CN218145280U - Electromagnetic chuck for hoisting and hoisting steel rail - Google Patents

Abstract

The utility model discloses a rail jack-up handling electromagnet, including the protection box, there is rings protection box upper surface four corners fixed mounting respectively, protection box lower surface both sides fixed mounting has the guard plate, adjustable mounting has first electric push rod in the protection box, fixed surface installs electric turntable under the first electric push rod, electric turntable lower surface demountable installation has the locating plate, four first recesses of group have been seted up to the locating plate upper surface. The utility model discloses possess equipment accessible when adsorbing the railway rail and finish and adjust self equipment mechanism and carry out centre gripping once more to the railway rail to avoid the staff probably to miss when using and touch equipment control switch, thereby lead to electromagnetic chuck to lose magnetism when using, thereby cause the unexpected condition that drops of railway rail, mutually supporting of equipment accessible equipment mechanism when handling railway rail drives the rail and carries out automatic rotation, the advantage of the handling of the railway rail of being convenient for.

Description

Electromagnetic chuck for hoisting and hoisting steel rail

Technical Field

The utility model belongs to the technical field of the rail handling, especially, relate to a rail jack-up handling electromagnetism sucking disc.

Background

Railway rails, in short, rails, tracks, etc., which are used on railway and cooperate with switches to enable trains to travel without steering, are usually composed of two parallel rails fixed on sleepers, ballast under the sleepers, and include road beds, connecting parts of rails, etc., and are disclosed in the publication: CN205590145U, an electromagnetic chuck, which comprises a magnet base, a coil and a magnetic conductive panel, wherein the bottom of the magnet base is provided with a groove, an iron core is arranged in the groove, and the coil is wound on the iron core; the magnetic conductive panel covers the groove and forms an adsorption end of the electromagnetic chuck with the bottom of the magnet seat; the electromagnetic chuck further comprises an air hole, wherein an air outlet of the air hole is located at the adsorption end, and an air inlet is communicated with an external air supply device. The utility model discloses technical scheme can reduce the adsorption affinity between metal work piece and the electromagnet to make things convenient for metal work piece to carry out position correction.

The problems of the technology are that: the equipment of using commonly, when adsorbing the railway rail, the staff probably touched equipment control switch by mistake when using to lead to electromagnet to lose magnetism when using, thereby cause the unexpected condition that drops of railway rail, when the position of the adsorbed railway rail of needs rotation, need rotate the handling of adjusting the loop wheel machine angle railway rail of being not convenient for, therefore we provide a rail jack-up handling electromagnetic chuck.

SUMMERY OF THE UTILITY MODEL

Problem to prior art exists, the utility model provides a rail jack-up handling electromagnetism sucking disc, possess equipment accessible when adsorbing the railway rail and finish and adjust self equipment mechanism and carry out centre gripping once more to the railway rail, thereby avoid the staff probably to miss when using and touch equipment control switch, thereby lead to electromagnet to lose magnetism when using, thereby cause the unexpected condition that drops of railway rail, mutually supporting of equipment accessible equipment mechanism drives the rail and carries out the automation and rotate when handling the railway rail, the advantage of the handling of the railway rail of being convenient for, solved equipment commonly used when adsorbing the railway rail, the staff probably misses when using and touches equipment control switch, thereby lead to electromagnet to lose magnetism when using, thereby cause the unexpected condition that drops of railway rail, when the position of the adsorbed railway rail that needs to rotate, need rotate the problem of the handling of adjusting loop wheel machine angle not convenient to the railway rail.

The utility model discloses a realize like this, a rail jack-up handling electromagnet, including the protection box, protection box upper surface four corners is fixed mounting respectively has rings, protection box lower surface both sides fixed mounting has the guard plate, adjustable mounting has first electric push rod in the protection box, fixed mounting has electric turntable under the first electric push rod, electric turntable lower surface demountable installation has the locating plate, the first recess of four groups has been seted up to the locating plate upper surface, the through-hole has been seted up in the first recess, a plurality of groups's screw hole has been seted up on the locating plate, fixed mounting has the positioning subassembly in the first recess, slidable mounting has the second slider on the positioning subassembly, adjustable being provided with on the second slider prevents falling the subassembly.

As the utility model discloses preferred, a plurality of groups screw are installed to the last screw thread of electric turntable, the cooperation demountable installation that the locating plate passes through screw, electric turntable and screw hole is at the electric turntable lower surface.

As the utility model discloses it is preferred, the positioning component includes four group's motors and bearing frames, motor fixed mounting is in first recess one end, the bearing frame fixed mounting is at the first recess other end, fixed mounting has the threaded rod on the motor output shaft, the threaded rod other end rotates and installs on the bearing frame.

As the utility model discloses it is preferred, slidable mounting has ball bearing on the threaded rod, fixed mounting has first slider on the ball bearing, first slider can slide in the through-hole.

As the utility model discloses it is preferred, fixed mounting has the second slider on the first slider, two sets of second recesses have been seted up to second slider lower surface, be provided with second electric push rod in the second recess.

As the utility model discloses preferred, it includes two sets of regulating plates to prevent falling the subassembly, the standing groove has been seted up on the regulating plate, fixed mounting has first locating piece on the regulating plate, fixed mounting has the second locating piece on the first locating piece, second locating piece one end fixed mounting has third electric push rod, third electric push rod passes the adjustable installation of regulating plate in the standing groove.

As the utility model discloses it is preferred, third electric push rod other end fixed mounting has first concatenation piece and second concatenation piece, fixed mounting has the joint piece on the first concatenation piece, the joint groove has been seted up on the second concatenation piece, the joint groove carries out automatic joint with joint piece accessible regulation third electric push rod.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model can adjust and move the equipment mechanism into the protective box through the first electric push rod when the equipment is used through the design of the protective box, the hanging ring, the protective plate, the first electric push rod, the electric rotary table, the positioning plate, the first groove, the through hole, the threaded hole, the positioning component, the second slide block and the anti-falling component, thereby effectively protecting the equipment which is finished in use, prolonging the service life of the equipment, achieving the effect of quick lifting through the hanging ring when the equipment is used, being convenient for the equipment to use, placing the protective box on the ground when the equipment is adjusted into the protective box, preventing the protective box from directly contacting with the ground by the protective plate, thereby achieving the effect of protecting the protective box, starting the positioning component when the equipment is used, synchronously driving other equipment mechanisms to synchronously adjust the synchronous position when the positioning component is started, make the inside mechanism of equipment can make corresponding regulation as required, make equipment use more high-efficient, can start when using equipment handling rail and prevent falling the subassembly and carry out centre gripping once more to the rail that adsorbs on equipment, thereby avoid the staff probably to touch equipment control switch by mistake when using, thereby lead to electromagnetic chuck to lose magnetism when using, thereby cause the unexpected condition that drops of railway rail, the equipment of having solved commonly used is when adsorbing railway rail, the staff probably touches equipment control switch by mistake when using, thereby lead to electromagnetic chuck to lose magnetism when using, thereby lead to the unexpected condition that drops of railway rail, when the position of adsorbed railway rail needs to be rotated, need rotate the problem of the handling of adjusting the loop wheel machine angle and be not convenient for railway rail.

2. The utility model discloses an electric turntable, the locating plate, the design of screw hole and screw, but make electric turntable drive the locating plate in step when starting and rotate, it can carry out the pivoted effect automatically to have reached the locating plate, the equipment of being convenient for carries out position control to the railway rail, make the staff need not to adjust crane self position at the during operation, and the work efficiency is improved, locating plate accessible electric turntable, the screw hole is installed or is demolishd at the electric turntable lower surface with the cooperation of screw, thereby be convenient for maintenance and the change of equipment mechanism, thereby fund and time consumption when reducing the maintenance equipment.

3. The utility model discloses a design of first recess, positioning component, motor, bearing frame and threaded rod for motor start when positioning component starts, motor output shaft rotates on the bearing frame in step when motor start, thereby has effectively reduced the produced wearing and tearing of threaded rod when rotating, has reached the effect of the life of extension threaded rod.

4. The utility model discloses a through-hole, the threaded rod, first slider and ball bearing's design, make the threaded rod drive ball bearing and first slider position control on the threaded rod in step when rotating, thereby drive first slider in step and carry out position control in the through-hole, the effect that first slider can carry out position control automatically has been reached, design through ball bearing has effectively reduced the friction of first slider when sliding, the effect of extension first slider life has been reached, thereby reduce the frequent fund consumption that damages and bring of equipment mechanism.

5. The utility model discloses a design of first slider, second recess and second electric push rod for first slider also follows first slider in step with second electric push rod and carries out synchronous position control when carrying out position control, and second slider position control finishes the back and can start second electric push rod and reach the effect that can automatically regulated prevent falling the subassembly position.

6. The utility model discloses a prevent falling the design of subassembly, regulating plate, standing groove, first locating piece, second locating piece and third electric push rod for when preventing falling the subassembly and starting the third electric push rod carry out corresponding position control in the standing groove, thereby reach the effect of adjustable equipment part mechanism position, first locating piece and second locating piece can effectively fix third electric push rod, have reached the condition of avoiding third electric push rod unexpected in the use to drop.

7. The utility model discloses a third electricity push rod, first concatenation piece, the second concatenation piece, the design of joint groove and joint piece, make third electricity push rod can drive first concatenation piece and second concatenation piece in step and carry out position control when carrying out position control, reached first concatenation piece and second concatenation piece can carry out the effect of automatic concatenation, through the design of joint groove and joint piece, make first concatenation piece and second concatenation piece joint groove and joint piece also can splice when the concatenation, make the concatenation of first concatenation piece and second concatenation piece compacter, difficult pine takes off.

Drawings

Fig. 1 is a schematic view of the overall structure of the apparatus provided by the embodiment of the present invention;

fig. 2 is a schematic bottom view of a part of the structure of the apparatus provided by the embodiment of the present invention;

fig. 3 is a schematic view of an electric turntable of the apparatus provided by the embodiment of the present invention;

fig. 4 is a schematic view of an overall structure of an apparatus positioning assembly provided by an embodiment of the present invention;

fig. 5 is a schematic structural view of an apparatus positioning plate provided by an embodiment of the present invention;

fig. 6 is a schematic bottom view of a positioning plate of an apparatus provided in an embodiment of the present invention;

fig. 7 is a schematic view of the overall structure of the anti-drop device assembly according to the embodiment of the present invention;

fig. 8 is a schematic view of the overall structure of the equipment protecting box according to the embodiment of the present invention.

In the figure: 1. a protective box; 2. a hoisting ring; 3. a protection plate; 4. a first electric push rod; 5. an electric turntable; 6. positioning a plate; 7. a first groove; 8. a through hole; 9. a threaded hole; 10. a positioning component; 1001. a motor; 1002. a bearing seat; 1003. a threaded rod; 1004. a first slider; 1005. a ball bearing; 11. a second slider; 12. a second groove; 13. a second electric push rod; 14. an anti-drop assembly; 1401. an adjusting plate; 1402. a placement groove; 1403. a first positioning block; 1404. a second positioning block; 1405. a third electric push rod; 1406. a first splice block; 1407. a second splice block; 1408. a clamping groove; 1409. a clamping block; 15. and (4) screws.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

The structure of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, the embodiment of the utility model provides a pair of rail hoisting electromagnet, including protection box 1, 1 upper surface four corners of protection box is fixed mounting respectively has rings 2, 1 lower surface both sides fixed mounting of protection box has guard plate 3, adjustable mounting has first electric putter 4 in the protection box 1, fixed mounting has electric turntable 5 under the first electric putter 4, 5 lower surface demountable installation of electric turntable has locating plate 6, four first recesses 7 of group have been seted up to 6 upper surfaces of locating plate, through-hole 8 has been seted up in the first recess 7, a plurality of groups screw hole 9 have been seted up on locating plate 6, fixed mounting has positioning assembly 10 in the first recess 7, slidable mounting has second slider 11 on positioning assembly 10, adjustable being provided with on the second slider 11 prevents falling subassembly 14.

Adopt above-mentioned scheme: through protection box 1, rings 2, guard plate 3, first electric push rod 4, electric turntable 5, locating plate 6, first recess 7, through-hole 8, screw hole 9, positioning assembly 10, second slider 11 and the design of anti-drop assembly 14, make equipment accessible first electric push rod 4 reach the equipment mechanism when using and all can adjust and remove to protection box 1 in, thereby effectively protect the equipment that finishes using, increase equipment life, equipment accessible rings 2 reaches the effect of lifting by crane fast when using, the equipment of being convenient for uses, can place protection box 1 subaerial when equipment mechanism adjusts to protection box 1, guard plate 3 can avoid protection box 1 and ground to carry out direct contact this moment, thereby protection box 1's effect has been reached, equipment accessible starts positioning assembly 10 when using, can drive other equipment mechanism in step and carry out synchronous position control when positioning assembly 10 starts, make equipment inner mechanism can make corresponding regulation according to the use needs, make equipment use more efficient, can start to adsorb the rail on anti-drop assembly 14 when using and carry out the clamping assembly, thereby avoid the electromagnetic suction cup to cause the magnetic switch of the railway to adsorb the railway to adjust the condition that the rail when the equipment is used, thereby the magnetic switch that the railway can cause the railway to the wrong suction cup that the rail to drop when the magnetic control of the railway when the equipment to the railway when using, thereby the railway equipment to cause the railway to adsorb the railway to the magnetic suction cup that the railway to drop.

Referring to fig. 1, a plurality of sets of screws 15 are threadedly mounted on the electric turntable 5, and the positioning plate 6 is detachably mounted on the lower surface of the electric turntable 5 through the cooperation of the screws 15, the electric turntable 5 and the threaded holes 9.

Adopt above-mentioned scheme: through electric turntable 5, locating plate 6, the design of screw hole 9 and screw 15, but make electric turntable 5 drive locating plate 6 in step when starting to rotate, but it can carry out the pivoted effect automatically to have reached locating plate 6, the equipment of being convenient for carries out position control to the railway rail, make the staff need not to adjust crane self position at the during operation, improve work efficiency, locating plate 6 accessible electric turntable 5, screw hole 9 is installed or is demolishd at electric turntable 5 lower surface with the cooperation of screw 15, thereby be convenient for maintenance and the change of equipment mechanism, thereby fund and time consumption when reducing the maintenance equipment.

Referring to fig. 4, the positioning assembly 10 includes four sets of motors 1001 and bearing seats 1002, the motors 1001 are fixedly installed at one end in the first groove 7, the bearing seats 1002 are fixedly installed at the other end of the first groove 7, a threaded rod 1003 is fixedly installed on an output shaft of the motors 1001, and the other end of the threaded rod 1003 is rotatably installed on the bearing seats 1002.

The scheme is adopted: through the design of first recess 7, positioning component 10, motor 1001, bearing frame 1002 and threaded rod 1003 for motor 1001 starts when positioning component 10 starts, and motor 1001 output shaft drives threaded rod 1003 in step and rotates on bearing frame 1002 when motor 1001 starts, thereby has effectively reduced the produced wearing and tearing of threaded rod 1003 when rotating, has reached the effect of the life of extension threaded rod 1003.

Referring to fig. 4, a ball bearing 1005 is slidably mounted on the threaded rod 1003, a first slider 1004 is fixedly mounted on the ball bearing 1005, and the first slider 1004 can slide in the through hole 8.

Adopt above-mentioned scheme: through-hole 8, threaded rod 1003, the design of first slider 1004 and ball bearing 1005, make threaded rod 1003 drive ball bearing 1005 and first slider 1004 position control on threaded rod 1003 in step when rotating, thereby drive first slider 1004 in step and carry out position control in through-hole 8, the effect that first slider 1004 can carry out position control automatically has been reached, design through ball bearing 1005 has effectively reduced the friction of first slider 1004 when sliding, the effect of the first slider 1004 life of extension has been reached, thereby reduce the capital consumption that the frequent damage of mechanism of equipment brought.

Referring to fig. 4, a second slider 11 is fixedly mounted on the first slider 1004, two sets of second grooves 12 are formed in the lower surface of the second slider 11, and a second electric push rod 13 is disposed in the second grooves 12.

Adopt above-mentioned scheme: through the design of the first slider 1004, the second slider 11, the second groove 12 and the second electric push rod 13, the second slider 11 and the second electric push rod 13 synchronously follow the first slider 1004 to perform synchronous position adjustment when the first slider 1004 performs position adjustment, and the second electric push rod 13 can be started to achieve the effect of automatically adjusting the position of the anti-drop assembly 14 after the position adjustment of the second slider 11 is completed.

Referring to fig. 7, the falling prevention assembly 14 includes two sets of adjustment plates 1401, a placement groove 1402 is disposed on the adjustment plates 1401, a first positioning block 1403 is fixedly mounted on the adjustment plates 1401, a second positioning block 1404 is fixedly mounted on the first positioning block 1403, a third electric push rod 1405 is fixedly mounted at one end of the second positioning block 1404, and the third electric push rod 1405 passes through the adjustment plates 1401 and is adjustably mounted in the placement groove 1402.

Adopt above-mentioned scheme: through the design of falling prevention component 14, regulating plate 1401, standing groove 1402, first locating piece 1403, second locating piece 1404 and third electric push rod 1405, third electric push rod 1405 carries out corresponding position control in standing groove 1402 when falling prevention component 14 starts, thereby reach the effect of adjustable equipment part mechanism position, first locating piece 1403 and second locating piece 1404 can effectively fix third electric push rod 1405, reached the condition of avoiding third electric push rod 1405 unexpected in the use to drop.

Referring to fig. 7, the other end of the third electric push rod 1405 is fixedly mounted with a first splicing block 1406 and a second splicing block 1407, the first splicing block 1406 is fixedly mounted with a clamping block 1409, the second splicing block 1407 is provided with a clamping groove 1408, and the clamping groove 1408 and the clamping block 1409 can be automatically clamped by adjusting the third electric push rod 1405.

Adopt above-mentioned scheme: through the design of the third electric push rod 1405, the first splicing block 1406, the second splicing block 1407, the clamping groove 1408 and the clamping block 1409, the third electric push rod 1405 can synchronously drive the first splicing block 1406 and the second splicing block 1407 to perform position adjustment when performing position adjustment, the effect that the first splicing block 1406 and the second splicing block 1407 can be automatically spliced is achieved, through the design of the clamping groove 1408 and the clamping block 1409, the clamping groove 1408 and the clamping block 1409 can also be spliced when the first splicing block 1406 and the second splicing block 1407 are spliced, the splicing of the first splicing block 1406 and the second splicing block 1407 is more compact, and the loosening is not easy.

The utility model discloses a theory of operation:

when the device is used, the device can reach the effect that the device mechanisms can be adjusted and moved into the protective box 1 through the first electric push rod 4 when the device is used, so that the device is effectively protected after being used, the service life of the device is prolonged, the device can reach the effect of quickly lifting through the lifting ring 2 when the device is used, the device is convenient to use, the protective box 1 can be placed on the ground when the device mechanism is adjusted into the protective box 1, at the moment, the protective plate 3 can avoid the protective box 1 from directly contacting with the ground, so that the protective box 1 is protected, the device can reach the effect of protecting the protective box 1, the positioning component 10 can be started when the device is used, the positioning component 10 can synchronously drive other device mechanisms to carry out synchronous position adjustment when being started, the internal mechanism of the device can correspondingly adjust according to the use requirement, the device can be more efficiently used, the anti-falling component 14 can be started to clamp the steel rail adsorbed on the device again when the device is used for lifting the steel rail, thereby avoiding the situation that the electromagnetic chuck loses magnetism when in use and causes the railway steel rail to accidentally drop due to the fact that the worker can mistakenly touch the equipment control switch when in use, solving the problem that the electromagnetic chuck loses magnetism when in use and causes the railway steel rail to accidentally drop due to the fact that the common equipment absorbs the railway steel rail and the worker can mistakenly touch the equipment control switch when in use, and when the position of the absorbed railway steel rail needs to be rotated, the hoisting of the railway steel rail is inconvenient due to the fact that the angle of the hoisting machine needs to be adjusted by rotating, the positioning plate 6 can be synchronously driven to rotate when the electric turntable 5 is started, the effect that the positioning plate 6 can automatically rotate is achieved, the position of the railway steel rail can be conveniently adjusted by the equipment, and the worker does not need to adjust the position of the crane when in work, the working efficiency is improved, the positioning plate 6 can be installed or removed on the lower surface of the electric rotary disc 5 through the cooperation of the electric rotary disc 5, the threaded hole 9 and the screw 15, the motor 1001 is started when the positioning component 10 is started, the output shaft of the motor 1001 synchronously drives the threaded rod 1003 to rotate on the bearing block 1002 when the motor 1001 is started, so that the abrasion of the threaded rod 1003 during rotation is effectively reduced, the effect of prolonging the service life of the threaded rod 1003 is achieved, the threaded rod synchronously drives the ball bearing 1005 and the first slider 1004 to perform position adjustment on the threaded rod 1003, the first slider 1004 is synchronously driven to perform position adjustment in the through hole 8, the effect of automatically performing position adjustment on the first slider 1004 is achieved, the friction of the first slider 1004 during sliding is effectively reduced through the design of the ball bearing 1005, the effect of prolonging the service life of the first slider 1004 is achieved, the second slider 11 and the second electric push rod 13 can synchronously follow the first slider 1004 to perform synchronous position adjustment along with the first slider 1004 when position adjustment is performed, the effect of automatically adjusting the second electric push rod 13 can be achieved after the position adjustment of the second slider 11 is completed, the adjustment, the effect of automatically adjusting component 14014 can be achieved, the effect of synchronously adjusting the third electric push rod 1405 can be achieved, the adjustment of the third electric push rod 1407, the third electric push rod 1407 can be achieved, the clamping block 1407, the clamping block 14014, the clamping block is achieved, the clamping effect of the third positioning block 1405 can be achieved, the third positioning block 1405 can be achieved through the clamping block 1407, the clamping and the clamping block 1405 can be achieved, make first splice piece 1406 and second splice piece 1407 joint slot 1408 and joint piece 1409 also can splice when the concatenation, make the concatenation of first splice piece 1406 and second splice piece 1407 compacter, difficult pine takes off.

In summary, the following steps: this steel rail jack-up handling electromagnetism sucking disc, through protection box 1, rings 2, guard plate 3, first electric putter 4, electric turntable 5, locating plate 6, first recess 7, through-hole 8, screw hole 9, positioning component 10, motor 1001, bearing frame 1002, threaded rod 1003, first slider 1004, ball bearing 1005, second slider 11, second recess 12, second electric putter 13, prevent falling subassembly 14, regulating plate 1401, standing groove 1402, first locating piece 1403, second locating piece 1404, third electric putter 1405, first splice piece 1406, second splice piece 1407, joint groove 1408, mutually supporting of joint piece 1409 and screw 15, the equipment of having solved commonly used is when adsorbing the railway rail, the staff probably touches equipment control switch by mistake when using, thereby lead to the electromagnetism sucking disc to lose magnetism when using, thereby cause the unexpected condition that drops of railway rail, when the position that has adsorbed the railway rail needs to rotate, need rotate the problem of the handling of regulation loop wheel angle not being convenient for the railway rail.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a rail jack-up handling electromagnet, includes protection box (1), its characterized in that: protection box (1) upper surface four corners is fixed mounting respectively has rings (2), protection box (1) lower surface both sides fixed mounting has guard plate (3), adjustable installation has first electric push rod (4) in protection box (1), fixed surface installs electric turntable (5) under first electric push rod (4), electric turntable (5) lower surface demountable installation has locating plate (6), four first recesses (7) of group have been seted up to locating plate (6) upper surface, through-hole (8) have been seted up in first recess (7), a plurality of groups screw hole (9) have been seted up on locating plate (6), fixed mounting has positioning subassembly (10) in first recess (7), slidable mounting has second slider (11) on positioning subassembly (10), adjustable being provided with on second slider (11) prevents falling subassembly (14).

2. A steel rail hoisting electromagnetic chuck as claimed in claim 1, wherein: a plurality of groups of screws (15) are installed on the electric turntable (5) in a threaded mode, and the positioning plate (6) is detachably installed on the lower surface of the electric turntable (5) through the matching of the screws (15), the electric turntable (5) and the threaded holes (9).

3. A steel rail lifting electromagnetic chuck as claimed in claim 1, wherein: the positioning component (10) comprises four groups of motors (1001) and bearing seats (1002), the motors (1001) are fixedly mounted at one ends of the first grooves (7), the bearing seats (1002) are fixedly mounted at the other ends of the first grooves (7), threaded rods (1003) are fixedly mounted on output shafts of the motors (1001), and the other ends of the threaded rods (1003) are rotatably mounted on the bearing seats (1002).

4. A steel rail hoisting electromagnetic chuck as claimed in claim 3, wherein: the threaded rod (1003) is provided with a ball bearing (1005) in a sliding mode, a first sliding block (1004) is fixedly mounted on the ball bearing (1005), and the first sliding block (1004) can slide in the through hole (8).

5. A steel rail hoisting and lifting electromagnetic chuck as claimed in claim 4, wherein: a second sliding block (11) is fixedly mounted on the first sliding block (1004), two groups of second grooves (12) are formed in the lower surface of the second sliding block (11), and a second electric push rod (13) is arranged in each second groove (12).

6. A steel rail hoisting electromagnetic chuck as claimed in claim 1, wherein: the falling-preventing component (14) comprises two groups of adjusting plates (1401), a placing groove (1402) is formed in each adjusting plate (1401), a first positioning block (1403) is fixedly mounted on each adjusting plate (1401), a second positioning block (1404) is fixedly mounted on each first positioning block (1403), a third electric push rod (1405) is fixedly mounted at one end of each second positioning block (1404), and each third electric push rod (1405) penetrates through the adjusting plate (1401) to be adjustably mounted in the placing groove (1402).

7. A steel rail hoisting electromagnetic chuck as claimed in claim 6, wherein: the other end fixed mounting of third electric putter (1405) has first concatenation piece (1406) and second concatenation piece (1407), fixed mounting has joint piece (1409) on first concatenation piece (1406), joint groove (1408) have been seted up on second concatenation piece (1407), joint groove (1408) and joint piece (1409) accessible are adjusted third electric putter (1405) and are carried out automatic joint.

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