CN205773042U

CN205773042U - Electromagnetic brake

Info

Publication number: CN205773042U
Application number: CN201620704141.6U
Authority: CN
Inventors: 杨靖
Original assignee: Hitachi Elevator Guangzhou Escalator Co Ltd
Current assignee: Hitachi Elevator Guangzhou Escalator Co Ltd
Priority date: 2016-07-04
Filing date: 2016-07-04
Publication date: 2016-12-07
Anticipated expiration: 2026-07-04

Abstract

The utility model discloses a kind of electromagnetic brake, including static iron core and with described static iron core one_to_one corresponding the dynamic iron core that interacted by electromagnetic force, described static iron core is arranged with holding tank towards the side of described dynamic iron core, being equipped with bolster in described holding tank, the thickness of described bolster is more than the degree of depth of described holding tank.Bolster part described in the utility model stretches out holding tank, and when dynamic iron core is moved by electromagnetic force, dynamic iron core first contacts with bolster, buffered after contact with static iron core again, reduce the contact force between dynamic iron core and static iron core, impact noise reduction.This utility model can arrange the degree of depth of holding tank according to actual needs, thus can place the bolster of respective thickness, it is achieved effect of effective damping and silencing；Can ensure under power-off release conditions, dynamic magnetic gap between iron core and static iron core is less simultaneously, and when not interfering with follow-up energising, the magnetic force of dynamic iron core is attracted by static iron core, it is ensured that brake normal operation.

Description

Electromagnetic brake

Technical field

This utility model relates to traction system brake technical field, especially relates to a kind of electromagnetic brake.

Background technology

Electromagnetic brake is the important component part in elevator or staircase traction system, and it mainly includes two coil groups Part and coil block static iron core one to one and static iron core move iron core and with dynamic iron core one to one one to one Push rod.Its operation principle is as follows: when the coil is energized, is formed with electromagnetic circuit between static iron core and dynamic iron core, and static iron core is inhaled Priming iron core is drawn close to it, and dynamic iron core drives push rod thereon to move laterally, and band movable friction plate leaves braked wheel so that braking Taking turns freely rotatable, elevator is run.When elevator traction machine power-off, between static iron core and dynamic iron core, lose electromagnetic attraction, Under the pressure effect of tripping spring, dynamic iron core is pushed into reset, so that friction plate obvolvent traction machine braked wheel, makes the traction machine can not Rotate.

Owing to when energising, dynamic iron core is drawn to static iron core consumingly, moves and produces bigger rushing between iron core and static iron core Hit, affect brake safe operation, also produce bigger noise simultaneously.In existing brake, it will usually at dynamic iron core with quiet Arranging a buffering spacer between iron core, owing to being limited by moving magnetic gap between iron core and static iron core, this spacer thickness is limited, The effect making its damping and silencing is unsatisfactory.

Utility model content

Based on this, this utility model is to overcome the defect of prior art, it is provided that a kind of electromagnetic brake, and it is quiet in guarantee Can effectively reduce impact noise while magnetic gap is less between iron core and dynamic iron core, reach effect of damping and silencing.

Its technical scheme is as follows:

A kind of electromagnetic brake, including static iron core and with described static iron core one_to_one corresponding being interacted by electromagnetic force Dynamic iron core, described static iron core is arranged with holding tank towards the side of described dynamic iron core, is equipped with bolster, institute in described holding tank State the thickness degree of depth more than described holding tank of bolster.

Wherein in an embodiment, also include that push rod, described static iron core are provided with what the periphery with described push rod matched First through hole, described push rod one end is fixed on described static iron core, and the other end stretches out from described first through hole, described receiving grooved ring Arrange around described first through hole.

Wherein in an embodiment, described static iron core is provided with the convex shoulder on the edge being positioned at described holding tank, described dynamic Iron core is arranged with the groove coordinated with described shoulder form, and the distance between described convex shoulder and described dynamic iron core is less than described buffering The thickness of part.

Wherein in an embodiment, the distance between the bottom of described convex shoulder and described groove more than described dynamic iron core with Distance between described bolster.

Wherein in an embodiment, described static iron core is arranged with around described first logical away from one end of described dynamic iron core The stepped hole that hole is arranged, described stepped hole includes first order hole and hole, the second level, described first through hole, described first order hole and institute The diameter stating hole, the second level increases successively, is equipped with the first sealing ring arranged around described push rod, institute in described first order hole Being equipped with the cover plate of fixing described first sealing ring in stating hole, the second level, described push rod passes described cover plate.

Wherein in an embodiment, also include barrel-type casing, brake-loosing mechanism and with described static iron core line one to one Coil assembly, the number of described static iron core is two, and two described static iron cores are respectively arranged on the two ends of described barrel-type casing, two institutes State coil block to be located in described barrel-type casing and be arranged side by side along the axis of described barrel-type casing, two described coil blocks Between be provided with a separation bearing, described dynamic iron core sleeve is located in corresponding described coil block, is deposited between two dynamic iron cores In space, described brake-loosing mechanism includes declutching bar and the rocking bar of bar rotation of declutching described in drive, and described barrel-type casing is provided with second Through hole, described separation props up bearing and is provided with third through-hole, described in the bar that declutches sequentially pass through described second away from one end of described rocking bar Through hole and described third through-hole also enter in described space, described in the bar that declutches be flat.

Wherein in an embodiment, described in declutch between bar and described barrel-type casing and/or described in declutch bar with described Separate and be provided with the second sealing ring between a bearing.

Wherein in an embodiment, described brake-loosing mechanism also includes ball, described in the declutch periphery of bar be arranged with and institute Stating the cannelure of ball form fit, a described ball part is located at described separation and is propped up in bearing, and another part is located at described ring In shape groove.

Wherein in an embodiment, described separation is propped up bearing and is provided with the fourth hole connected with described third through-hole, institute State fourth hole to be equipped with along its securing member being axially sequentially arranged, spring and described ball, described securing member and described separation Propping up bearing threaded, described spring one end offsets with described securing member, and the other end offsets with described ball.

Wherein in an embodiment, described dynamic iron core is towards the tapered shape in one end of described static iron core, described static iron core It is provided with the cone tank that the end shape with described dynamic iron core coordinates.

Advantage or principle to preceding solution illustrate below:

In in this utility model, bolster is positioned over the holding tank (deep gouge) of static iron core, the thickness of bolster is slightly larger than accommodating The degree of depth of groove, i.e. bolster part stretches out holding tank.When dynamic iron core is moved by electromagnetic force, first contact with bolster, buffered After contact with static iron core again, reduce the contact force between dynamic iron core and static iron core, impact noise reduces.This utility model can root According to being actually needed the degree of depth arranging holding tank, thus the bolster of respective thickness can be placed so that bolster can reach certain Thickness, possess certain elasticity, thus realize effect of effective damping and silencing；Simultaneously because the bolster overwhelming majority is placed In holding tank, under brake power-off release conditions, dynamic magnetic gap between iron core and static iron core is less, does not interferes with follow-up During energising, the magnetic force of dynamic iron core is attracted by static iron core, it is ensured that brake normal operation.

Described holding tank is arranged around described first through hole, and bolster is filled in the holding tank of this annular so that quiet ferrum Buffer Jun Heng between core with dynamic iron core.

Being additionally provided with convex shoulder on described static iron core, convex shoulder is used for preventing bolster landing in holding tank, releases in power-off meanwhile Putting under state, the distance between described convex shoulder and described dynamic iron core is less than the thickness of described bolster, in order to prevent bolster sliding Drop down onto in the magnetic gap between dynamic iron core and static iron core, hinder dynamic iron core to move to static iron core, cause dynamic iron core to move not in place, And then affect brake and normally work.

Under power-off release conditions, the distance between the bottom of described convex shoulder and described groove is more than described dynamic iron core and institute Stating the distance between bolster, in order to avoid when energising, dynamic iron core contact with bolster, convex shoulder contacts with the bottom of groove, In order to reduce impact noise further.

The outside of static iron core is provided with stepped hole, and for installing the first sealing ring and cover plate, the first sealing ring sets tightly around push rod Put, be conducive to strengthening the sealing between push rod and static iron core, reach waterproof effect.

Described brake-loosing mechanism includes the bar that declutches, and the bar that declutches is between two dynamic iron cores, and the bar that declutches is flat, When brake is properly functioning, the narrower one side of the bar that declutches is horizontally placed between two dynamic iron cores, when in rescue or maintenance elevator, and can Rotating rocker, and then drive the bar that declutches to rotate so that the wider one side of the bar that declutches is horizontally placed between two dynamic iron cores, and declutch bar The dynamic iron core of both sides is backed down by flat end, and dynamic iron core moves to static iron core direction, the push rod band movable friction plate on dynamic iron core from Open the surface of braked wheel, in order to dish moves elevator traction machine main shaft and car is moved to desired location.

Described declutch bar and described housing and/or described in declutch bar and described separation is propped up and is provided with the second sealing between bearing Circle, prevents water from entering from the gap declutching between bar and housing.

Described brake-loosing mechanism also includes ball, and a ball part embeds in the cannelure of the bar that declutches, and another part is embedded at Separate in bearing, for the bar that declutches being played when the bar that declutches rotates spacing, the effect of anticreep, simultaneously ball can reduce with Declutch the frictional force between bar.

Described separation is propped up bearing and is provided with fourth hole, is sequentially loaded into above-mentioned ball, spring and fastening in fourth hole Part, by regulating the screwing length of securing member, and combines the cushioning effect of spring, and then reaches to finely tune the effect of ball so that Ball is in the state embedding the bar that declutches all the time.

Dynamic employing cone match design between iron core and static iron core, motion helical pitch is preferable, and dynamic iron core connects with static iron core end face Contacting surface is long-pending relatively big, and the face pressure of contact impact is little, and impact noise is little.

Accompanying drawing explanation

Fig. 1 is the structural representation of the electromagnetic brake described in this utility model embodiment；

Fig. 2 is that the A-A of Fig. 1 is to sectional view；

Fig. 3 is the assembling schematic diagram between the static iron core described in this utility model embodiment and push rod；

Fig. 4 is partial enlarged drawing at the B of Fig. 2.

Description of reference numerals:

100, barrel-type casing, the 110, second through hole, 200, coil block, 300, static iron core, the 310, first through hole, 320, cone Shape groove, 330, holding tank, 340, convex shoulder, 341, end face, 350, stepped hole, 400, dynamic iron core, 410, groove, 420, outer face, 500, bearing is separated, 510, third through-hole, 520, fourth hole, 600, push rod, 710, declutch bar, 711, cannelure, 720, Rocking bar installation portion, the 730, second sealing ring, 740, ball, 750, spring, 760, securing member, 810, bolster, 820, first is close Seal, 830, cover plate, 840, composite bearing, 850, composite bearing, 900, rosette.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and specifically real Execute mode, this utility model is described in further detail.It should be appreciated that detailed description of the invention described herein Only in order to explain this utility model, do not limit protection domain of the present utility model.

As depicted in figs. 1 and 2, a kind of electromagnetic brake, including barrel-type casing 100,900, two static iron cores of rosette 300 and static iron core 300 coil block 200 one to one and static iron core 300 move one to one iron core 400 and with dynamic ferrum Core 400 push rod 600 one to one.Two described static iron cores 300 are respectively arranged on described barrel-type casing 100 two ends, described in two Coil block 200 is located at interior and along barrel-type casing 100 the axis of described barrel-type casing 100 and is arranged side by side, two described coils Being additionally provided with separation bearing 500 between assembly 200, described dynamic iron core 400 is sheathed on corresponding described coil block 200 In.As it is shown on figure 3, described static iron core 300 is provided with the first through hole 310 that the periphery with described push rod 600 matches, described push rod Described static iron core 300 is fixed in 600 one end, and the other end stretches out from described first through hole 310.

Described static iron core 300 is arranged with holding tank 330, described holding tank 330 content towards the side of described dynamic iron core 400 It is equipped with bolster 810.The thickness of described bolster 810 is more than the degree of depth of described holding tank 330, i.e. bolster 810 part is stretched out Holding tank 330.When dynamic iron core 400 is moved by electromagnetic force, first contact with bolster 810, buffered after connect with static iron core 300 again Touching, reduce the contact force between dynamic iron core 400 and static iron core 300, impact noise reduces.This utility model can be according to actual need The degree of depth of holding tank 330 to be arranged, thus the bolster 810 of respective thickness can be placed so that bolster 810 can reach certain Thickness, possess certain elasticity, thus realize effect of effective damping and silencing；Simultaneously because bolster 810 is most Being positioned in holding tank 330, under brake power-off release conditions, dynamic magnetic gap between iron core 400 and static iron core 300 is relatively Little, when not interfering with follow-up energising, the magnetic force of dynamic iron core 400 is attracted by static iron core 300, it is ensured that brake normal operation.

Preferably, described holding tank 330 is arranged around described first through hole 310, and bolster 810 is filled in the appearance of this annular Receive in groove 330 so that buffer Jun Heng between static iron core 300 with dynamic iron core 400.As shown in Figures 2 and 3, described static iron core 300 is also Being provided with the convex shoulder 340 on the edge being positioned at described holding tank 330, this convex shoulder 340 is also the convex shoulder 340 of annular, described dynamic iron core 400 are arranged with and the groove 410 of described convex shoulder 340 form fit, and convex shoulder 340 is used for preventing bolster 810 in holding tank 330 Landing.Meanwhile, under power-off release conditions (i.e. state shown in Fig. 2), end face 341 and the described dynamic iron core 400 of described convex shoulder 340 Outer face 420 between distance less than the thickness of described bolster 810, in order to prevent bolster 810 landing to dynamic iron core 400 And in the magnetic gap between static iron core 300, hinder dynamic iron core 400 to move to static iron core 300, cause dynamic iron core 400 move less than Position, and then affect brake and normally work.

Under power-off release conditions, the distance between end face 341 and the bottom of described groove 410 of described convex shoulder 340 is big Distance between outer face 420 and the described bolster 810 of described dynamic iron core 400, in order to avoid at energising, dynamic iron core 400 When contacting with bolster 810, convex shoulder 340 contacts with the bottom of groove 410, in order to reduce impact noise further.

Owing to traditional bolster 810 is insulating paper, rubber or resinae pad, this type of pad life-span is shorter, this practicality Described in new design, bolster 810 is steel wire winding part, is conducive to extending the service life of bolster 810.

As it is shown on figure 3, described static iron core 300 is arranged with around described first through hole away from one end of described dynamic iron core 400 310 stepped holes 350 arranged, described stepped hole 350 includes first order hole and hole, the second level, described first through hole 310, described the The diameter in one-level hole and hole, the described second level increases successively, is equipped with around the setting of described push rod 600 in described first order hole First sealing ring 820 (backbone sealing ring), is equipped with the cover plate 830 of fixing described first sealing ring 820 in hole, the described second level, Described push rod 600 is through described cover plate 830, and described cover plate 830 is fixed on static iron core by the securing member such as screw or bolt 760 On 300.First sealing ring 820 is arranged tightly around push rod 600, is conducive to strengthening the sealing between push rod 600 and static iron core 300, Reach waterproof effect.Compare to conventionally employed Corrugated Sleeve and be sheathed on the external part of push rod 600 for waterproof mode, this practicality Novel better tightness, waterproof reliability is higher.

As shown in Figure 2 and Figure 4, this utility model also includes that brake-loosing mechanism, described brake-loosing mechanism include declutch bar 710 and band The rocking bar (not shown, in figure, 720 are illustrated as the rocking bar installation portion for installing rocking bar) that the bar 710 that declutches described in Dong rotates, institute Stating barrel-type casing 100 and be provided with the second through hole 110 coordinated with the described peripheral shape declutching bar 710, bearing 500 is propped up in described separation Be provided with the third through-hole 510 coordinated with the described peripheral shape declutching bar 710, described in declutch bar 710 away from the one of described rocking bar Hold through described second through hole 110 and described third through-hole 510 and enter in the space two described dynamic iron cores 400, institute State the bar 710 that declutches in flat.When brake is properly functioning, the narrower one side of the bar 710 that declutches is horizontally placed on two dynamic iron cores 400 Between, when in rescue or maintenance elevator, rotatable rocking bar, and then drive the bar 710 that declutches to rotate so that the bar 710 that declutches is wider One side be horizontally placed between two dynamic iron cores 400, the dynamic iron core 400 of both sides is backed down by the flat end of the bar 710 that declutches, dynamic iron core 400 move to static iron core 300 direction, and the push rod 600 band movable friction plate on dynamic iron core 400 leaves the surface of braked wheel, in order to dish Car is moved to desired location by dynamic elevator traction machine main shaft.

Described declutch between bar 710 and described barrel-type casing 100 and/or described in the bar 710 that declutches prop up bearing with described separation It is provided with the second sealing ring 730 between 500, prevents water from entering from the gap declutched between bar 710 and housing.

Described brake-loosing mechanism also includes ball 740, preferably steel ball, described in the declutch periphery of bar 710 be arranged with described The cannelure 711 of ball 740 form fit, described ball 740 part is located at described separation and props up in bearing 500, another part It is located in described cannelure 711, for the bar 710 that declutches being played spacing, the effect of anticreep when the bar 710 that declutches rotates, simultaneously Ball 740 can reduce and declutch the frictional force between bar 710.

Specifically, described separation is propped up bearing 500 and is provided with the fourth hole 520 connected with described third through-hole 510, and described Four through holes 520 are equipped with securing member 760 (screw, bolt etc.), spring 750 and the described ball 740 being axially sequentially arranged along it, Described securing member 760 props up bearing 500 with described separation threadeds, and described spring 750 one end offsets with described securing member 760, The other end offsets with described ball 740.By regulating the screwing length of securing member 760, and combine the cushioning effect of spring 750, And then reaching to finely tune the effect of ball 740 so that ball 740 is in the state embedding the bar 710 that declutches all the time.

Further, composite bearing 840, described dynamic iron core 400 it are provided with between described push rod 600 and described static iron core 300 And described separation is propped up and is provided with composite bearing 850 between bearing 500, and composite bearing 840 and composite bearing 850 all play helical pitch and move ferrum The effect of core 400.

In the present embodiment, described dynamic iron core 400 is towards the tapered shape in one end of described static iron core 300, described static iron core 300 are provided with the cone tank 320 that the end shape with described dynamic iron core 400 coordinates, dynamic employing between iron core 400 and static iron core 300 Cone match designs, and motion helical pitch is preferable, and dynamic iron core 400 and static iron core 300 end contact area are relatively big, the face pressure of contact impact Little, impact noise is little.Described holding tank 330 and described first through hole 310 are all located in described cone tank 320.

Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited In contradiction, all it is considered to be the scope that this specification is recorded.

Embodiment described above only have expressed several embodiments of the present utility model, and it describes more concrete and detailed, But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, for the common skill of this area For art personnel, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into Protection domain of the present utility model.

Claims

1. an electromagnetic brake, it is characterised in that include static iron core and with described static iron core one_to_one corresponding pass through electromagnetic force The dynamic iron core interacted, described static iron core is arranged with holding tank towards the side of described dynamic iron core, accommodating in described holding tank Having bolster, the thickness of described bolster is more than the degree of depth of described holding tank.

Electromagnetic brake the most according to claim 1, it is characterised in that also include that push rod, described static iron core are provided with and institute Stating the first through hole that the periphery of push rod matches, described static iron core is fixed in described push rod one end, and the other end leads to from described first Stretching out in hole, described holding tank is arranged around described first through hole.

Electromagnetic brake the most according to claim 1 and 2, it is characterised in that described static iron core is provided with and is positioned at described receiving Convex shoulder on the edge of groove, described dynamic iron core is arranged with the groove coordinated with described shoulder form, described convex shoulder and described dynamic ferrum Distance between core is less than the thickness of described bolster.

Electromagnetic brake the most according to claim 3, it is characterised in that between the bottom of described convex shoulder and described groove Distance is more than the distance between described dynamic iron core and described bolster.

Electromagnetic brake the most according to claim 2, it is characterised in that described static iron core is away from one end of described dynamic iron core Being arranged with the stepped hole arranged around described first through hole, described stepped hole includes first order hole and hole, the second level, described first The diameter in through hole, described first order hole and hole, the described second level increases successively, is equipped with around described top in described first order hole The first sealing ring that bar is arranged, is equipped with the cover plate of fixing described first sealing ring in hole, the described second level, described push rod passes Described cover plate.

Electromagnetic brake the most according to claim 1 and 2, it is characterised in that also include barrel-type casing, brake-loosing mechanism and with Described static iron core coil block one to one, the number of described static iron core is two, and two described static iron cores are respectively arranged on institute State the two ends of barrel-type casing, in two described coil blocks are located at described barrel-type casing and along described barrel-type casing axis also Row is arranged, and is provided with separation bearing between two described coil blocks, and described dynamic iron core sleeve is located at corresponding described coil In assembly, there is space between two dynamic iron cores, described brake-loosing mechanism includes declutching bar and shaking that the bar that declutches described in drive rotates Bar, described barrel-type casing is provided with the second through hole, and described separation is propped up bearing and is provided with third through-hole, described in declutch bar away from described rocking bar One end sequentially pass through described second through hole and described third through-hole and enter in described space, described in the bar that declutches be flat.

Electromagnetic brake the most according to claim 6, it is characterised in that described in declutch between bar and described barrel-type casing Declutch bar described in and/or and described separation is propped up and is provided with the second sealing ring between bearing.

Electromagnetic brake the most according to claim 6, it is characterised in that described brake-loosing mechanism also includes ball, described pine The periphery of restrictor bar is arranged with and the cannelure of described ball form fit, and a described ball part is located at described separation and is propped up bearing In, another part is located in described cannelure.

Electromagnetic brake the most according to claim 8, it is characterised in that described separation is propped up bearing and is provided with and described threeway The fourth hole of hole connection, described fourth hole is equipped with along its securing member being axially sequentially arranged, spring and described ball, institute Stating securing member to prop up bearing with described separation and threaded, described spring one end offsets with described securing member, the other end and described rolling Pearl offsets.

Electromagnetic brake the most according to claim 1 and 2, it is characterised in that described dynamic iron core is towards described static iron core The tapered shape in one end, described static iron core is provided with the cone tank that the end shape with described dynamic iron core coordinates.