CN205638311U

CN205638311U - A electromagnetism grabbing device for picking up ferromagnetism article

Info

Publication number: CN205638311U
Application number: CN201620439264.1U
Authority: CN
Inventors: 陈晓新
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-16
Filing date: 2016-05-16
Publication date: 2016-10-12
Anticipated expiration: 2026-05-16

Abstract

The utility model provides an electromagnetism grabbing device for picking up ferromagnetism article belongs to the mechanical equipment field, include base, cable, column electro -magnet, block piece and chucking spare, be equipped with a plurality of fixing hole in the base, block and install in fixing hole, block that the piece is equipped with the taper hole that the diameter reduces gradually from top to bottom, the conical surface that the surface of chucking spare from top to bottom reduces for the diameter gradually, it is downthehole that chucking spare assigns into the taper, chucking spare, stop and be equipped with the central through hole on the piece that in the column electro -magnet assigned into the central through hole, the cable on the one hand and base fixed connection, on the other hand and many ferroelectric connections of column electromagnetism. The utility model provides an electromagnetism grabbing device, even the upper surface of junk is non planar formation, the bottom homoenergetic of many column electro -magnet enough acts on the upper surface of junk, and is big with the area of contact of junk, can provide great magnetic attraction after the circular telegram, consequently, can pick up shape complicacy, junk that the quality is big.

Description

For picking up the electromagnetism grabbing device of ferromagnetism object

Technical field

This utility model relates to technical field of mechanical equipment, particularly relates to a kind of electromagnetism for picking up ferromagnetism object and captures dress Put.

Background technology

In fields such as oil, natural gas, coal bed gas, shale gas, geothermal wells, it is required to carry out drilling well, completion, well workover work Industry.When workman carries out operation in well, often generating tool (such as drill bit, junk mill, weighted lever, fire rod, steel wire instrument, Wireline tool etc.) fall into the accident in shaft bottom, if manually picked up, not only efficiency is low, and has certain danger, therefore, Prior art typically completes to pick up by gripper equipment.

Gripper of the prior art, simulates the action of hands or pawl, enters junk generally by the deformation of gripper Row captures.

Such as, (patent name is the utility model patent of the earlier application of Application No. CN200720156893.4: a kind of Device for fishing drops underground；Filing date: 2007.07.09；) disclose a kind of gripper, refering to Fig. 1, this mechanical gripping includes:

Salvage quiet pawl, salvage pawl, salvage quiet pawl and salvage about pawl corresponding, salvage quiet pawl include grasping teeth sheet 3 ＇ and Axle, support rod 2 ＇ of the both sides between grasping teeth sheet 3 ＇ and axle 6 ＇ connects, and salvages pawl and includes grasping teeth sheet and axle sleeve, grasping teeth sheet and axle Both sides between set support rod connects, and the axle sleeve salvaging pawl and the axle salvaging pawl are suitable, salvage the axle sleeve set of pawl At the middle part of the axle salvaging quiet pawl, salvage pawl and the quiet pawl of salvaging passes through axle 6 ＇ and the cooperation of axle sleeve 5 ＇, can relatively rotate, Salvaging and be welded with quiet bar 1 ＇ in the middle part of the grasping teeth sheet of quiet pawl, the quiet bar 1 ＇ other end is welded on the top of axle 6 ＇ and turns around dynamic salvaging pawl Side, salvages and is welded with lever 4 ＇ in the middle part of the grasping teeth sheet of pawl, and the lever 4 ＇ other end is welded on the top of axle sleeve 5 ＇ turning around and beats Drag for quiet pawl side.

During use, it is to have landing lifting rope and promote lifting rope respectively at landing carrying handle and lifting carrying handle.User hauls landing Lifting rope, puts into down-hole, due to gravity, salvages and opens between quiet pawl and the grasping teeth sheet salvaging pawl, salvages when shaft bottom foreign material enter Time between quiet pawl and the grasping teeth sheet salvaging pawl, unclamp landing lifting rope, meanwhile, up sling promoting lifting rope, salvage pawl Along with axle rotates, the grasping teeth sheet salvaging quiet pawl and salvaging pawl closes up, and foreign material are just locked by two grasping teeth sheets, can be beaten by junk Drag for up.

In this utility model, closed up by the grasping teeth sheet of the quiet pawl of salvaging and salvaging pawl and junk is captured, right The requirement of environment is higher (in requiring the appropriate depth of well, well, visibility is good), and requires the technical merit of workman the most relatively High, it has to be possible to by the peristome alignment junk controlling to salvage quiet pawl with salvage pawl that landing lifting rope is stable, additionally, also want The volume seeking junk is moderate, and otherwise pawl is difficult to capture.

And in prior art, there is also another kind of electromagnetism pick-up unit, refering to Fig. 2, its operation principle is, utilizes pull rope Electric magnet 8 ＇ is delivered to shaft bottom by 7 ＇, and after electric magnet 8 ＇ energising, electric magnet 8 ＇ utilizes the junk in magnetic absorption shaft bottom.

Compared to traditional gripper, owing to there is magnetic force, the whereabouts accuracy requirement of electric magnet is relatively low, and electromagnetism picks up dress The grasping movement put is relatively simple, and operation easier is relatively low；And the junk of arbitrary size can be captured.

But electromagnetism pick-up unit of the prior art, its electric magnet 8 ＇ is discoid, when this shape acts on plane, Bigger magnetic attraction can be provided；But, if junk is non-planar structure, such as, spherical junk 9 ＇ as shown in Figure 2, Disc-shaped structure is the least with the contact area of spherical junk 9 ＇, and the magnetic attraction being provided that is less, therefore, it is possible to the junk picked up Weight is relatively low；And be susceptible to junk secondary and fall.

In sum, a kind of electricity that can pick up quality ferromagnetism object big, in irregular shape it is badly in need of currently on the market Magnetic grabbing device.

Utility model content

The purpose of this utility model is to provide one to pick up quality is big, surface is nonplanar structure or shape not The electromagnetism grabbing device of the ferromagnetism object of rule.

This utility model provides a kind of electromagnetism grabbing device for picking up ferromagnetism object, including:

Pedestal, cable, many column electric magnet, multiple block piece, multiple Fastener and multiple elastic parts；

Being provided with multiple fixed via in described pedestal, described block piece is arranged in fixed via, described block piece interior Portion is provided with the tapered hole that diameter is from top to bottom gradually reduced；The outer surface of described Fastener is that diameter is from top to bottom gradually reduced The conical surface, described Fastener assigns in tapered hole；

Described elastic parts is fixed on the top of fixed via, and the bottom of elastic parts is against the end of Fastener and makes clamping Part is close to tapered hole；

Described elastic parts, Fastener and block piece are provided with central through hole, and described column electric magnet assigns into center In through hole, described cable is on the one hand fixing with pedestal to be connected, and on the other hand electrically connects with many column electric magnet.

Further, described block piece is the elastic baffle ring that internal diameter is from top to bottom gradually reduced；Described Fastener is at least The first oblique cone block that three top is wide, bottom is narrow, multiple first oblique cone blocks are fixed on tapered hole in mode annular, equally spaced In, the top of multiple first oblique cone blocks is concordant.

Further, block piece is the second oblique cone block that at least three top is narrow, bottom is wide, and multiple second oblique cone blocks are with ring Shape, equally spaced mode are fixed in fixed via；Described Fastener is the elastic cone that external diameter is from top to bottom gradually reduced.

Further, described block piece and Fastener are rubber parts or silica gel part.

Further, described elastic parts includes closure plug and spring；

Described closure plug is by thick bar portion and is fixed on the thin rod part of bottom, thick bar portion and constitutes, and described thick bar is arranged on fixing The top of through hole；Described spring assigns on thin rod part, and one end of described spring is against the bottom in thick bar portion, and the other end is against card The top of tight part.

Further, the top of described fixed via is provided with female thread, and described thick bar portion is provided with adaptive with female thread External screw thread.

Further, this electromagnetism grabbing device also includes that insulation crust body, the top of described shell body are provided with through wires hole, the end End is provided with uncovered；Described pedestal is arranged on the uncovered interior of shell；Described cable is connected to the top of shell and through wiring hole.

Further, described shell body is made up of conic tube and cylindrical tube, and described pedestal is discoid；Described cable Including many electric connection lines and the overcoat that is wrapped in many electric connection line outer layers, the top of described overcoat and conic tube is even Connecing, many electric connection lines are through wiring hole.

Further, the outside of described shell body is fixed with illuminating lamp, and described cable is electrically connected with illuminating lamp.

Further, the top of described column electric magnet is noses, and the size of described noses is more than central through hole Size.

Compared to prior art, the electromagnetism grabbing device for picking up ferromagnetism object that this utility model provides, have Following advantage:

1, by cooperating of block piece, Fastener and column electric magnet, enable column electric magnet opposite base Move upward, so that the bottom of column electric magnet acts on the upper surface of junk；And column electric magnet opposite base moves downward Time, column electric magnet can be held, therefore, it is possible to stable lifting junk；

2, even if the upper surface of junk is nonplanar structure, the bottom of many column electric magnet all can act on junk Upper surface, big with the contact area of junk, bigger magnetic attraction can be provided after energising；Therefore, it is possible to pick up complex-shaped, matter Measure big junk；

3, it is provided with elastic parts, elastic parts can be when pedestal and column electric magnet geo-stationary, by compressing downwards Fastener, makes Fastener shrink and grips column electric magnet, it is to avoid column electric magnet departs from pedestal；

4, use the mode sticking of magnetic attraction to fix junk, the accuracy of manipulation is required relatively low, it is easy to operation.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, below by right In detailed description of the invention or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below In accompanying drawing be embodiments more of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the perspective view of device for fishing drops underground of the prior art；

Fig. 2 is the operation principle schematic diagram of electromagnetism pick-up unit of the prior art；

Fig. 3 is the profile of the front view of electromagnetism pick-up unit of the present utility model；

Fig. 4 is the three-dimensional structure diagram of the pedestal of the electromagnetism pick-up unit shown in Fig. 3；

Fig. 5 is the profile at fixed via of the electromagnetism pick-up unit shown in Fig. 3；

Fig. 6 is block piece and the matching relationship schematic diagram of Fastener in first embodiment of the present utility model；

Fig. 7 is the matching relationship schematic diagram of block piece in the second embodiment of the present utility model Yu Fastener.

Reference:

1 ＇-quiet bar；2 ＇-support rod；3 ＇-grasping teeth sheet；

4 ＇-lever；5 ＇-axle sleeve；6 ＇-axle；

7 ＇-pull rope；8 ＇-electric magnet；9 ＇-spherical junk；

1-pedestal；2-cable；3-column electric magnet；

4-elastic parts；5-block piece；6-Fastener；

7-shell body；8-illuminating lamp；

11-fixed via；21-overcoat；22-electric connection line；

31-noses；41-blocks plug；42-spring；

51-elasticity baffle ring；52-the second oblique cone block；61-the first oblique cone block；

62-elasticity cone；71-conic tube；72-cylindrical tube；

411-thick bar portion；412-thin rod part.

Detailed description of the invention

Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described Embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, this The every other embodiment that field those of ordinary skill is obtained under not making creative work premise, broadly falls into this practicality Novel protected scope.

In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term Directly ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, be only Must have specific for the ease of describing this utility model and simplification description rather than instruction or the device of hint indication or element Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.

In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Language concrete meaning in this utility model.

Fig. 1 is the perspective view of device for fishing drops underground of the prior art；Fig. 2 is electricity of the prior art The operation principle schematic diagram of magnetic pick-up unit；Fig. 3 is the front view of the first embodiment of electromagnetism pick-up unit of the present utility model； Fig. 4 is the three-dimensional structure diagram of the pedestal of the electromagnetism pick-up unit shown in Fig. 3；Fig. 5 is electromagnetism pick-up unit of the present utility model First embodiment is at the profile of fixed via；Fig. 6 is the joining of block piece and Fastener in first embodiment of the present utility model Conjunction relation schematic diagram；Fig. 7 is the matching relationship schematic diagram of block piece in the second embodiment of the present utility model Yu Fastener.

As seen in figures 3-6, the first embodiment that this utility model provides,

This electromagnetism grabbing device being used for picking up ferromagnetism object, including:

Pedestal 1, cable 2, many column electric magnet 3, multiple block piece 5, multiple Fastener 6 and multiple elastic parts 4；

The elastic baffle ring 51 that block piece 5 is from top to bottom gradually reduced for internal diameter, i.e. elastic baffle ring 51 is provided with diameter by up to Under the tapered hole that is gradually reduced；Fastener 6 is the first oblique cone block 61 that at least three top is wide, bottom is narrow, multiple first oblique cones Block 61 is fixed in tapered hole in mode annular, equally spaced, and the top of multiple first oblique cone blocks 61 is concordant, multiple first oblique cones Block 61 constitutes the conical surface that diameter is from top to bottom gradually reduced, interrupted；

Elastic parts 4 is fixed on the top of fixed via 11, and the bottom of elastic parts 4 is against the end of Fastener 6 and makes card Tight part 6 is close to tapered hole；

Elastic parts 4, Fastener 6 and block piece 5 are provided with central through hole, and column electric magnet 3 assigns into central through hole In, cable 2 one aspect is fixing with pedestal 1 to be connected, and on the other hand electrically connects with many column electric magnet 3.

The electromagnetism grabbing device for picking up ferromagnetism object that this utility model provides, its operation principle is as follows:

Column electric magnet 3 assigns in the central through hole of Fastener 6 and elastic parts 4, and the bottom of elastic parts 4 is against card The top of tight part 6, in making the bottom of Fastener 6 assign into the tapered hole of block piece 5 and have the trend moved downward, tapered hole pair The formation inward pressure of Fastener 6, makes Fastener 6 shrink, and central through hole diameter reduces clamping column electric magnet 3；

After pedestal 1 is abandon well, the bottom of the column electric magnet 3 together fallen with pedestal 1 impinges upon the junk of abnormity On, now, pedestal 1 continues to fall, and column electric magnet 3 opposite base 1 moves upward, and column electric magnet 3 is by frictional force band Dynamic Fastener 6 moves upward, elasticity of compression assembly 4 simultaneously；

Fastener 6 moves upward, and the chucking power of Fastener 6 is diminished by tapered hole, therefore, and column electric magnet 3 resistance of motion Less, the bottom of each column electric magnet 3 can be close on abnormity junk, and many column electric magnet 3 present what height rose and fell Shape；After Wen Ding, elastic parts 4 stretches, and again makes Fastener 6 shrink, and central through hole diameter reduces clamping column electric magnet 3；

Cable 2 is energized, and produces magnetic attraction, the junk of stable sticking ferromagnetism material after column electric magnet 3 energising；

When quickly pulling up cable 2, pedestal 1 moves upward, and column electric magnet 3 opposite base 1 moves downward, column Electric magnet 3 drives Fastener 6 to move downward by frictional force；Tapered hole to Fastener 6 pressure increase, central through hole is more firm Solid clamping column electric magnet 3, it is possible to by junk smoothly from shaft bottom take out.

1, by cooperating of block piece 5, Fastener 6 and column electric magnet 3, make the column electric magnet 3 can be relative Pedestal 1 moves upward, so that the bottom of column electric magnet 3 acts on the upper surface of junk；And column electric magnet 3 opposite base 1 When moving downward, column electric magnet 3 can be held, therefore, it is possible to stable lifting junk；

2, even if the upper surface of junk is nonplanar structure, the bottom of many column electric magnet 3 all can act on junk Upper surface, big with the contact area of junk, bigger magnetic attraction can be provided after energising；Therefore, it is possible to pick up complex-shaped, The junk that quality is big；

3, it is provided with elastic parts 4, elastic parts 4 can be when pedestal 1 and column electric magnet 3 geo-stationary, by downwards Compress Fastener 6, make Fastener 6 shrink and grip column electric magnet 3, it is to avoid column electric magnet 3 departs from pedestal 1；

In the present embodiment, block piece 5 and Fastener 6 are rubber parts or silica gel part.

Rubber parts or silica gel part are respectively provided with good elasticity, make Fastener 6 can shrink to clamp column electric magnet 3； Meanwhile, rubber parts or silica gel part are respectively provided with bigger coefficient of friction, using the teaching of the invention it is possible to provide bigger frictional force.

Certainly, this is only a specific embodiment of the present utility model, block piece 5 of the present utility model and Fastener 6 Concrete structure is not limited thereto, it is possible to for other structures, as long as being provided that bigger frictional force is with fixing column electric magnet 3 i.e. Can.

In the present embodiment, elastic parts 4 includes closure plug 41 and spring 42；

Closure plug 41 is by thick bar portion 411 and is fixed on the thin rod part 412 of bottom, thick bar portion 411 and constitutes, and thick bar is arranged on The top of fixed via 11；Spring 42 assigns on thin rod part 412, and one end of spring 42 is against the bottom in thick bar portion 411, another End is against the top of Fastener 6.

Thick bar portion 411 blocks and is fixed at the top end opening of fixed via 11, thin rod part 412 carry out spring 42 solid Determine and guide, enabling the elastic force of spring 42 to act perpendicularly to the top of Fastener 6, and then make the bottom of Fastener 6 be stuck in resistance In the tapered hole of block piece 5.

The elastic force of spring 42 is moderate:

Elastic force is excessive, and the degree of depth of the tapered hole that Fastener 6 enters block piece 5 is the deepest, and central through hole is to column electric magnet 3 Chucking power is excessive, and when pedestal 1 falls, column electric magnet 3 can not move upward by opposite base 1 freely, makes many columns The bottom of electric magnet 3 can not all be in close contact with the upper surface of junk；

Elastic force is too small, and the degree of depth of the tapered hole that Fastener 6 enters block piece 5 is the most shallow, and central through hole is to column electric magnet 3 Chucking power is too small, during less than column electric magnet 3 gravity, and the fixing column electric magnet 3 that pedestal 1 i.e. can not be stable.

Therefore, the specification of spring 42 strictly to select, it is ensured that its elastic force provided is moderate.In order to reduce the selection of spring 42 Difficulty, also avoids simultaneously, and after using a period of time, the elastic force of spring 42 changes, in the present embodiment, and fixed via 11 Top is provided with female thread, and thick bar portion 411 is provided with the external screw thread adaptive with female thread.

By the distance between bottom and the top of Fastener 6 in rotation thick bar portion 411, i.e. adjustable thick bar portion 411, enter And when adjusting pedestal 1 with column electric magnet 3 geo-stationary, the elastic force that spring 42 provides.

In the present embodiment, this electromagnetism grabbing device also includes that insulation crust body 7, the top of shell body 7 are provided with through wires hole, Bottom is provided with uncovered；Pedestal 1 is arranged on the uncovered interior of shell；Cable 2 is connected to the top of shell and through wiring hole.

Shell body 7 is made up of isolation material, it is possible to play good insulation effect, it is to avoid electric shock fault occurs, simultaneously outside Housing 7 can facilitate cable 2 to be connected with pedestal 1.

Shell body 7 is for be made up of conic tube 71 and cylindrical tube 72, and profile is clock (for tapping the musical instrument of generation) shape； Pedestal 1 is discoid；Cable 2 includes many electric connection lines 22 and is wrapped in the overcoat 21 of many electric connection line 22 outer layers, outward Set 21 is connected with the top of conic tube 71, and many electric connection lines 22 are through wiring hole.

Pedestal 1 is designed as discoid, it is possible in identical surface area, arranges greater number of fixed via 11, it is possible to Accommodating more column electric magnet 3, makes greater number of column electric magnet 3 and junk upper surface.

In the present embodiment, the outside of shell body 7 is fixed with illuminating lamp 8, and cable 2 is electrically connected with illuminating lamp 8.When in well Visibility poor time, by illuminating lamp 8 provide light, it is possible to facilitate operator's lowering device more accurately.

In the present embodiment, the top of column electric magnet 3 is noses 31, and the size of noses 31 is more than central through hole Size.

Noses 31 can be stuck in the end of central through hole, it is to avoid column electric magnet 3 completely extends across central through hole and pedestal 1 Separate.

Refering to Fig. 3-5 and Fig. 7, the second embodiment that this utility model provides, in this embodiment, it is used for picking up ferromagnetic The electromagnetism grabbing device of property object, including:

Being provided with multiple fixed via 11 in pedestal 1, block piece 5 is arranged in fixed via 11, and the inside of block piece 5 is provided with The tapered hole that diameter is from top to bottom gradually reduced；The outer surface of Fastener 6 is the conical surface that diameter is from top to bottom gradually reduced,

Specifically, block piece 5 is the second oblique cone block 52 that at least three top is narrow, bottom is wide, multiple second oblique cone blocks 52 are fixed in fixed via 11 in mode annular, equally spaced；The elastic cone that Fastener 6 is from top to bottom gradually reduced for external diameter Shape body 62.

Second embodiment is with the difference of first embodiment:

In first embodiment, block piece 5 is complete parts, and the parts that Fastener 6 is multiple separation；And second In embodiment, block piece 5 is the parts of multiple separation, and Fastener 6 is complete parts.

In first embodiment, Fastener 6 is designed as multiple separable first oblique cone block 61, multiple first oblique cone block 61 energy Enough relative displacements occurred are bigger, it is possible to the column electric magnet 3 in central through hole is produced bigger chucking power.

Certainly, this is only two specific embodiments of the present utility model, Fastener 6 of the present utility model and block piece 5 Structure is not limited thereto.It practice, Fastener 6 and block piece 5 can also be with individual complete parts, or by multiple Separating component is constituted, as long as the inside of block piece 5 is provided with the tapered hole that diameter is from top to bottom gradually reduced；The appearance of Fastener 6 Face is the conical surface that diameter is from top to bottom gradually reduced.

Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, rather than it is limited System；Although being described in detail this utility model with reference to foregoing embodiments, those of ordinary skill in the art should Understand: the technical scheme described in foregoing embodiments still can be modified by it, or to the most some or all of Technical characteristic carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this practicality new The scope of type each embodiment technical scheme.

Claims

1. the electromagnetism grabbing device being used for picking up ferromagnetism object, it is characterised in that including:

Being provided with multiple fixed via in described pedestal, described block piece is arranged in fixed via, and the inside of described block piece sets There is the tapered hole that diameter is from top to bottom gradually reduced；The outer surface of described Fastener is the cone that diameter is from top to bottom gradually reduced Face, described Fastener assigns in tapered hole；

Described elastic parts is fixed on the top of fixed via, and the bottom of elastic parts is against the end of Fastener makes Fastener tight Patch tapered hole；

Described elastic parts, Fastener and block piece are provided with central through hole, and described column electric magnet assigns into central through hole In, described cable is on the one hand fixing with pedestal to be connected, and on the other hand electrically connects with many column electric magnet.

Electromagnetism grabbing device for picking up ferromagnetism object the most according to claim 1, it is characterised in that described stop Part is the elastic baffle ring that internal diameter is from top to bottom gradually reduced；It is first oblique that described Fastener is that at least three top is wide, bottom is narrow Cone block, multiple first oblique cone blocks are fixed in tapered hole in mode annular, equally spaced, the top flat of multiple first oblique cone blocks Together.

Electromagnetism grabbing device for picking up ferromagnetism object the most according to claim 1, it is characterised in that block piece is The second oblique cone block that at least three top is narrow, bottom is wide, multiple second oblique cone blocks are fixed on fixing in mode annular, equally spaced In through hole；Described Fastener is the elastic cone that external diameter is from top to bottom gradually reduced.

4. according to the electromagnetism grabbing device for picking up ferromagnetism object described in any one of claim 1-3, it is characterised in that Described block piece and Fastener are rubber parts or silica gel part.

Electromagnetism grabbing device for picking up ferromagnetism object the most according to claim 1, it is characterised in that described elasticity Assembly includes closure plug and spring；

Described closure plug is by thick bar portion and is fixed on the thin rod part of bottom, thick bar portion and constitutes, and described thick bar is arranged on fixed via Top；Described spring assigns on thin rod part, and one end of described spring is against the bottom in thick bar portion, and the other end is against Fastener Top.

Electromagnetism grabbing device for picking up ferromagnetism object the most according to claim 5, it is characterised in that described fixing The top of through hole is provided with female thread, and described thick bar portion is provided with the external screw thread adaptive with female thread.

Electromagnetism grabbing device for picking up ferromagnetism object the most according to claim 1, it is characterised in that this electromagnetism is grabbed Fetching is put and is also included insulation crust body, and the top of described shell body is provided with through wires hole, and bottom is provided with uncovered；Described pedestal is arranged on Shell uncovered in；Described cable is connected to the top of shell and through wiring hole.

Electromagnetism grabbing device for picking up ferromagnetism object the most according to claim 7, it is characterised in that described shell Body is made up of conic tube and cylindrical tube, and described pedestal is discoid；Described cable includes many electric connection lines and parcel At the overcoat of many electric connection line outer layers, described overcoat is connected with the top of conic tube, and many electric connection lines are through wiring hole.

9. according to the electromagnetism grabbing device for picking up ferromagnetism object described in claim 7 or 8, it is characterised in that described The outside of shell body is fixed with illuminating lamp, and described cable is electrically connected with illuminating lamp.

Electromagnetism grabbing device for picking up ferromagnetism object the most according to claim 1, it is characterised in that described post The top of shape electric magnet is noses, and the size of described noses is more than the size of central through hole.