traditional planar magnetic lifting, and can effectively resist the slippage, deflection, or vibration that may occur during the lifting process, greatly reducing the risk of accidental workpiece drop and safely and reliably transporting irregularly shaped workpieces to the designated location. Upon reaching the destination, once the handle 72 is turned on again to disengage it from the locking of the limit block 75, the magnetic source state switches back to low magnetic or demagnetized state, the attraction force disappears, and the workpiece is safely released.

[0023] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A magnetic hoist suitable for irregular surfaces, comprising a Y-direction longitudinal beam (1), wherein a hoisting seat (3) is fixedly installed on the top of the Y-direction longitudinal beam (1), characterized in that... The lower surface of the Y-direction longitudinal beam (1) is fixedly installed with several X-direction transverse beams (2). The lower surface of the X-direction transverse beam (2) is fixedly installed with three eye bolts (4) at equal intervals. Each eye bolt (4) has a chain (6) connected to one end of its eye (5). The other end of the chain (6) is connected to a permanent magnet lifter (7). The permanent magnet lifter (7) includes a permanent magnet lifter body (71) and a handle (72). The handle (72) is located on one side of the permanent magnet lifter body (71) via a rotating shaft (73). The bottom surface of the permanent magnet lifter body (71) is a holding surface (74). The holding surfaces (74) of the permanent magnet lifters (7) on the left and right sides below the X-direction transverse beam (2) are raised curved surfaces. The holding surfaces (74) of the permanent magnet lifters (7) in the middle below the X-direction transverse beam (2) are concave curved surfaces.

2. A magnetic jack suitable for irregularly shaped surfaces according to claim 1, characterized in that... The rotating shaft (73) is connected to the magnetic source inside the permanent magnet lifter body (71). A limiting block (75) is provided on the outside of the permanent magnet lifter body (71) corresponding to the handle (72). A concave arc ring is provided in the middle of the top of the limiting block (75) to cooperate with the top of the handle (72).

3. A magnetic sling suitable for irregularly shaped surfaces according to claim 1, characterized in that... Each of the hanging chains (6) has the same length.

4. A magnetic sling suitable for irregularly shaped surfaces according to claim 1, characterized in that... The end of the handle (72) is fitted with an anti-slip rubber sleeve (76).

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