DE1475455A1 - Electromagnetically operated disc brake - Google Patents

Description

Γ / M0llerstra6e 31 -

Dr. Expl.

DR.-ING. H. FINCKE β Munich ο,

DIPL.-INQ. H. BOHR DIPU-ING. S. STAEQER

Firn call. 22 49 41

Description of the patent application of the TnüV'.D'Griello au ! Te.torj.ol electromagnet.:! c-ue

S, IM , ' Fj, Sooiete Amnyma,
Jifi BXr.ro Ilocni't (Seine et Oloe) ! France

F.'r-Trr.;!;: ·.!;: '? 3. ilovQtrtJer 1964 Prankroich

"χίί ρIi /. :: ■ .Λ ..:, ϊΐί? ϊχσο1 ?. Oeti-vilgbare

Mo J: i.!. * Qad'in _; j boaxöht oich auf inabeeondere industriell vervfcidei-9 Bremeon, as eie e1; where the contents of lifting devices or handling devices are used o

Aua SicherheitegrünÄen it is günetig to achieve the braking action by simple meohenieohe relaxation of springs _"f press the one or more brake shoes against an organ welohes rotation with a eioh rotating member of the braked device is connected, wherein the loosening of the brake shoe by the opposing action of an electromagnet is achieved, the 2S.B. is connected to the terminals deo stator of a motor.

BATH 909820/0337

Brakes with external brake shoes, as they are consistently used for this purpose, result in considerable brake inferences when hoisting and in their use due to the expansion of the disc, which shows the rotating component to be braked _a

In contrast, a disc brake has to be braked de component represents a disk, in this case practically does not have the disadvantages mentioned above, since here only the thickness of the disc has to be taken into account.

TTm to avoid excessive heating of the disk due to additional friction due to off-centering of the brake shoes, it is essential to ensure a secure manner at the same time a distance of both brake shoes of the disk when the solenoid is energized, "Off-centering of the brake shoes, for example, occurs as a result of Wear of the linings on the jaws.

The invention is based on the object of an electromagnetically actuatable disc brake, especially for industrial applications Use in lifting devices and handling devices to create a space between the two brake shoes and the disc is always ensured in the unbraked state

909820/0337 _8A o

) ix ': t: lndvi'itg ^ cH b nuo vcn einero Schaibevibrens "with ku both jtiVT. fv '/ ΐοϊ j'.xe: irx.ic.hGibc, which starts with einp. oion <Ί:? ηΐ? .ο · ια <ί? ι component rcvuricüvKon. Device rotatably connected .lire, anßc

cwyljnokiir-.rv; o] oho {jlsitfiihig aui "" vicmigfrfcenn oinein ^ rp: '.' eiJ geJ.cgort n: L3Ki _t dor held by a rochtv / itilclig sur Eltone of ;; & ■ GMSscheibG nii «eoivdnet io« eoivdnet v; whether the brake ouels dv "rr; h •• ■, eni.iyÄT ·} a tension spring pressed against each other for each ou: c Breir-nbacken eats almost with the anchor ano electric vorljunüen and the other brake shoe firmly with the

don BXoktroiiia ^ is notsn connected such that, be in the flor F "lalr.ti oR> ugn <ston dio Beldon Bramabacken calibrated against 0.5" ¥ j.rinniß üo: -. ¹ Fovicr ^ oiioinandor remove .... : ..

Me 33rfindi'.iifi "iot in the v; e θ borrowed in it see _f that with such a Bj: * ow3ü an automatic centering device is provided iot, VLW don keep the same distance, \ m the aioh remove the brake jaws from the brake disc

A particular form of guidance is shown on the tenons Qufoinanüerfol.ßenci with v / eicher friction slidable one on one of the two essential parts of the electromagnet A harvest on the other essential rope of the electromagnet attached to the brake shoe, then on the other side the brake disc arranged a second brake shoe, which over Tension members with the said ϊβϋ coupled iat, with the

BATH ORIGINAL 909820/0337

Pin slidable even with fixed friction in the base are stored and on each pin a concentric to this lying helical spring is provided on the one hand on the called rope and on the other hand on the outer bottom of a Cap is supported »which faces the first brake shoe and engages in a ring around a collar part which is attached to the Pin is attached to the axial movement of the Bremsb & okens with respect to the pin, each pin being provided with a stop jencieits of the second brake shoe is to the axial movement of the brake shoe with respect to the Limit cones "

Such an arrangement is simple and robust and ensures an effective automatic centering of the brake shoes with respect to the brake disc, especially in the Wear of the friction linings

According to a preferred embodiment, two pins are provided, and these are arranged symmetrically in close proximity to the movable components. Babel let each cone be one coaxially assigned to this lying teder.

The electromagnet used for the brake according to the invention is preferably used with single-phase, or Zveiphaaen- Dreiphasenvecheelstrom conventional frequency-powered electromagnet ₀ "for

909820/0337 _ÖA0

Alternating currents have namely own responsibility, dad the generated force is only slightly dependent on the size of the air gap depends, ao that a Steohetellen the latter with the wear the friction linings are superfluous. The electromagnet can, of course, also be fed with direct current, whereby preferably a suitable regulation of the air gap is provided *

Invention is illustrated in the following with reference to echematic drawings

additionally described on several guiding games. : ·

■ ■■■■■ »** ■

Figures 1 and 2 are detailed views of two AusfUhrungsr forms of the brake according to the invention; . ':, ---'

FIG. 3 shows a view along the line III-III of Figure 2;

FIG. 4 is a view corresponding to FIG. 3, however

when the brake is applied;

FIG. 5 is a sonic view along the line YY in FIG.

The electromagnetic disc brake shown in the drawings comprises a brake disc 10 and a base 11, the Connections for clamping and releasing the brake disc 10

BATH ORIGINAL

909820/0337

«The base 11 can with respect to the brake disk 10 be arranged laterally, as shown in FIG. As a result, av / ei brakes can be used on the same disc. However, as shown in FIG. 2, the base can also lie below the brake disc. .

Regardless of the position of the base 11, it carries two pairs of tabs 12 (Figures 2 and 3), in which with medium strength Friction pins 13 are slidably mounted «,

Brake shoes 14 and 15, which can slide freely, clamp the brake disc 10 between them can · The brake shoes are covered with brake linings 16 or 17, which press against the corresponding end faces of the Brake disc 10 can come.

The brake disc 10 is activated by the action of the springs 18 clamped between the brake shoes 14 and 15. Each spring 18 is designed as a helical spring and has a pin 13 gea; corner, with one »end of the spring touching a rope 19, which is fixed to the brake shoe H via tension members 20 connected is. The other end of the spring rests on the outer bottom of a cap 21, the open side of which is directed towards the brake shoe 15.

909820/0337 bathroom

The part 19 let slidably mounted on the pin 13, while the tension members 20 at point 22 in their length are adjustable. Each cap 21 surrounds one on the pin 13 fixed collar part 23, and there is an axial play J between the collar part 23 and the Bremsbaoken 15 provided when the Brake is applied «The depth of the cap 21 is greater than the play J«

The brake shoes 14 and 15 are released on both sides of the brake disc 10 by means of an electromagnet Stable can be moved »For this purpose, part 19 carries a stitor part 24 of the electromagnet, which has a coil winding ' 25 and cooperates with the armature 26, which via an elastic device in the form of a ring connection 27 of a known type with the brake shoe ΐ5 ' connected is »This ring connection is characterized by a weak radial flexibility and considerable angular

moderate flexibility and is under the description of the goods ^w Silentbloo ^w known.

This arrangement is completed by two elastic humps 28 and enables precise contact between the components of the electromagnet with each other and reports vibrations of the anchor e as well as heating due to a poor

Air gap.

9098 2 0/0337 ^BAD crjginal

De :? Armature 26 and the stator part 24 are made of thin metal sheets assembled, which are riveted to supports that are in usually serve as brackets.

Each pin 13 also has an adjustable stop open, which the brake shoe 14 can come when the electromagnet is excited, and the brake shoe 15 is pushed back when the armature 26 comes into contact with the stator part 24 koiamt. The coil windings are protected by a removable housing 30.

The device works as follows:

When the electromagnet is de-energized, the springs 18 act in the direction to a removal of the brake bobbin 15 and the file 19 from each other, i.e. in the direction of * on an approach of the braking. bake 14 and 15 to each other. This approach continues until the friction linings 16 and 17 against the brake disk 10 koiamen. The setting is done in such a way that the game J »between the collar part 23 and the brake shoe 15 is provided is, and that 2, B. an equal game between the aneohlag 29 and the brake shoe 14 occurs.

When the electromagnet falls, the armature 26 becomes the same pulled against the stator part 24 so that the brake shoe 15 after overcoming the game J in contact with the

90 9820/033 7. . «*> ^

Part 23 is coming. The air gap is larger than the game. J selected and practically equal to twice the play * Therefore, the part 19 tends to approach the brake shoes as the air gap decreases The stop comes and the play J overcomes "The brake is released in this state and the two! Brake shoes 14 and 15 are each a distance from the brake disc 10 When the brake is activated, the electric control unit is activated so that the device changes from the state shown in FIG. 3 to the state shown in FIG. 4 _{or the like}

Enlarged with the abnucsurgion of the friction linings 16 and 17 dex stroke of the electromagnet, and the pins 13 can slide with a fixed friction in the LE.schen 12 «In this way ( the air gap remains between the brake disc and the brake pads the same on both sides of the brake disc, so that an exact automatic centering of the brake shoes in relation to dfö Brake disc is guaranteed. Of course it is a bit more difficult ongoing sliding movement of the pins 13, if necessary, only after the slight sliding movement of the brake shoes 14 and 15 «

BATH ORIGINAL

909820/0337

Auäorder can α ± νΛι dura · ι easy adjustment the brake w.aih dos Erfindimij to i / oröch: Lecien dicko Bremsacheiben customize Hi-irau f anlißt EIU ais L.inge the tension members 20 au adjust, J3oilaiin (de coll.. ntoile;? 3 Qit? .sustallen to dao game J au juatieriii, and nooh the tenons 13 to set up so that the same game J £: -v7iscbe:> i don Bcemabaekon 15 and the collar · share ί 3 occurs when I? cf3tspann . By a similar * input * it is possible to change the air gap, in particular for the configuration

recognizes that by using two pins 13 »Yiametr: sch in Bnaug an :? the moving components the plane de :? Eight at the pivot point K.aijaencenter of these components contains; and that consequently the sliding movement is facilitated It should be noted that each cone is concentric Spring zi is arranged, u: id dui? hence the effect of these feathers in the plane of the ilasaeiujittt'lpunkta of the movable components is exercised. Such an arrangement is a ver » clone connect?. 't.

BATH ORIGINAL

909820/0337

Claims (1)

Claims 1.Electromagnetic actuatable disc brakes, especially for industrial use with lifting devices or handling devices: with a brake disc on both sides that is rotationally connected to ainem.öiob d?. * Nl> oxide component of the device to be braked, arranged brake shoes that slide on at least one Journals are supported by iinera at right angles 2ti>? So-ikel arranged level of the brake disc eats, the brake shoes are pressed by at least one spring / Ögeneinter the brake shoes feet jit of the * armature of an electromagnet and the other Βϊ-οπεbacken firmly connected to the stator part of the electromagnet " is such that upon energization of the electromagnet, the two brake shoes against the action of Pede · from each other, remove, characterized ge characterizing zeicinet that Õîä automatic centering device is provided, v: keep equal au a is the distance by which the Β>? Remove the θιβ j jaws from the 3rems »disc, 2 »Disc brake according to Jlaepruch. 1, characterized in that one part (19) attached to one of the essential ropes (24, 26) of the electron, consecutively with slight friction, on the pegs, a first part (19) attached to the other essential part (26 or 24) attached brake shoes BATH ORIGINAL 909820/0337 P5), then sin on the other side of the brake disc (10) ewoiter brake shoes (U) is arranged, which is coupled via tension members (20) to said part (19) that the ' Pin (I3) itself with strong friction in the socket (IT) ' are slidably mounted and on each peg a concentrateoh . to this.ii lying coil spring (18) is provided, which is supported on the one hand on said part (19) and on the other hand on the outer bottom of a cap (21) which faces the first brake shoe (15) and engages in an annular collar part (23) which is attached to the pin (13) is to limit ο in ο axial movement of the first brake jaw (45) ^ ^: 1λ relation to the pin, and dme each pin; (13) beyond the second pulp jaw (H) old sines Ansohlag (29) pass 1st, to limit the axial movement of the «wide Β» βΊβ * - jaw H) in relation to the pin (13) see below /; H 3 * disc brake according to claim 1, characterized by ^, that the electromagnet (24, 25, 26) all AC magnets, is trained. . . . '■ · "■ 4. Disc brake according to claim 1 or 2, daduroh gekenn- ' shows that it has at least & wel pegs (13). 5. Disc brake according to claim 4, characterized in »that the pins are asymmetrical with respect to the movable components oind. 909820/0337 bathroom original 6. Disc brake according to claim 2 to 5 »characterized in that the tension members (20) can be divided in length. 7. Disc brake according to .Anspruch 2 to 6, characterized in that the stops (29) assigned to each pin in axial direction of the pin are adjustable. 8. Disc brake according to claim 1 to 7 »characterized in that between at least one brake shoe (15) and the with diecam connected part (26) of the electromagnet stoßdönpfeneio devices (28) (Silentblooe) are arranged. • 'eil! · Λ:.'. VJ. ,, t »a rt.isUrtl BATH ORIGINAL 909 8 2 0/0337