Classifications

• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
  • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
  • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
  • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
  • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D65/00—Parts or details
  • F16D65/02—Braking members; Mounting thereof
  • F16D65/12—Discs; Drums for disc brakes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D65/00—Parts or details
  • F16D65/02—Braking members; Mounting thereof
  • F16D2065/13—Parts or details of discs or drums
  • F16D2065/1304—Structure
  • F16D2065/1316—Structure radially segmented
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D65/00—Parts or details
  • F16D65/02—Braking members; Mounting thereof
  • F16D2065/13—Parts or details of discs or drums
  • F16D2065/1304—Structure
  • F16D2065/132—Structure layered
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D65/00—Parts or details
  • F16D65/02—Braking members; Mounting thereof
  • F16D2065/13—Parts or details of discs or drums
  • F16D2065/134—Connection
  • F16D2065/1344—Connection permanent, e.g. by casting
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D2121/00—Type of actuator operation force
  • F16D2121/18—Electric or magnetic
  • F16D2121/20—Electric or magnetic using electromagnets

Definitions

• the present invention relates to a brake disc, and more particularly to a brake disc
• Brake disc that is suitable for magnetic brakes that should be used in vehicles, such as emergency stop brake or dynamic brake.
• Brake discs conventional vehicle disc brakes are usually made of metal and are suitably rotatably connected to the respective wheel to be braked. For braking, such a brake disc is then more or less clamped between two friction pads depending on the desired braking effect, which are mounted stationary on the vehicle.
• a brake disc for rail vehicles which has a hub provided with a support plate.
• On the support plate two brake friction plates are arranged in a circle which form the actual contact friction surfaces.
• the brake friction plates are connected to the support plate with suitable fasteners, such as bolts.
• Al friction bodies which generally have a carrier or a support plate and at least one friction lining arranged thereon.
• both the carrier and the at least one friction lining arranged on it consist of hardened friction materials based on reinforcing fibers, thermosetting binders and conventional fillers, so that the friction body is formed in one piece.
• Such friction bodies can be used as brake, clutch or other friction linings.
• a bistable magnetic brake is known from DE 197 52 543 A1, in which an armature disk arranged non-rotatably in the magnetic brake housing is provided with an annular disc-shaped brake pad fixedly mounted thereon.
• a brake or clutch disc On a to be braked or festditionden shaft of a drive a brake or clutch disc is rotatably pressed.
• the armature of the magnetic brake is pressed against the clutch disc, so that the drive is braked and detected by the frictional engagement between the rotationally fixed annular brake pad on the armature disc and the clutch disc.
• an electromagnetic brake with a permanent magnet which can be used as an emergency stop brake or dynamic brake for a drive, such as an electric drive for a vehicle.
• This known magnetic brake has a NEN brake body with a permanent magnet, which is rotatably held on a bearing plate on the stator or housing of the drive.
• An armature of the magnetic brake is rotatably mounted on a sleeve provided with a flange on a shaft to be braked of the drive so that it is axially displaceable between a braking position and a release position.
• the braking of the drive takes place by a frictional engagement between the armature and a corresponding end face of the brake body.
• this known magnetic brake is to be used as an emergency stop brake or dynamic brake see, it is expedient to provide the brake body in the region of its end face with a brake pad to increase the frictional engagement between the brake body and armature.
• the armature together with the flange having a sleeve rotatably mounted on the shaft to be braked brake disc which is pressed against the or against the brake pad on the brake body.
• the invention has for its object to provide a brake disc for an electromagnetic brake, which is used in particular as an emergency stop brake and / or dynamic brake, which ensures a large Aktuationskraft between the friction partners due to a magnetic field at low mass.
• the brake disc according to claim 1 thus has a carrier made of friction material on which a metal ring is arranged concentrically.
• the invention is based on the principle customary with magnetic brakes of using a metallic armature or a metallic brake disk and, if appropriate, between the armature and the corresponding counter-friction surface
• Friction materials to increase the frictional resistance insert and instead uses a carrier made of friction material with a metal ring, which can be reduced as a result of its function as an anchor to achieve an optimal ratio between mass of the brake disc and magnetic attraction between armature and magnetic brake body.
• the brake disc according to the invention due to the use of a carrier made of friction material on a very good damping behavior against vibrations, whereby unnecessary noise can be avoided.
• the metal ring is held in a form-fitting manner on the carrier, wherein the metal ring is pressed into the carrier.
• the metal ring is pressed into the carrier.
• the metal ring is held cohesively on the carrier.
• the service life of the brake according to the invention can be improved at high load cycle resistance so that the brake operates over at least 10 million switching cycles without failure of the brake disc.
• the metal ring has on its inner circumference one or more radially inwardly directed driver extensions, wherein preferably the one or more Mit Meetingfort algorithms to optimize the power flow in plan view extended tips.
• the extended tips of the Mit MeetingfortA in the plan view drop-shaped, circular, elliptical or polygonal.
• the metal ring consists of at least one inner ring and one outer ring, which are connected to one another via one or more webs.
• the metal ring of the brake disk according to the invention which takes over the function of an armature of a magnetic brake, designed accordingly the position of the magnetic poles of the magnetic brake.
• the driver extensions or the webs are distributed circumferentially uniformly.
• the circular disk-shaped carrier of friction material has a central hub portion with a concentric passage opening for receiving a shaft to be braked and a flange portion concentrically surrounding the hub portion having at least one friction surface, wherein the hub portion has an axial thickness has, which is equal to the thickness of the flange portion, or which is greater than the thickness thereof.
• the inner peripheral surface of the through hole is provided in the hub portion with driving means for non-rotatable mounting on a shaft to be braked ,
• the passage opening of the hub portion any non-circular shape - triangular, square, flattening with axial groove or the like - has, which corresponds to the outer periphery of the shaft to be braked and is suitable for a non-rotatable mounting.
• the entrainment means are formed by a toothing for receiving a shaft toothing on the shaft to be braked.
• the inner peripheral surface of the passage opening in the hub portion has a toothing for receiving a shaft toothing of the shaft to be braked.
• the brake disc according to the invention is provided with a smooth, so uninterrupted friction surface
• two or more axially over the surface of the metal ring segmentally protruding friction surfaces are provided on the flange portion, wherein the number the segment-like friction surfaces corresponds to the number of drivers or webs of the metal ring.
• the division of the friction surface in friction surface elements, which preferably correspond to the number of drivers or webs of the metal ring, leads to a further noise reduction.
• Figure Ia is a plan view of a brake disc according to the invention.
• FIG. 1b shows a section through a brake disk according to the invention substantially along the line Ib-Ib in FIG. 1a;
• Figure 2 is a plan view of a metal ring for a I O brake disc according to the invention.
• Figure 3 is a greatly simplified schematic sectional view of a drive arranged on a magnetic brake with a brake disc according to the invention.
• Figure 4a is a plan view of another embodiment of a brake disc according to the invention.
• FIG. 4b shows a section through a brake disk 9 according to the invention substantially along line IVb-IVb in FIG. 4a.
• the brake disk 9 has a carrier 10 made of friction material and a metal ring 11.
• the carrier 10 is designed in the form of a circular disk and comprises a central hub portion 12 with a through opening 13 arranged concentrically with respect to the outer circumference of the carrier 10 and a hub portion 12 of the hub portion 12.
• the hub portion 12 has in the illustrated embodiment in the axial direction of the through hole 13 has a thickness which is about 2 to 3 times as large as the thickness of the brake disc 9 in the region of the flange portion 14.
• the thickness of the hub portion is in the range from about 3 to 10 mm, in particular from about 6.5 to 7 mm, while the thickness of the flange portion 14 is between 1, 5 and 4 mm, and more preferably about 2.5 mm.
• the thickness dimensions specified in the exemplary embodiments depend very heavily on the field of application and on the size, that is to say in particular on the required diameter of the brake disk. With brake discs of 200 mm or 300 mm in diameter, as planned for heavy-duty and rail traffic, correspondingly larger brake disc thicknesses are required.
• the inner peripheral surface of the through hole 13 is provided with a toothing 16 which engages in a corresponding toothing on a shaft to be braked.
• the shaft may have a square or flattened and formed with axial spring shaft stub on which the brake disc is then placed with a corresponding square opening or a flattened opening with counter-groove.
• the carrier 10 is made of a fiber-filled, high-strength friction material, as indicated for example in DE 30 46 696.
• the metal ring 1 1 which is formed as a single outer ring is pressed in the preparation of the brake disc in the carrier 12 so that the carrier material at least partially overlaps the metal ring to form a positive connection between the metal ring 1 1 and the carrier 12, as indicated at 17 in FIG.
• the metal ring 1 With a thickness of the flange portion of about 2.5 mm, the metal ring 1 1, for example, about 1, 25 mm thick.
• the thickness of the metal ring in the range of 2/3 to 1/4 of the thickness of the brake disc in the region of the metal ring 1 1, so here in the region of the flange portion. These dimensions are also dependent on size.
• the metal ring 1 1 on its inner circumference
• the radially inner tips 20 are formed drop-shaped in plan view.
• other suitable forms of the extended tips may also be provided, such as e.g. circles
• both the arrangement and the number of Mitschfort engines 19 can be chosen arbitrarily. In this case, more driver extensions can be provided for larger brake disc diameters than for smaller diameters.
• the number of Mitschfort engines is suitably in the range of 2 to 12, in particular between 2 to 7, and preferably at 4, which are then preferably evenly distributed in the circumferential direction, so that the dynamic behavior of the brake disc is optimized both during rotation and during axial displacement.
• the carrier 12 has, structured by the driver projections 19 of the metal ring 4, sector-shaped friction surfaces 15 which lie above the surface of the metal ring 11 and overlap at 17.
• sector-shaped friction surfaces 15 which lie above the surface of the metal ring 11 and overlap at 17.
• the brake disc 9 rotatably, but slidably mounted in the axial direction on a shaft to be braked so that the steel ring made of sheet metal 1 1 and the friction surfaces 15 of a corresponding counter-friction surface 22 a rotatably mounted ga brake body 23rd a magnetic brake opposite.
• the brake body 23 consists for example of an inner ring 24, an outer ring 25 and a permanent magnet 26 arranged therebetween.
• a magnetic coil 27 mounted between the inner ring 24 and the outer ring 25 in the area of the counter friction surface 22 of the magnetic brake serves to compensate the magnetic field generated by the permanent magnet 26, so that the brake disk 9 can be moved away with the magnetic coil 27 switched by the counter-friction surface 22 of the magnetic brake by means not shown. So- but soon the current through the solenoid 27 is turned off, the
• the brake disk 9 shown in Figure 4 has a metal ring 1 1 'with an outer ring 28 and an inner ring 29, which are interconnected via webs 30.
• the carrier 10 of friction material extends to the formation of friction surfaces 15 through the inner ring 29, outer ring 28 and webs 30 limited window 31 of the metal ring 1 1 'through and in turn forms at the edges of the window 31 overlaps 17, which is the form-liquid mounting of the metal ring improve on the carrier 10.
• the positive connection can be provided for holding the metal ring 1 1, I T on the carrier 10 a material connection.
• a material connection In order to improve the fabric finish and to increase the adhesion between the preferably consisting of sheet steel metal ring 1 1, 1 1 'and the carrier 10 may be provided an adhesion promoter.
• the number of webs 30 between the inner and outer ring 29, 28 in the metal ring 1 1 'according to Figure 4, as well as the number of Mit supportivefort algorithms especially taking into account the diameter of the brake disc or its circumferential length in the region of the webs between 1 and n arbitrarily selected be in the illustrated embodiment with a disc diameter of about 70 mm, the number of webs in the range of 2 to 12, preferably between 2 and 7 should be.
• the metal ring 1 1, 1 1 ' can be provided not only on its inner circumference, but also on its outer circumference with Mitschfort arrangementsn that either complement or replace the inner Mit Vietnamese- extensions.
• the outer driver extensions which extend substantially radially outward, are provided in addition to the inner driver extensions, it is in principle conceivable to select the number and arrangement of the outer driver extensions independently of the inner ones, however it is useful for optimizing the power transmission between the carrier and metal ring, align the outer Mitauerfortodia to the inside, with each inner driver extension one, two or more outer driver extensions can be assigned.
• outer driver extensions are provided, these are combined individually or in groups, distributed evenly over the outer circumference of the metal ring.
• the outer Mit technicallyforstmatie are thus arranged symmetrically in the plane of the brake disc to the axis of rotation of the brake disc.
• the inner Mit resumefort disorders or webs are individually circumferentially distributed uniformly, it is also possible for the inner Mit resumefort algorithmsn, instead of, for example, four individual Mit resumefortance also four groups of two, three or more Mit favorfort algorithmsn or webs provide, which are then symmetrical to the axis of rotation to the brake disc to avoid a balancing.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Mechanical Engineering (AREA)
• Electromagnetism (AREA)
• Human Computer Interaction (AREA)
• General Physics & Mathematics (AREA)
• Braking Arrangements (AREA)
• Magnetic Record Carriers (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39463620

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (5)

Citations (3)

Family Cites Families (24)

• 2007
  • 2007-03-20 DE DE102007013401A patent/DE102007013401A1/de not_active Withdrawn
• 2008
  • 2008-03-19 EP EP08716631A patent/EP1994303B1/de not_active Not-in-force
  • 2008-03-19 US US12/532,039 patent/US20100032252A1/en not_active Abandoned
  • 2008-03-19 ES ES08716631T patent/ES2332546T3/es active Active
  • 2008-03-19 WO PCT/EP2008/002210 patent/WO2008113581A1/de not_active Ceased
  • 2008-03-19 DE DE502008000092T patent/DE502008000092D1/de active Active
  • 2008-03-19 AT AT08716631T patent/ATE441793T1/de active
  • 2008-03-19 JP JP2010500116A patent/JP5193281B2/ja not_active Expired - Fee Related

Patent Citations (3)

Also Published As

Similar Documents

Legal Events