Special lifting equipment for permanent magnet and use method

Abstract

The invention relates to the field of permanent magnet hoisting equipment, in particular to hoisting equipment special for a permanent magnet and a using method. According to the hoisting equipment special for the permanent magnets, a mounting frame is connected between a telescopic arm of a movable frame and a hoisting winch through a hoisting rope, a lifting hook for hoisting a permanent magnet packaging group is connected to the mounting frame through a movable arm, and a shielding ring layer is arranged on the movable frame; a plurality of permanent magnet packaging groups are stacked in the box body through a diamagnetic supporting plate for transfer, the magnetic influence of the permanent magnet packaging groups on the outside is weakened by a shielding ring layer, an insulating ring layer is further arranged, and the insulating ring layer can be matched with the shielding ring layer to further weaken the magnetic influence of the permanent magnet packaging groups on the outside. Therefore, potential safety hazards caused by a high-intensity magnetic field generated by overlapped hoisting of a plurality of permanent magnet packaging groups are effectively overcome.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet lifting equipment, and more particularly to a special lifting and hoisting equipment for permanent magnets and its usage method. Background Technology

[0002] When multiple permanent magnets are packaged into a single permanent magnet assembly, the overall weight of the assembly is considerable, making it difficult for workers to move. Therefore, lifting equipment is needed to transport the assembly. However, due to the strong overall magnetic force of the assembly, it easily generates a significant magnetic influence on the external environment during lifting, causing considerable interference with the lifting operation. This is especially true when multiple permanent magnet assemblies are lifted simultaneously, as their overlapping creates an even stronger magnetic influence, posing a significant safety hazard when lifting multiple assemblies at the same time. Summary of the Invention

[0003] To overcome the drawback of generating strong magnetic forces and posing significant safety hazards when multiple permanent magnets are stacked and overlapped for lifting and hoisting operations, this invention provides a dedicated lifting and hoisting device for permanent magnets and a method for using it.

[0004] This invention discloses a special lifting and hoisting device for permanent magnets, comprising a mobile frame, a support rod, a telescopic boom, a hoisting winch, a hoisting rope, a mounting frame, a movable arm, a tension spring, a hook, a magnetic shielding base plate, a magnetic shielding support plate, a U-shaped insulating plate, an antimagnetic support plate, and a magnetic shielding side plate; the support rod is fixedly connected to the mobile frame; the telescopic boom is mounted on the support rod; the hoisting winch is mounted on the support rod; the hoisting rope is wound around the hoisting winch; the release end of the hoisting rope is supported on the pulley block of the telescopic boom, and the release end of the hoisting rope is fixedly connected to the mounting frame; Two movable arms are slidably connected to the front and rear sides of the mounting frame; tension springs are fixed between the movable arms and the mounting frame; a hook is fixed to each movable arm; a magnetic shielding base plate is fixed to the mobile frame; two magnetic shielding support plates are provided on the magnetic shielding base plate; several U-shaped insulating plates are provided on the magnetic shielding support plates; antimagnetic support plates are slidably connected to the U-shaped insulating plates; a magnetic shielding side plate is connected between the front sides of the two magnetic shielding support plates; a magnetic shielding side plate is also connected between the rear sides of the two magnetic shielding support plates.

[0005] More preferably, a connecting rod is fixedly connected between two adjacent movable arms on the left and right sides.

[0006] More preferably, a side caster is fixed to the hook located on the rear side.

[0007] More preferably, both magnetic shielding support plates are slidably connected to the magnetic shielding base plate; the magnetic shielding base plate has several positioning hole structures; each of the two magnetic shielding support plates has several mounting hole structures corresponding to the positioning holes; the magnetic shielding side plate is composed of a magnetic shielding fixed plate and a magnetic shielding movable plate; the magnetic shielding support plate on the left is fixedly connected to the magnetic shielding movable plate; the magnetic shielding support plate on the right is fixedly connected to the magnetic shielding fixed plate; the magnetic shielding movable plate is slidably connected to the magnetic shielding fixed plate.

[0008] More preferably, a folded insulating plate is fixedly connected between the front sides of the two magnetic shielding support plates; a folded insulating plate is also fixedly connected between the rear sides of the two magnetic shielding support plates; the two folded insulating plates are located between the two magnetic shielding side plates.

[0009] More preferably, a fixed insulating plate is fixedly connected between two adjacent U-shaped insulating plates.

[0010] More preferably, an electromagnet is installed at the bottom of the mounting bracket.

[0011] More preferably, each of the two magnetic shielding side plates has two slot structures adapted to the hook structure.

[0012] More preferably, an iron plate is fixedly connected to the antimagnetic support plate; a compression spring is fixedly connected between the antimagnetic support plate and the corresponding magnetic shielding support plate.

[0013] A method for using a special lifting and hoisting equipment for permanent magnets includes the following steps: First, the hoisting winch controls the hoisting rope to drive the hook on the mounting frame to lift the permanent magnet packings one by one, and place them layer by layer between two magnetic shielding support plates. The antimagnetic support plates provide layered support for the permanent magnet packings. Then, the mobile frame is pushed to transport the stacked permanent magnet packings to the destination. Finally, each permanent magnet packing is lifted and placed in the designated location at the destination.

[0014] This invention discloses a special lifting and hoisting device and method for permanent magnets. A mounting frame is connected to the telescopic arm of a mobile vehicle frame and a hoisting winch via a hoisting rope. A hook for hoisting bundled permanent magnets is connected to the mounting frame via a movable arm. The mobile vehicle frame also has a shielding layer composed of a magnetic shielding base plate, magnetic shielding support plates on the left and right sides, and magnetic shielding side plates on the front and rear sides. Multiple bundled permanent magnets are stacked inside the shielding layer via antimagnetic support plates for transport. The shielding layer weakens the magnetic influence of the bundled permanent magnets on the external environment. An insulating layer is also provided, composed of all U-shaped insulating plates and all fixed insulating plates on the left and right sides, and folded insulating plates on the front and rear sides. This insulating layer, in conjunction with the shielding layer, further weakens the magnetic influence of the bundled permanent magnets on the external environment, thereby effectively overcoming the safety hazards caused by the strong magnetic field generated by the overlapping hoisting of multiple bundled permanent magnets. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the mounting bracket of the present invention; Figure 3 This is a three-dimensional structural diagram of the magnetic shielding support plate of the present invention; Figure 4 This is a top view of the magnetic shielding base plate of the present invention; Figure 5 This is a three-dimensional structural diagram of the folded insulating plate of the present invention; Figure 6 This is a three-dimensional structural diagram of the U-shaped insulating plate of the present invention; Figure 7 This is a three-dimensional structural diagram of the magnetic shielding side plate of the present invention; Figure 8 This is a three-dimensional structural diagram of the iron plate of the present invention.

[0016] Reference numerals: 11-Mobile frame, 12-Support rod, 13-Telescopic boom, 14-Lifting winch, 15-Lifting rope, 21-Mounting frame, 22-Sliding boom, 23-Tension spring, 24-Hook, 25-Connecting rod, 26-Side caster, 27-Electromagnetic body, 31-Magnetic shielding base plate, 3101-Positioning hole, 32-Magnetic shielding support plate, 3201-Mounting hole, 33-U-shaped insulating plate, 34-Antimagnetic support plate, 35-Compression spring, 36-Magnetic shielding side plate, 3601-Slot, 361-Magnetic shielding fixing plate, 362-Magnetic shielding movable plate, 37-Folding insulating plate, 38-Fixed insulating plate, 39-Iron plate. Detailed Implementation

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

[0018] Example 1: A special lifting and hoisting device for permanent magnets according to the present invention, such as... Figures 1-7As shown, the system includes a mobile frame 11, support rod 12, telescopic boom 13, hoisting winch 14, hoisting rope 15, mounting frame 21, movable boom 22, tension spring 23, hook 24, connecting rod 25, side casters 26, magnetic shielding base plate 31, magnetic shielding support plate 32, U-shaped insulating plate 33, antimagnetic support plate 34, and magnetic shielding side plate 36. Support rod 12 is fixedly connected to the mobile frame 11. Telescopic boom 13 is mounted on support rod 12. Hoisting winch 14 is mounted on support rod 12. Hoisting rope 15 is wound around hoisting winch 14. A pulley system is provided on telescopic boom 13, and the release end of hoisting rope 15 passes sequentially through the pulley system on telescopic boom 13. The release end of hoisting rope 15 is fixedly connected to mounting frame 21. Two movable booms 22 are slidably connected to the front and rear sides of mounting frame 21. A tension spring 23 is fixedly connected between each movable boom 22 and mounting frame 21. Each movable arm 22 is fixedly connected to a hook 24; a connecting rod 25 is fixedly connected between each pair of adjacent movable arms 22; two side casters 26 are fixedly connected to each of the two hooks 24 located at the rear; a magnetic shielding base plate 31 is fixedly connected to the mobile frame 11; two magnetic shielding support plates 32 are provided on the magnetic shielding base plate 31, which are symmetrical to each other; several U-shaped insulating plates 33 are provided at equal intervals along the vertical direction on the two magnetic shielding support plates 32; an antimagnetic support plate 34 is slidably connected to each U-shaped insulating plate 33; a magnetic shielding side plate 36 is connected between the front sides of the two magnetic shielding support plates 32; a magnetic shielding side plate 36 is also connected between the rear sides of the two magnetic shielding support plates 32; the magnetic shielding base plate 31, magnetic shielding support plates 32 and magnetic shielding side plates 36 are all made of stainless steel with magnetic shielding effect, and they together form a shielding ring.

[0019] like Figure 3 and Figure 7As shown, both magnetic shielding support plates 32 are slidably connected to the magnetic shielding base plate 31; the magnetic shielding base plate 31 has several positioning holes 3101; each of the two magnetic shielding support plates 32 has several mounting holes 3201 corresponding to the positioning holes 3101; by pushing the magnetic shielding support plate 32 to move left and right along the magnetic shielding base plate 31, the width between the two magnetic shielding support plates 32 can be changed, so that permanent magnet packing groups of different sizes can be placed. After the width adjustment is completed, the mounting holes 3201 of the magnetic shielding support plate 32 are fixed together with the corresponding positioning holes 3101 of the magnetic shielding base plate 31 by bolts. This allows the two magnetic shielding support plates 32, whose width has been adjusted, to maintain their current width distance. The magnetic shielding side plate 36 consists of a magnetic shielding fixed plate 361 and a magnetic shielding movable plate 362. The magnetic shielding support plate 32 on the left is fixed to the magnetic shielding movable plate 362, and the magnetic shielding support plate 32 on the right is fixed to the magnetic shielding fixed plate 361. The magnetic shielding movable plate 362 is slidably connected to the magnetic shielding fixed plate 361. When adjusting the width between the two magnetic shielding support plates 32, the magnetic shielding support plates 32 on both sides will drive the magnetic shielding fixed plate 361 and the magnetic shielding movable plate 362 to move relative to each other, thereby allowing the overall width of the magnetic shielding side plate 36 to be adjusted synchronously.

[0020] like Figures 3-5 As shown, a folded insulating plate 37 is fixedly connected between the front sides of the two magnetic shielding support plates 32; a folded insulating plate 37 is also fixedly connected between the rear sides of the two magnetic shielding support plates 32. The folded insulating plate 37 is initially in a compressed state. During the adjustment of the width between the two magnetic shielding support plates 32, the compressed folded insulating plate 37 can expand or contract accordingly to adapt to the change in width; a fixed insulating plate 38 is fixedly connected between every two adjacent U-shaped insulating plates 33. These U-shaped insulating plates 33, fixed insulating plates 38, and folded insulating plates 37 on the front and rear sides together form an insulating ring inside the shielding ring. This insulating ring can work with the shielding ring to further weaken the magnetic influence of the permanent magnet packing assembly on the outside.

[0021] When using the permanent magnet-specific lifting and hoisting equipment of the present invention to lift and hoist multiple permanent magnet packing groups, the operator first moves the mobile frame 11 to the side of the permanent magnet packing group to be lifted and hoisted. Then, the operator controls the telescopic arm 13 to extend the mounting frame 21 forward to align it above the permanent magnet packing group. At the same time, the operator controls the lifting winch 14 to continuously release the hoisting rope 15. The hoisting rope 15 drives the mounting frame 21 to move downward and approach the permanent magnet packing group. The operator pulls the connecting rods 25 on the front and rear sides respectively to move the movable arms 22 on the front and rear sides away from each other. At the same time, the movable arms 22 drive the tension spring 23 to stretch, so that the hooks 24 on the movable arms 22 on the front and rear sides align with the hook components on the front and rear sides of the permanent magnet packing group. The operator then releases the connecting rods 25, and the stretched tension spring 23 pulls the movable arms 22 to move the hooks 24 in the opposite direction, so that the hooks 24 on the front and rear sides clamp the permanent magnet packing group on the front and rear sides respectively, firmly clamping the permanent magnet packing group.

[0022] Afterwards, the staff controlled the hoisting winch 14 to retract the hoisting rope 15. The hoisting rope 15 drove the mounting frame 21 and the permanent magnet pack held by the hook 24 to move slowly upward. During the upward movement, the permanent magnet pack will generate a magnetic attraction with the front magnetic shielding side plate 36. Under the action of this magnetic attraction, the permanent magnet pack will pull the mounting frame 21 and the hoisting rope 15 towards the magnetic shielding side plate 36. At the same time, the mounting frame 21 will drive the side casters 26 on the rear hook 24 to press against the front magnetic shielding side plate 36, so that the permanent magnet pack is isolated from the front magnetic shielding side plate 36 by the side casters 26. The side casters 26 will not experience much frictional resistance between the side casters 26 and the magnetic shielding side plate 36. Therefore, the mounting frame 21 and the permanent magnet pack can move smoothly upward along the magnetic shielding side plate 36. After the permanent magnet pack is hoisted to a height higher than the magnetic shielding support, After the top of plate 32, the operator controls the telescopic arm 13 to move the mounting frame 21 backward to align with the upper part of the internal space of the shielding ring, and aligns the side casters 26 with the upper front side of the rear folded insulating plate 37. Then, the operator controls the hoisting winch 14 to continuously release the hoisting rope 15. The hoisting rope 15 drives the mounting frame 21 and the permanent magnet package held by the hook 24 to slowly move downward into the shielding ring. At the same time, the side casters 26 slowly move downward along the folded insulating plate 37. Meanwhile, the operator pushes the two U-shaped insulating plates 33 at the bottom layer into the shielding ring, so that the permanent magnet package is slowly placed on the two U-shaped insulating plates 33 of this layer. The operator then pulls the hooks 24 on the front and rear sides away from the permanent magnet package, thus completing the hoisting and lifting work of transferring the first permanent magnet package into the shielding ring.

[0023] Afterwards, the staff followed the above steps to stack multiple permanent magnet packing groups inside the shielding layer. The U-shaped insulating plate 33 was used to isolate two adjacent permanent magnet packing groups to prevent them from being magnetically attracted together. Then, the mobile frame 11 was pushed to move all the stacked permanent magnet packing groups to the destination. At this time, the insulating layer and the shielding layer could significantly reduce the magnetic force of the permanent magnet packing groups on the outside world, eliminating the safety hazards when lifting and hoisting multiple permanent magnet packing groups at the same time. Finally, the staff followed the reverse steps to lift each permanent magnet packing group out of the shielding layer and place it in the designated location at the destination, completing the lifting and hoisting of all permanent magnet packing groups.

[0024] Example 2, as Figures 1-7 As shown, based on the above embodiment 1, an electromagnet 27 is installed at the bottom of the mounting frame 21 in this embodiment; the weight of a single permanent magnet packing assembly is relatively heavy. During the lifting operation of the permanent magnet packing assembly by the hooks 24, the electromagnet 27 generates a strong electromagnetic attraction on the permanent magnet packing assembly, causing the permanent magnet packing assembly to be lifted upwards under the action of this strong electromagnetic attraction. This prevents the overall weight of the permanent magnet packing assembly from acting solely on each hook 24, reducing the downward pressure borne by each hook 24 from the permanent magnet packing assembly, thereby enabling the equipment to lift heavier permanent magnet packing assemblies; each of the two magnetic shielding side plates 36 has two slots 3601 structures adapted to the structure of the hooks 24; after completing all After the permanent magnet packing assembly is lifted and transported, there is no longer a permanent magnet packing assembly on the mobile frame 11. The operator controls the lifting winch 14 to continuously release the hoisting rope 15 and pulls the connecting rods 25 on the front and rear sides respectively to move the movable arms 22 on the front and rear sides away from each other. At the same time, the movable arms 22 drive the tension spring 23 to stretch, so that the hooks 24 on the movable arms 22 on the front and rear sides are respectively locked into the slots 3601 structure of the two magnetic shielding side plates 36. The mounting frame 21 is fixed between the two magnetic shielding side plates 36 by the hooks 24 on both sides. When the mobile frame 11 encounters bumps during subsequent movement, even if the electromagnet 27 is heavy, the mounting frame 21, the electromagnet 27 and the released end of the hoisting rope 15 will not shake violently.

[0025] Example 3, as Figures 1-8As shown, based on the above embodiment 1, each antimagnetic support plate 34 in this embodiment is fixedly connected to a vertically penetrating iron plate 39; several compression springs 35 are fixedly connected between each antimagnetic support plate 34 and the corresponding magnetic shielding support plate 32. When the moving frame 11 is bumpy, the compression springs 35 can play a buffering and limiting role, which helps to prevent the antimagnetic support plate 34 from having excessive lateral displacement; when the permanent magnet packaging group is hoisted between the two magnetic shielding support plates 32, the workers push the antimagnetic support plate 34 to move in the direction between the two magnetic shielding support plates 32, and at the same time drive the antimagnetic support plate 34 to move between the two magnetic shielding support plates 32. The support plate 34 drives the compression spring 35 to compress. When the permanent magnet packaging assembly is hoisted and placed on the antimagnetic support plate 34, the iron plate 39 on the antimagnetic support plate 34 is firmly attracted by the permanent magnet in the permanent magnet packaging assembly. The magnetic attraction force generated by the permanent magnet on the iron plate 39 can resist the reverse elastic force generated when the compression spring 35 is compressed, so that the antimagnetic support plate 34 is firmly attached to the permanent magnet packaging assembly under the action of the magnetic attraction force. This prevents the antimagnetic support plate 34 from slipping off the bottom of the permanent magnet packaging assembly due to vibration when the moving frame 11 is bumpy, so that the antimagnetic support plate 34 can firmly provide bottom support for the permanent magnet packaging assembly.

[0026] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A special lifting and hoisting device for permanent magnets, comprising a mobile frame (11); a support rod (12) fixedly connected to the mobile frame (11); a telescopic boom (13) installed on the support rod (12); a lifting winch (14) installed on the support rod (12); a hoisting rope (15) wound on the hoisting winch (14), the release end of the hoisting rope (15) being mounted on the pulley block of the telescopic boom (13); Its features are: It also includes a mounting frame (21); the end of the hoisting rope (15) is fixed to the mounting frame (21); the front and rear sides of the mounting frame (21) are slidably connected to two movable arms (22); a tension spring (23) is fixed between the movable arm (22) and the mounting frame (21); a hook (24) is fixed to each movable arm (22); a magnetic shielding base plate (31) is fixed to the mobile frame (11); two magnetic shielding support plates (32) are provided on the magnetic shielding base plate (31); several U-shaped insulating plates (33) are provided on the magnetic shielding support plates (32); antimagnetic support plates (34) are slidably connected to the U-shaped insulating plates (33); two front and rear magnetic shielding side plates (36) are connected together between the two magnetic shielding support plates (32).

2. The special lifting and hoisting equipment for permanent magnets according to claim 1, characterized in that: A connecting rod (25) is fixedly connected between two adjacent movable arms (22).

3. The special lifting and hoisting equipment for permanent magnets according to claim 2, characterized in that: A side caster (26) is fixed to the hook (24) located on the rear side.

4. The special lifting and hoisting equipment for permanent magnets according to claim 1, characterized in that: Both magnetic shielding support plates (32) are slidably connected to the magnetic shielding base plate (31); the magnetic shielding base plate (31) is provided with a number of positioning holes (3101); each of the two magnetic shielding support plates (32) is provided with a number of mounting holes (3201) corresponding to the positioning holes (3101); the magnetic shielding side plate (36) is composed of a magnetic shielding fixed plate (361) and a magnetic shielding movable plate (362); the magnetic shielding support plate (32) on the left is fixedly connected to the magnetic shielding movable plate (362); the magnetic shielding support plate (32) on the right is fixedly connected to the magnetic shielding fixed plate (361); the magnetic shielding movable plate (362) is slidably connected to the magnetic shielding fixed plate (361).

5. The special lifting and hoisting equipment for permanent magnets according to claim 4, characterized in that: Two folded insulating plates (37) are fixedly connected between the two magnetic shielding support plates (32); the two folded insulating plates (37) are located between the two magnetic shielding side plates (36).

6. The special lifting and hoisting equipment for permanent magnets according to claim 5, characterized in that: A fixed insulating plate (38) is fixedly connected between two adjacent U-shaped insulating plates (33).

7. The special lifting and hoisting equipment for permanent magnets according to claim 1, characterized in that: An electromagnet (27) is mounted on the bottom of the mounting bracket (21).

8. A special lifting and hoisting device for permanent magnets according to claim 7, characterized in that: Two slots (3601) are provided on each of the two magnetic shielding side plates (36) to match the structure of the hook (24).

9. A special lifting and hoisting device for permanent magnets according to claim 1, characterized in that: An iron plate (39) is fixedly connected to the antimagnetic support plate (34); a compression spring (35) is fixedly connected between the antimagnetic support plate (34) and the corresponding magnetic shielding support plate (32).

10. A method of using a special lifting and hoisting device for permanent magnets, wherein the method of use is applied to the special lifting and hoisting device for permanent magnets as described in any one of claims 1-9, characterized in that, The process includes the following steps: First, the hoisting winch (14) controls the hoisting rope (15) to drive the hook (24) on the mounting frame (21) to lift the permanent magnet packing group in sequence, and place them one by one between the two magnetic shielding support plates (32). The permanent magnet packing group is supported in layers by the antimagnetic support plate (34). Then, the mobile frame (11) is pushed to transfer the stacked permanent magnet packing group to the destination. Finally, each permanent magnet packing group is lifted in sequence and placed in the designated position at the destination.

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