CN102306975A - Electromagnetic brake with chafing gear - Google Patents
Electromagnetic brake with chafing gear Download PDFInfo
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- CN102306975A CN102306975A CN201110229838A CN201110229838A CN102306975A CN 102306975 A CN102306975 A CN 102306975A CN 201110229838 A CN201110229838 A CN 201110229838A CN 201110229838 A CN201110229838 A CN 201110229838A CN 102306975 A CN102306975 A CN 102306975A
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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 of the band 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 the 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; Said coil is installed in the said stator case; Said armature is installed in the end of said stator case near said coil through screw and Elastip pin; Said pedestal and said stator case are near an end screw attachment of said armature; Form the U-shaped unit; This U-shaped unit can move on fixed pin shaft; Said fixed pin shaft one end is fixed on machinery (like the winch) support; The other end is unsettled; Therefore the U-shaped unit forms a beam type structure on fixed pin shaft; Two friction plate assemblies are installed on respectively on said pedestal and the said armature; Each is organized said friction plate assembly and includes a friction plate, and two friction plates face to face; Central axial direction with said coil is an axial direction, and said pedestal can move by small distance on said axial direction, and said armature can move on said axial direction.Above-mentioned electromagnetic brake is mainly used on the hoisting equipment (like elevator, tower crane etc.), and supporting with it is winch.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.As far as electromagnetic brake, the client is more and more tighter to the requirement of life-span, fail safe and the reliability of product, and energy-conservation, the comfort to product proposed clear and definite requirement simultaneously.
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 of the armature disengaging winch of band 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 earlier; By force crowded the opening of the friction plate of pedestal one side realized that both sides break away from by brake disc then; The mistake friction may take place with brake disc in friction plate like this; Thereby the friction plate temperature is raise; Influence the 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 through 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 big angle; Be unfavorable for the transmission of this tangential force; When causing braking; The tangential force of brake disc is impacted very big to brake; Cause brake to damage easily, fixed pin shaft is produced around the degree distortion; Fixed pin shaft around 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 (like winch) is braked and can't operate as normal always.(3) between stator case and the armature, between armature and the friction plate, be rigid attachment between pedestal and the friction plate; Middle nothing buffering noise abatement element; The friction plate of brake on braking its armature of moment and pedestal is very big to the rigid shock of brake disc; Brake is also very big to the rigid shock of stator case at adhesive moment armature; Cause brake noise when braking and releasing braking all very big, have a strong impact on the comfort of mechanical terminations user (like elevator customer).(4) in misoperation or when breaking down; Reach like the gap between sudden power or brake 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; If need brake off (need to rise or descend this moment like elevator; Perhaps need more renewal of facing renewal, adjustment brake clearance etc.); All will bring very big difficulty, produce potential safety hazard when serious because brake is in on-position always.(5) at coil electricity with to keep its input voltage of section conduction time (armature and stator case adhesive) constant always; Be specified input voltage; Power is constant always; (keep machine operation at long-term brake off; This moment, coil electricity moved up and down like elevator) situation under, the electric energy that electromagnetic brake consumes is very big; Cause the brake temperature rise very high, influence its safety in utilization.
Summary of the invention
The object of the 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 life-saving, reduce noise, miss emergency brake brake off and energy-saving advantages.
The present invention adopts following technical scheme to realize above-mentioned purpose:
The present invention includes stator case, coil, armature, pedestal, two groups of friction plate assemblies, mount pad; Said coil is installed in the said stator case; Said armature is installed in an end of said stator case, and near said coil; Said pedestal is installed in an end of said stator case, and near said armature; Said friction plate assembly is installed on the said mount pad, and said two groups of friction plate assemblies include a friction plate, and two friction plates of said two groups of friction plate assemblies face to face; Wherein, said two groups of friction plate assemblies all are connected with and make said two groups of friction plate assemblies to the resetting means that moves away from direction each other.
When brake off, the present invention drives friction plate assembly to the direction motion of leaving brake disc through resetting means, thereby realizes the thorough disengaging of two friction plates and brake disc.
Particularly, said resetting means comprises back-moving spring; Central axial direction with said coil is an axial direction; The direction of installing hole that is used to install said friction plate assembly on the said mount pad is parallel with said axial direction; Be provided with and the homoaxial blind hole of said installing hole around the said installing hole; Said blind hole is several; In the said blind hole back-moving spring is installed; One end of said back-moving spring is installed in the bottom of said blind hole; The other end of said back-moving spring is installed on the said friction plate assembly, and the mounting screw of said friction plate assembly passes the axial hole of said back-moving spring.This structure is built-in, when reaching the mechanism effect, also can keep the harmonious attractive in appearance of equipment integral.
The structure of said resetting means can also for: said resetting means comprises reset tension spring; Central axial direction with said coil is an axial direction, between said pedestal and the adjacent said friction plate assembly, between said armature and the adjacent said friction plate assembly the parallel reset tension spring of several and said axial direction is installed.
Particularly; Said friction plate assembly also comprises fixed cap, elastomeric pad and baffle plate; Said elastomeric pad is between said fixed cap and said baffle plate; Connect through baffle plate screw and baffle plate lining between said fixed cap and the said baffle plate; Said baffle plate screw head is installed on the said baffle plate; An end face of said baffle plate lining contacts with said fixed cap, and another end face of said baffle plate lining contacts with said baffle plate screw head, and said friction plate is installed in the outer face of said fixed cap; Said baffle plate is installed on the said mount pad, and is connected with said resetting means.
Said elastomeric pad can play the cushioning effect in the power transmission, can reduce noise; Simultaneously; On the side of said fixed cap, also be provided with groove, 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 said friction plate assembly is installed cooperates, and friction plate assembly is suspended in this hole also can moves axially.
Further, said mount pad is a fixed support, and the support installing hole is set on the said fixed support, and said support bracket fastened upper end is connected with said pedestal with the adjustment nut through the adjustment screw, on the said adjustment screw adjustment spring is installed; Said 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 that contacts with said coupling sleeve end face on said armature and the said pedestal; Wherein the end face of the end face of the coupling sleeve of one group of said friction plate assembly and said armature bolt is relative, and another end face of coupling sleeve of organizing said friction plate assembly is relative with the end face of said 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 said support installing holes and said 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 be brought around the degree distortion because of fixed pin shaft.
Further, the end face of said coupling sleeve is spherical inner concave, and the end face of said armature bolt and said 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 said armature and the said stator case.When armature and stator case adhesive, with before stator case contacts, contact with " O " shape rubber ring earlier, slowed down the rigid shock of armature, thereby reduced the noise of the present invention when brake off stator case at armature.
Further, the power supply of said coil is the overexcitation power supply, the patented technology that said overexcitation power supply was declared for the applicant in the past (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; Will be much smaller and accomplish the required magnetic field force in (general 1～1.5S time can be accomplished adhesive) back in adhesive; 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 in coil electricity 1～1.5S time, supplying with coil equals rated voltage; 1～1.5S is after the time, and promptly 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, said stator case is equipped with release lever away from an end of said armature; Central axial direction with said coil is an axial direction, is provided with the handle through hole of said axial direction in the said stator case; Said release lever is connected with said armature through the handle joint bolt that passes said handle through hole; In the said 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 elastic force that the magnetic field magnetic force that coil produces overcomes stage clip makes the stator case adhesive armature.Under improper situation; Reach like the gap between sudden power 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) through make two groups of said friction plate assemblies each other 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 the mistake friction generates, improved life-span of the present invention, braking effect and fail safe;
(2) through the designs fix 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 on parts of the present invention, to be the angle transmission; Reduced of the impact of this power to parts of the present invention; Avoid the tangential force of brake disc to impact all harmful effects that brought, improved braking effect of the present invention, life-span and reliability;
(3) through 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 and slow down of the impact of two groups of friction plate assemblies, thereby reach the purpose that reduces the noise of the present invention when braking brake disc;
(4), when stator case and armature adhesive, utilize this " O " rubber shape to enclose and slow down the impact of armature, thereby reach the purpose of the noise when reducing the brake brake off stator case through " O " shape rubber ring is installed between stator case and armature;
(5) through release lever is installed, spur armature by force and make it close with stator case, brake off prevents that misoperation braking or big gap can't adhesives or give during fault and use and keep in repair the inconvenience that brings;
(6) with the power supply of overexcitation power supply as coil; Guaranteeing the normal brake application of the present invention's ability and removing under the condition of braking; Reduce the present invention at the power of electric current maintenance stage, thus reach energy-conservation with 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 sketch map of the electromagnetic brake of band chafing gear of the present invention;
Fig. 2 is the left TV structure sketch map 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 sketch map;
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; 34-baffle plate screw, 35-baffle plate lining, 36-pedestal; 37-adjusts screw, and 38-adjusts spring, and 39-adjusts 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 made further specific descriptions:
Like 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 through 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 through pedestal joint bolt 13 and pedestal lining 12, and near armature 29; In the axle sleeve hole 52 of fixed support 31, be provided with axle sleeve 10, pedestal joint bolt 13 passes axle sleeve 10 with pedestal lining 12, and pedestal 36 can be in axial sliding on fixed support 31 with " U " shape unit that stator case 19 forms; Fixed support 31 is through two support installing holes 51 and other fixed installation body (like 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 said friction plate assembly 33.The upper end of fixed support 31 also is connected with pedestal 36 with adjustment nut 39 through adjustment screw 37, and adjustment spring 38 is installed on the adjustment screw 37.
The effect of adjustment screw 37, adjustment spring 38 and adjustment nut 39 is following: when install initial installation and adjustment back, gap; Adjust this three parts; Realize that fixed support 31 interior two friction plates 33 equate with gap between the brake disc 32; Simultaneously armature 29 during by adhesive adjustment adjustment spring 38 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.
Like Fig. 3 and shown in Figure 8; Said 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 through baffle plate screw 34 and baffle plate lining 35 between fixed cap 7 and the baffle plate 5; Baffle plate screw 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 baffle plate screw 34; 33, two friction plates 33 of friction plate are installed face to face in the outer face of fixed cap 7.
Like Fig. 3 and shown in Figure 6, each organize said friction plate assembly all be connected with make two groups of said friction plate assemblies to each other away from the resetting means of direction motion, said resetting means comprises back-moving spring 11; Central axial direction with coil 24 is an axial direction; The direction of installing hole that is used to install said friction plate assembly is parallel with said axial direction; Be provided with several and the homoaxial blind hole 55 of said installing hole around the said 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; The side of 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 said 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 said 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 the bolt that can contact on armature 29 and the pedestal 36 with the end face 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 said 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 said friction plate assembly is corresponding with the position of the end face of foundation bolt 3.
Like 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 adhesives,, contacts with " O " shape rubber ring 28 earlier 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 an overexcitation power supply 14, and the input of overexcitation power supply 14 connects with the lead 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 accomplished; 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 promptly 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; Central axial direction with coil 24 is an axial direction; Be provided with the handle through hole of said axial direction in the stator case 19; Release lever 15 is connected with armature 29 by the handle joint bolt 20 that passes said handle through hole; On the handle joint bolt 20 in the said handle through hole handle inner nut 18 is installed; Between the handle inner nut 18 in the said handle through hole and the hole wall of said 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 elastic force that the magnetic field magnetic force that coil 24 produces overcomes stage clip 23 makes stator case 19 adhesive armatures 29.Under improper situation; Reach like the gap between sudden power or stator case 19 and armature 29 and to make armature 29 can't be by the magnetic field force adhesive of coil 24 time; 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 following: monitor state of the present invention; Guarantee that brake disc 32 rotates front friction plates 33 and throws off, prevent that brake disc 32 is in rotation and the consequence that causes damaging drive brake disc 32 motor rotating even cause fire down by the state of friction plate 33 lockings; When beginning to brake; Armature 29 drives sensing screw 40 motion together; Switch of sensitive switch 42 is released; Switching circuit breaks off; The control system of control drive brake disc 32 motor rotating power supplys 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 sensing screw 40 motion together; 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:
Do not have at coil 24 under the situation of power supply input or dead electricity; The electromagnetic force that coil 24 does not produce electromagnetic force or generation disappears; In the stator case 19 several torsion springs 30 promote armature 29 along Elastip pin 16 axial directions to brake disc 32 directions move (being among Fig. 3) to left movement; Armature 29 drives armature bolt 17 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 baffle plate screw 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 of armature 29 1 sides 32 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 braking of the present invention to brake disc 32, and promptly machinery is like the winch stop motion.
Get under the electric situation at coil 24; 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 to drive the direction motion (be in Fig. 3 move right) of armature bolt 17 to stator case 19.In this process; When the remaining positive pressure of 33 pairs of brake discs of friction plate of armature 29 1 sides 32 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 promptly 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 " shape element 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 promptly 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 brake disc 32 together, machinery begins to rotate like winch.
Claims (10)
1. electromagnetic brake with chafing gear comprises stator case, coil, armature, pedestal, two groups of friction plate assemblies, mount pad; Said coil is installed in the said stator case; Said armature is installed in an end of said stator case, and near said coil; Said pedestal is installed in an end of said stator case, and near said armature; Said friction plate assembly is installed on the said mount pad, and said two groups of friction plate assemblies include a friction plate, and two friction plates of said two groups of friction plate assemblies face to face; It is characterized in that: said two groups of friction plate assemblies all are connected with and make said two groups of friction plate assemblies to the resetting means that moves away from direction each other.
2. the electromagnetic brake of band chafing gear according to claim 1 is characterized in that: said resetting means comprises back-moving spring; Central axial direction with said coil is an axial direction; The direction of installing hole that is used to install said friction plate assembly on the said mount pad is parallel with said axial direction; Be provided with and the homoaxial blind hole of said installing hole around the said installing hole; In the said blind hole back-moving spring is installed; One end of said back-moving spring is installed in the bottom of said blind hole; The other end of said back-moving spring is installed on the said friction plate assembly, and the mounting screw of said friction plate assembly passes the axial hole of said back-moving spring.
3. the electromagnetic brake of band chafing gear according to claim 1 is characterized in that: said resetting means comprises reset tension spring; Central axial direction with said coil is an axial direction, between said pedestal and the adjacent said friction plate assembly, between said armature and the adjacent said friction plate assembly reset tension spring parallel with said axial direction is installed all.
4. the electromagnetic brake of band chafing gear according to claim 1 is characterized in that: said friction plate assembly also comprises fixed cap, elastomeric pad and baffle plate, and said elastomeric pad is between said fixed cap and said baffle plate; Connect through baffle plate screw and baffle plate lining between said fixed cap and the said baffle plate; Said baffle plate screw head is installed on the said baffle plate; An end face of said baffle plate lining contacts with said fixed cap; Another end face of said baffle plate lining contacts with said baffle plate screw head, and said friction plate is installed in the outer face of said fixed cap; Said baffle plate is installed on the said mount pad, and is connected with said resetting means.
5. the electromagnetic brake of band chafing gear according to claim 1; It is characterized in that: said mount pad is a fixed support; The support installing hole is set on the said fixed support; Said support bracket fastened upper end is connected with said pedestal with the adjustment nut through the adjustment screw, on the said adjustment screw adjustment spring is installed; Said 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 that contacts with said coupling sleeve end face on said armature and the said pedestal; Wherein the end face of the end face of the coupling sleeve of one group of said friction plate assembly and said armature bolt is relative, and another end face of coupling sleeve of organizing said friction plate assembly is relative with the end face of said foundation bolt.
6. the electromagnetic brake of band chafing gear according to claim 5 is characterized in that: the friction radius tangential of the line of centres of two said support installing holes and said friction plate.
7. the electromagnetic brake of band chafing gear according to claim 5 is characterized in that: the end face of said coupling sleeve is spherical inner concave, and the end face of said armature bolt and said foundation bolt is spherical outer convex surface.
8. the electromagnetic brake of band chafing gear according to claim 1 is characterized in that: " O " shape rubber ring is installed between said armature and the said stator case.
9. the electromagnetic brake of band chafing gear according to claim 1 is characterized in that: the power supply of said coil is the overexcitation power supply.
10. the electromagnetic brake of band chafing gear according to claim 1 is characterized in that: said stator case is equipped with release lever away from an end of said armature; Central axial direction with said coil is an axial direction, is provided with the handle through hole of said axial direction in the said stator case; Said release lever is connected with said armature through the handle joint bolt that passes said handle through hole; In the said 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102306975A true CN102306975A (en) | 2012-01-04 |
| CN102306975B 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 |
|---|---|
| CN (1) | CN102306975B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339339A (en) * | 2017-07-12 | 2017-11-10 | 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 |
| CN115173624A (en) * | 2022-07-26 | 2022-10-11 | 常州合力电器有限公司 | Direct-current brushless motor with starting protection function for mower |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3246588A1 (en) * | 2016-05-20 | 2017-11-22 | Jungblut wind elements GmbH & Co. KG | Braking or sliding device |
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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 |
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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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339339A (en) * | 2017-07-12 | 2017-11-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Brake and motor |
| 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 |
| CN115173624A (en) * | 2022-07-26 | 2022-10-11 | 常州合力电器有限公司 | Direct-current brushless motor with starting protection function for mower |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102306975B (en) | 2013-01-30 |
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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. |