CN208561541U - A kind of brake - Google Patents

Abstract

The utility model relates to braking equipment fields, disclose a kind of brake, including magnetic yoke, armature and frictional disk, several springs are provided between the armature and magnetic yoke, the coil for adsorbing armature is provided in the magnetic yoke, the magnetic yoke and armature are respectively provided with there are two and are arranged in a one-to-one correspondence, and coil slot are offered in each magnetic yoke, there are two the coils and is respectively arranged in each coil slot.The utility model is worked independently using two groups of magnetic yokes and armature, do not interfere with each other, when one group of armature fails due to the dust or the reasons such as spring aging between friction plate and armature, another group of armature can normal movement brake is worked normally, structure is simple, and using effect is good.

Description

A kind of brake

Technical field

The utility model relates to a kind of brakes.Belong to braking equipment field.

Background technique

Traction machine is the power-equipment of elevator, also known as elevator host.Function is to convey to run elevator with transmitting power.By The composition such as motor, brake, shaft coupling, reduction gearbox, traction sheave, rack and directive wheel and attached handwheel.Directive wheel one As on the spandrel girder under rack or rack.

And the brake on traction machine is commonly available to the device for locking traction sheave, brake is typically all and motor electricity Connection, when motor stops being powered, the spring in brake magnetic yoke drives armature, will be on traction machine using friction member Rotor is checked, and when electrical power work, the electromagnetic coil in brake magnetic yoke is also powered, and electromagnetic coil attracts rank Iron makes the friction member on armature be detached from rotor, mobile toward brake magnetic yoke direction.

Existing brake includes the magnetic yoke set gradually, armature, friction plate, and spline, flower are equipped at the shaft of friction plate It is combined with the spline housing connecting for the shaft with load, magnetic yoke and armature on key, connection is slid by guide post, is opened in magnetic yoke Equipped with coil slot, coil is installed in coil slot, spring is provided between magnetic yoke and armature, when the coil is energized, coil generates Magnetic field suction armature is close to magnetic yoke, and when the coil is de-energized, spring elongation is to push armature far from magnetic yoke, and armature is far from magnetic yoke When, armature pushes against the rotation for the axis that friction plate makes friction plate hinder load.

In use, due to only existing one group of magnetic yoke, armature, friction plate and coil, when brake spring aging, friction plate When occurring the failures such as obstruction between load, the braking effect of brake almost disappears, extremely dangerous, for safety, It is necessary to which two groups of independent magnetic yokes, armature and coil is arranged to reduce the probability that brake fails in above-mentioned reason, formed Dual fail-safe reduces the generation of brake safety accident.

Utility model content

In view of the deficienciess of the prior art, being equipped with two groups of magnetic the purpose of this utility model is to provide a kind of brake Yoke, armature work independently between two groups, and in one group of failure, another group remains to work normally, and reduces brake global failure Power, so that safety when ensure that use, reduces the generation of safety accident.

The above-mentioned technical purpose of the utility model has the technical scheme that a kind of brake, including Magnetic yoke, armature and frictional disk are provided with several springs, are provided in the magnetic yoke for adsorbing between the armature and magnetic yoke The coil of armature, the magnetic yoke and armature are respectively provided with there are two and are arranged in a one-to-one correspondence, and offer in each magnetic yoke Coil slot, there are two the coils and is respectively arranged in each coil slot.

By using above-mentioned technical proposal, worked independently, do not interfere with each other using two groups of magnetic yokes and armature, when one group of armature because The reasons such as dust or spring aging between friction plate and armature and can not push against, when leading to this group of brake fade, another group In armature appoint and can so push against friction plate under the action of the spring so that brake generates braking effect, structure is simple, when use It is safer with dual fail-safe.

Be further arranged to: brake further includes warning device, and the warning device includes microswitch, alarm controller And trigger member, the trigger member are set on armature for triggering microswitch, the alarm control when armature contacts magnetic yoke Device processed connect to give alarm controller signal in microswitch triggering with microswitch.

By using above-mentioned technical proposal, when armature is attracted by coil, the trigger member on armature close to microswitch simultaneously The final microswitch that touches makes microswitch generate electric signal and the electric signal is passed to alarm controller, alarm controller It judges whether to alarm according to the electric signal of the power on/off situation of coil and microswitch；Energized state is in when coil and When microswitch is not triggered, illustrate that hindering occurs in armature movement or coil is disconnected, alarm controller is alarmed at this time, is mentioned Show failure, when the coil is de-energized, if microswitch is in triggering state, illustrates that armature is not pushed against with friction plate, braking Device is in failure state, and alarm controller is alarmed at this time, prompts to break down.

Be further arranged to: the trigger member includes the conflict bar being set on armature, when armature is inhaled in the magnetic field of coil When drawing the movement of lower close magnetic yoke, the contact of the conflict bar and microswitch is inconsistent.

By using above-mentioned technical proposal, inconsistent using the contact for contradicting bar and microswitch, structure is simple, contradicts effect Fruit is good.

It is further arranged to: being provided with amplifying device between the microswitch and trigger member, the amplifying device includes Driving lever, the first contact block and the second contact block, in magnetic yoke, second contact block is set to the driving lever for the driving lever rotational installation Above and for contradicting with the contact of microswitch, first contact block is set on the driving lever and for contradicting with trigger member, First contact block to driving lever at magnetic yoke rotational installation at a distance from less than at the second contact block to driving lever and magnetic yoke rotational installation Distance.

By using above-mentioned technical proposal, contradicted with armature movement with the first contact block in use, contradicting bar, due to second Distance of the contact block at driving lever shaft is greater than distance of first contact block at driving lever shaft, makes to dial when the first contact block is contradicted Rotation amplitude at bar rotation and the second contact block, which is greater than, contradicts bar to the promotion amplitude of the first contact block, moves to be exaggerated and contradict bar Dynamic stroke, structure is simple, good practical effect.

It is further arranged to: being provided with adjusting screw thread on the conflict bar, the conflict bar is connected by adjusting screw thread It is connected on armature.

By using above-mentioned technical proposal, it screw thread is adjusted by rotation can change and contradict bar towards the end of driving lever to holding in the mouth The distance between iron, can contradict the opportunity of bar the first contact block of conflict when mobile to wedge and contradict bar can push driving lever Rotation amplitude is adjusted, and structure is simple, easy to adjust.

Be further arranged to: the armature side wall offers the mounting groove that wedge is axially penetrated through along armature, the mounting groove In be provided with mounting bracket, the conflict bar is threadedly connected in mounting bracket.

By using above-mentioned technical proposal, mounting bracket contradicts bar for installing, and mounting groove allows mounting bracket portion Divide and be installed in mounting groove, has saved installation space.

Be further arranged to: the slot bottom of the mounting groove offers fixing threaded hole, offers in the mounting bracket several The adjustment hole being axially distributed along armature, the mounting bracket are fixed in mounting groove by fixing bolt, and the fixing bolt is worn It toning knothole and is threadedly coupled with fixing threaded hole.

By using above-mentioned technical proposal, can change by changing the adjustment hole and fixing threaded hole that connect with fixing bolt The mounting bracket position upward in armature shaft, to change the distance between the first contact block contradicted on bar and driving lever, adjusting is supported On the opportunity of feeler lever and the first contact block, structure is simple, easy to use.

It is further arranged to: being provided with stop nut on the conflict bar.

By using above-mentioned technical proposal, it can prevent conflict bar from loosening in mounting bracket by stop nut, thus So that state after the completion of debugging can be kept for a long time in the use process of brake, adjust through perseverance after avoiding installation Examination reduces workload when brake uses.

Be further arranged to: the armature surface opposite with magnetic yoke offers several pilot holes in correspondence with each other, described Guide post is provided in pilot hole in magnetic yoke, the pilot hole in the guide post and armature, which slides, to be connected.

By using above-mentioned technical proposal, it is arranged by sliding of the guide post in the pilot hole on armature, so that armature Guiding role can be played to armature along the axial movement of guide post when mobile.

It is further arranged to: the end and the pilot hole on the armature that the guide post protrudes into the pilot hole on armature Buffering spacer is provided between bottom hole.

By using above-mentioned technical proposal, armature into magnetic yoke moving process, pilot hole of the guide post on armature to this The bottom hole of pilot hole slides, and can collide with bottom hole, is buffered by buffering spacer, and guide post and pilot hole hole are reduced Noise when bottom is collided.

In conclusion the utility model has the following beneficial effects:

1, it is worked independently, is not interfere with each other, when one group of armature is because between friction plate and armature using two groups of magnetic yokes and armature The reasons such as dust or spring aging and can not push against, when leading to this group of brake fade, armature in another group is appointed so can be Spring effect is lower to push against friction plate, so that brake generates braking effect, structure is simple, and when use has dual fail-safe, more pacifies Entirely；

2, early warning is carried out using microswitch, passes through supporting for conflict bar in the energized state and armature of coil and driving lever Touching relationship judges whether brake operation is normal, and when armature is attracted by coil, the trigger member on armature is close to microswitch And it finally touches microswitch and makes microswitch generate electric signal and the electric signal is passed into alarm controller, controlling alarm Device judges whether to alarm according to the power on/off situation of coil and the electric signal of microswitch；When coil is in energized state And microswitch is when being triggered, illustrating that armature is mobile occurs hindering or coil is disconnected, and alarm controller is alarmed at this time, Prompt is broken down, and when the coil is de-energized, if microswitch is in triggering state, illustrates that armature is not pushed against with friction plate, system Dynamic device is in failure state, and alarm controller is alarmed at this time, prompts to break down, use is safer；

3, the distance between armature is arrived by the end that rotation adjusting screw thread can change conflict bar towards driving lever, it can be right The opportunity of bar the first contact block of conflict is contradicted when wedge is mobile and contradicting bar can push the rotation amplitude of driving lever to be adjusted, and is led to It crosses and changes the adjustment hole that connect with fixing bolt and fixing threaded hole can change the mounting bracket position upward in armature shaft, thus Change the distance between the first contact block contradicted on bar and driving lever, adjusts the opportunity for contradicting bar and the first contact block, structure is simple, makes With conveniently；

4, slid and cooperated by the pilot hole on guide post and armature, guiding role is played to the movement of armature, by Guide post and pilot hole when setting buffering spacer can reduce armature movement between the bottom hole and guide post of pilot hole on armature The collision of bottom hole reduces the noise of generation.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of embodiment brake；

Fig. 2 is embodiment brake perspective view of the explosion；

Fig. 3 is embodiment brake perspective view of the explosion, to indicate the structure and installation site of warning device；

Fig. 4 is the cross-sectional view of magnetic yoke, to indicate coil slot, coil and the installation relation of epoxy resin layer；

Fig. 5 is the installation relation cross-sectional view of guide post, hexagon socket head cap screw and buffering spacer in embodiment brake.

Appended drawing reference: 1, magnetic yoke；11, spring eye；2, armature；23, pilot hole；24, guide post；28, hexagon socket head cap screw； 25, buffering spacer；291, mounting groove；292, fixing threaded hole；293, mounting bracket；294, adjustment hole；295, fixing bolt；3, it rubs Wipe disk；31, spline；32, spline housing；4, coil slot；41, coil；42, epoxy resin layer；5, spring；8, warning device；81, micro- Dynamic switch；82, trigger member；83, stop nut；84, fixed bracket；9, amplifying device；91, driving lever；92, the first contact block；93, Two contact blocks.

Specific embodiment

A kind of brake, as shown in Figure 1 and Figure 4, including warning device 8 and the magnetic yoke set gradually 1, armature 2, friction Disk 3, magnetic yoke 1 and armature 2 are respectively provided with there are two and are arranged in a one-to-one correspondence, and offer coil slot 4 in magnetic yoke 1, in coil slot 4 It is provided with the coil 41 for making armature 2 close to magnetic yoke 1 for adsorbing corresponding armature 2 when being powered, is located at coil 41 in coil slot 4 The surface of armature 2 is provided with epoxy resin layer 42 thus by 41 enclosed package of coil in coil slot 4.

Frictional disk 3 and armature 2 are rotatablely connected.

As depicted in figs. 1 and 2, frictional disk 3 is set to armature 2 back to the side of magnetic yoke 1 and is rotatablely connected with armature 2, rubs The axle center for wiping disk 3 offers spline 31, and key connection has 31 sets of spline, and 31 sets of spline for carrying out key company with the shaft of load It connects.

As shown in Figure 2 and Figure 5, armature 2 offers several corresponding pilot holes 23, magnetic yoke 1 with the opposite surface of magnetic yoke 1 On pilot hole 23 in guide post 24 is fixed with by hexagon socket head cap screw 28, the pilot hole 23 in guide post 24 and armature 2 slides Connection.It is provided between the bottom of pilot hole 23 on the end and armature 2 of the pilot hole 23 that guide post 24 protrudes on armature 2 slow Rush gasket 25.

As shown in figures 1 and 3, warning device 8 includes microswitch 81, alarm controller and trigger member 82, trigger member 82 are set on armature 2 for triggering microswitch 81 when armature 2 contacts magnetic yoke 1, and alarm controller and microswitch 81 connect It connects to give alarm controller signal when microswitch 81 triggers.Amplification is provided between trigger member 82 and microswitch 81 Device 9.

As shown in figure 3, trigger member 82 includes contradicting bar, contradicts bar and be equipped with screw thread, offer mounting groove on 2 side wall of armature 291, the slot bottom of mounting groove 291 offers fixing threaded hole 292, is equipped with mounting bracket 293 in mounting groove 291, in mounting bracket 293 Several adjustment holes 294 being axially distributed along armature 2 are offered, mounting bracket 293 is by passing through adjustment hole 294 and being threadedly coupled Fixing bolt 295 in fixing threaded hole 292 is mounted in mounting groove 291.The adjustment hole passed through by replacing fixing bolt 295 294 can change position of the mounting bracket 293 in the axial direction of armature 2.Bar is contradicted to be threadedly connected in mounting bracket 293 and support The head of feeler lever is located at mounting bracket 293 towards the side of magnetic yoke 1.

Stop nut 83 is threaded on bar as shown in figure 3, contradicting.

As shown in figure 3, amplifying device 9 includes driving lever 91, the first contact block 92 and the second contact block 93.

As shown in figure 3, being equipped with fixed bracket 84 in magnetic yoke 1, microswitch 81 is installed on fixed bracket 84, driving lever 91 One end rotational installation is on fixed bracket 84 and being located at and contradict between bar and microswitch 81, the first contact block 92 and the second contact block 93 It is integrally formed on driving lever 91 and the first contact block 92 arrives driving lever 91 and fixes at a distance from 84 rotational installation of bracket less than second Contact block 93 arrives driving lever 91 and fixes at a distance from 84 rotational installation of bracket.First contact block 92 is located at driving lever 91 towards the table for contradicting bar Face, the second contact block 93 are located at one side of the driving lever 91 towards microswitch 81.When under magnetic fields of the armature 2 in coil 41 to magnetic yoke When 1 movement, contradicts bar and contradict the first contact block 92 of promotion so that driving lever 91 rotates, and makes the second contact block 93 and microswitch 81 contact is inconsistent to trigger microswitch 81.

Use principle: cutting 41 power supply of coil, so that coil 41 loses magnetic field, at this point, armature 2 loses the attraction in magnetic field It is mobile to the direction far from magnetic yoke 1 under the elastic force effect of spring 5 afterwards.Armature 2 is close to frictional disk 3 in the process and conflict rubs Wiping disk 3 makes frictional disk 3 be pushed against load above so that load can not rotate, to realize braking effect.

When coil 41 is powered, coil 41 generates magnetic field and generates attraction to armature 2, under the action of attraction, rank It is mobile to magnetic yoke 1 that iron 2 overcomes 5 elastic force of spring, so that frictional disk 3 is decontroled, so that opposite can turn between frictional disk 3 and load It is dynamic so that load be connected to frictional disk 3 31 sets of spline upper shafts can normal rotation and make load normal work.

The case where warning device 8 is connect with the power supply of coil 41, is powered according to coil 41 and microswitch 81 are triggered The case where judged, and determine whether alarm controller controls alarm and alarm.

When the power supply of coil 41 is powered, armature 2 is attracted by coil 41, and the trigger member 82 on armature 2 is close to microswitch It 81 and finally touches microswitch 81 microswitch 81 is generated and electric signal and the electric signal is passed into alarm controller.Electricity Source is powered and microswitch 81 is when being triggered, and alarm controller is not alarmed, but when power supply is powered and microswitch 81 not by When triggering, illustrates that armature 2 is mobile and be obstructed or 41 disconnection fault of coil, alarm controller is alarmed at this time.

When the power supply of coil 41 disconnects, armature 2 makes to contradict bar and fine motion far from magnetic yoke 1 under the effect of 5 elastic force of spring The contact of switch 81 is detached from, and microswitch 81 is in close state, and alarm controller controls warning device 8 without alarm.But It is, when the disconnection of the power supply of coil 41, which contradicts bar, still contradicts the contact of microswitch 81, when illustrating that coil 41 powers off, armature 2 prompt to break down, use is safer without frictional disk 3 even at the cost of one's life, misfunctioning of brake, the alarm of alarm controller control at this time.

In 2 moving process of armature, contradict bar contradict amplifying device 9 in the first contact block 92 with push driving lever 91 rotate, When driving lever 91 rotates, and the second contact block 93 on driving lever 91 is rotated with driving lever 91, the first contact block 92 to driving lever 91 and solid Distance at 84 rotational installation of fixed rack arrives driving lever 91 and fixes at a distance from 84 rotational installation of bracket less than the second contact block 93, the When one contact block 92 turns an angle, the angle of the second contact block 93 rotation can be more big, to realize amplification effect.

Bar is contradicted by rotation, thus it is possible to vary bar is contradicted back to the end of mounting bracket 293 at a distance from the first contact block 92, When to change the movement of armature 2, contradicts bar and contradict stroke required for the first contact block 92.

When wherein one group of magnetic yoke 1, armature 2 and frictional disk 3 occur the impurity such as dust occur between armature 2 and frictional disk 3 Or spring degradation failure, and cause armature 2 can not be normally under 5 active force of spring when abutting frictional disk 3, another group still can Enough frictional disks 3 that pushes against under the active force of spring 5 prevent frictional disk 3 from rotating,

Two groups of magnetic yokes 1, armature 2 and the autonomous working of frictional disk 3 are not interfere with each other, and in one group of failure, another group still can It works normally, to ensure that locking frictional disk 3 and load in failure, prevents load from working on and causing danger, thus Improve security performance.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (10)

1. a kind of brake, including magnetic yoke (1), armature (2) and frictional disk (3), set between the armature (2) and magnetic yoke (1) It is equipped with several springs (5), the coil (41) for adsorbing armature (2) is provided on the magnetic yoke (1), it is characterised in that: described Magnetic yoke (1) and armature (2) are respectively provided with there are two and are arranged in a one-to-one correspondence, and offer coil slot on each magnetic yoke (1) (4), the coil (41) there are two and be respectively arranged in each coil slot (4).

2. a kind of brake according to claim 1, it is characterised in that: brake further includes warning device (8), the report Alarm device (8) includes microswitch (81), alarm controller and trigger member (82), and the trigger member (82) is set to armature (2) for triggering microswitch (81) when armature (2) contact magnetic yoke (1) on, the alarm controller and microswitch (81) Connection is to give alarm controller signal when microswitch (81) are triggered.

3. a kind of brake according to claim 2, it is characterised in that: the trigger member (82) includes being set to armature (2) the conflict bar on, when armature (2) under the magnetic field suction of coil (41) close to magnetic yoke (1) movement when, the conflict bar with it is micro- The contact of dynamic switch (81) is inconsistent.

4. a kind of brake according to claim 3, it is characterised in that: the microswitch (81) and trigger member (82) Between be provided with amplifying device (9), the amplifying device (9) includes driving lever (91), the first contact block (92) and the second contact block (93), on magnetic yoke (1), second contact block (93) is set on the driving lever (91) and uses for driving lever (91) rotational installation In with the conflict of the contact of microswitch (81), first contact block (92) is set on the driving lever (91) and is used for and trigger member (82) contradict, first contact block (92) to driving lever (91) at magnetic yoke (1) rotational installation at a distance from less than the second contact block (93) To driving lever (91) at magnetic yoke (1) rotational installation at a distance from.

5. a kind of brake according to claim 4, it is characterised in that: be provided with adjusting screw thread, institute on the conflict bar It states conflict bar and is connected on armature (2) by adjusting screw thread.

6. a kind of brake according to claim 4, it is characterised in that: armature (2) side wall is offered along armature (2) The mounting groove (291) of wedge is axially penetrated through, is provided with mounting bracket (293) in the mounting groove (291), the conflict bar screw thread It is connected on mounting bracket (293).

7. a kind of brake according to claim 6, it is characterised in that: the slot bottom of the mounting groove (291) offers solid Determine screw hole (292), several adjustment holes (294) being axially distributed along armature (2) are offered on the mounting bracket (293), it is described Mounting bracket (293) is fixed in mounting groove (291) by fixing bolt (295), and the fixing bolt (295) passes through adjustment hole (294) and with fixing threaded hole (292) it is threadedly coupled.

8. a kind of brake according to claim 7, it is characterised in that: be provided with stop nut on the conflict bar (83)。

9. a kind of brake according to claim 1, it is characterised in that: the armature (2) and magnetic yoke (1) opposite surface Several pilot holes (23) in correspondence with each other are offered, are provided with guide post (24), institute in the pilot hole (23) on the magnetic yoke (1) Pilot hole (23) sliding stated on guide post (24) and armature (2) connects.

10. a kind of brake according to claim 9, it is characterised in that: the guide post (24) is protruded on armature (2) Buffering spacer (25) are provided between the bottom hole of pilot hole (23) on the end and the armature (2) of pilot hole (23).