CN219449005U - Permanent magnet lifting appliance - Google Patents

Abstract

The utility model provides a permanent magnet lifting appliance, which comprises a shell, a driving mechanism and an adsorption mechanism, wherein the driving mechanism and the adsorption mechanism are arranged in the shell, the adsorption mechanism is positioned at the bottom of the shell, the adsorption mechanism comprises two magnetic attraction units which are oppositely arranged along the length direction of the shell and a magnetic changing mechanism for changing the magnetic force of the adsorption mechanism, the two magnetic attraction units are both fixed at the bottom of the shell, a rotating space for the magnetic changing mechanism to rotate around the self is formed between the two magnetic attraction units at intervals, the magnetic changing mechanism is arranged in the rotating space and is rotatably connected to the shell, and the driving end of the driving mechanism is fixedly connected with the magnetic changing mechanism. Structural technicians who so set up need not to pin the steel wire rope for the crop and cut the tail again, and accessible control actuating mechanism drive becomes the magnetism mechanism rotatory to make adsorption equipment have adsorption capacity, with adsorb crop and cut the tail, alleviateed technical personnel's intensity of labour, improved work efficiency.

Description

Permanent magnet lifting appliance

Technical Field

The utility model relates to the technical field of lifting appliances, in particular to a permanent magnet lifting appliance.

Background

Hot rolled coils are an important steel variety that is easy to shape and require the billet to be trimmed by flying shears, called end-to-end cutting, before the hot rolled coils enter the finishing mill. The crop falls into the waste material frame through the silo, because of its shape is different to and the offset of silo and waste material frame, some crop tail can unrestrained in the material frame outside, and when crop tail spill in the material frame outside, need hang it into the material frame and just can transport.

In the prior art, the steel wire rope is used for locking the head and the tail of the crop and then lifting, and the scattered head and the tail of the crop are in an irregular form and fall on the narrow limit of the land, so that the locking and unlocking of the head and the tail of the crop are inconvenient, the time consumption is long, the labor intensity is high, and the potential safety hazard is easy to occur.

In view of this, there is a need to propose a permanent magnet spreader that solves or at least alleviates the above-mentioned drawbacks.

Disclosure of Invention

The utility model mainly aims to provide a permanent magnet lifting appliance, which solves the problems that in the prior art, a steel wire rope is used for locking a head and a tail of a lifting appliance and then lifting the lifting appliance, so that the time is long, the labor intensity is high, and potential safety hazards are easy to occur.

In order to achieve the above purpose, the utility model provides a permanent magnet lifting appliance, which comprises a shell, a driving mechanism and an adsorption mechanism, wherein the driving mechanism and the adsorption mechanism are arranged in the shell, and the adsorption mechanism is positioned at the bottom of the shell; wherein,,

the adsorption mechanism comprises two magnetic attraction units and a variable magnetic mechanism, wherein the two magnetic attraction units are oppositely arranged along the length direction of the shell, the variable magnetic mechanism is used for changing the magnetic force of the magnetic attraction units, the two magnetic attraction units are both fixed at the bottom of the shell, a rotating space for the variable magnetic mechanism to rotate around the self is formed between the two magnetic attraction units at intervals, and the variable magnetic mechanism is arranged in the rotating space and is rotatably connected to the shell;

the driving end of the driving mechanism is fixedly connected with the variable magnetic mechanism;

the driving mechanism drives the variable magnetic mechanism to rotate in the rotating space so as to change magnetic force lines of the magnetic attraction unit, thereby adsorbing or loosening the target suspended object.

Preferably, the magnetism changing mechanism comprises a bar magnet and a rotating shaft extending along the width direction of the shell, the rotating shaft is rotatably connected to the shell and arranged in the middle of the rotating space, a through hole for the rotating shaft to penetrate is formed in the middle of the bar magnet, and the bar magnet is fixed on the rotating shaft; wherein,,

the driving end of the driving mechanism is fixedly connected with the rotating shaft so as to drive the rotating shaft to rotate and drive the bar magnet to rotate from a vertical state to a horizontal state.

Preferably, the driving mechanism comprises a telescopic push rod and a pull rod, the telescopic push rod comprises a fixed end and a connecting end, the fixed end of the telescopic push rod is fixed at the top of the shell, the connecting end of the telescopic push rod is hinged with one end of the pull rod, and the other end of the pull rod is fixedly connected with the rotating shaft.

Preferably, the telescopic pushing rod comprises a shell, and the telescopic pushing rod comprises a shell, wherein the shell is provided with a telescopic pushing rod, the telescopic pushing rod is arranged on the shell, and the telescopic pushing rod is arranged on the shell.

Preferably, each magnetic attraction unit comprises a plurality of magnetic blocks which are arranged at intervals along the width room of the shell, and the number of the strip magnets is corresponding to the number of the magnetic blocks in each magnetic attraction unit.

Preferably, the number of the magnetic blocks in each magnetic attraction unit is two.

Preferably, the bottom of the shell is provided with a V-shaped groove in an inward concave manner.

Preferably, the lifting lug is arranged above the shell and is fixedly connected with the shell.

Preferably, a supporting steel plate is arranged in the middle of the shell, a through hole for the telescopic push rod to penetrate through is formed in the supporting steel plate, and the aperture of the through hole is larger than the diameter of the telescopic push rod.

Preferably, the telescopic distance of the telescopic push rod is 110 mm-130 mm.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a permanent magnet lifting appliance, which comprises a shell, a driving mechanism and an adsorption mechanism, wherein the driving mechanism and the adsorption mechanism are arranged in the shell, the adsorption mechanism comprises two magnetic attraction units and a variable magnetic mechanism, the two magnetic attraction units are oppositely arranged along the length direction of the shell, the variable magnetic mechanism is used for changing the magnetic force of the adsorption mechanism, the two magnetic attraction units are fixed at the bottom of the shell, a rotating space for the variable magnetic mechanism to rotate around the self is formed between the two magnetic attraction units at intervals, the variable magnetic mechanism is arranged in the rotating space and is rotatably connected to the shell, and the driving end of the driving mechanism is fixedly connected with the variable magnetic mechanism. Structural technicians who so set up need not to pin the steel wire rope for the crop and cut the tail again, and accessible control actuating mechanism drive becomes the magnetism mechanism rotatory to make adsorption equipment have adsorption capacity, with adsorb crop and cut the tail, alleviateed technical personnel's intensity of labour, improved work efficiency.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from the mechanisms shown in these drawings without the need for inventive labour for a person skilled in the art.

FIG. 1 is an internal schematic view of the overall structure in an operating state in one embodiment of the present utility model;

FIG. 2 is an internal schematic view of the overall structure in a closed state in one embodiment of the utility model;

FIG. 3 is a schematic cross-sectional view taken along the direction A-A in FIG. 1

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Reference numerals illustrate:

10. an adsorption mechanism; 110. a magnetic attraction unit; 111. a rotation space; 112. a magnetic block; 120. a magnetic changing mechanism; 121. a bar magnet; 122. a rotation shaft; 20. a driving mechanism; 210. a telescopic push rod; 220. a pull rod; 30. a housing; 310. a V-shaped groove; 320. lifting lugs; 330. supporting a steel plate; 40. a regulating mechanism; 410. a receiver; 420. a contactor; 430. and a power supply module.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1-3, a permanent magnet lifting appliance according to an embodiment of the present utility model includes a housing 30, a driving mechanism 20 and an adsorption mechanism 10 which are disposed in the housing 30, wherein the adsorption mechanism 10 is disposed at the bottom of the housing 30. Firstly, it should be noted that, unlike the prior art in which the end-cutting and end-cutting are locked by a wire rope and then lifted, the scattered end-cutting and end-cutting are usually in an irregular form, and the falling land block is limited in narrow, so that the locking and releasing of the end-cutting and end-cutting are inconvenient, the time consumption is long, the labor intensity is high, and the potential safety hazard is easy to occur. The utility model provides a through setting up a permanent magnetism hoist in order to solve the above-mentioned defect among the prior art. The method comprises the following steps:

the adsorption mechanism 10 includes two magnetic units 110 disposed opposite to each other along the length direction of the housing 30, and a variable magnetic mechanism 120 for changing the magnetic force of the magnetic units 110, where the two magnetic units 110 are fixed to the bottom of the housing 30, a rotation space 111 for the variable magnetic mechanism 120 to rotate around itself is formed between the two magnetic units 110 at intervals, and the variable magnetic mechanism 120 is disposed in the rotation space 111 and rotatably connected to the housing 30.

Specifically, the adsorption mechanism 10 is configured to adsorb a workpiece to be lifted and cut, and includes two magnetic attraction units 110 and a magnetic changing mechanism 120, where the magnetic attraction units 110 may use a permanent magnetic material neodymium borax, and can generate a strong attraction force in a magnetic circuit, the two magnetic attraction units 110 are fixed at the bottom of the casing 30, and are oppositely disposed along the length direction of the casing 30, a rotation space 111 is formed between the two magnetic attraction units 110, the rotation space 111 is used for the magnetic changing mechanism 120 to rotate around itself, and the magnetic changing mechanism 120 is configured to change magnetic force lines of the magnetic attraction units 110, and the magnetic force lines of the magnetic attraction units 110 are changed by the magnetic changing mechanism 120 being turned over, so as to achieve an adsorption/release state of the workpiece to be lifted by the adsorption mechanism 10.

The driving end of the driving mechanism 20 is fixedly connected with the variable magnetic mechanism 120; wherein the driving mechanism 20 drives the variable magnetic mechanism 120 to rotate in the rotation space 111 to change magnetic force lines of the magnetic attraction unit 110, thereby attracting or releasing the target suspended object.

In detail, the driving mechanism 20 is used for driving the variable magnetic mechanism 120 to turn over, so that the driving end of the driving mechanism 20 is fixedly connected with the variable magnetic mechanism 120, when the variable magnetic mechanism 120 is driven to turn over so that magnetic lines of force are overlapped, the magnetic lines of force are led out to a working adsorption pole face at the bottom of the permanent magnet lifting appliance to generate adsorption force, and therefore a head-cutting and tail-cutting workpiece to be lifted is adsorbed; when the magnetism changing mechanism 120 is driven to turn over so that magnetic force lines are not overlapped, the magnetic force lines do not reach the working pole face of the permanent magnet lifting tool, a magnetic circuit closed loop is formed inside, and the working pole face of the permanent magnet lifting tool is free from magnetic force lines, so that attraction force is not generated on an object, and the object can be smoothly unloaded at the moment.

As a preferred embodiment of the present utility model, the magnetism varying mechanism 120 includes a bar magnet 121 and a rotation shaft 122 extending along a width direction of the housing 30, the rotation shaft 122 is rotatably connected to the housing 30 and is disposed in a middle portion of the rotation space 111, a through hole through which the rotation shaft 122 passes is formed in a middle portion of the bar magnet 121, and the bar magnet 121 is fixed to the rotation shaft 122; the driving end of the driving mechanism 20 is fixedly connected with the rotating shaft 122, so as to drive the rotating shaft 122 to rotate and drive the bar magnet 121 to rotate from a vertical state to a horizontal state.

It should be noted that, the magnetism varying mechanism 120 includes a bar magnet 121 and a rotation shaft 122, the rotation shaft 122 is used for mounting the bar magnet 121, the rotation shaft 122 is disposed extending along the width direction of the housing 30 and is rotatably connected to the housing 30, the bar magnet 121 is used for changing magnetic force lines, so that the bar magnet 121 is fixed on the rotation shaft 122, and a through hole for the rotation shaft 122 to penetrate is formed in the middle of the bar magnet; when the driving mechanism 20 drives the rotating shaft 122 to rotate and drives the bar magnet 121 to rotate to a horizontal state, magnetic force lines are overlapped, so that the magnetic force lines pass through and reach the working adsorption pole face at the bottom of the permanent magnet lifting appliance, a target material piece can be adsorbed by the working adsorption pole face at the bottom of the permanent magnet lifting appliance, and then lifted by an external lifting machine; when the driving mechanism 20 drives the rotation shaft 122 to rotate and drives the bar magnet 121 to rotate to a vertical state, magnetic force lines do not reach the working pole face of the permanent magnet lifting tool, a magnetic circuit closed loop is formed inside the permanent magnet lifting tool, and the working pole face of the permanent magnet lifting tool is free from magnetic force lines, so that attraction force is not generated on an object, and smooth unloading can be realized at the moment.

As a preferred embodiment of the present utility model, the driving mechanism 20 includes a telescopic push rod 210 and a pull rod 220, the telescopic push rod 210 includes a fixed end and a connecting end, the fixed end of the telescopic push rod 210 is fixed on the top of the housing 30, the connecting end of the telescopic push rod 210 is hinged to one end of the pull rod 220, and the other end of the pull rod 220 is fixedly connected to the rotating shaft 122. It should be noted that, the driving mechanism 20 includes a telescopic push rod 210 and a pull rod 220, and the telescopic push rod 210 may be an electric push rod, and the specific structure and the usage method thereof are well known to those skilled in the art, so that detailed descriptions thereof are omitted herein; the fixed end of the telescopic push rod 210 is fixed to the top of the housing 30, so that the connecting end of the telescopic push rod 210 is extended downward, the connecting end of the telescopic push rod 210 is hinged to one end of the pull rod 220, so that the pull rod 220 is driven to move up and down by the telescopic push rod 210, and the other end of the pull rod 220 is fixedly connected with the rotating shaft 122, so that the pull rod 220 drives the rotating shaft 122 to rotate when moving up and down, and the bar magnet 121 fixed on the rotating shaft 122 rotates along with the rotating shaft 122, so that the vertical/horizontal state is switched, and the working/closing state is achieved.

As a preferred embodiment of the present utility model, the control mechanism 40 further includes a receiver 410 for receiving signals, a contactor 420 for transmitting signals, and a power module 430, wherein the receiver 410, the contactor 420, and the power module 430 are all fixed on the top of the housing 30, and the contactor 420 is electrically connected with the telescopic push rod 210.

It should be noted that, the control mechanism 40 is used for a technician to remotely control the telescopic push rod 210 to realize the conversion of the working state, and the flying and shearing billet heads and tails are sharp due to the narrow limit of the pit in the falling area of the head and the tail, so that the potential safety hazard can be avoided by remote control of the control mechanism 40 in order to avoid the technician from being injured by accident; the adjusting mechanism 40 includes a receiver 410, a contactor 420, and a power module 430, wherein the receiver 410 is configured to receive a signal sent by a remote control end, the contactor 420 is configured to transmit the received signal and feed back to the telescopic push rod 210 to perform corresponding telescopic operation, so that the contactor 420 is electrically connected to the telescopic push rod 210, and the power module 430 is configured to provide power.

Further, the power source may be a set of 24V rechargeable lithium batteries, and the charging port may be a 24V power adapter, and the receiver 410 may be provided with an antenna to improve the signal receiving capability, and since the power source and the receiver 410 are both fixed on the top of the housing 30, a first through hole (not shown) for extending the charging port (not shown) of the power source and a second through hole (not shown) for extending the antenna (not shown) of the receiver 410 are correspondingly provided at the top of the housing 30.

Preferably, in order to avoid the damage of the extending antenna and the charging port, an anti-collision device (not shown) and a waterproof device (not shown) can be additionally arranged at the antenna and the charging port, and the anti-collision device and the waterproof device can adopt a protective cover, so that an anti-collision effect can be achieved without using the anti-collision device, and meanwhile water infiltration can be prevented.

As a preferred embodiment of the present utility model, each of the magnetic units 110 includes a plurality of magnetic blocks 112 arranged at intervals along the width of the housing 30, and the number of the bar magnets 121 is set corresponding to the number of the magnetic blocks 112 in each of the magnetic units 110.

It should be understood that each of the magnetic units 110 includes a plurality of magnetic blocks 112 arranged at intervals along the width of the housing 30, so that the adsorption surface at the bottom of the housing 30 can be uniformly distributed to have adsorption force when in an operating state, and therefore each of the magnetic units 110 includes a plurality of magnetic blocks 112 arranged at intervals along the width of the housing 30, and the number of the magnetic blocks 112 in each of the magnetic units 110 can be set by those skilled in the art according to the internal space of the housing 30; wherein, the strip magnets 121 are arranged in one-to-one correspondence with the magnetic blocks 112, and the one-to-one correspondence is that the number of the strip magnets 121 is identical to the number of the magnetic blocks 112 in each magnetic attraction unit 110, and the strip magnets are correspondingly arranged in the rotating space 111 between the two magnetic blocks 112 oppositely arranged along the length direction of the housing 30, so that the strip magnets 121 can be ensured to change magnetic lines of force between the two magnetic blocks 112 oppositely arranged along the length direction of the housing 30 when turning over, and the permanent magnet lifting appliance is in a working/closing state.

Further, the number of the magnetic blocks 112 in each of the magnetic attraction units 110 is two. It should be noted that, considering the internal space of the housing 30, two magnetic blocks 112 are disposed in each magnetic attraction unit 110, so that the attraction force is uniformly distributed on the attraction surface at the bottom of the housing 30 when the attraction surface is in a working state.

Further, the bottom of the housing 30 is provided with a V-shaped groove 310 recessed inward. It should be noted that the V-shaped groove 310 may be used to clamp a cylindrical object, and when the permanent magnet hanger is in a working state, the cylindrical object is adsorbed at the V-shaped groove 310.

Further, the lifting lug 320 is disposed above the housing 30, and the lifting lug 320 is fixedly connected with the housing 30. It should be noted that, the lifting lug 320 is used for being lifted by an external lifting device, so as to lift the whole permanent magnet lifting appliance and the adsorbed material, the lifting lug 320 can be fixed on the top of the shell 30 through bolts, and if the lifting lug 320 is damaged after long-term use, maintenance or replacement is required, so that the lifting lug 320 can be conveniently disassembled.

Further, a supporting steel plate 330 is disposed in the middle of the housing 30, the supporting steel plate 330 is provided with a through hole for the telescopic push rod 210 to penetrate, and the aperture of the through hole is larger than the diameter of the telescopic push rod 210. It is easy to understand that the shell 30 is a steel structural member, the middle part is provided with the supporting steel plate 330 to strengthen the anti-impact deformation capability of the middle part of the shell 30, and the supporting steel plate 330 can be fixed on the middle part of the shell 30 by welding; because the supporting steel plate 330 is disposed above the variable magnetic mechanism 120, in order to avoid blocking the telescopic pushing rod 210 from performing telescopic motion, a through hole for the telescopic pushing rod 210 to pass through needs to be formed on the supporting steel plate 330, the through hole needs to be disposed corresponding to the motion path of the telescopic pushing rod 210, and the aperture of the through hole needs to be larger than the diameter of the telescopic pushing rod 210, so that the telescopic pushing rod 210 can pass through.

Further, the telescopic distance of the telescopic push rod 210 is 110mm to 130mm. It can be understood that the telescopic distance of the telescopic push rod 210 needs to be enough to drive the pull rod 220 to drive the bar magnet 121 to complete the adsorption/release state, and the telescopic distance can be set to be 110 mm-130 mm, in this application, the switching of the working state can be satisfied when the telescopic push rod is set to be 120mm, so that preferably, the telescopic distance of the telescopic push rod 210 can be set to be 120mm, and a specific telescopic distance can be set by a person skilled in the art according to practical situations.

For ease of understanding by those skilled in the art, the illustrative workflow is as follows:

the driving hook is controlled to hang the permanent magnet lifting appliance, and the permanent magnet lifting appliance is close to a crop and a tail material part to be lifted, a technician sends out a signal through controlling a remote control, a receiver 410 receives the signal and feeds back to a contactor 420, the contactor 420 feeds back to a telescopic push rod 210 to drive the telescopic push rod 210 to extend downwards, the telescopic push rod 210 drives one end of a pull rod 220 to move downwards, the other end of the pull rod 220 simultaneously drives a rotating shaft 122 to rotate, a bar magnet 121 fixed on the rotating shaft 122 rotates to a horizontal state together, at the moment, magnetic lines of force are overlapped, the magnetic lines of force are led out to an operating adsorption pole face at the bottom of the permanent magnet lifting appliance to generate an adsorption force, thereby adsorbing the crop and the tail material part to be lifted, the crop and the tail material part to be lifted are controlled to be lifted, the remote control end of the remote control sends out another signal, the receiver 410 receives the signal and feeds back to the contactor 420, the contactor 420 feeds back to drive the telescopic push rod 210 to shrink upwards, the telescopic push rod 210 drives one end of the pull rod 220 to move upwards, at the moment, the other end of the pull rod 220 simultaneously drives the rotating shaft 122 to rotate reversely, the bar magnet 121 fixed on the rotating shaft 122 rotates to a vertical state together, at the moment, the magnetic lines of force do not overlap, the magnetic lines of force are led out to the bottom the permanent magnet lifting appliance to the work and an operating adsorption pole face to form a closed loop, and a closed loop, the crop and a tail material can be lifted smoothly unloaded, and a closed loop, and a work can not cut to a tail material smoothly work and a tail material is completely.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the mechanism or equivalent process described in the specification and drawings, or any other application, directly or indirectly, of the present utility model.

Claims (10)

1. The permanent magnet lifting appliance is characterized by comprising a shell, a driving mechanism and an adsorption mechanism, wherein the driving mechanism and the adsorption mechanism are arranged in the shell, and the adsorption mechanism is positioned at the bottom of the shell; wherein,,

the adsorption mechanism comprises two magnetic attraction units and a variable magnetic mechanism, wherein the two magnetic attraction units are oppositely arranged along the length direction of the shell, the variable magnetic mechanism is used for changing the magnetic force of the magnetic attraction units, the two magnetic attraction units are both fixed at the bottom of the shell, a rotating space for the variable magnetic mechanism to rotate around the self is formed between the two magnetic attraction units at intervals, and the variable magnetic mechanism is arranged in the rotating space and is rotatably connected to the shell;

the driving end of the driving mechanism is fixedly connected with the variable magnetic mechanism;

the driving mechanism drives the variable magnetic mechanism to rotate in the rotating space so as to change magnetic force lines of the magnetic attraction unit, thereby adsorbing or loosening the target suspended object.

2. The permanent magnet lifting appliance according to claim 1, wherein the magnetism changing mechanism comprises a bar magnet and a rotating shaft extending along the width direction of the housing, the rotating shaft is rotatably connected to the housing and is arranged in the middle of the rotating space, a through hole for the rotating shaft to penetrate is formed in the middle of the bar magnet, and the bar magnet is fixed on the rotating shaft; wherein,,

the driving end of the driving mechanism is fixedly connected with the rotating shaft so as to drive the rotating shaft to rotate and drive the bar magnet to rotate from a vertical state to a horizontal state.

3. The permanent magnet lifting appliance according to claim 2, wherein the driving mechanism comprises a telescopic push rod and a pull rod, the telescopic push rod comprises a fixed end and a connecting end, the fixed end of the telescopic push rod is fixed at the top of the shell, the connecting end of the telescopic push rod is hinged with one end of the pull rod, and the other end of the pull rod is fixedly connected with the rotating shaft.

4. The permanent magnet lifting appliance according to claim 3, further comprising a regulating mechanism, wherein the regulating mechanism comprises a receiver for receiving signals, a contactor for transmitting signals and a power module, the receiver, the contactor and the power module are all fixed on the top of the shell, and the contactor is electrically connected with the telescopic push rod.

5. The permanent magnet lifting appliance according to claim 2, wherein each magnetic attraction unit comprises a plurality of magnetic blocks which are arranged at intervals along the width of the shell, and the number of the strip magnets is corresponding to the number of the magnetic blocks in each magnetic attraction unit.

6. The permanent magnet lifting appliance according to claim 5, wherein the number of the magnetic blocks in each magnetic attraction unit is two.

7. The permanent magnet lifting appliance according to claim 1, wherein the bottom of the housing is provided with a V-shaped groove recessed inwards.

8. The permanent magnet lifting appliance of claim 1, further comprising a lifting lug, wherein the lifting lug is arranged above the housing and is fixedly connected with the housing.

9. The permanent magnet lifting appliance according to claim 3, wherein a supporting steel plate is arranged in the middle of the shell, a through hole for the telescopic push rod to penetrate through is formed in the supporting steel plate, and the diameter of the through hole is larger than that of the telescopic push rod.

10. A permanent magnet lifting appliance according to claim 3, wherein the telescopic distance of the telescopic push rod is 110 mm-130 mm.