CN101798036B - Electromagnetic brake, friction piece thereof and friction piece manufacture method - Google Patents
Electromagnetic brake, friction piece thereof and friction piece manufacture method Download PDFInfo
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- CN101798036B CN101798036B CN2010101144100A CN201010114410A CN101798036B CN 101798036 B CN101798036 B CN 101798036B CN 2010101144100 A CN2010101144100 A CN 2010101144100A CN 201010114410 A CN201010114410 A CN 201010114410A CN 101798036 B CN101798036 B CN 101798036B
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Abstract
The invention discloses an electromagnetic brake, a friction piece thereof and a friction piece manufacture method. The electromagnetic brake comprises an iron core assembly, a magnetic roof assembly, a friction member and a manual brake release assembly, wherein the magnetic roof assembly comprises a magnetic roof; the manual brake release assembly comprises a bolt; the iron core assembly comprises an iron core bottom plate, an iron core outer ring, an iron core inner ring, a coil and a skeleton; the friction member is arranged on the outer side surface of the magnetic roof; the friction member and the magnetic roof are transversally positioned; the friction member is made of metal; the middle part of the outer side surface of the magnetic roof concaves inwards to form a spherical surface shape; the middle part of the outer side surface of the friction member convexes outwards to form the spherical surface shape which fits the inwards concave spherical surface part of the outer side surface of the magnetic roof, or, the middle part of the outer side surface of the magnetic roof outwards convexes to form the spherical surface shape, and the middle part of the outer side surface of the friction member concaves inwards to form the spherical surface shape which fits the outwards convex spherical surface part of the outer side surface of the magnetic roof. The electromagnetic brake has the advantages of big braking force, stable and reliable braking, convenient and simple assembly, energy saving, fast release, short time delay, low noise and the like.
Description
Technical field
The invention belongs to the elevator brake technical field, the manufacturing approach of particularly a kind of magnet stopper and friction member thereof, friction member.
Background technology
Magnet stopper is the requisite fender guard of elevator safety operation, and it has the braking and the two states that resets, when abnormal operation of elevator; System cuts off the electricity supply, and electromagnet loses electromagnetic force, under the elastic force effect of spring; Promote friction lining contact traction sheave; The lift car of stop operation is realized braking function, thereby is prevented that effectively lift car from producing danger because of abnormal motion gradually.After system realizes braking, can drg be resetted through manual type.When system's normal power-up work, electromagnet produces electromagnetic force, and friction lining declutches (being that friction lining breaks away from traction sheave), and drg is in reset mode, and towing machine is in normal working, and it drives lift car and moves up and down.
There is following defective in existing magnet stopper.
1, at first, friction lining adopts the captive joint mode, when band-type brake; Make and installation error owing to exist, often there are the phenomenon of bad contact in friction lining and traction sheave, both non-contacts of face completely; Be generally line contact or some contact,, cause decentraction or inclination between brake block and the brake wheel because both contact points are few; Cause two side clearances inconsistent, braking force is not enough, and safety reduces; And the wearing and tearing of friction lining ground are very fast, and the problems referred to above that the friction lining after the wearing and tearing exists are more serious, and control is extremely unstable; Secondly, friction lining adopts no asbestos organic matter material to process, and its friction coefficient is little, moment friction coefficient change greatly, friction force is little in the braking procedure, braking procedure is long, is easy to generate than heat greatly and causes the temperature of brake block higher; In order to form big braking force, just need stronger spring force, and the increase of spring force can cause electromagnetic force excessive, this situation causes the friction lining severe wear with the traction sheave direct contact, sheet to come off easily or burns.If adopt metallic material to make friction lining, in theory, though its glancing impact can increase friction force: contact for non-formula between a, metal friction sheet and the metal traction sheave, the wearing and tearing of friction lining are very fast; When contacting between b, metal friction sheet and the metal traction sheave, can produce very big noise, thereby can't reach the compulsory standard requirement of traction machine brake noise.If the noise that produces in the time of will reducing both and contact, just must reduce to move the gap of plate and quiet plate, and the reducing of gap, micro-switch can't detect the action of its moving plate again, so existing traction machine brake also can't adopt the friction lining of metallic material system.At last, behind the friction disc wear, change or adjust very trouble of friction lining operation, on-the-spot adjusting control difficulty is bigger, and the performance poor repeatability reduces service life.
2, setting of spring is restive, and tension causes braking force excessive easily.When between voltage below level or line fault, brake block adhesion, the electromagnet armature during excessive clearance; Be prone to cause suction not enough, or when the gap is too small between the electromagnet armature, cause iron core adhesive stroke too small; Thereby can not open damper brake, cause drg normally not reset.Simultaneously; Because voltage below level or braking element fault, brake block adhesion; Make measurement of electric mechanical master cock and gap value cause speed of response slow in time, thereby can not in time declutch, it is slow in one's movements to cause drg to declutch; Existence owing to gap value simultaneously makes noise become big, and the noise coefficient has enforceable standard-required in traction machine brake.
3, drg generally adopts single coil structure at present, and there are some technological deficiencies in single coil structure, for this reason; Chinese patent numbers 200820106008.6 discloses a kind of multi-thread girth sheets block brake, and it is equipped with at least two making toroidal coil windings in pedestal, and its pedestal is and place coil; Though this patented technology scheme has its advantage; But a monoblock steel part goes out a plurality of annular grooves through lathe in machining forms pedestal, its processing time consuming effort, and manufacturing cost is high.
4, the switch of towing machine use at present all is the mechanical type micro-switch, and there is low, insecure technological deficiency of working in service life in it; Moreover its accuracy of detection is low, and as to the little gap (like 0.3mm) between moving plate and the quiet plate, the prior mechanical micro-switch can't detect at all.In addition, present elevator machine brake does not all have the wearing and tearing measuring ability excessively of friction lining, can only check whether friction lining need be adjusted or changed with artificial unloading's drg.
Above problems cause the security and stability relative mistake of drg; Be difficult to satisfy that lock torque is big, component strength is high, abrasion loss is little, the friction lining heating temp is low, the brake application braking steadily, noise is little, declutch flexibly and can be totally released, leading dimensions is little and technical requirements such as simple installation, must bring the unstable and problems such as complex structure, manufacturing cost height of control.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective that prior art exists, a kind of magnet stopper is provided, for reaching the aforementioned techniques purpose, the present invention takes following technical scheme:
Magnet stopper comprises core assembly, magnetopause board component, friction member, the manual assembly that declutches, and the magnetopause board component comprises the magnetopause plate; The assembly that manually declutches comprises bolt, and core assembly comprises iron core base plate, iron core outer ring, iron core inner ring, coil and skeleton, iron core base plate medial surface secured core outer ring, iron core inner ring; The iron core outer ring forms several holes; The iron core inner ring is in the hole of iron core outer ring, forms groove between iron core inner ring and iron core outer ring, and the skeleton that is wound with coil is installed in the groove;
The magnetopause plate that parallels laying with the iron core base plate is in the below of iron core outer ring, iron core inner ring and coil; Magnetopause plate and iron core base plate link to each other through several double end studs and the bolt that is in the middle part; Bolt passes iron core base plate, magnetopause plate, and the end that bolt stretches out outside the magnetopause plate screws in nut; Bolt overcoat first loose floodgate spring, and screw in a setting nut, the two ends of first loose floodgate spring peak at iron core plate inner wall, setting nut respectively; Double end stud passes iron core base plate, iron core outer ring and magnetopause plate, and double end stud overcoat second spring, second both ends of the spring peak at iron core base plate, magnetopause plate inwall respectively; The end that double end stud stretches out outside the magnetopause plate screws in packing ring; Friction member is in the lateral surface of magnetopause plate, friction member and magnetopause plate located lateral, and friction member adopts metal to process;
The lateral surface of the magnetopause plate middle part formation dome shape that concaves, the lateral surface middle part of friction member is dome shape to evagination, and is suitable with the interior concave spherical surface portion of magnetopause plate lateral surface; Perhaps, the lateral surface of magnetopause plate middle part outwards convexes into dome shape, and the lateral surface middle part of friction member concaves and is dome shape, and is suitable with the evagination sphere portion of magnetopause plate lateral surface.
Described magnet stopper, the iron core outer ring forms a pair of circular hole, and described iron core inner ring is cylindrical, and the iron core inner ring is installed in the circular hole of iron core outer ring; Iron core outer ring, iron core inner ring link to each other through several screw retention with the iron core base plate.
Described magnet stopper; Friction member comprises friction lining, friction bar, friction lining base, and friction lining adopts bryllium bronze to process, and the friction bar adopts aluminium to process; Friction lining is compound in the lateral surface of friction bar, and the medial surface of friction bar is fixedly linked through flathead screw and friction lining base; The friction face of friction lining is an arcwall face; The friction lining base links to each other with the magnetopause plate through making leaf spring and screw; The lateral surface middle part that the interior concave spherical surface at said friction member lateral surface middle part or evagination sphere are located at the friction lining base.
Described magnet stopper, the interior concave spherical surface of friction lining base or evagination sphere middle part has shrinkage pool, stretches into the end of said bolt in the shrinkage pool and is threaded onto the nut of bolt end.
Described magnet stopper; Be provided with the gap adjustment assembly between core assembly and magnetopause board component; This adjusting part comprises setting nut, governing screw and flathead screw; Flathead screw screws in the governing screw upper end after passing the iron core base plate, and governing screw is passed iron core outer ring and magnetopause plate, and the end that governing screw is stretched out the magnetopause plate screws in setting nut; Governing screw forms step, and the step of governing screw pushes up with magnetopause plate inwall mutually.
Reciprocal bearing is installed in stretch through perforation place of governing screw of described magnet stopper, magnetopause plate.
Described magnet stopper, magnetopause plate medial surface is fixed with cushion blocking, and cushion blocking protrudes from the surface of magnetopause plate.
The end that described magnet stopper, double end stud stretch out the iron core base plate screws in nut and packing ring.
Described magnet stopper, core assembly is installed Hall element, and Hall element links to each other with control circuit; The magnetopause plate is equipped with and the corresponding permanent magnet in Hall element position.
The invention also discloses a kind of friction member of magnet stopper, be made of metal, comprise friction lining, friction bar, friction lining base, friction lining is compound in the lateral surface of friction bar; Medial surface and the friction lining base of friction bar are fixedly linked, and the lateral surface of friction lining base middle part is dome shape to evagination and perhaps concaves and be dome shape.
The friction member of described magnet stopper, friction lining adopt bryllium bronze to process, and the friction face of friction lining is an arcwall face, and the friction bar adopts aluminium to process.
The invention also discloses a kind of manufacturing approach of magnet stopper friction member, it carries out according to the following steps:
One, die-cut blanking: select bryllium bronze sheet material for use, place blanking die, adopt the die-cut blanking of punch press;
Two, punch forming: the bryllium bronze plate of die-cut blanking is placed forming mould, adopt punch press that the bryllium bronze plate is struck out the curved shape of cross-sectional plane;
Three, age hardness is handled: adopt vacuum furnace to stamping forming bryllium bronze heating and insulation;
Four, with the aluminium base die cast: as inserts, place location in the preheated mold with punch forming and the bryllium bronze after ageing treatment, stay mould, inject aluminium water, with bryllium bronze and aluminium base die cast, pressurize then, water-cooled again; The aluminium base lateral surface of die cast middle part is dome shape or concaves to evagination and is dome shape;
Five, the extrados to bryllium bronze carries out grinding and grinding through emery wheel.
Further; The manufacturing approach of described magnet stopper friction member, it is in the first step, and it is square to select for use bryllium bronze sheet material to be die-cut into; And go out several manholes and square anticreep breach; Through hole with the center-point of square plate be the center of circle along around be uniformly distributed with, the anticreep breach is and is symmetrically arranged in two relative edge edges, and the anticreep breach is near other two edges; In second step, with not turning up with the both sides of anticreep breach, and the stretching through hole; Bryllium bronze plate with die-cut blanking places forming mould simultaneously, adopts punch press that the bryllium bronze plate is struck out the curved shape of cross-sectional plane.
Further, the manufacturing approach of described magnet stopper friction member, it adopted the vacuum furnace heating in the 3rd step, with 250 ℃～450 ℃ temperature insulations 2～5 hours.
Further, the manufacturing approach of described magnet stopper friction member, it is in the 4th step; Locate down for 150 ℃～210 ℃ in preheated mold; Mould remaining time 4.0～8.0s, aluminium water be with injection speed 3.0～4.0m/s, injection power 3000～4000N; 650 ℃～700 ℃ moulding of cast temperature, dwell time 2.0～5.0s.
The invention also discloses a kind of another kind of technical scheme of manufacturing approach of magnet stopper friction member, it carries out according to the following steps:
One, die-cut blanking: select bryllium bronze sheet material for use, place blanking die, adopt the die-cut blanking of punch press;
Two, punch forming: the bryllium bronze plate of die-cut blanking is placed forming mould, adopt punch press that the bryllium bronze plate is struck out the curved shape of cross-sectional plane;
Three, age hardness is handled: adopt vacuum furnace to stamping forming bryllium bronze heating and insulation;
Four, with friction bar die cast: as inserts, place location in the preheated mold with punch forming and the bryllium bronze after ageing treatment, stay mould, inject aluminium water, with bryllium bronze and friction bar die cast, pressurize then, water-cooled again;
Five, the extrados to bryllium bronze carries out grinding and grinding through emery wheel.
Six, the friction lining base that in mould, is dome shape in the middle part of the die cast lateral surface;
Seven, the friction lining base of the 6th step being processed is captiveed joint with the friction bar of handling through the 5th step.
Further; The manufacturing approach of described magnet stopper friction member, it is in the first step, and it is square to select for use bryllium bronze sheet material to be die-cut into; And go out several manholes and square anticreep breach; Through hole with the center-point of square plate be the center of circle along around be uniformly distributed with, the anticreep breach is and is symmetrically arranged in two relative edge edges, and the anticreep breach is near other two edges; In second step, with not turning up with the both sides of anticreep breach, and the stretching through hole; Bryllium bronze plate with die-cut blanking places forming mould simultaneously, adopts punch press that the bryllium bronze plate is struck out the curved shape of cross-sectional plane.
Further, the manufacturing approach of described magnet stopper friction member, it adopted the vacuum furnace heating in the 3rd step, with 250 ℃～450 ℃ temperature insulations 2～5 hours.
Further, the manufacturing approach of described magnet stopper friction member, it is in the 4th step; Locate down for 150 ℃～210 ℃ in preheated mold; Mould remaining time 4.0～8.0s, aluminium water be with injection speed 3.0～4.0m/s, injection power 3000～4000N; 650 ℃～700 ℃ moulding of cast temperature, dwell time 2.0～5.0s.
Further, the manufacturing approach of described magnet stopper friction member, its 6th step was in before the first step, second step, the 3rd step, the 4th step or the 5th step, and the friction lining base is connected through screw retention with the friction bar.
When elevator system cut-off in service, the electromagnet dead electricity, spring promotes to produce braking force through contact friction between friction lining and the traction sheave, thereby makes traction sheave realize gradually slowing down and stop, reaches stop and the purpose that prevents moving elevator car.
Friction member adopts floating type connection, increases the area of contact of friction lining and traction sheave, has improved contact resistance to abrasion and insensitivity.Simultaneously; Friction lining adopts metallic material to process, and it has high-wearing feature, great friction coefficient, stable quiet dynamic friction coefficient; Make this drg when obtaining the braking force identical with common drg; Required spring force is less, thereby the electromagnetic force when reducing to reset has also reduced impact simultaneously, reduces noise, improved the stability of braking.
Adopt multi-thread circle electromagnetic core structure, not only simplified manufacturing process, simple and convenient assembly, cost are low for it, and temperature rise is low, power is little, energy savings.Obtaining enough electromagnetic forcees simultaneously, improved the stability of under "on" position, controlling, guarantee the stability and the reliability that resets of "on" position control.
When the friction disc wear of drg, it is big that the gap between core assembly and the magnetopause board component can become gradually; When the gap between core assembly and the magnetopause board component reaches certain value (critical value); Be friction disc wear when acquiring a certain degree, this hall position switch produces action: the change of led status can inform that maintainer's drg need adjust or renewal of facing; The change of switching value output signal can stop the operation of elevator together with apparatus for controlling elevator, avoids elevator in the work down of unsafe state.Detect and control group employing hall position switch, it is highly sensitive, switch life is long, air gap is low, control stiffness is high.Through monitoring to the friction disc wear amount, can be the control wearing and tearing alarm preferably is provided, thereby improve the accuracy of control, improve the safe work state of towing machine.
After friction lining is crossed wearing and tearing, adjust through on-the-spot air gap adjusting part, solved prior art adjusting control inconvenience, inaccurate problem preferably.
Adopt above technical scheme can make the magnet stopper of equal volume obtain bigger braking force, and braking is stable, reliable, simple and convenient assembly, energy-conservation, discharge plurality of advantages such as fast, short time delay, low noise.
Description of drawings
Fig. 1 is the plan structure figure of magnet stopper of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the face upwarding assumption diagram of core assembly of the present invention.
Fig. 4 is the B-B cutaway view of Fig. 3.
Fig. 5 is the face upwarding assumption diagram of magnetopause board component of the present invention.
Fig. 6 is the C-C cutaway view of Fig. 5.
Fig. 7 is the plan structure figure of friction member of the present invention.
Fig. 8 is the cutaway view of friction member of the present invention.
Fig. 9 is the block diagram of magnetopause plate.
Figure 10 is the other direction block diagram of magnetopause plate.
Figure 11 is the block diagram of friction member.
Figure 12 is the other direction block diagram of friction member.
Figure 13 is the relative position scheme drawing of Hall element and permanent magnet.
Figure 14 is the principle of work scheme drawing of detection and control group.
Figure 15 is the schematic circuit diagram of detection and control group.
Figure 16 is the constructional drawing of bryllium bronze plate behind the die-cut blanking.
Figure 17 is that the D of Figure 16 is to view.
Figure 18 is the bryllium bronze constructional drawing after the punch forming.
Figure 19 is the E-E cutaway view of Figure 18.
Figure 20 is that the F of Figure 19 is to view.
Figure 21 is the bryllium bronze constructional drawing after age hardness is handled.
Figure 22 is the G-G cutaway view of Figure 18.
Figure 23 is that the H of Figure 19 is to view.
Figure 24 is the constructional drawing after bryllium bronze and the aluminium pressure diecasting moulding.
Figure 25 is the I-I cutaway view of Figure 24.
Among the figure: 1, packing ring, 2, hexagon thin nut, 3, spring, 4, nut, 5, flat gasket, 6, normal type single coil spring lock washer; 7, six nuts of 1 type, 8, hexagon thin nut, 9, double end stud, 10, the manual base that declutches, 11, steel ball, 12, the manual swivel that declutches; 13, SF-1 pad, 14, loose floodgate spring, 15, packing ring, 16, bolt, 17, nut, 18, Hall element; 19, setting nut, 20, interior hexagonal cylinder head bolt, 21, normal type single coil spring lock washer, 22, spring washer, 23, screw, 24, making leaf spring; 25, flathead screw, 26, governing screw, 27, the iron core outer ring, 28, the iron core inner ring, 29, socket head cap screw, 30, the iron core base plate; 31, coil rack, 32, coil, 33, magnetopause plate, 34, cushion blocking, 35, reciprocal bearing, 36, permanent magnet, 37, hexagon socket countersunk flat cap head screw, 38, the friction lining base; 39, friction bar, 40, friction lining, 50, control circuit, 51, indicator lamp, 52, switching value output, 53, screw insert, 54, setting nut.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
Shown in Fig. 1-4; The core assembly of magnet stopper of the present invention comprises iron core base plate 30, iron core outer ring 27, iron core inner ring 28, coil 32, skeleton 31; Iron core base plate 30 is rectangular-shaped, circular hole of the each side formation of iron core outer ring 27, two circular hole symmetric arrangement.Iron core inner ring 28 is cylindrical; Two circular holes of iron core outer ring 27 are respectively inserted an iron core inner ring 28; The center of circle of the circular hole of iron core outer ring 27 is on the axis of iron core inner ring 28; And the diameter of iron core inner ring 28 is littler than circular hole, makes the external diameter of iron core outer ring 28 between the internal diameter of iron core outer ring 27 circular holes, form annular groove.It is medial surface that iron core outer ring 27, iron core inner ring 28 process the lower surface that adopts several socket head cap screws 29 to be installed on iron core base plate 30 in the back respectively.Two coils 32 each on a skeleton 31, be installed in the annular groove of both sides then respectively and pour into epoxy resin, thereby form core assembly.When coil 32 energisings, core assembly can produce electromagnetic force.Core assembly of the present invention adopts multi-thread circle package assembly design; But it is different from the disclosed content of the said patent No. ZL200820106008.6 of background technology; Because of a plurality of wire casings of aforementioned patent technical scheme are cut on same pedestal, the technical matters of its existence is that difficulty of processing is big and manufacturing cost is high.Core assembly of the present invention then is to adopt split typely to assemble, and it is simple and convenient assembly not only, and disperseed configuration, increased dissipating area, depowering, energy-saving material-saving, power be little, reduce production costs simultaneously.
Referring to Fig. 5,6,9,10, the magnetopause board component comprises magnetopause plate 33, magnetopause plate 33 rectangular shapes, and size is corresponding with iron core base plate 30.Magnetopause plate 33 be in core assembly iron core outer ring 27, iron core inner ring 28 and coil 32 the below and leave the gap.Magnetopause plate 33 parallels layout and is connected four double end studs 9 between the two with iron core base plate 30; Double end stud 9 vertically passes iron core base plate 30, iron core outer ring 27 and magnetopause plate 33; In iron core base plate 30 and 33 outer casing springs 3 of magnetopause plate; The two ends up and down of spring 3 peak at the inwall of iron core base plate 30, magnetopause plate 33 respectively, under the elastic force effect of spring 3, and outwards motion down of magnetopause plate 33.The lower end of double end stud 9 (promptly being in magnetopause plate 33 belows) screws in packing ring 1; The upper end of double end stud 9 (promptly being in iron core base plate 30 tops) is provided with fixation kit; Fixation kit comprises flat gasket 5, normal type single coil spring lock washer 6,1 type hexagonal nut 7, hexagon thin nut 8; The upper end of double end stud 9 (promptly being in iron core base plate 30 tops) screws in flat gasket 5, normal type single coil spring lock washer 6,1 type hexagonal nut 7, hexagon thin nut 8 successively, through fixation kit drg is fixedly installed on the pedestal of towing machine.The upper surface of magnetopause plate 33 is that medial surface fixedly installs four cushion blockings 34, and cushion blocking 34 protrudes from the upper surface of magnetopause plate 33 slightly, the noise that cushion blocking 34 produces in the time of can reducing the impact of magnetopause plate.The lower surface of magnetopause plate 33 is that lateral surface middle part (being a portion) concaves and forms the spherical calotte shape.
Also be provided with manually declutch assembly and adjusting part between core assembly and magnetopause board component.
The assembly that manually declutches comprises the base 10 that manually declutches, steel ball 11, manually declutch swivel 12, SF-1 pad 13, loose floodgate spring 14, interior hexagonal cylinder head bolt 20; The base 10 that manually declutches is fixed in the upper surface middle part of iron core base plate 30; The base 10 that manually declutches forms one annular groove; Be used to put several steel balls 11, the swivel 12 that manually declutches places on the steel ball 11, and its external diameter is suitable with the annular groove internal diameter of the base 10 that manually declutches.Interior hexagonal cylinder head bolt 20 vertically passes the swivel 12 that manually declutches, manually declutch base 10, iron core base plate 30, magnetopause plate 33; The end that interior hexagonal cylinder head bolt 20 stretches out magnetopause plate 33 lower surfaces screws in nut 4 and packing ring, stretches out the swivel 12 exterior ends of manually declutching and screws in SF-1 pad 13, nut 17, normal type single coil spring lock washer 21, hexagon thin nut 2 successively.Manually declutch between swivel 12 and the bolt 20 through being threaded.In the interior hexagonal cylinder head bolt 20 overcoat loose floodgate springs 14 of 33 of iron core base plate 30 and magnetopause plates, and screw in a setting nut, the upper and lower side of loose floodgate spring 14 peaks at inwall, the setting nut 54 of iron core base plate 30 respectively.When after drg is realized braking, needing the hand reset operation, the turn swivel 12 that declutches just can drive the magnetopause board component towards the motion of core assembly direction and reset.
Adjusting part is laid in four jiaos of drg; Each adjusting part comprises setting nut 19, governing screw 26 and flathead screw 25; Governing screw 26 is vertically passed iron core base plate 30, iron core outer ring 27 and magnetopause plate 33, and flathead screw 25 screws in the upper end of governing screw 26, and lower end (promptly being in magnetopause plate 33 belows) screws in setting nut 19; And the stretch through through hole of governing screw 26 of magnetopause plate 33 is equipped with reciprocal bearing 35, magnetopause plate 33 motions of being convenient to lead.Governing screw 26 forms step, and the step of governing screw 26 pushes up with magnetopause plate 33 mutually.
(1), when assembling, the gap between magnetopause plate and the core assembly is adjusted through governing screw 26.Flathead screw 25 tightened prop up governing screw 26; Governing screw 26 can't be rotated, then the magnetopause sleeve-board is gone into governing screw 26, it is withstood on the governing screw 26 positioning table terraces with press; With setting nut 19 lockings, again flathead screw 25 is unscrewed to corresponding position then.When magnet stopper is assembled to the towing machine both sides, double end stud 9 is screwed in the corresponding screw on the machine bed, again drg is inserted in four double end studs; Be inserted in packing ring 1 on the double end stud 9; And make its brake surface be adjacent to the towing machine brake wheel, and lock the nut on the double end stud 9 then, tighten setting nut 19 at last again; Make it prop up the towing machine attachment face, make governing screw return corresponding distance simultaneously backward.
(2), after friction lining is crossed wearing and tearing, unclamp setting nut 19, tighten flathead screw 25 and make governing screw 26 step surfaces head on the magnetopause plate, adjust the gap of reserving by governing screw 26; The friction member brake surface is close to the towing machine brake wheel simultaneously; Hexagonal nut above the also tight then thru-bolt, next unclamps flathead screw 25, tightens setting nut 19 again; Make it prop up the towing machine attachment face, make governing screw return corresponding distance simultaneously backward.This adjusting part mode has solved prior art preferably and has had on-the-spot technical matters that can't the adjusting play, and a kind of efficient, easy and safe regulating mechanism is provided.After friction lining is crossed wearing and tearing, adopt above-mentioned adjusting part to carry out adjust the clearance in the scene.
The lower surface of magnetopause plate 33 is that lateral surface is installed friction member; Referring to Fig. 7,8,11,12, friction member comprises friction lining 40, friction bar 39, friction lining base 38 and flathead screw 37, and friction lining 40 adopts bryllium bronze to process; And friction bar 39 adopts aluminium to process; Curved of the one side that friction lining 40 lateral surfaces promptly contact with traction sheave (being the c face) is inwardly encircleed, and friction lining 40 is compound in the lateral surface of friction bar 39; Friction bar 39 is fixedly linked through hexagon socket countersunk flat cap head screw 37 and friction lining base 38.Friction lining base 38 edges are by Z-shaped making leaf spring 24 longitudinal registers in cross section, and making leaf spring 24 is fixedly linked through screw 23 and magnetopause plate 33, also is encased inside spring washer 22 in the screw 23.The lateral surface of friction lining base 38 middle part (being the b face) is the spherical calotte shape to evagination, and a portion of itself and magnetopause plate 33 lateral surfaces is suitable.The lateral surface middle part of friction lining base 38 also has shrinkage pool, the lower end and the nut 4 of hexagonal cylinder head bolt 20 in can stretching in the shrinkage pool.When electromagnet cut off the power supply, spring force promoted friction member and moves to traction sheave, realizes band-type brake, owing to adopt floating type the connection between magnetopause plate and friction member, thus increased the area of contact of friction member and traction sheave, guarantee the requirement of braking force, abrasion loss and temperature.Simultaneously, what match therewith is, adopts the metal composite friction material to make friction member, and it has increased friction coefficient, has reduced to impact, and heat absorptivity better, stable performance, material repeatability be good, improved deceleration and stopping performance.
Magnet stopper of the present invention has the braking and the two states that resets.When abnormal operation of elevator, system cut-off makes the core assembly dead electricity, and electromagnetic force disappears; At this moment, spring 3 promotes the magnetopause board component and friction member moves to traction sheave, and friction lining 40 is contacted with traction sheave; Contact with traction sheave and be non-contact even rigidly connect when touching friction lining, because the friction lining base adopts the fine setting draw bail of floating between magnetopause plate and friction member, friction member can the trace rotation; Contact with the traction wheel face until friction lining, thereby increased both contact surfaces, realize band-type brake; Make towing machine be decelerated to stall gradually, reach stop towing machine purpose, realize braking function.The fine setting draw bail of floating is adopted in this design; When increasing area of contact; Improve that bilateral contacts between friction lining and the traction sheave; Cause linear contact or projecting point contact when solving the rigidity contact in the braking procedure easily, the causes friction member wearing and tearing are very fast, local temperature is too high and burn, cause braking force not enough, brake jiggly technical matters.Adopt metal friction spare, can under less acting force of the spring, realize the braking and the control that resets, reduce power of electromagnet, saving in material.After elevator recovers normal operating condition, the electromagnetic force that system's normal power-up produces electromagnet, at this moment; Under the effect of electromagnetic force, drive the motion of magnetopause plate, and then make friction member break away from the traction sheave of towing machine; In this process; Magnetopause plate 33 compression springs 3 are realized reset function, the towing machine normal operation.
Magnet stopper of the present invention also is provided with and detects and control group; Detection and control group have two purposes; The one, the braking and the reset mode of detection drg, the 2nd, the wear state excessively of detection friction lining, it is through switching value output signal and status indicator lamp show state.
The method of the position probing of detection of the present invention and control group is to adopt displacement pickup and control circuit to realize jointly.The proportional voltage signal in gap between displacement pickup output and the sound plate (being magnetopause plate and iron core base plate), control circuit converts voltage signal to switching value signal and indicator lamp signal.Displacement pickup is called linear transducer again, and it is divided into inductive displacement transducer, capacitive displacement transducer, optical displacement sensor, ultrasonic type displacement pickup, Hall displacement transducer etc.What adopt in the present embodiment is Hall displacement transducer, and it is a kind of Magnetic Sensor, and the output voltage of Hall element is directly proportional with its residing magnetic-field intensity.Therefore be placed on Hall element in the magnetic field environment that a magnetic-field intensity changes with displacement gradient, Hall element just can be exported and the proportional voltage of displacement, the principle of work of Here it is hall displacement transducer.Referring to Figure 13.Adopt the Hall displacement transducer Displacement Measurement to have lot of advantages: inertia is little, frequency response is fast, reliable operation, life-span are long.
Detection and control group comprise Hall element 18, control circuit 50 and permanent magnet 36, and Hall element 18 is installed on iron core outer ring 27 lateral surfaces through bolt 16 and packing ring 15; Permanent magnet 36 is installed on the medial surface of magnetopause plate 33, and permanent magnet 36 is corresponding with the position of Hall element 18.Referring to Figure 14,15, permanent magnet 36 is producing the magnetic field that a magnetic field intensity gradient changes along its axial space.The magnetic-field intensity of Hall element 18 positions changes with the gap change between magnetopause plate and the iron core base plate, and both gaps are little, and it then is in a stronger magnetic field; When both gaps were big, it then was in a more weak magnetic field, its output voltage thereby difference.Control circuit 50 converts the voltage signal of Hall element 18 to indicator signal and switching value signal, respectively by indicator lamp 51, switching value output 52 outputs.When two sheet separations during, export a switching value signal and light indicator signal, the reset mode of sign drg less than certain value; When the gap between two plates during greater than certain value, to export another switching value signal and light indicator signal, the sign brake friction member was in wear state.
When drg resetted, the gap between core assembly and the magnetopause board component reduced, and the switching value output signal A of hall position switch overturns, and cooresponding A indicator lamp lights, and shows the reset mode of drg.When the drg glancing impact, the gap increase between core assembly and the magnetopause board component, the switching value output signal A of hall position switch overturns once more, and cooresponding A indicator lamp extinguishes, and shows the braking mode of drg.
When friction disc wear, the gap between magnetopause board component and the core assembly further increases, and when may wear to the trouble free service critical value, the switching value output signal B of hall position switch overturns, and cooresponding B indicator lamp lights, and shows the wear state of crossing of drg.
The present invention adopts accurate position detecting device, shows the mistake wear state of brakeage state and friction lining through switching value signal output signal and indicator lamp, and it is highly sensitive, long service life, air gap is low, control stiffness is high.Through monitoring to the friction disc wear amount, can be the control wearing and tearing timely alarm is provided, thereby improved the accuracy of control, improve the safe work state of towing machine.
Certainly, those of ordinary skill in the art will be appreciated that the foregoing description is a preferred version of magnet stopper of the present invention; Magnet stopper of the present invention also has many embodiment; For example, can the concavo-convex sphere fit structure exchange of magnetopause plate and friction lining base that is: outwards be convexed into dome shape in the lateral surface middle part of magnetopause plate; Be dome shape and concave in the middle part of the lateral surface of friction lining base; The evagination sphere portion of itself and magnetopause plate lateral surface is suitable, and other content is same as the previously described embodiments, also can reach identical technical purpose.
Above-mentioned preferred embodiment to magnet stopper of the present invention has been done detailed description, but those of ordinary skill in the art will be appreciated that any conversion to the foregoing description, modification all fall into protection scope of the present invention.
Friction member embodiment one structure of magnet stopper of the present invention can be referring to Fig. 7,8,11,12, and it is made of metal, and comprises friction lining 40, friction bar 39, friction lining base 38, and friction lining 40 adopts bryllium bronze to process, and friction bar 39 adopts aluminium to process.Friction lining 40 is compound in the lateral surface of friction bar 39, and the friction face of friction lining 40 is an arcwall face; The medial surface and the friction lining base 38 of friction bar 39 are fixedly linked through several screws 37, and the lateral surface middle part of friction lining base 38 is dome shape to evagination.Adopt the metal composite friction material to make friction member, it has increased friction coefficient, has reduced to impact, and heat absorptivity better, stable performance, material repeatability be good, improved deceleration and stopping performance.
The friction member embodiment two of magnet stopper of the present invention: the lateral surface middle part of friction lining base 38 adopts indent to be dome shape, and other content is identical with embodiment one.
The manufacturing approach of magnet stopper friction member of the present invention:
The friction member of present embodiment is compound with aluminium (friction bar 39) and bryllium bronze (friction lining 40) earlier, forms in friction lining base 38 through screw retention again.It is matrix with aluminium; Friction lining with QBe2.0 (C17200) bryllium bronze as with the friction material of traction sheave direct contact, in addition age hardness is handled, and makes full use of the characteristic of bryllium bronze high strength, high abrasion; To realize the braking reliability to traction sheave, concrete manufacturing step is explained as follows:
Embodiment one:
One, the making flow process of bryllium bronze friction lining: die-cut blanking → punch forming → age hardness is handled, and details are as follows:
1, die-cut blanking: select thickness 1.1mm for use, through the soft attitude QBe2.0 of solution treatment (C17200) bryllium bronze sheet material; It is put in integrally punching squarely on the open-type inclinable press; And go out four manholes 41 and four square anticreep breach 42; Four through holes 41 with the center-point of square plate be the center of circle along around be uniformly distributed with, four anticreep breach 42 are and are symmetrically arranged in two relative edge edges, and anticreep breach 42 is near other two edges.Referring to Figure 16,17.
Soft attitude bryllium bronze plate after the solution treatment adopts the whole blanking of open-type inclinable press, makes the smooth burr free of product, and when stamping forming, effectively prevents the bending cracking.Do not produce advantages such as spark when in addition, bryllium bronze also has no magnetic, bump.
2, punch forming: will not turn up, and through hole 41 is stretched with the both sides of anticreep breach 42; Again the bryllium bronze plate is placed forming mould, adopt punch press that the arc that the bryllium bronze plate strikes out indent is planar.
Stretchable holes and turn up the edge of anticreep breach, when with the aluminium pressure diecasting moulding after, bryllium bronze can be fitted with aluminium preferably, and effective anticreep.Referring to Figure 18-20.
3, age hardness is handled: adopt the vacuum furnace heating, with 285 ℃ of temperature insulations 3.5 hours, fully discharge fabrication stress, and improve intensity, hardness, resistance to abrasion, fatigue limit and the resistance to effect of heat of bryllium bronze, with the characteristic of abundant realization bryllium bronze.
During ageing treatment, for preventing to add thermal deformation, part can be fixed with frock clamp.Referring to Figure 21-23.
Two, die cast: with punch forming and through the bryllium bronze of ageing treatment as inserts, 150 ℃ of location down in preheated mold, mould remaining time 7.0s; The injection speed 3.6m/s of aluminium water, injection power 3900N, 670 ℃ of moulding of cast temperature; Dwell time 4.0s, water-cooled then.Referring to 24,25.Simultaneously, friction bar 39 forms four screw inserts 53.
Because the molten point of aluminium is lower, and whole press casting procedure can not produce harmful effect to the bryllium bronze friction lining of handling through age hardness usually about tens seconds.It has mainly utilized two kinds of material melting point differences (1280 ℃ of bryllium bronze fusing points, 680 ℃ of aluminium fusing points), adopts the physical bond method, and two kinds of materials are combined securely.
Friction member mainly is the weight in order to alleviate with aluminium as matrix, utilizes the excellent heat dispersion performance of aluminium simultaneously, distributes to carry out actv. at the issuable heat of glancing impact.
Three, behind the die cast; Arc surface to friction lining carries out form grinding and lapped finish; Form grinding carries out grinding through grinding wheel dresser on surface frinding machine; Carry out polishing through the arc surface that grinds form grinding again,, guarantee the reliability of braking so that arc surface and traction sheave can better be fitted.
Four, the friction lining base of die cast lateral surface middle part convex or concave and formation dome shape in mould.
Five, the friction lining base is connected through several screws with finishing back friction bar, forms friction member.Because the intensity of aluminium is lower, the friction bar adopts corrosion-resistant steel screw insert 53 as threaded insert, to guarantee the Joint strenght of screw thread.
In the foregoing description, will rub bar and friction lining base split production, and then continuous through screw retention.Certainly, the forming process of friction lining base and first, second and third step relative separation in the 4th step.Therefore, can it be interspersed in before arbitrary step.
Can certainly friction bar and friction lining base is one-body molded, promptly in previous embodiment second step, be the friction lining pedestal of convex or concave dome shape directly, thereby save fourth, fifth step at die for molding lateral surface middle part.
The manufacturing approach embodiment two of magnet stopper friction member of the present invention:
One, the making flow process of bryllium bronze friction lining:
1, die-cut blanking: selecting thickness for use is the bryllium bronze plate of 1.1mm;
3, age hardness is handled: adopt the vacuum furnace heating, with 290 ℃ of temperature insulations 4 hours.
Two, die cast: with punch forming through and the bryllium bronze of ageing treatment as inserts, 180 ℃ of location down in preheated mold, mould remaining time 6.0s; The injection speed 3.3m/s of aluminium water, injection power 3500N, 680 ℃ of moulding of cast temperature; Dwell time 4.5s, water-cooled then.
Other content of present embodiment is identical with embodiment one.
Embodiment three:
One, the making flow process of bryllium bronze friction lining:
1, die-cut blanking: the bryllium bronze plate of selecting thickness 1.4mm for use;
3, age hardness is handled: adopt the vacuum furnace heating, with 260 ℃ of temperature insulations 2.8 hours.
Two, die cast: with punch forming through and the bryllium bronze of ageing treatment as inserts, 200 ℃ of location down in preheated mold, mould remaining time 7.5s; The injection speed 3.8m/s of aluminium water, injection power 3700N, 660 ℃ of moulding of cast temperature; Dwell time 3.0s, water-cooled then.
Other content of present embodiment is identical with embodiment one.
Embodiment four:
One, the making flow process of bryllium bronze friction lining:
1, die-cut blanking: the bryllium bronze plate of selecting thickness 1.2mm for use;
3, age hardness is handled: adopt the vacuum furnace heating, with 420 ℃ of temperature insulations 3.0 hours.
Two, die cast: with punch forming through and the bryllium bronze of ageing treatment as inserts, 190 ℃ of location down in preheated mold, mould remaining time 5.0s; The injection speed 3.2m/s of aluminium water, injection power 3200N, 690 ℃ of moulding of cast temperature; Dwell time 3.6s, water-cooled then.
Other content of present embodiment is identical with embodiment one.
Embodiment five:
One, the making flow process of bryllium bronze friction lining:
1, die-cut blanking: the bryllium bronze plate of selecting thickness 1.0mm for use;
3, age hardness is handled: adopt the vacuum furnace heating, with 380 ℃ of temperature insulations 3.0 hours.
Two, die cast: with punch forming through and the bryllium bronze of ageing treatment as inserts, 205 ℃ of location down in preheated mold, mould remaining time 5.6s; The injection speed 3.9m/s of aluminium water, injection power 3300N, 680 ℃ of moulding of cast temperature; Dwell time 4.9s, water-cooled then.
Other content of present embodiment is identical with embodiment one.
Embodiment six:
One, the making flow process of bryllium bronze friction lining:
1, die-cut blanking: the bryllium bronze plate of selecting thickness 0.9mm for use;
3, age hardness is handled: adopt the vacuum furnace heating, with 430 ℃ of temperature insulations 3.4 hours.
Two, die cast: with punch forming through and the bryllium bronze of ageing treatment as inserts, 170 ℃ of location down in preheated mold, mould remaining time 5.5s; The injection speed 3.5m/s of aluminium water, injection power 3100N, 685 ℃ of moulding of cast temperature; Dwell time 4.0s, water-cooled then.
Other content of present embodiment is identical with embodiment one.
Embodiment seven:
One, the making flow process of bryllium bronze friction lining:
1, die-cut blanking: the bryllium bronze plate of selecting thickness 1.3mm for use;
3, age hardness is handled: adopt the vacuum furnace heating, with 360 ℃ of temperature insulations 4.4 hours.
Two, die cast: with punch forming through and the bryllium bronze of ageing treatment as inserts, 195 ℃ of location down in preheated mold, mould remaining time 7.8s; The injection speed 3.6m/s of aluminium water, injection power 3700N, 690 ℃ of moulding of cast temperature; Dwell time 4.0s, water-cooled then.
Other content of present embodiment is identical with embodiment one.
The friction lining of magnet stopper of the present invention adopts composite material; And take floating type connection; Magnet coil adopts multi-thread circle design, realizes that braking force is big, abrasion loss is little, the friction lining heating temp is low, steady, little, the little purpose of flexible safety, leading dimensions and the installation dimension of declutching of noise of brake application braking.
Claims (20)
1. magnet stopper comprises core assembly, magnetopause board component, friction member, the manual assembly that declutches, and the magnetopause board component comprises the magnetopause plate, and the assembly that manually declutches comprises bolt, it is characterized in that:
Core assembly comprises iron core base plate, iron core outer ring, iron core inner ring, coil and skeleton; Iron core base plate medial surface secured core outer ring, iron core inner ring; The iron core outer ring forms several holes; The iron core inner ring is in the hole of iron core outer ring, forms groove between iron core inner ring and iron core outer ring, and the skeleton that is wound with coil is installed in the groove;
The magnetopause plate that parallels laying with the iron core base plate is in the below of iron core outer ring, iron core inner ring and coil; Magnetopause plate and iron core base plate link to each other through several double end studs and the bolt that is in the middle part; Bolt passes iron core base plate, magnetopause plate, and the end that bolt stretches out outside the magnetopause plate screws in nut; Bolt overcoat first loose floodgate spring, and screw in a setting nut, the two ends of first loose floodgate spring peak at iron core plate inner wall, setting nut respectively; Double end stud passes iron core base plate, iron core outer ring and magnetopause plate, and double end stud overcoat second spring, second both ends of the spring peak at iron core base plate, magnetopause plate inwall respectively; The end that double end stud stretches out outside the magnetopause plate screws in packing ring; Friction member is in the lateral surface of magnetopause plate, friction member and magnetopause plate located lateral, and friction member adopts metal to process;
The lateral surface of the magnetopause plate middle part formation dome shape that concaves, the lateral surface middle part of friction member is dome shape to evagination, and is suitable with the interior concave spherical surface portion of magnetopause plate lateral surface; Perhaps, the lateral surface of magnetopause plate middle part outwards convexes into dome shape, and the lateral surface middle part of friction member concaves and is dome shape, and is suitable with the evagination sphere portion of magnetopause plate lateral surface.
2. magnet stopper according to claim 1 is characterized in that, described iron core outer ring forms a pair of circular hole, and described iron core inner ring is cylindrical, and the iron core inner ring is installed in the circular hole of iron core outer ring; Iron core outer ring, iron core inner ring link to each other through several screw retention with the iron core base plate.
3. magnet stopper according to claim 1; It is characterized in that; Described friction member comprises friction lining, friction bar, friction lining base, and friction lining adopts bryllium bronze to process, and the friction bar adopts aluminium to process; Friction lining is compound in the lateral surface of friction bar, and the medial surface of friction bar is fixedly linked through flathead screw and friction lining base; The friction face of friction lining is an arcwall face; The friction lining base links to each other with the magnetopause plate through making leaf spring and screw; The lateral surface middle part that the evagination sphere at said friction member lateral surface middle part or interior concave spherical surface are located at the friction lining base.
4. magnet stopper according to claim 3 is characterized in that, the evagination sphere of friction lining base or interior concave spherical surface middle part has shrinkage pool, stretches into the end of said bolt in the shrinkage pool and is threaded onto the nut of bolt end.
5. magnet stopper according to claim 1; It is characterized in that; Be provided with the gap adjustment assembly between core assembly and magnetopause board component, this adjusting part comprises setting nut, governing screw and flathead screw, and flathead screw screws in the governing screw upper end after passing the iron core base plate; Governing screw is passed iron core outer ring and magnetopause plate, and the end that governing screw is stretched out the magnetopause plate screws in setting nut; Governing screw forms step, and the step of governing screw pushes up with magnetopause plate inwall mutually.
6. magnet stopper according to claim 5 is characterized in that, reciprocal bearing is installed in stretch through perforation place of governing screw of magnetopause plate.
7. according to claim 1 or 5 or 6 described magnet stoppers, it is characterized in that magnetopause plate medial surface is fixed with cushion blocking, cushion blocking protrudes from the surface of magnetopause plate.
8. magnet stopper according to claim 1 is characterized in that, the end that double end stud stretches out the iron core base plate screws in nut and packing ring.
9. magnet stopper according to claim 1 is characterized in that, core assembly is installed Hall element, and Hall element links to each other with control circuit; The magnetopause plate is equipped with and the corresponding permanent magnet in Hall element position.
10. the friction member of a magnet stopper is characterized in that: be made of metal, comprise friction lining, friction bar, friction lining base, friction lining is compound in the lateral surface of friction bar; Medial surface and the friction lining base of friction bar are fixedly linked, and the lateral surface of friction lining base middle part is dome shape to evagination and perhaps concaves and be dome shape.
11. the friction member of magnet stopper as claimed in claim 10 is characterized in that: described friction lining adopts bryllium bronze to process, and the friction face of friction lining is an arcwall face, and the friction bar adopts aluminium to process.
12. the manufacturing approach of a magnet stopper friction member is characterized in that carrying out according to the following steps:
One, die-cut blanking: select bryllium bronze sheet material for use, place blanking die, adopt the die-cut blanking of punch press;
Two, punch forming: the bryllium bronze plate of die-cut blanking is placed forming mould, adopt punch press that the bryllium bronze plate is struck out the curved shape of cross-sectional plane;
Three, age hardness is handled: adopt vacuum furnace to stamping forming bryllium bronze heating and insulation;
Four, with the aluminium base die cast: as inserts, place location in the preheated mold with punch forming and the bryllium bronze after ageing treatment, stay mould, inject aluminium water, with bryllium bronze and aluminium base die cast, pressurize then, water-cooled again; The aluminium base lateral surface of die cast middle part is dome shape or concaves to evagination and is dome shape;
Five, the extrados to bryllium bronze carries out grinding and grinding through emery wheel.
13. the manufacturing approach of magnet stopper friction member as claimed in claim 12 is characterized in that:
In the first step; It is square to select for use bryllium bronze sheet material to be die-cut into, and goes out several manholes and square anticreep breach, and through hole is that the center of circle is along being uniformly distributed with all around with the center-point of square plate; The anticreep breach is and is symmetrically arranged in two relative edge edges, and the anticreep breach is near other two edges;
In second step, with not turning up with the both sides of anticreep breach, and the stretching through hole; Bryllium bronze plate with die-cut blanking places forming mould simultaneously, adopts punch press that the bryllium bronze plate is struck out the curved shape of cross-sectional plane.
14. the manufacturing approach of magnet stopper friction member as claimed in claim 12 is characterized in that: in the 3rd step, adopt the vacuum furnace heating, with 250 ℃～450 ℃ temperature insulations 2～5 hours.
15. the manufacturing approach of magnet stopper friction member as claimed in claim 12; It is characterized in that: in the 4th step, locate mould remaining time 4.0～8.0s down for 150 ℃～210 ℃ in preheated mold; Aluminium water is with injection speed 3.0～4.0m/s; Injection power 3000～4000N, 650 ℃～700 ℃ moulding of cast temperature, dwell time 2.0～5.0s.
16. the manufacturing approach of a magnet stopper friction member is characterized in that carrying out according to the following steps:
One, die-cut blanking: select bryllium bronze sheet material for use, place blanking die, adopt the die-cut blanking of punch press;
Two, punch forming: the bryllium bronze plate of die-cut blanking is placed forming mould, adopt punch press that the bryllium bronze plate is struck out the curved shape of cross-sectional plane;
Three, age hardness is handled: adopt vacuum furnace to stamping forming bryllium bronze heating and insulation;
Four, with friction bar die cast: as inserts, place location in the preheated mold with punch forming and the bryllium bronze after ageing treatment, stay mould, inject aluminium water, with bryllium bronze and friction bar die cast, pressurize then, water-cooled again;
Five, the extrados to bryllium bronze carries out grinding and grinding through emery wheel.
Six, the friction lining base that in mould, is dome shape in the middle part of the die cast lateral surface;
Seven, the friction lining base of the 6th step being processed is captiveed joint with the friction bar of handling through the 5th step.
17. the manufacturing approach of magnet stopper friction member as claimed in claim 16 is characterized in that:
In the first step; It is square to select for use bryllium bronze sheet material to be die-cut into, and goes out several manholes and square anticreep breach, and through hole is that the center of circle is along being uniformly distributed with all around with the center-point of square plate; The anticreep breach is and is symmetrically arranged in two relative edge edges, and the anticreep breach is near other two edges;
In second step, with not turning up with the both sides of anticreep breach, and the stretching through hole; Bryllium bronze plate with die-cut blanking places forming mould simultaneously, adopts punch press that the bryllium bronze plate is struck out the curved shape of cross-sectional plane.
18. the manufacturing approach of magnet stopper friction member as claimed in claim 16 is characterized in that: in the 3rd step, adopt the vacuum furnace heating, with 250 ℃～450 ℃ temperature insulations 2～5 hours.
19. the manufacturing approach of magnet stopper friction member as claimed in claim 16; It is characterized in that: in the 4th step, locate mould remaining time 4.0～8.0s down for 150 ℃～210 ℃ in preheated mold; Aluminium water is with injection speed 3.0～4.0m/s; Injection power 3000～4000N, 650 ℃～700 ℃ moulding of cast temperature, dwell time 2.0～5.0s.
20. the manufacturing approach of magnet stopper friction member as claimed in claim 16 is characterized in that: the 6th step was in before the first step, second step, the 3rd step, the 4th step or the 5th step, and the friction lining base is connected through screw retention with the friction bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101144100A CN101798036B (en) | 2010-02-25 | 2010-02-25 | Electromagnetic brake, friction piece thereof and friction piece manufacture method |
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| CN2010101144100A CN101798036B (en) | 2010-02-25 | 2010-02-25 | Electromagnetic brake, friction piece thereof and friction piece manufacture method |
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Address after: 311121 water tower village of Zhongtai village, Yuhang District, Hangzhou, Zhejiang Patentee after: HANGZHOU HUNING ELEVATOR PARTS CO., LTD. Address before: 311121 water tower village of Zhongtai village, Yuhang District, Hangzhou, Zhejiang Patentee before: Hangzhou Huning Elevator Fitting Co., Ltd. |
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Address after: Yuhang Thailand Street Tower Village in Hangzhou City, Zhejiang province 311121 Patentee after: HANGZHOU HUNING ELEVATOR PARTS CO., LTD. Address before: 311121 water tower village of Zhongtai village, Yuhang District, Hangzhou, Zhejiang Patentee before: HANGZHOU HUNING ELEVATOR PARTS CO., LTD. |