CN102311065B - Electromagnetic disc brake with antifriction device - Google Patents
Electromagnetic disc brake with antifriction device Download PDFInfo
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- CN102311065B CN102311065B CN 201110228459 CN201110228459A CN102311065B CN 102311065 B CN102311065 B CN 102311065B CN 201110228459 CN201110228459 CN 201110228459 CN 201110228459 A CN201110228459 A CN 201110228459A CN 102311065 B CN102311065 B CN 102311065B
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Abstract
The invention discloses an electromagnetic disc brake with an antifriction device, which comprises a stator shell, a coil, an armature, a fixing pin roll and two groups of friction disc components. The electromagnetic disc brake with the antifriction device is characterized in that the electromagnetic disc brake additionally comprises a friction plate and a fixed support, and the friction plate is connected with the stator shell through a friction plate connecting screw and a bushing and can move on the bushing in the axial direction for a micro distance; the fixed support is arranged between the friction plate and the armature, the fixed support is fixedly installed on the fixing pin roll, and gaps are kept between the fixed support and the friction plate as well as between the fixed support and the armature; and a resetting component which is used for keeping the friction plate away from the fixed support is arranged between the friction plate and the fixed support. The resetting component is adopted to be arranged between the fixed support and the friction plate to avoid mistaken friction between the friction disc and the brake disc of the electromagnetic disc brake when the electromagnetic disc brake is released, the braking effect, the safety of the electromagnetic disc brake with the antifriction device are improved, and the service life of the electromagnetic disc brake with the antifriction device is prolonged.
Description
Technical field
The present invention relates to a kind of electromagnetic disc type brake, relate in particular to a kind of avoid under the brake off state because of friction lining and brake disc between mistake friction damage the electromagnetic disc type brake with chafing gear of friction lining, belong to the production field of electromagnetism butterfly drg.
Background technology
Magnet stopper is the mechanical device that utilizes power supply and spring to brake as countershaft or the brake disc of propulsion source, wherein, the magnet stopper that brake disc (brake disc is connected with the machine that needs braking such as the rotor of winch) is braked is commonly referred to as electromagnetic disc type brake, its structure is: comprise stator case, coil, armature, pedestal and two groups of friction plate assemblies, described coil is installed in the described stator case, described armature is installed in described stator case near an end of described coil by screw and Elastip pin, described pedestal and described stator case are near an end screw attachment of described armature, form the U-shaped unit, this U-shaped unit can be mobile at fixed pin shaft, described fixed pin shaft one end is fixed on machinery (such as the winch) support, the other end is unsettled, therefore the U-shaped unit forms a beam type structure at fixed pin shaft, two friction plate assemblies are installed on respectively on described pedestal and the described armature, each is organized described friction plate assembly and includes a friction lining, and two friction linings face to face; Take the central axial direction of described coil as axial direction, described pedestal can move by small distance on described axial direction, and described armature can be mobile at described axial direction.Above-mentioned magnet stopper is mainly used on the weight-lifting equipment (such as elevator, tower crane etc.), and supporting is winch with it.Along with the continuous quickening of China's urbanization, new building is also more and more, more and more higher to the requirement of weight-lifting equipment.For magnet stopper, the client is more and more tighter to the requirement of life-span of product, safety and reliability, simultaneously energy-conservation, the comfort of product has been proposed clear and definite requirement.
The principle of work of above-mentioned electromagnetism butterfly drg is: when coil electricity produces magnetic field, magnetic line of force passes stator case and armature, and pass the air gap of stator case and armature residual gap, make the brake disc that breaks away from winch with the armature of friction plate assembly, thereby with the stator case adhesive, brake disc squeezes the friction lining realization disengaging of the friction plate assembly of opening pedestal one side simultaneously, and brake disc is realized rotating; When coil losing electricity, coil magnetic field disappears, torsion spring in the stator case promotes armature makes the friction lining of the friction plate assembly above it contact with brake disc, and the friction lining of the friction plate assembly of drive pedestal one side contacts with brake disc, and the brake disc in rotation is braked.
The defective of above-mentioned electromagnetism butterfly drg is: (1) is when brake off, the friction lining of armature one side breaks away from first, then by force crowded the opening of the friction lining of pedestal one side realized that both sides break away from by brake disc, the mistake friction may occur with brake disc in friction lining like this, thereby the friction lining temperature is raise, affect life-span and the braking effect of drg, accelerate the wearing and tearing of friction lining, thereby increase the adjustment frequency of brake clearance, cause the drg braking failure when serious, even burn drg and elevator, thereby cause safety problem.(2) for can be mobile at fixed pin shaft, two very long mounting holes that are used for passing fixed pin shaft have been designed on the pedestal of existing electromagnetism butterfly drg; Since will with the fixed pin shaft routing motion, the form and position tolerance accuracy requirement of this mounting hole is very high, after base body casting was finished, prior art was carried out the machine-shaping of this mounting hole with the processing mode of bore hole.Because this hole is very long, guarantee again simultaneously very high form and position tolerance accuracy requirement, therefore brought very large difficulty to processing.The result is that this mounting hole tooling cost is very high, and work efficiency is low, off gauge even waste product occur easily simultaneously, is unfavorable for producing in enormous quantities and Product Cost Control.Simultaneously, in order to cooperate the slotted hole on the pedestal, fixed pin shaft is compelled to do very longly, and not only tooling cost is very high, and the waste material.(3) when braking, the friction lining of armature one side is subjected to the brake disc tangential force to pass to stator through Elastip pin, pass to joint bolt between pedestal and the stator by stator again, pass to pedestal by joint bolt again, pass to fixed pin shaft by pedestal again, the transfer route that this power is transmitted is very long, increased brake disc rigid shock to drg when being braked, the structural strength of drg is subject to larger damage, reduced the life-span of drg, and this tangential force increased the risk of joint bolt stress deformation through the joint bolt between pedestal and the stator, can't guarantee the reliability and stability that pedestal connects with stator.(4) between stator case and the armature be rigid attachment, middle without buffering noise abatement element, drg is very large to the rigid shock of stator case at adhesive moment armature, causes drg noise when brake off very large; Friction lining contacts brake disc fast when braking, so drg noise when braking is also very large, have a strong impact on the comfort of mechanical terminations user (such as elevator customer).(5) in maloperation or when breaking down, make armature can't be by the adhesive of coil magnetic field power the time as reaching in the unexpected gap between outage or drg stator case and the armature, friction lining is the braking with locked wheels dish always, if need brake off (need to rise or descend such as elevator this moment, perhaps need more renewal of facing renewal, adjustment brake clearance etc.), all will bring because drg is in braking mode always very large difficulty, produce potential safety hazard when serious.(6) in the operational process of drg, brake disc and friction lining mistake can occur unavoidably cooperates and causes strong friction intensification damage equipment or cause the fortuitous phenomena of fire, existing drg does not provide corresponding safety control, make the safety performance of whole drg can not get further lifting, the development of restriction drg and application industry thereof.
Summary of the invention
Purpose of the present invention provides a kind of electromagnetism butterfly drg with chafing gear with regard to being in order to address the above problem, this drg can avoid under the brake off state because of friction lining and brake disc between mistake friction damages friction lining, also have life-saving, reduce noise, the advantage of the brake off of meeting an urgent need when mistake is braked.
In order to achieve the above object, the present invention has adopted following technical scheme:
The present invention includes stator case, coil, armature, fixed pin shaft, two groups of friction plate assemblies; The present invention also comprises friction plate and fixed support, and described friction plate is linked together by friction plate joint bolt and lining and described stator case and can moves at the microspur that described lining is made axial direction; Described fixed support is between described friction plate and described armature, and described fixed support is fixedly mounted on the fixed pin shaft, all remains with the gap between described fixed support and described friction plate and the described armature; Be provided with between described friction plate and the described fixed support and make described friction plate away from described support bracket fastened reposition element.
In the said structure, the effect of the pedestal in friction plate and the traditional electrical magnetic brake is the same, but himself structure and different from the connection structure of stator case.When brake off, the present invention makes friction plate away from fixed support by reposition element, because fixed support can not move, so being equivalent to friction plate moves to the direction away from brake disc, and the friction plate assembly band movable friction plate of friction plate one side correspondingly moves to the direction away from brake disc, thereby realizes the thorough disengaging of friction lining and the brake disc of two friction plate assemblies.
Particularly, be installed with stop screw by the jam nut that resets between described friction plate and the described fixed support, described stop screw passes the spacing hole at described friction plate and/or described fixed support middle part, described reposition element is positioned at described spacing hole, and described stop screw passes described reposition element.The convenient like this elasticity with reposition element makes friction plate away from fixed support.
More specifically, described reposition element can be spring or elastic caoutchouc or elastoplast, as long as it is just passable to have enough elasticity.
Further, be provided with through hole on the described friction plate, in the described through hole shaft sleeve of pin shaft be installed, described fixed pin shaft passes described shaft sleeve of pin shaft can move axially at described fixed pin shaft described friction plate; Described friction plate joint bolt and lining pass the rack sleeve of installing in the support pilot hole that is arranged on the described fixed support.Like this, " U-shaped unit " axial restraint on fixed pin shaft that friction plate and stator case form is finished by two supporters, a supporter is fixed pin shaft, another supporter is fixed support, and fixed support is fixedly connected with fixed pin shaft, has guaranteed that " U-shaped unit " can move axially on fixed pin shaft and fixed support reposefully.
Further, be provided with several armature pilot holes on the described armature, in the described armature pilot hole armature axle sleeve be installed, described armature is installed on the described fixed pin shaft by described armature axle sleeve and can moves axially at described fixed pin shaft.Because armature can be mobile at fixed pin shaft, so when braking, the friction lining of armature one side is subject to the tangential force of brake disc, directly being delivered to fixed pin shaft through armature gets on, do not pass through stator case and friction plate joint bolt, so obviously simplified the route that tangential force transmits, thereby alleviated braking tangential force to impact damage of the present invention.
Particularly, described two groups of friction plate assemblies comprise armature friction plate assembly and friction plate friction plate assembly; In the described armature friction plate assembly, friction lining directly is bonded on the described armature end face; In the described friction plate friction plate assembly, the friction disk is bonded on the fixed cap, is set with round section joint ring on the described fixed cap, and described fixed cap is connected with described friction plate with adjusting nut by adjusting bolt.Gap when adjustment bolt and adjusting nut can be regulated brake off between friction plate one side friction disk and the brake disc.
Further, described support bracket fastened both sides are respectively arranged with several counterbores, are provided with cushion in the described counterbore; Described cushion one end near described friction plate one side withstands on described support bracket fastened counterbore bottom surface, and the other end withstands on the end face of described friction plate; Described cushion one end near described armature one side withstands on described support bracket fastened counterbore bottom surface, and the other end withstands on the end face of described armature.When braking, cushion can play the buffering friction lining to the impact of brake disc, thereby reduces the effect of noise.
Further, the rubber round section joint ring is installed on the described stator case, described rubber round section joint ring is between described stator case and described armature.When armature and stator case adhesive,, enclose with " O " rubber shape first and contact with before stator case contacts at armature, slowed down the rigid shock of armature to stator case, thereby reduced the noise of the present invention when brake off.
Further, the sensing screw is installed on the described armature, described sensing screw contacts with switch of micro-switch after passing described stator case through hole, and described micro-switch is connected in series in the driving loop of brake disc.Because the sensing screw is connected with armature, and armature is connected with friction lining, so the position that the sensing screw can the perceived friction sheet is that to be in braking also be non-braking mode, and this information passed to micro-switch, micro-switch forces to disconnect the driving loop of brake disc when braking mode, thereby has avoided braking the safety misadventure that causes because of mistake.
Further, described stator case is equipped with release lever away from an end of described armature; Take the central axial direction of described coil as axial direction, be provided with the handle through hole of described axial direction in the described stator case; Described release lever is connected with described armature by the handle joint bolt that passes described handle through hole; In the described handle through hole stage clip is installed; On the described fixed support dust-proof guard is installed, described dust-proof guard covers described friction plate, described fixed support and described armature and keeps certain interval with described friction plate and described armature residual gap.Under normal circumstances, during braking, armature promotes friction lining and holds brake disc tightly under the elastic force effect of stage clip, and during brake off, the magnetic field magnetic that coil produces is made every effort to overcome the elastic force that takes stage clip makes the stator case adhesive armature.Under abnormal condition, reach such as the gap between suddenly outage or stator case and armature and to make armature can't be by the adhesive of coil magnetic field power the time, friction lining is the braking with locked wheels dish always, at this moment can pull release lever, the elastic force that overcomes stage clip with manpower makes armature near stator case, thus brake off.Dust-proof guard then can prevent the present invention in use solid foreign materials fall in the slit between fixed support and friction plate, fixed support and the armature, affect the present invention's normal operation.
Beneficial effect of the present invention is:
The present invention has in use avoided the impulsive force of brake disc that the present invention is caused damage, and has protected friction lining, has reduced noise, has improved braking effect, has prolonged the life-span of the present invention, is the important technology improvement to magnet stopper and application thereof; Its advantage is embodied in: (1) makes friction plate away from support bracket fastened reposition element by friction plate and fixed support being set and arranging between the two, when brake off, drive friction plate assembly to the purpose of the direction motion of leaving brake disc thereby reach, thereby realize the thorough disengaging of two friction linings and brake disc, prevent that the mistake friction from producing, and improved life-span of the present invention, braking effect and safety; (2) bear moving axially of " U-shaped unit " that friction plate and stator case form by designing a fixed support, make " U-shaped unit " mobile more steady reliable; By cancelling the long mounting hole of traditional electromagnetic disc type brake pedestal, reduced the Boring of slotted hole, improved production efficiency and production qualification rate, be beneficial to large scale production and cost control; (3) by the armature pilot hole at armature design and fixed pin shaft routing motion, move along fixed pin shaft when making armature in the present invention's braking and removing braking, brake disc is directly delivered on the fixed pin shaft the tangential force of friction lining, simplified the bang path of brake disc tangential force, reduce brake disc to rigid shock of the present invention, be conducive to guarantee stability and the reliability of each parts of the present invention; (4) by respectively between fixed support and friction plate and armature the design flexibility pad slow down the present invention when braking friction lining to the rigid shock of brake disc, thereby reduce brake noise; (5) by the rubber round section joint ring is installed between stator case and armature, when stator case and armature adhesive (brake off), utilize this rubber round section joint ring to slow down armature to the impact of stator case, thereby reach the purpose of the noise when reducing brake off of the present invention; (6) by sensing screw and micro-switch are installed, make micro-switch when the braking mode of abnormal condition, force to disconnect the driving loop of brake disc, thereby avoided braking the safety misadventure that causes because of mistake; (7) by release lever is installed, spur by force that armature makes it and stator case near (being equal to adhesive), brake off, prevent maloperation braking or large gap can't adhesive or fault when (as having a power failure) to using and keep in repair the inconvenience that brings; (8) by install dust-proof guard prevent the present invention in use solid foreign materials fall in the slit between fixed support and friction plate, fixed support and the armature, affect the present invention and works.
Description of drawings
Fig. 1 is left TV structure scheme drawing of the present invention;
A-A cutaway view among Fig. 2 Fig. 1;
Fig. 3 is that the plan structure scheme drawing cuts open in office of the present invention among Fig. 2;
Fig. 4 is the enlarged drawing of B among Fig. 3.
Wherein, 1-friction plate, 2-adjusting nut, 3-adjusts bolt, 4-fixed cap, the 5-disk that rubs, 6-friction plate joint bolt, 7-rack sleeve, 8-cushion, the 9-shaft sleeve of pin shaft, 10-bracket lock jack panel, 11-support joint bolt, the 12-fixed support, 13-dust-proof guard, 14-release lever, 15-armature axle sleeve, 16-fixed pin shaft, 17-lining, the 18-Elastip pin, 19-retracing spring, 20-handle grip nut, 21-handle joint bolt, 22-steel ball, 23-handle inner nut, the 24-stator case, 25-coil, 26-rubber pad, 27-armature joint bolt, 28-torsion spring, 29-rubber round section joint ring, 30-armature, 31-friction lining, 32-brake disc, the 33-round section joint ring, 34-stop screw, 35-reposition element, the 36-jam nut that resets, 37-sensing screw lock nut, 38-sensing screw, the 39-micro-switch, 40-dust-proof guard joint bolt.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described in detail:
Such as Fig. 1, Fig. 2 and shown in Figure 3, the present invention includes stator case 24, coil 25, armature 30, fixed pin shaft 16, two groups of friction plate assemblies, friction plate 1 and fixed supports 12, friction plate 1 is linked together by friction plate joint bolt 6 and lining 17 and stator case 24 and can moves at the microspur that lining 17 is made axial direction; Fixed support 12 is between friction plate 1 and armature 30, and fixed support 12 is fixedly mounted on the fixed pin shaft 16 by support joint bolt 11 and bracket lock jack panel 10, all remains with the gap between fixed support 12 and friction plate 1 and the armature 30; Be provided with between friction plate 1 and the fixed support 12 and make friction plate 1 away from the reposition element 35 of fixed support 12.
Such as Fig. 2, Fig. 3 and shown in Figure 4, be installed with stop screw 34 by the jam nut 36 that resets between friction plate 1 and the fixed support 12, it (also can be fixed support 12 that stop screw 34 passes friction plate 1, also can be friction plate 1 and fixed support 12) middle part spacing hole, reposition element 35 is positioned at described spacing hole, and stop screw 34 passes reposition element 35.The convenient like this elasticity with reposition element 35 makes friction plate 1 away from fixed support 12.As shown in Figure 3 and Figure 4, reposition element 35 is spring (also can be elastic caoutchouc or elastoplast, as long as it is just passable to have enough elasticity).
As shown in Figure 2, be provided with through hole on the friction plate 1, shaft sleeve of pin shaft 9 is installed in the described through hole, fixed pin shaft 16 passes shaft sleeve of pin shaft 9 can move axially at fixed pin shaft 16 friction plate 1; Friction plate joint bolt 6 and lining 17 pass the rack sleeve 7 of installing in the support pilot hole that is arranged on the fixed support 12.Like this, " U-shaped unit " axial restraint on fixed pin shaft 16 that friction plate 1 and stator case 12 form is finished by two supporters, a supporter is fixed pin shaft 16, another supporter is fixed support 12, and fixed support 12 is fixedly connected with fixed pin shaft 16, has guaranteed that " U-shaped unit " can move axially on fixed pin shaft 16 and fixed support 12 reposefully.
As shown in Figure 2, be provided with several armature pilot holes on the armature 30, in the described armature pilot hole armature axle sleeve 15 be installed, armature 30 is installed on the fixed pin shaft 16 by armature axle sleeve 15 and can moves axially at fixed pin shaft 16.Because armature 30 can be mobile at fixed pin shaft 16, so when braking, the friction lining 31 of armature 30 1 sides is subject to the tangential force of brake disc 32, directly being delivered to fixed pin shaft 16 through armature 30 gets on, do not pass through stator case 24 and friction plate joint bolt 6, so obviously simplified the route that tangential force transmits, thereby alleviated braking tangential force to impact damage of the present invention.
As shown in Figure 2, described two groups of friction plate assemblies comprise armature friction plate assembly and friction plate friction plate assembly; In the described armature friction plate assembly, friction lining 31 directly is bonded on armature 30 end faces; In the described friction plate friction plate assembly, friction disk 5 is bonded on the fixed cap 4, is set with round section joint ring 33 on the fixed cap 4, and fixed cap 4 is connected with adjusting nut and is connected with friction plate 1 by adjusting bolt 3.The friction disk 5 of friction plate 1 one sides and the gap between the brake disc 32 when adjustment bolt 3 and adjusting nut 2 can be regulated brake off.
As shown in Figure 2, the both sides of fixed support 12 are respectively arranged with several counterbores, are provided with cushion 8 in the described counterbore; One end of the cushion 8 of close friction plate 1 one sides withstands on the counterbore bottom surface of fixed support 12, and the other end withstands on the end face of friction plate 1; One end of the cushion 8 of close armature 30 1 sides withstands on the counterbore bottom surface of fixed support 12, and the other end withstands on the end face of armature 30.When braking, cushion 8 can play the impact of buffering friction lining 31 and 5 pairs of brake discs 32 of friction disk, thereby reduces noise.
As shown in Figure 2, rubber round section joint ring 29 is installed on the stator case 24, rubber round section joint ring 29 is between stator case 24 and armature 30.Armature 30 is during with stator case 24 adhesive,, contacts with rubber round section joint ring 29 first with before stator case 24 contacts at armature 30, slowed down the rigid shock of 30 pairs of stator cases 24 of armature, thereby reduced the noise of the present invention when brake off.
As shown in Figure 3, by sensing screw lock nut 37 sensing screw 38 is installed on the armature 30, sensing screw 38 contacts with switch of micro-switch 39 after passing the through hole of stator case 24, and micro-switch 39 is connected in series in the driving loop (not shown) of brake disc 32.Because sensing screw 38 is connected with armature 30, and armature 30 is connected with friction lining 31, so the position that sensing screw 38 can perceived friction sheet 31 is that to be in braking also be non-braking mode, and this information passed to micro-switch 39, micro-switch 39 forces to disconnect the driving loop of brake disc 32 when braking mode, thereby has avoided braking the safety misadventure that causes because of mistake.
As shown in Figure 2, stator case 24 is equipped with release lever 14 away from an end of armature 30, take the central axial direction of coil 25 as axial direction, be provided with the handle through hole of described axial direction in the stator case 24, release lever 14 is connected with armature 30 by the handle joint bolt 21 that passes described handle through hole, on the handle joint bolt 21 in the described handle through hole handle inner nut 23 is installed, between handle inner nut 23 in the described handle through hole and the hole wall of described handle through hole stage clip 19 is installed, in the bottom surface counterbore of stator case 24 steel ball 22 is installed, the end face that steel ball 22 is released handle 15 surrounds, and locked with handle outer nut 20.Under normal circumstances, during braking, armature 30 promotes friction lining 31 and holds brake disc tightly under the elastic force effect of stage clip 19, and during brake off, the magnetic field magnetic that coil 25 produces is made every effort to overcome the elastic force that takes stage clip 19 makes stator case 24 adhesive armatures 30; Under abnormal condition, make armature 30 can't be by the magnetic field force adhesive of coil 25 time as reaching in the unexpected gap between outage or stator case 24 and the armature 30, friction lining 31 is the braking with locked wheels dish always, at this moment can pull release lever 14, the elastic force that overcomes stage clip 19 with manpower makes armature 30 near stator case 24, thus brake off.
As shown in Figures 2 and 3, by dust-proof guard joint bolt 40 dust-proof guard 13 is installed on the fixed support 12, dust-proof guard 13 covers friction plate 1, fixed support 12 and armature 30 and and friction plate 1 and 30 maintenances of armature certain interval.Dust-proof guard 13 can prevent the present invention in use solid foreign materials fall in the slit between fixed support 12 and friction plate 1, fixed support 12 and the armature 30, affect the present invention's normal operation.
As shown in Figure 2, armature 30 connects with stator case 24 by Elastip pin 18 and armature joint bolt 27 simultaneously, and armature 30 can move axially along Elastip pin 18.Armature joint bolt 27 1 ends are installed on the armature 30, and the other end is installed on the stator case 24 and passes torsion spring 28, and the head of armature joint bolt 27 has rubber pad 26 (round section joint ring).
In the said structure, the effect of the pedestal in friction plate 1 and the traditional electrical magnetic brake is the same, but himself structure and all different from the connection structure of stator case 24.
Below in conjunction with Fig. 1-Fig. 3 principle of work of the present invention and process are specified:
In coil 25 energising situations, coil 25 generates an electromagnetic field, magnetic line of force passes stator case 24 and armature 30 and air gap between the two, magnetic field force overcomes the thrust of 28 pairs of armature 30 of torsion spring, attract armature 30 with movable friction plate 31 break away from brake discs 32 along fixed pin shaft 16 to stator case 24 direction move.In this process, when the remaining positive pressure of 31 pairs of brake discs of friction lining 32 when this moment, reposition element 35 was to the positive pressure of " U-shaped unit ", be that the opposition of 32 pairs of friction linings 31 of brake disc is when this moment, reposition element 35 was to the positive pressure of " U-shaped unit ", reposition element 35 promote " U-shaped unit " together along lining 17 to friction plate 1 direction move and (move axially in the rack sleeve 7 of lining 17 in the pilot hole of fixed support 12, driving whole " U-shaped unit " moves axially), friction disk 5 is followed " U-shaped unit " to the direction motion that breaks away from brake disc 32, namely rub disk 5 and friction lining 31 moves in the opposite direction, throws off together brake disc 32.When friction plate 1 moves to the head end of caging bolt 34 and friction plate 1 end contact (movement travel be nominal clearance 1/2 the time), friction plate 1 and friction disk 5 no longer move, and friction lining 31 continuation this moment are to the direction motion of stator case 24, until the end contact of armature 30 and stator case 24, be friction lining 31 and friction disk 5 all and all have certain interval between the brake disc 32, thereby brake off, brake disc 32 rotates, and the machinery (such as winch) that namely is connected with brake disc 32 begins to rotate.In this process, rubber round section joint ring 29 can slow down the rigid shock of 30 pairs of stator cases 24 of armature, thus the noise in the time of effectively reducing brake off of the present invention.
Claims (10)
1. the electromagnetic disc type brake with chafing gear comprises stator case, coil, armature, fixed pin shaft, two groups of friction plate assemblies; It is characterized in that: also comprise friction plate and fixed support, described friction plate is linked together by friction plate joint bolt and lining and described stator case and can moves at the microspur that described lining is made axial direction; Described fixed support is between described friction plate and described armature, and described fixed support is fixedly mounted on the fixed pin shaft, all remains with the gap between described fixed support and described friction plate and the described armature; Be provided with between described friction plate and the described fixed support and make described friction plate away from described support bracket fastened reposition element.
2. the electromagnetic disc type brake with chafing gear according to claim 1, it is characterized in that: be installed with stop screw by the jam nut that resets between described friction plate and the described fixed support, described stop screw passes the spacing hole at described friction plate and/or described fixed support middle part, described reposition element is positioned at described spacing hole, and described stop screw passes described reposition element.
3. the electromagnetic disc type brake with chafing gear according to claim 1 and 2, it is characterized in that: described reposition element is spring or elastic caoutchouc or elastoplast.
4. the electromagnetic disc type brake with chafing gear according to claim 1, it is characterized in that: be provided with through hole on the described friction plate, in the described through hole shaft sleeve of pin shaft is installed, described fixed pin shaft passes described shaft sleeve of pin shaft can move axially at described fixed pin shaft described friction plate; Described friction plate joint bolt and lining pass the rack sleeve of installing in the support pilot hole that is arranged on the described fixed support.
5. the electromagnetic disc type brake with chafing gear according to claim 1, it is characterized in that: be provided with several armature pilot holes on the described armature, in the described armature pilot hole armature axle sleeve is installed, described armature is installed on the described fixed pin shaft by described armature axle sleeve and can moves axially at described fixed pin shaft.
6. the electromagnetic disc type brake with chafing gear according to claim 1, it is characterized in that: described two groups of friction plate assemblies comprise armature friction plate assembly and friction plate friction plate assembly; In the described armature friction plate assembly, friction lining directly is bonded on the described armature end face; In the described friction plate friction plate assembly, the friction disk is bonded on the fixed cap, is set with round section joint ring on the described fixed cap, and described fixed cap is connected with described friction plate with adjusting nut by adjusting bolt.
7. the electromagnetic disc type brake with chafing gear according to claim 1, it is characterized in that: described support bracket fastened both sides are respectively arranged with several counterbores, are provided with cushion in the described counterbore; Described cushion one end near described friction plate one side withstands on described support bracket fastened counterbore bottom surface, and the other end withstands on the end face of described friction plate; Described cushion one end near described armature one side withstands on described support bracket fastened counterbore bottom surface, and the other end withstands on the end face of described armature.
8. the electromagnetic disc type brake with chafing gear according to claim 1, it is characterized in that: the rubber round section joint ring is installed on the described stator case, and described rubber round section joint ring is between described stator case and described armature.
9. the electromagnetic disc type brake with chafing gear according to claim 1, it is characterized in that: the sensing screw is installed on the described armature, described sensing screw contacts with switch of micro-switch after passing described stator case through hole, and described micro-switch is connected in series in the driving loop of brake disc.
10. the electromagnetic disc type brake with chafing gear according to claim 1, it is characterized in that: described stator case is equipped with release lever away from an end of described armature; Take the central axial direction of described coil as axial direction, be provided with the handle through hole of described axial direction in the described stator case; Described release lever is connected with described armature by the handle joint bolt that passes described handle through hole; In the described handle through hole stage clip is installed; On the described fixed support dust-proof guard is installed, described dust-proof guard covers described friction plate, described fixed support and described armature and keeps certain interval with described friction plate and described armature residual gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110228459 CN102311065B (en) | 2011-08-10 | 2011-08-10 | Electromagnetic disc brake with antifriction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110228459 CN102311065B (en) | 2011-08-10 | 2011-08-10 | Electromagnetic disc brake with antifriction device |
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| Publication Number | Publication Date |
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| CN102311065A CN102311065A (en) | 2012-01-11 |
| CN102311065B true CN102311065B (en) | 2013-01-23 |
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| CN 201110228459 Active CN102311065B (en) | 2011-08-10 | 2011-08-10 | Electromagnetic disc brake with antifriction device |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104291235B (en) * | 2014-11-04 | 2017-04-26 | 北京索德电气工业有限公司 | Magnet brake used for lifting equipment |
| DE102016100693A1 (en) | 2015-12-09 | 2017-06-14 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Brake pad for a disc brake |
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|---|---|
| CN102311065A (en) | 2012-01-11 |
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