CN102306975B - Electromagnetic brake with chafing gear - Google Patents
Electromagnetic brake with chafing gear Download PDFInfo
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- CN102306975B CN102306975B CN 201110229838 CN201110229838A CN102306975B CN 102306975 B CN102306975 B CN 102306975B CN 201110229838 CN201110229838 CN 201110229838 CN 201110229838 A CN201110229838 A CN 201110229838A CN 102306975 B CN102306975 B CN 102306975B
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Abstract
The invention discloses an electromagnetic brake with a chafing gear, comprising a stator shell, a coil, an armature, a foundation bed and two groups of friction plate assemblies as well as a mounting seat, wherein the coil is arranged in the stator shell; the armature is arranged at one end of the stator shell and closes to the coil; the foundation bed is arranged at the other end of the stator shell and closes to the armature; the two groups of friction plate assemblies are arranged on the mounting seat and comprise one friction plate respectively; two friction plates of the two groups of friction plate assemblies are opposite in a face-to-face mode; and the two groups of friction plate assemblies are respectively connected with a resetting device which can cause the two groups of friction plate assemblies to move in the opposite directions. When the braking is removed, the resetting device in the electromagnetic brake is utilized to drive the two groups of friction plate assemblies to move in a direction far away from a brake disc, thus completely isolating the two friction plates from the brake disc. The electromagnetic brake is used for braking the brake disc, thus protecting the friction plates, improving the braking effect and prolonging the service life.
Description
Technical field
The present invention relates to a kind of electromagnetic brake, relate in particular to a kind of avoid under the brake off state because of friction plate and brake disc between mistake friction damage the electromagnetic brake with chafing gear of friction plate, belong to the production field of electromagnetic brake.
Background technology
Electromagnetic brake is the mechanical device that utilizes power supply and spring to brake as countershaft or the brake disc of power source, wherein, the structure of the electromagnetic brake that brake disc (brake disc is connected with the machine that needs braking such as the rotor of winch) is braked 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 plate, and two friction plates 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 electromagnetic brake is mainly used on the hoisting 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 hoisting equipment.For electromagnetic brake, 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 operation principle of above-mentioned electromagnetic brake is: when coil electricity produces magnetic field, the 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 plate 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 plate of the friction plate assembly above it contact with brake disc, and the friction plate 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 electromagnetic brake is: (1) is when brake off, the friction plate of armature one side breaks away from first, then by force crowded the opening of the friction plate of pedestal one side realized that both sides break away from by brake disc, the mistake friction may occur with brake disc in friction plate like this, thereby the friction plate temperature is raise, affect life-span and the braking effect of brake, accelerate the wearing and tearing of friction plate, thereby increase the adjustment frequency of brake clearance, cause the brake brake fade when serious, even burn brake and elevator, thereby cause safety problem.(2) when braking, two friction plates are subjected to the tangential force of brake disc finally to be delivered on the fixed pin shaft by friction plate-pedestal and friction plate-armature-stator case-pedestal respectively, because the U-shaped cellular construction of pedestal and stator case design, make this tangential force direction of transfer and its tangential direction on brake disc be a very large angle, be unfavorable for the transmission of this tangential force, when causing braking, the tangential force of brake disc is impacted very large to brake, easily cause brake to damage, easily make fixed pin shaft produce the winding degree distortion simultaneously; Fixed pin shaft winding degree distortion consequence is: during braking, reduce the real contact area of brake bush and brake disc, reduced braking effect, also make the friction plate concentrated wear serious, the life-span of having reduced brake; During brake off, make the brake clearance between two friction plates and the brake disc inhomogeneous, local gap increases, improved the pick-up voltage of armature, armature can not be by adhesive when serious, and brake can't brake off, and machinery (such as winch) is braked always and can't works.(3) between stator case and the armature, between armature and the friction plate, be rigid attachment between pedestal and the friction plate, middle without buffering noise abatement element, the friction plate of brake on braking its armature of moment and pedestal is very large to the rigid shock of brake disc, brake is also very large to the rigid shock of stator case at adhesive moment armature, noise is all very large when causing brake in braking and removing braking, has a strong impact on the comfort of mechanical terminations user (such as elevator customer).(4) in misoperation 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 brake stator case and the armature, friction plate 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 brake is in on-position always very large difficulty, produce potential safety hazard when serious.(5) at coil electricity with to keep its input voltage of section conduction time (armature and stator case adhesive) always constant, be specified input voltage, power is always constant, (keep machine operation at long-term brake off, this moment, coil electricity moved up and down such as elevator) situation under, the electric energy that electromagnetic brake consumes is very large, cause the brake temperature rise very high, affect its safety in utilization.
Summary of the invention
Purpose of the present invention provides a kind of electromagnetic brake with chafing gear with regard to being in order to address the above problem, this brake can avoid under the brake off state because of friction plate and brake disc between mistake friction damages friction plate, also have advantages of life-saving, reduce noise, miss emergency brake brake off and energy-conservation.
The present invention realizes above-mentioned purpose by the following technical solutions:
The present invention includes stator case, coil, armature, pedestal, two groups of friction plate assemblies, mount pad; Described coil is installed in the described stator case; Described armature is installed in an end of described stator case, and near described coil; Described pedestal is installed in an end of described stator case, and near described armature; Described friction plate assembly is installed on the described mount pad, and described two groups of friction plate assemblies include a friction plate, and two friction plates of described two groups of friction plate assemblies face to face; Wherein, described two groups of friction plate assemblies all are connected with and make described two groups of friction plate assemblies to the resetting means that mutually moves away from direction.
When brake off, the present invention drives friction plate assembly to the direction motion of leaving brake disc by resetting means, thereby realizes the thorough disengaging of two friction plates and brake disc.
Particularly, described resetting means comprises back-moving spring; Take the central axial direction of described coil as axial direction, parallel with described axial direction for the direction of the installing hole that described friction plate assembly is installed on the described mount pad, be provided with and the homoaxial blind hole of described installing hole around the described installing hole, described blind hole is several, in the described blind hole back-moving spring is installed, one end of described back-moving spring is installed in the bottom of described blind hole, the other end of described back-moving spring is installed on the described friction plate assembly, and the mounting screw of described friction plate assembly passes the axial hole of described back-moving spring.This structure is built-in, when reaching the mechanism effect, also can keep the harmonious attractive in appearance of Whole Equipment.
The structure of described resetting means can also for: described resetting means comprises reset tension spring; Take the central axial direction of described coil as axial direction, between described pedestal and the adjacent described friction plate assembly, between described armature and the adjacent described friction plate assembly the parallel reset tension spring of several and described axial direction is installed.
Particularly, described friction plate assembly also comprises fixed cap, elastomeric pad and baffle plate, described elastomeric pad is between described fixed cap and described baffle plate, connect by parting of baffle bolt and baffle plate lining between described fixed cap and the described baffle plate, described parting of baffle bolt head is installed on the described baffle plate, an end face of described baffle plate lining contacts with described fixed cap, and another end face of described baffle plate lining contacts with described parting of baffle bolt head, and described friction plate is installed in the outer face of described fixed cap; Described baffle plate is installed on the described mount pad, and is connected with described resetting means.
Described elastomeric pad can play the cushioning effect in the power transmission, can reduce noise; Simultaneously, also be provided with groove on the side of described fixed cap, round section joint ring is installed in the groove, round section joint ring exposes the fraction height, the installing hole that utilizes round section joint ring and fixed support that described friction plate assembly is installed cooperates, and friction plate assembly is suspended in this hole also can moves axially.
Further, described mount pad is fixed support, and the support installing hole is set on the described fixed support, and described support bracket fastened upper end is connected with described pedestal with adjusting nut by adjusting screw, on the described adjustment screw adjustment spring is installed; Described two groups of friction plate assemblies all are installed with coupling sleeve away from an end of its friction plate, be separately installed with the bolt with described coupling sleeve end contact on described armature and the described pedestal, wherein the end face of the end face of the coupling sleeve of one group of described friction plate assembly and described armature bolt is relative, and another end face of coupling sleeve of organizing described friction plate assembly is relative with the end face of described foundation bolt.Use a fixed support that two friction plate assemblies are installed, not only be convenient to processing and installation, and the frictional force of being convenient to brake disc is passed over is carried out safe handling.
Further, the friction radius tangential of the line of centres of two described support installing holes and described friction plate, the impact of brake disc in the time of can reducing to brake.Brake disc to the impulse force of friction plate by the fixed support transmission, a series of harmful effects of having avoided the traditional braking device to bring because of the distortion of fixed pin shaft winding degree.
Further, the end face of described coupling sleeve is spherical inner concave, and the end face of described armature bolt and described foundation bolt is spherical outer convex surface, stablizes cooperating more between friction plate assembly and armature and the pedestal, reliably thereby make.
Further, " O " shape rubber ring is installed between described armature and the described stator case.When armature and stator case adhesive,, contact with " O " shape rubber ring first 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 power supply of described coil is the overexcitation power supply, the patented technology that described overexcitation power supply was declared in the past for the applicant (concrete technology contents sees that the patent No. is the patent document of ZL200720080086.9).Because the gap length between armature and the stator case has determined the size of the magnetic field force that armature and stator case adhesive is required, so needed magnetic field force is maximum during the beginning adhesive, and required magnetic field force will be much smaller finish (general 1～1.5S time can be finished adhesive) in adhesive after, so the traditional braking device adopts constant voltage source, after armature and stator case adhesive, there is the phenomenon of magnetic field force waste (being power dissipation).And use the overexcitation power supply, the voltage of supplying with coil within coil electricity 1～1.5S time equals rated voltage; 1～1.5S is after the time, and namely when the electric current maintenance stage (stage of the brake off after armature and the stator case adhesive), the voltage of overexcitation power supply supply coil becomes 1/2 times of rated voltage.Because resistance value R is constant, so the power of coil consumption is about 1/4 times of (P=U of original power
2/ R, that is: power=voltage
2/ resistance), thus realize energy-conservation; Simultaneously, power reduction, and then the reduction of temperature rising amplitude are greatly improved device security.
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.Under normal circumstances, during braking, armature promotes friction plate 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 plate 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.
Beneficial effect of the present invention is:
The present invention is the important technology improvement to electromagnetic brake and application thereof; Its advantage is embodied in:
(1) by make two groups of described friction plate assemblies mutually away from resetting means drive friction plate assembly when the brake off to the direction motion of leaving brake disc, thereby realize the thorough disengaging of two friction plates and brake disc, prevent that the mistake friction from producing, and improved life-span of the present invention, braking effect and fail safe;
(2) by the design fixed support, make brake disc to the tangential force of friction plate along its direction of motion straight line transmission on brake disc, avoided this power to be the angle transmission at parts of the present invention, reduced the impact of this power to parts of the present invention, avoid the tangential force of brake disc to impact all harmful effects that bring, improved braking effect of the present invention, life and reliability;
(3) by between the fixed cap of friction plate assembly and baffle plate, elastomeric pad being installed, and between fixed cap and baffle plate, stay certain interval, when braking, utilize this gap to make elastomeric pad produce distortion, utilize it to be out of shape to slow down two groups of friction plate assemblies to the impact of brake disc, thereby reach the purpose that reduces the noise of the present invention when braking;
(4) by " O " shape rubber ring is installed between stator case and armature, when stator case and armature adhesive, utilize and " O " rubber shape to enclose to slow down armature to the impact of stator case, thereby reach the purpose of the noise when reducing the brake brake off;
(5) by release lever is installed, spur by force armature and make it close with stator case, brake off, prevent misoperation braking or large gap can't adhesive or during fault to using and keep in repair the inconvenience that brings;
(6) with the power supply of overexcitation power supply as coil, guaranteeing the present invention's energy normal brake application and removing under the condition of braking, reduce the present invention at the power of electric current maintenance stage, thereby reach energy-conservation and reduce temperature rise of the present invention, improve the purpose of safety in utilization of the present invention.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of the electromagnetic brake of band chafing gear of the present invention;
Fig. 2 is the left TV structure schematic diagram of the electromagnetic brake of band chafing gear of the present invention;
Fig. 3 is that the A-A that the electromagnetic brake of band chafing gear of the present invention among Fig. 2 adds behind the coil power analyses and observe the structure for amplifying schematic diagram;
Fig. 4 is the structural representation of friction plate assembly in fixed support in the electromagnetic brake of band chafing gear of the present invention;
Fig. 5 is that the B-B among Fig. 3 analyses and observe and dwindles structural representation;
Fig. 6 is the enlarged drawing of C among Fig. 3;
Fig. 7 is the enlarged drawing of D among Fig. 3;
Fig. 8 is the enlarged drawing of E among Fig. 3.
Shown in the figure: 1-coupling sleeve, 2-pedestal nut, 3-foundation bolt, 4-coupling sleeve joint bolt, the 5-baffle plate, 6-elastomeric pad, 7-fixed cap, 8-mounting screw, the 9-round section joint ring, 10-axle sleeve, 11-back-moving spring, 12-pedestal lining, 13-pedestal joint bolt, 14-overexcitation power supply, 15-release lever, the 16-Elastip pin, 17-armature bolt, 18-handle inner nut, the 19-stator case, 20-handle joint bolt, 21-handle outer nut, the 22-steel ball, 23-stage clip, 24-coil, the 25-rubber blanket, 26-plain washer sheet, 27-armature joint bolt, 28-" O " shape rubber ring, 29-armature, 30-torsion spring, the 31-fixed support, 32-brake disc, 33-friction plate, the 34-parting of baffle bolt, 35-baffle plate lining, 36-pedestal, 37-adjusts screw, and 38-adjusts spring, 39-adjusting nut, 40-sensing screw, 41-sensing nut, 42-sensitive switch, 51-support installing hole, 52-axle sleeve hole, 55-blind hole.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described in detail:
Such as Fig. 1-shown in Figure 4, the present invention includes stator case 19, coil 24, armature 29, pedestal 36, fixed support 31 and two groups of friction plate assemblies; Wherein, coil 24 is installed in the stator case 19; Armature 29 is installed in an end of stator case 19 by armature joint bolt 27, and near coil 24; In the installing hole that armature 29 is installed, be provided with torsion spring 30, armature joint bolt 27 passes torsion spring 30, the head of armature joint bolt 27 is placed rubber blanket 25 peaceful washer plates 26, and the via hole of armature 29 cooperates with Elastip pin 16, and armature 29 can move axially along Elastip pin 16; Pedestal 36 is installed in an end of stator case 19 by pedestal joint bolt 13 and pedestal lining 12, and near armature 29; Be provided with axle sleeve 10 in the axle sleeve hole 52 of fixed support 31, pedestal joint bolt 13 and pedestal lining 12 pass axle sleeve 10, and " U " shape unit that pedestal 36 and stator case 19 form can be in axial sliding at fixed support 31; Fixed support 31 is by two support installing holes 51 and other fixed installation body (such as the winch support, not shown) fixed installation, the friction radius tangential of the line of centres of two support installing holes 51 and the friction plate of described friction plate assembly 33.Also are connected with adjusting nut and are connected with pedestal 36 by adjusting screw 37 in the upper end of fixed support 31, adjustment spring 38 is installed on the adjustment screw 37.
The effect of adjusting screw 37, adjustment spring 38 and adjusting nut 39 is as follows: when installing after initial installation and the gap adjustment, adjust this three parts, realize that fixed support 31 interior two friction plates 33 equate with gap between the brake disc 32, simultaneously adjust spring 38 at armature 29 during by adhesive and can also promote whole " U " shape unit to the direction motion of leaving stator case 19, thereby make 33 pairs of brake discs 32 of friction plate of pedestal 36 1 sides lose braking force, be convenient to back-moving spring 11 friction plate 33 is ejected, guarantee to have the gap between friction plate 33 and the brake disc 32.
Such as Fig. 3 and shown in Figure 8, described friction plate assembly comprises fixed cap 7, elastomeric pad 6 and baffle plate 5, elastomeric pad 6 is between fixed cap 7 and baffle plate 5, connect by parting of baffle bolt 34 and baffle plate lining 35 between fixed cap 7 and the baffle plate 5, parting of baffle bolt 34 heads are installed on the baffle plate 5, and an end face of baffle plate lining 35 contacts with fixed cap 7, and another end face contacts with the head of parting of baffle bolt 34,33, two friction plates 33 of friction plate are installed face to face in the outer face of fixed cap 7.
Such as Fig. 3 and shown in Figure 6, each organize described friction plate assembly all be connected with make two groups of described friction plate assemblies to mutually away from the resetting means of direction motion, described resetting means comprises back-moving spring 11; Take the central axial direction of coil 24 as axial direction, direction for the installing hole that described friction plate assembly is installed is parallel with described axial direction, be provided with several and the homoaxial blind hole 55 of described installing hole around the described installing hole, back-moving spring 11 is installed in the blind hole 55, one end of back-moving spring 11 is installed in the bottom of blind hole 55, the other end is installed on the baffle plate 5, and mounting screw 8 passes the axial hole of back-moving spring 11; Side at fixed cap 7 is provided with groove, round section joint ring 9 is installed in the groove, round section joint ring 9 exposes the fraction height, and the installing hole that utilizes round section joint ring 9 and fixed support 31 that described friction plate assembly is installed cooperates, and friction plate assembly is suspended in this hole also can moves axially.This structure is relatively more stealthy, also better appearance.
As shown in Figure 3, two groups of described friction plate assemblies all are installed with coupling sleeve 1 by coupling sleeve joint bolt 4 and pedestal nut 2 away from an end of its friction plate 33, the end face of coupling sleeve 1 is spherical inner concave, be separately installed with on armature 29 and the pedestal 36 can with the bolt of the end contact of coupling sleeve 1, the end face of armature bolt 17 and foundation bolt 3 is spherical outer convex surface, wherein the end face of the coupling sleeve 1 of one group of described friction plate assembly is corresponding with the position of the end face of armature bolt 17, and another end face of coupling sleeve 1 of organizing described friction plate assembly is corresponding with the position of the end face of foundation bolt 3.
Such as Fig. 3, Fig. 5 and shown in Figure 7, " O " shape rubber ring 28 is installed between armature 29 and the stator case 19.Armature 29 is during with stator case 19 adhesive,, contacts with " O " shape rubber ring 28 first with before stator case 19 contacts at armature 29, slowed down the rigid shock of 29 pairs of stator cases 19 of armature, thereby reduced the noise of the present invention when brake off.
As shown in Figure 3, the power supply of coil 24 is overexcitation power supply 14, and the input of overexcitation power supply 14 connects with the wire of drawing of coil 24.Because the gap length between armature 29 and the stator case 19 has determined the size of the magnetic field force that armature 29 and stator case 19 adhesives are required, so needed magnetic field force is maximum during the beginning adhesive, and required magnetic field force will be much smaller after adhesive is finished, so the traditional braking device adopts constant voltage source, after armature 29 and stator case 19 adhesives, there is the phenomenon of magnetic field force waste.Overexcitation power supply 14 of the present invention is supplied with coil 24 in coil 24 energisings voltage equals rated voltage; 1～1.5S is after the time, and namely when the electric current maintenance stage (stage of the brake off after armature and the stator case adhesive), the voltage that overexcitation power supply 14 is supplied with coil 24 becomes 1/2 times of rated voltage.Because resistance value R is constant, so the power that coil 24 consumes is about 1/4 times of (P=U of original power
2/ R, that is: power=voltage
2/ resistance), thus realize energy-conservation; Owing to power reduction of the present invention, its temperature rise also diminishes simultaneously, and safety in utilization of the present invention is improved.
As shown in Figure 3, stator case 19 is equipped with release lever 15 away from an end of armature 29, take the central axial direction of coil 24 as axial direction, be provided with the handle through hole of described axial direction in the stator case 19, release lever 15 is connected with armature 29 by the handle joint bolt 20 that passes described handle through hole, on the handle joint bolt 20 in the described handle through hole handle inner nut 18 is installed, between handle inner nut 18 in the described handle through hole and the hole wall of described handle through hole stage clip 23 is installed, in the stator case 19 bottom surface counterbores steel ball 22 is installed, the end face that steel ball 22 is released handle 15 surrounds, and locked with handle outer nut 21.Under normal circumstances, during braking, armature 29 promotes friction plate 33 and holds brake disc 32 tightly under the elastic force effect of stage clip 23, and during brake off, the magnetic field magnetic that coil 24 produces is made every effort to overcome the elastic force that takes stage clip 23 makes stator case 19 adhesive armatures 29.Under abnormal condition, make armature 29 can't be by the magnetic field force adhesive of coil 24 time as reaching in the unexpected gap between outage or stator case 19 and the armature 29, friction plate 33 is braking with locked wheels dish 32 always, at this moment can pull release lever 15, the elastic force that overcomes stage clip 23 with manpower makes armature 29 near stator case 19, thus brake off.
As shown in figures 1 and 3, sensing screw 40 is installed on the armature 29, locked fixing with sensing nut 41, sensing screw 40 afterbodys contact with switch of sensitive switch 42, and the precompressed certain distance.The effect of sensitive switch 42 is as follows: monitor state of the present invention, guarantee that brake disc 32 rotates front friction plates 33 and throws off, prevent that brake disc 32 from rotating under by the state of friction plate 33 lockings and cause damaging and drive the motor that brake disc 32 rotates even the consequence that causes fire; When beginning to brake, armature 29 drives together motion of sensing screw 40, switch of sensitive switch 42 is released, switching circuit disconnects, the control system of the motor power of control drive brake disc 32 rotations is cut off the power supply simultaneously, the motor dead electricity, armature 29 contacts with brake disc 32 with friction plate 33 on the pedestal 36, and brake disc 32 is braked; When brake off, two friction plates 33 in the fixed support 31 separate with brake disc 32, armature 29 drives together motion of sensing screw 40, switch of sensitive switch 42 is by 40 pushings of sensing screw, switching circuit is connected, the control system of control motor power is switched on simultaneously, and motor gets electric, and brake disc 32 begins to rotate.
Below in conjunction with Fig. 1-Fig. 3 workflow of the present invention is specified:
In the situation that coil 24 does not have power supply input or dead electricity, the electromagnetic force that coil 24 does not produce electromagnetic force or generation disappears, the interior several torsion springs 30 of stator case 19 promote armature 29 move along Elastip pin 16 axial directions to brake disc 32 directions (being to left movement among Fig. 3), armature 29 band moving armature bolts 17 are together to left movement, the baffle plate 5 of the friction plate assembly of armature bolt 17 promotion armature 29 1 sides is to left movement, because baffle plate 5 connects with fixed cap 7 by parting of baffle bolt 34 and baffle plate lining 35, so baffle plate 5 is subjected to can promote elastomeric pad 6 and fixed cap 7 after the thrust, the friction plate 33 that fixed cap 7 promotes armature 29 1 sides contacts with brake disc 32.In this process, the positive pressure that produces when 33 pairs of brake discs of friction plate 32 of armature 29 1 sides is during greater than the positive pressure of 11 pairs of pedestals of pedestal 36 1 side back-moving springs this moment, 36 1 side shields 5, opposition pulling " U " shape unit of the friction plate 33 of 32 pairs of armature 29 1 sides of brake disc moves to stator case 19 directions together, foundation bolt 3 on the pedestal 36 promotes the friction plate assembly of pedestal 36 1 sides together to the motion of brake disc 32 directions, and the friction plate 33 of pedestal 36 1 sides contacts with brake disc 32.Be that fixed support 31 two interior friction plates 33 move to relative direction, the braking with locked wheels dish 32 together, thereby realize the present invention to the braking of brake disc 32, and namely machinery is such as the winch stop motion.
In the situation that coil 24 must be electric, coil 24 generates an electromagnetic field, the magnetic line of force passes stator case 19 and armature 29 and air gap between the two, magnetic field force overcomes the thrust of 30 pairs of armature 29 of torsion spring, attracts armature 29 with the direction motion (be in Fig. 3 move right) of moving armature bolt 17 to stator case 19.In this process, when the remaining positive pressure of 33 pairs of brake discs of friction plate 32 of armature 29 1 sides less than this moment armature 29 1 sides the positive pressure of 11 pairs of baffle plates 5 of back-moving spring the time, the friction plate assembly that the back-moving spring 11 of armature 29 1 sides promotes armature 29 1 sides breaks away from brake disc 32, and namely the friction plate 33 of armature 29 1 sides breaks away from brake disc 32.When friction plate 33 leaves brake disc 32, the adjustment spring 38 of pedestal 36 between fixed support 31 promotes " U " shaped element part and moves towards pedestal 36 directions, the back-moving spring 11 of pedestal 36 1 sides promotes the friction plate assembly disengaging brake disc 32 of pedestals 36 1 sides at this moment, and namely the friction plate 33 of pedestal 36 1 sides breaks away from brake discs 32.Be that two friction plates 33 move in the opposite direction in the fixed support 31, throw off together brake disc 32, machinery begins to rotate such as winch.
Claims (10)
1. electromagnetic brake with chafing gear comprises stator case, coil, armature, pedestal, two groups of friction plate assemblies, mount pad; Described coil is installed in the described stator case; Described armature is installed in an end of described stator case, and near described coil; Described pedestal is installed in an end of described stator case, and near described armature; Described friction plate assembly is installed on the described mount pad, and described two groups of friction plate assemblies include a friction plate, and two friction plates of described two groups of friction plate assemblies face to face; It is characterized in that: described two groups of friction plate assemblies all are connected with and make described two groups of friction plate assemblies to the resetting means that mutually moves away from direction.
2. the electromagnetic brake with chafing gear according to claim 1, it is characterized in that: described resetting means comprises back-moving spring; Take the central axial direction of described coil as axial direction, parallel with described axial direction for the direction of the installing hole that described friction plate assembly is installed on the described mount pad, be provided with and the homoaxial blind hole of described installing hole around the described installing hole, in the described blind hole back-moving spring is installed, one end of described back-moving spring is installed in the bottom of described blind hole, the other end of described back-moving spring is installed on the described friction plate assembly, and the mounting screw of described friction plate assembly passes the axial hole of described back-moving spring.
3. the electromagnetic brake with chafing gear according to claim 1, it is characterized in that: described resetting means comprises reset tension spring; Take the central axial direction of described coil as axial direction, between described pedestal and the adjacent described friction plate assembly, between described armature and the adjacent described friction plate assembly reset tension spring parallel with described axial direction is installed all.
4. the electromagnetic brake with chafing gear according to claim 1, it is characterized in that: described friction plate assembly also comprises fixed cap, elastomeric pad and baffle plate, described elastomeric pad is between described fixed cap and described baffle plate; Connect by parting of baffle bolt and baffle plate lining between described fixed cap and the described baffle plate, described parting of baffle bolt head is installed on the described baffle plate, an end face of described baffle plate lining contacts with described fixed cap, another end face of described baffle plate lining contacts with described parting of baffle bolt head, and described friction plate is installed in the outer face of described fixed cap; Described baffle plate is installed on the described mount pad, and is connected with described resetting means.
5. the electromagnetic brake with chafing gear according to claim 1, it is characterized in that: described mount pad is fixed support, the support installing hole is set on the described fixed support, described support bracket fastened upper end is connected with described pedestal with adjusting nut by adjusting screw, on the described adjustment screw adjustment spring is installed; Described two groups of friction plate assemblies all are installed with coupling sleeve away from an end of its friction plate, be separately installed with the bolt with described coupling sleeve end contact on described armature and the described pedestal, wherein the end face of the end face of the coupling sleeve of one group of described friction plate assembly and described armature bolt is relative, and another end face of coupling sleeve of organizing described friction plate assembly is relative with the end face of described foundation bolt.
6. the electromagnetic brake with chafing gear according to claim 5 is characterized in that: the friction radius tangential of the line of centres of two described support installing holes and described friction plate.
7. the electromagnetic brake with chafing gear according to claim 5, it is characterized in that: the end face of described coupling sleeve is spherical inner concave, the end face of described armature bolt and described foundation bolt is spherical outer convex surface.
8. the electromagnetic brake with chafing gear according to claim 1 is characterized in that: " O " shape rubber ring is installed between described armature and the described stator case.
9. the electromagnetic brake with chafing gear according to claim 1, it is characterized in that: the power supply of described coil is the overexcitation power supply.
10. the electromagnetic 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110229838 CN102306975B (en) | 2011-08-11 | 2011-08-11 | Electromagnetic brake with chafing gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110229838 CN102306975B (en) | 2011-08-11 | 2011-08-11 | Electromagnetic brake with chafing gear |
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| Publication Number | Publication Date |
|---|---|
| CN102306975A CN102306975A (en) | 2012-01-04 |
| CN102306975B true CN102306975B (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110229838 Active CN102306975B (en) | 2011-08-11 | 2011-08-11 | Electromagnetic brake with chafing gear |
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| Country | Link |
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| CN (1) | CN102306975B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198384A3 (en) * | 2016-05-20 | 2018-08-30 | Jungblut Windelements Gmbh & Co. Kg | Brake assembly and preload device, in particular for the brake assembly |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339339B (en) * | 2017-07-12 | 2023-07-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Brake and motor |
| CN108223623A (en) * | 2018-02-27 | 2018-06-29 | 遨博（北京）智能科技有限公司 | A kind of disk type electromagnetic brake and joint of robot |
| CN115173624B (en) * | 2022-07-26 | 2023-09-15 | 常州合力电器有限公司 | Direct current brushless motor for mower with startup protection |
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| US4820946A (en) * | 1988-05-19 | 1989-04-11 | Harnischfeger Corporation | Electromagnetic brake |
| CN200976524Y (en) * | 2006-11-21 | 2007-11-14 | 应忠杰 | Brake device for electronic speed-governing motor of industrial sewing machine |
| CN202188051U (en) * | 2011-08-11 | 2012-04-11 | 成都瑞迪机械实业有限公司 | Electromagnetic brake provided with friction proofing device |
-
2011
- 2011-08-11 CN CN 201110229838 patent/CN102306975B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4820946A (en) * | 1988-05-19 | 1989-04-11 | Harnischfeger Corporation | Electromagnetic brake |
| CN200976524Y (en) * | 2006-11-21 | 2007-11-14 | 应忠杰 | Brake device for electronic speed-governing motor of industrial sewing machine |
| CN202188051U (en) * | 2011-08-11 | 2012-04-11 | 成都瑞迪机械实业有限公司 | Electromagnetic brake provided with friction proofing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198384A3 (en) * | 2016-05-20 | 2018-08-30 | Jungblut Windelements Gmbh & Co. Kg | Brake assembly and preload device, in particular for the brake assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102306975A (en) | 2012-01-04 |
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Effective date of registration: 20170912 Address after: Shuangliu District of Sichuan province 610000 Avenue Chengdu City West four No. 909 in Hong Kong Patentee after: Chengdu Ruidi Machinery Technology Co. Ltd. Address before: West Port Avenue 610000 Sichuan city in Chengdu Province, southwest of Shuangliu County Airport Development Zone No. 909 two Patentee before: Ruidi Machinery Ind Co., Ltd., Chengdu |
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Address after: Shuangliu District of Sichuan province 610225 Avenue Chengdu City West four No. 909 in Hong Kong Patentee after: Chengdu Ruidi Zhiqu Technology Co.,Ltd. Address before: Shuangliu District of Sichuan province 610000 Avenue Chengdu City West four No. 909 in Hong Kong Patentee before: CHENGDU REACH MACHINERY Co.,Ltd. |