CN103675092A - Retractable coil magnetic particle flaw detector with compatible wheel diameter - Google Patents
Retractable coil magnetic particle flaw detector with compatible wheel diameter Download PDFInfo
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- CN103675092A CN103675092A CN201210334013.3A CN201210334013A CN103675092A CN 103675092 A CN103675092 A CN 103675092A CN 201210334013 A CN201210334013 A CN 201210334013A CN 103675092 A CN103675092 A CN 103675092A
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Abstract
The invention discloses a retractable coil magnetic particle flaw detector with a compatible wheel diameter, and belongs to non-destructive magnetic inspection equipment. A programmed control system cabin, a coil movement device, an electrode clamping device, a centering device and a peripheral magnetization current source are sequentially arranged on the left side surface of a frame from top to bottom; an industrial personal computer system cabin, a coil movement device, an electrode clamping device, a centering device and a longitudinal magnetization current source are sequentially arranged on the right side surface from top to bottom; dual rows of retractable coils with compatible wheel diameters are arranged above and below a workpiece; a main spray device is arranged on the side surface of the workpiece; a roller rotation device is arranged below a pair of wheel hubs of the workpiece; a feed and discharge device is arranged on the outer side of the roller rotation device. The retractable coil magnetic particle flaw detector is arranged between two wheel hubs of a wheel shaft; dual rows of retractable coils are adopted, and the compatibility is good. A bridge self-floating device is adopted, the contact pressure between contacts can be automatically balanced, and the phenomenon of unreliable individual contacts is avoided. The magnetic particle flaw detector is good in compatibility, high in magnetization efficiency, high in flaw detection sensitivity, accurate to locate, simple in structure, and low in construction cost.
Description
Technical field
The present invention relates to a kind of nondestructive magnetic inspection equipment, particularly a kind of footpath compatibility of taking turns can folding coil magnaflux, for the nondestructive examination of the special-shaped workpiece of shaft-like workpiece, I. C. engine crankshaft and other moulding complexity of train wheel equity belt wheel.
Background technology
Since reform and opening-up, national economy rapid growth, " scientific and technical innovation, autonomous innovation " become the main flow of domestic industry development, and China's industry is just progressively to the future development of intensive style, energy-saving and emission-reduction, low-carbon (LC).Current, the magnetic powder inspection method at home and abroad every field of industry is all widely used, the ultimate principle that magnetic detects is: when ferrimagnet is magnetized in magnetic field, defect or the structural state variation on material surface and nearly surface can make local magnetoconductivity change, be that magnetic resistance increases, thereby make corresponding distortion of magnetic flux in magnetic circuit, part magnetic flux directly passes through defect, part magnetic flux is walked around defect at material internal, some magnetic flux can leave material surface, by air, walk around defect and reenter again material, therefore at material surface, formed stray field.In general, surface crack is darker, and the amplitude that leakage flux runs off material surface is higher, substantially linear between them.At stray field place, due to magnetic line of force discrepancy material surface, at formation the two poles of the earth, defect both sides (S, the N utmost point), if while spraying tiny ferromagnetic powder on this surface, place, surface leakage magnetic field can absorb magnetic and form magnetic trace, demonstrates defect shape.For adapting to the main flow operational mode of railroad train high-speed overload in recent years, for the most important parts of train operation wheel concerning, its impact load is increased considerably, working environment is severeer, and this has just proposed the more requirement of Gao Gengyan to taking turns right workmanship and taking turns to the technical indicator of magnetic particle inspection apparatus.Prior art situation: defect-detecting equipment to rolling stock wheel when carrying out Non-Destructive Testing, need to be between two wheels be to wheel hub, and comprise that the wheel of two ends axle journal carries out induced magnetization with the solenoid coil energising of multi-turn respectively to three positions of axle.The internal diameter of solenoid coil need to be close to wheel as far as possible just can have suitable efficiency to axle.The patent No. is that the Chinese patent of ZL200310112725.1 discloses a kind of double row comb electrode folding coil wheel pair magnaflux, this machine adopts double comb teeth shape electrode vertical folding multi-turn solenoid coil and coil folding operating mechanism thereof, two groups of moving coils have been set up, the magnetizable electrode chuck of self-straightening structure, the automatic feeder of band buffering, automatic discharge apparatus, novel structure and the technology such as high stability workpiece rotation support roller and roller bracket structure, and be equipped with industrial control computer and special-purpose running control software and network communication software, formed a novel automatic railway vehicle wheel to magnetic particle testing system, compare with original same category of device, in function and performance, be all improved largely.But there is following defect in this machine: 1, owing to adopting rotary opening solenoid coil, the contact of armature contact is restricted, while applying larger electric current, there will be electrode sparking and scaling loss galvanic corrosion phenomenon, cause magnetization current unstable, flaw detection sensitivity is low, reliability is poor, easily cause and Lou visit phenomenon, hiding potential safety hazard; 2, poor to the compatibility of different wheel gauge structures, if wheel between centers has different constructional device (as larger gear, deceleration box, brake disc etc.), generally can not realize whole containings; 3, many to upper annex to wheel, quality weight, the workpiece that inertia is large, the impact resistance that rotates riding wheel apparatus is poor.The technician of R&D institution and enterprise is constantly exploring, is studying, wish to develop that a kind of compatibility is good, flaw detection sensitivity is high, the magnaflux of superior performance, although make some progress, still exist the technical barrier not yet overcoming in practice.
Summary of the invention
The object of the invention is to overcome above deficiency, provide a kind of footpath compatibility of taking turns can folding coil magnaflux.This machine is between wheel is to two wheel hubs of axle, adopt double folding coil, can there is extraordinary compatibility to different wheel gauge structures, and hydrojet is even, there is stronger resistance to impact, flaw detection sensitivity is high, accurate positioning, good reliability, and can obtain best detection effect, has solved the great technical barrier of magnaflux.
The technical solution adopted for the present invention to solve the technical problems is: contain circumferential magnetization current source, charging/discharging device, electrode clamp device, coil mobile device, frame, stored program controlled storehouse, centering apparatus, folding coil, main jet liquid device, industrial computer system storehouse, support roller wheelwork, frame is rectangle portal frame, a left side for frame, right both sides are made unit from top to bottom and are refused body, and left surface unit is refused body and is furnished with stored program controlled storehouse topmost, are furnished with successively coil mobile device downwards, electrode clamp device, centering apparatus, circumferential magnetization current source, right flank unit cabinet is furnished with industrial computer system storehouse topmost, is furnished with successively coil mobile device downwards, electrode clamp device, centering apparatus, longitudinal magnetization current source, the top of frame is also made unit and is refused body, in the above and below of detected workpiece, being furnished with that wheel footpath is compatible double can folding coil, in detected side surface of workpiece, main jet liquid device is installed, be furnished with support roller wheelwork below taking turns wheel hub detected workpiece is a pair of, support roller wheelwork outside is provided with charging/discharging device, described double folding coil is between detection workpiece wheel is to two wheel hubs of axle, this folding coil is comprised of lifting electrode group and fixed electorde group, fixed electorde group is comprised of a plurality of fixed electordes, fixed electorde contains lower electrode tip, electrode spring, electrode guide holder, insulating bushing, effect due to spring, electrode tip can fluctuate, thereby guarantee that each contact contact is good, fixed electorde group is arranged on bottom electrode beam, bottom electrode beam is fixed on the bottom in frame portal frame, each fixed electorde is connected to form under toroidal winding half side with braided wire again, lifting electrode group liftable, by a plurality of lifting electrodes, formed, lifting electrode contains rise fall of electrodes cylinder, guide rod, guide frame, busbar, bridge-type self-relocation device, conduction clamping cylinder, guide frame is located in frame, guide rod is located on guide frame, between two guide rods, be provided with rise fall of electrodes cylinder, guide rod is provided with the busbar that electric conductivity is good, and contact compression with conduction clamping cylinder, each electrode tip of lifting electrode is furnished with bridge-type self-relocation device, liftable lifting electrode group is assembled in fastening frame, and corresponding one by one with fixed electorde group, form on toroidal winding half side, described moving coil device is positioned at the axle journal position of wheel to axle two ends, moving coil device is the closed solenoid coil of a kind of multiturn, contain cylinder, coil gripping member, coil, sleeve base, the axis of guide, both sides at frame portal frame are furnished with respectively cylinder, cylinder matches with the axis of guide, internal coil diameter is a bit larger tham the axle journal of detected workpiece wheel to axle two ends, one side of coil is fixed on one end of the axis of guide by coil gripping member, and make the hub of a spool of moving coil device consistent with detected workpiece Lun Duizhou center, the axis of guide is provided with two sleeve bases, act on workpiece wheel to the moving coil device of axle two end axles neck position and act on the folding coil of workpiece wheel to axis body position between two wheel hubs, by braided wire, be connected on circumferential magnetization current source and longitudinal magnetization current source, form a series connection solenoidal magnetization loop, described centering apparatus is located on the electrode clamp device of frame both sides, contain roller, connecting rod, bearing, rotating shaft, electrode, guide wheel, current-carrying plate, roller contacts wheel hub automatically, and make different pendulum angles according to hub diameter difference, connecting rod can convert automatically according to pendulum angle the lifting displacement of terminal clamp to, described rotation riding wheel apparatus is positioned at bottom electrode beam bottom, contain two support roller groups, universal joint assembly, transmission shaft, shaft coupling, reduction gear, below the right side of frame portal frame, be provided with reduction gear, reduction gear is connected with transmission shaft by shaft coupling, transmission shaft is connected with one of them supporting-roller shaft of left side support roller group by universal joint assembly, this supporting-roller shaft is connected with one of them supporting-roller shaft of right side support roller group by shaft coupling, described support roller group contains roller bracket, the roller bearing units of usheing to seat, support roller, supporting-roller shaft, each support roller group contains two support rollers, two support rollers are located at respectively in two supporting-roller shaft, each support roller two ends is respectively equipped with the roller bearing units of usheing to seat, under two support rollers, be provided with roller bracket, two symmetrical placements of roller bracket, the special insulation measures of the inner employing of support roller, support roller rolling surface is provided with and takes turns the curved surface that wheel hub baffle wheel profile is adapted, workpiece wheel is provided with main jet liquid device to side, contain hydrojet supervisor, flexible flexible sparge pipe, liquid-spraying control device, on hydrojet supervisor, be uniformly distributed flexible flexible sparge pipe is housed, during use, can adjust as required the arbitrarily angled and position of each nozzle, make magnetic flaw detection ink be evenly distributed on the whole effects on surface of taking turns, hydrojet supervisor top is provided with liquid-spraying control device.
The present invention solves the know-why that its technical matters adopts: this defectoscope is for the nondestructive examination of the special-shaped workpiece of shaft-like workpiece, I. C. engine crankshaft and other moulding complexity of train wheel equity belt wheel.Between wheel is to two wheel hubs of axle, adopt double folding coil, half side on folding coil is liftable electrode group, rise fall of electrodes cylinder has longer stroke, can there is extraordinary compatibility to different wheel gauge structures, even if wheel between centers has different constructional devices (as larger gear, deceleration box, brake disc etc.), all can be contained.Lifting electrode group upper electrode tip is also used bridge-type self-relocation device, and its energy self-poise contact Contact pressure, avoids occurring the unreliable phenomenon in indivedual contacts.In order to make guide rod conduction good, on guide rod, use the busbar that electric conductivity is good, and contact compression with conduction clamping cylinder, eliminate gap, guarantee that conduction is reliable.Lifting electrode group is assembled in fastening frame, thereby solid and reliable, and corresponding one by one with bottom electrode group.When work, rise fall of electrodes cylinder drives lifting electrode group to make vertical displacement movement, to aim at the direction of fixed electorde group, does coil open and close movement.When the piston rod of rise fall of electrodes cylinder is made return movement, lifting electrode group and fixed electorde component from, between two arrays of electrodes, form space, can allow workpiece free in and out flaw detection station, when the piston rod of rise fall of electrodes cylinder is made pushing tow and moved and put in place, between lifting electrode group and fixed electorde group, corresponding each meshes one by one to electrode contacts, forms a closed multi-turn solenoid coil on circuit, so that by electric current, workpiece is carried out to induced magnetization or demagnetization operation.Take turns right axle journal position, be wheel to the more concentrated region that meets with stresses when the train operation, be also the key area of flaw detection operation, and the two ends of its place, position axle, the position that while being again magnetization, the magnetic line of force significantly disperses.In order to strengthen the magnetization effect of wheel to two ends axle journal, at wheel, coil mobile device has been installed in two ends, coil moves by cylinder and realizes, and distance can rest on optional position as required, thereby obtains best detection effect.When the lifting electrode group of folding coil and fixed electorde group are done disengaging movement, two coil mobile devices, under the driving of cylinder separately, synchronously move along the direction of leaving axle journal backward, to form space, are convenient to workpiece and free in and out operation position; When folding coil is made closing motion, two coil mobile devices, under the driving of cylinder separately, synchronously travel forward, and make coil just in time be enclosed within the right axle journal position of wheel, form the electric loop of induced magnetization of a multi-turn solenoid coil closure.
Because wheel is many to specification, hub diameter differs greatly, during circumferential magnetization, for making two end electrodes can adapt to the needs that different wheels footpath is detected, terminal clamp need be changed from motion tracking according to wheel footpath difference, so centering apparatus is housed respectively on the electrode clamp device of frame both sides.During work, roller contacts wheel hub automatically, and make different pendulum angles according to hub diameter difference, owing to adopting optimal design, connecting rod can convert automatically according to pendulum angle the lifting displacement of terminal clamp to, thereby automatically follow the tracks of journal centre, to obtain best contact area, prevent electrode sparking and scaling loss galvanic corrosion phenomenon.Wheel, in flaw detection process, needs automatic rotation in good time, to spray equably magnetic flaw detection ink and search for shown crack defect out while observing flaw detection, so wheel must be provided with and can hold up wheel to the holder wheelwork also rotating magnaflux.Because holder wheelwork is except need hold up and drive wheel that weight is very large to rotating, also to bears the impact load of charging, discharging, so need to have larger intensity.
The invention has the beneficial effects as follows: this machine, between wheel is to two wheel hubs of axle, adopts double folding coil.Rise fall of electrodes cylinder has longer stroke, can have extraordinary compatibility to different wheel gauge structures, and lifting electrode group upper electrode tip is also used bridge-type self-relocation device, and its energy self-poise contact Contact pressure, avoids occurring the unreliable phenomenon in indivedual contacts.Adopt new-type support roller wheelwork, there is stronger resistance to impact.For hydrojet even, at wheel, side is provided with to liquid-jet device, on hydrojet supervisor, be uniformly distributed flexible flexible sparge pipe is housed, during use, can adjust as required the arbitrarily angled and position of each nozzle, make magnetic flaw detection ink be evenly distributed on the whole effects on surface of taking turns, and guarantee in pipeline residual magnetic liquid no longer water clock to axletree, destroy the magnetic trace having formed.This is taken turns, and footpath compatibility is can folding coil magnaflux compatibility good, magnetization efficiency is high, flaw detection sensitivity is high, registration, and can obtain best detection effect, simple in structure, cheap.
Accompanying drawing explanation
In conjunction with the accompanying drawings and embodiments the present invention to be further described below:
Fig. 1 is that a kind of footpath compatibility of taking turns can folding coil magnaflux front view;
Fig. 2 is that a kind of footpath compatibility of taking turns can folding coil magnaflux left view;
Fig. 3 is that a kind of footpath compatibility of taking turns can folding coil magnaflux support roller wheelwork front view;
Fig. 4 is that a kind of footpath compatibility of taking turns can folding coil magnaflux support roller wheelwork vertical view.
In the drawings: 1 circumferential magnetization current source, 2 charging/discharging devices, 3 coils, 4 electrode clamp devices, 5 coil mobile devices, 6 cylinders, 7 sleeve bases, 8 axis of guides, 9 coil gripping members, 10 frames, 11 stored program controlled storehouses, 12 centering apparatus, 13 bridge-type self-relocation devices, 14 hydrojet supervisors, 15 flexible flexible sparge pipes, 16 lifting electrodes, 17 rise fall of electrodes cylinders, 18 liquid-spraying control devices, 19 guide rods, 20 main jet liquid devices, 21 workpiece, 22 bearings, 23 rollers, 24 rotating shafts, 25 bottom electrode beams, 26 fixed electordes, 27 industrial computer system storehouses, 28 electrodes, 29 current-carrying plates, 30 guide wheels, 31 support roller wheelworks, 32 longitudinal magnetization current sources, 33 connecting rods, 34 guide frames, 35 busbars, 36 braided wires, 37 conduction clamping cylinders, 38 roller brackets, 39 roller bearing units of usheing to seat, 40 support rollers, 41 supporting-roller shaft, 42 universal joint assemblies, 43 transmission shafts, 44 shaft couplings, 45 reduction gear.
Embodiment
At Fig. 1, 2, 3, in 4, this magnaflux contains circumferential magnetization current source 1, charging/discharging device 2, electrode clamp device 4, coil mobile device 5, frame 10, stored program controlled storehouse 11, centering apparatus 12, folding coil, main jet liquid device 20, industrial computer system storehouse 27, support roller wheelwork 31, frame 10 is rectangle portal frame, a left side for frame 10, right both sides are made unit from top to bottom and are refused body, and left surface unit is refused body and is furnished with stored program controlled storehouse 11 topmost, are furnished with successively coil mobile device 5 downwards, electrode clamp device 4, centering apparatus 12, circumferential magnetization current source 1, right flank unit cabinet is furnished with industrial computer system storehouse 27 topmost, is furnished with successively coil mobile device 5 downwards, electrode clamp device 4, centering apparatus 12, longitudinal magnetization current source 32, the top of frame 10 is also made unit and is refused body, in the above and below of detected workpiece, being furnished with that wheel footpath is compatible double can folding coil, in detected side surface of workpiece, main jet liquid device 20 is installed, be furnished with support roller wheelwork 31 below taking turns wheel hub detected workpiece is a pair of, support roller wheelwork 31 outsides are provided with charging/discharging device 2, described double folding coil is between detection workpiece wheel is to two wheel hubs of axle, this folding coil is comprised of lifting electrode group and fixed electorde group, fixed electorde group is comprised of a plurality of fixed electordes 26, fixed electorde 26 contains lower electrode tip, electrode spring, electrode guide holder, insulating bushing, effect due to spring, electrode tip can fluctuate, thereby guarantee that each contact contact is good, fixed electorde group is arranged on bottom electrode beam 25, bottom electrode beam 25 is fixed on the bottom in frame 10 portal frames, each fixed electorde 26 is connected to form under toroidal winding half side with braided wire 36 again, lifting electrode group liftable, by a plurality of lifting electrodes 16, formed, lifting electrode 16 contains rise fall of electrodes cylinder 17, guide rod 19, guide frame 34, busbar 35, bridge-type self-relocation device 13, conduction clamping cylinder 37, guide frame 34 is located in frame 10, guide rod 19 is located on guide frame 34, between two guide rods 19, be provided with rise fall of electrodes cylinder 17, guide rod 19 is provided with the busbar 35 that electric conductivity is good, and contact compression with conduction clamping cylinder 37, lifting electrode 16 each electrode tips are furnished with bridge-type self-relocation device 13, liftable lifting electrode group is assembled in fastening frame 10, and corresponding one by one with fixed electorde group, form on toroidal winding half side, described moving coil device 5 is positioned at the axle journal position of wheel to axle two ends, moving coil device 5 is the closed solenoid coils of a kind of multiturn, contain cylinder 6, coil gripping member 9, coil 3, sleeve base 7, the axis of guide 8, both sides at frame 10 portal frames are furnished with respectively cylinder 6, cylinder 6 matches with the axis of guide 8, coil 3 internal diameters are a bit larger tham the axle journal of detected workpiece wheel to axle two ends, one side of coil 3 is fixed on one end of the axis of guide 8 by coil gripping member 9, and make the hub of a spool of moving coil device 5 consistent with detected workpiece Lun Duizhou center, the axis of guide 8 is provided with two sleeve bases 7, act on workpiece wheel to the moving coil device 5 of axle two end axles neck position and act on the folding coil of workpiece wheel to axis body position between two wheel hubs, by braided wire 36, be connected on circumferential magnetization current source 1 and longitudinal magnetization current source 32, form a series connection solenoidal magnetization loop, described centering apparatus 12 is located on the electrode clamp device 4 of frame both sides, contain roller 23, connecting rod 33, bearing 22, rotating shaft 24, electrode 28, guide wheel 30, current-carrying plate 29, roller contacts wheel hub automatically, and make different pendulum angles according to hub diameter difference, connecting rod 33 can convert automatically according to pendulum angle the lifting displacement of terminal clamp to, described rotation riding wheel apparatus 31 is positioned at bottom electrode beam 25 bottoms, contain two support roller groups, universal joint assembly 42, transmission shaft 43, shaft coupling 44, reduction gear 45, below the right side of frame 10 portal frames, be provided with reduction gear 45, reduction gear 45 is connected with transmission shaft 43 by shaft coupling 44, transmission shaft 43 is connected with one of them supporting-roller shaft 41 of left side support roller group by universal joint assembly 42, this supporting-roller shaft 41 is connected with one of them supporting-roller shaft 41 of right side support roller group by shaft coupling 44, described support roller group contains roller bracket 38, the roller bearing units 39 of usheing to seat, support roller 40, supporting-roller shaft 41, each support roller group contains two support rollers 40, two support rollers 40 are located at respectively in two supporting-roller shaft 41, each support roller 40 two ends is respectively equipped with the roller bearing units 39 of usheing to seat, under two support rollers 40, be provided with roller bracket 38, two symmetrical placements of roller bracket 38, the special insulation measures of the inner employing of support roller 40, support roller 40 rolling surfaces are provided with and take turns the curved surface that wheel hub baffle wheel profile is adapted, workpiece wheel is provided with main jet liquid device 20 to side, contain hydrojet supervisor 14, flexible flexible sparge pipe 15, liquid-spraying control device 18, on hydrojet supervisor 14, be uniformly distributed flexible flexible sparge pipe 15 is housed, during use, can adjust as required the arbitrarily angled and position of each nozzle, make magnetic flaw detection ink be evenly distributed on the whole effects on surface of taking turns, hydrojet is responsible for 14 tops and is provided with liquid-spraying control device.
This defectoscope is for the nondestructive examination of the special-shaped workpiece of shaft-like workpiece, I. C. engine crankshaft and other moulding complexity of train wheel equity belt wheel.Between wheel is to two wheel hubs of axle, adopt double folding coil, half side on folding coil is liftable electrode group, rise fall of electrodes cylinder 17 has longer stroke, can there is extraordinary compatibility to different wheel gauge structures, even if wheel between centers has different constructional devices (as larger gear, deceleration box, brake disc etc.), all can be contained.Lifting electrode group upper electrode tip is also used bridge-type self-relocation device 13, and its energy self-poise contact Contact pressure, avoids occurring the unreliable phenomenon in indivedual contacts.In order to make guide rod 19 conductions good, on guide rod 19, use the busbar 35 that electric conductivity is good, and contact compression with conduction clamping cylinder 37, eliminate gap, guarantee that conduction is reliable.Lifting electrode group is assembled in fastening frame 10, thereby solid and reliable, and corresponding one by one with bottom electrode group.When work, rise fall of electrodes cylinder 17 drives lifting electrode group to make vertical displacement movement, to aim at the direction of fixed electorde group, does coil open and close movement.When the piston rod of rise fall of electrodes cylinder 17 is made return movement, lifting electrode group and fixed electorde component from, between two arrays of electrodes, form space, can allow workpiece 21 free in and out flaw detection station, when the piston rod of rise fall of electrodes cylinder 17 is made pushing tow and moved and put in place, between lifting electrode group and fixed electorde group, corresponding each meshes one by one to electrode contacts, forms a closed multi-turn solenoid coil on circuit, so that by electric current, workpiece 21 is carried out to induced magnetization or demagnetization operation.Take turns right axle journal position, be wheel to the more concentrated region that meets with stresses when the train operation, be also the key area of flaw detection operation, and the two ends of its place, position axle, the position that while being again magnetization, the magnetic line of force significantly disperses.In order to strengthen the magnetization effect of wheel to two ends axle journal, at wheel, coil mobile device 5 has been installed in two ends, coil moves by cylinder 6 and realizes, and distance can rest on optional position as required, thereby obtains best detection effect.When the lifting electrode group of folding coil and fixed electorde group are done disengaging movement, two coil mobile devices 5, under the driving of cylinder 6 separately, synchronously move along the direction of leaving axle journal backward, to form space, are convenient to workpiece 21 and free in and out operation position; When folding coil is made closing motion, two coil mobile devices 5, under the driving of cylinder separately, synchronously travel forward, and make coil just in time be enclosed within the right axle journal position of wheel, form the electric loop of induced magnetization of a multi-turn solenoid coil closure.
Because wheel is many to specification, hub diameter differs greatly, during circumferential magnetization, for making two end electrodes can adapt to the needs that different wheels footpath is detected, terminal clamp need be changed from motion tracking according to wheel footpath difference, so when centering apparatus 12 work is housed respectively on frame 10 both sides electrode clamp devices 4, roller 23 is contact wheel hub automatically, and make different pendulum angles according to hub diameter difference, owing to adopting optimal design, connecting rod 33 can convert automatically according to pendulum angle the lifting displacement of terminal clamp to, thereby automatically follow the tracks of journal centre, to obtain best contact area, prevent electrode sparking and scaling loss galvanic corrosion phenomenon.Wheel, in flaw detection process, needs automatic rotation in good time, to spray equably magnetic flaw detection ink and search for shown crack defect out while observing flaw detection, so wheel must be provided with and can hold up wheel to the holder wheelwork 31 also rotating magnaflux.Because holder wheelwork 31 is except need hold up and drive wheel that weight is very large to rotating, also to bears the impact load of charging, discharging, so need to have larger intensity.
Claims (1)
1. wheel footpath compatibility can a folding coil magnaflux, contains circumferential magnetization current source, charging/discharging device, electrode clamp device, coil mobile device, frame, stored program controlled storehouse, centering apparatus, folding coil, main jet liquid device, industrial computer system storehouse, support roller wheelwork, is characterized in that: frame is rectangle portal frame, a left side for frame, right both sides are made unit from top to bottom and are refused body, and left surface unit is refused body and is furnished with stored program controlled storehouse topmost, are furnished with successively coil mobile device downwards, electrode clamp device, centering apparatus, circumferential magnetization current source, right flank unit cabinet is furnished with industrial computer system storehouse topmost, is furnished with successively coil mobile device downwards, electrode clamp device, centering apparatus, longitudinal magnetization current source, the top of frame is also made unit and is refused body, in the above and below of detected workpiece, being furnished with that wheel footpath is compatible double can folding coil, in detected side surface of workpiece, main jet liquid device is installed, be furnished with support roller wheelwork below taking turns wheel hub detected workpiece is a pair of, support roller wheelwork outside is provided with charging/discharging device, described double folding coil is between detection workpiece wheel is to two wheel hubs of axle, this folding coil is comprised of lifting electrode group and fixed electorde group, fixed electorde group is comprised of a plurality of fixed electordes, fixed electorde contains lower electrode tip, electrode spring, electrode guide holder, insulating bushing, effect due to spring, electrode tip can fluctuate, thereby guarantee that each contact contact is good, fixed electorde group is arranged on bottom electrode beam, bottom electrode beam is fixed on the bottom in frame portal frame, each fixed electorde is connected to form under toroidal winding half side with braided wire again, lifting electrode group liftable, by a plurality of lifting electrodes, formed, lifting electrode contains rise fall of electrodes cylinder, guide rod, guide frame, busbar, bridge-type self-relocation device, conduction clamping cylinder, guide frame is located in frame, guide rod is located on guide frame, between two guide rods, be provided with rise fall of electrodes cylinder, guide rod is provided with the busbar that electric conductivity is good, and contact compression with conduction clamping cylinder, each electrode tip of lifting electrode is furnished with bridge-type self-relocation device, liftable lifting electrode group is assembled in fastening frame, and corresponding one by one with fixed electorde group, form on toroidal winding half side, described moving coil device is positioned at the axle journal position of wheel to axle two ends, moving coil device is the closed solenoid coil of a kind of multiturn, contain cylinder, coil gripping member, coil, sleeve base, the axis of guide, both sides at frame portal frame are furnished with respectively cylinder, cylinder matches with the axis of guide, internal coil diameter is a bit larger tham the axle journal of detected workpiece wheel to axle two ends, one side of coil is fixed on one end of the axis of guide by coil gripping member, and make the hub of a spool of moving coil device consistent with detected workpiece Lun Duizhou center, the axis of guide is provided with two sleeve bases, act on workpiece wheel to the moving coil device of axle two end axles neck position and act on the folding coil of workpiece wheel to axis body position between two wheel hubs, by braided wire, be connected on circumferential magnetization current source and longitudinal magnetization current source, form a series connection solenoidal magnetization loop, described centering apparatus is located on the electrode clamp device of frame both sides, contain roller, connecting rod, bearing, rotating shaft, electrode, guide wheel, current-carrying plate, roller contacts wheel hub automatically, and make different pendulum angles according to hub diameter difference, connecting rod can convert automatically according to pendulum angle the lifting displacement of terminal clamp to, described rotation riding wheel apparatus is positioned at bottom electrode beam bottom, contain two support roller groups, universal joint assembly, transmission shaft, shaft coupling, reduction gear, below the right side of frame portal frame, be provided with reduction gear, reduction gear is connected with transmission shaft by shaft coupling, transmission shaft is connected with one of them supporting-roller shaft of left side support roller group by universal joint assembly, this supporting-roller shaft is connected with one of them supporting-roller shaft of right side support roller group by shaft coupling, described support roller group contains roller bracket, the roller bearing units of usheing to seat, support roller, supporting-roller shaft, each support roller group contains two support rollers, two support rollers are located at respectively in two supporting-roller shaft, each support roller two ends is respectively equipped with the roller bearing units of usheing to seat, under two support rollers, be provided with roller bracket, two symmetrical placements of roller bracket, the special insulation measures of the inner employing of support roller, support roller rolling surface is provided with and takes turns the curved surface that wheel hub baffle wheel profile is adapted, workpiece wheel is provided with main jet liquid device to side, contain hydrojet supervisor, flexible flexible sparge pipe, liquid-spraying control device, on hydrojet supervisor, be uniformly distributed flexible flexible sparge pipe is housed, during use, can adjust as required the arbitrarily angled and position of each nozzle, make magnetic flaw detection ink be evenly distributed on the whole effects on surface of taking turns, hydrojet supervisor top is provided with liquid-spraying control device.
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| CN201210334013.3A CN103675092A (en) | 2012-08-30 | 2012-08-30 | Retractable coil magnetic particle flaw detector with compatible wheel diameter |
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| CN201210334013.3A CN103675092A (en) | 2012-08-30 | 2012-08-30 | Retractable coil magnetic particle flaw detector with compatible wheel diameter |
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| CN104777217A (en) * | 2015-03-12 | 2015-07-15 | 江苏赛福探伤设备制造有限公司 | Passenger car wheel axel single-side opening/closing coil magnetic powder flaw detection machine |
| CN106198717A (en) * | 2016-07-07 | 2016-12-07 | 北京磁通设备制造有限公司 | Magnetic powder inspection moving coil magnetizing assembly and method |
| CN106248783A (en) * | 2016-08-29 | 2016-12-21 | 江苏赛福探伤设备制造有限公司 | Railway wheel is to large-scale Guan Bi yoke formula magnaflux |
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| CN107894582B (en) * | 2017-10-23 | 2021-11-26 | 中国电力科学研究院有限公司 | Method and system for reducing detection power loss of power transmission line to radar |
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