DK153905B - MOUNTING DEVICE FOR DRUM BRAKE TRACKS IN TRAILERS WITH A BRAKE BRAKE - Google Patents
MOUNTING DEVICE FOR DRUM BRAKE TRACKS IN TRAILERS WITH A BRAKE BRAKE Download PDFInfo
- Publication number
- DK153905B DK153905B DK100482A DK100482A DK153905B DK 153905 B DK153905 B DK 153905B DK 100482 A DK100482 A DK 100482A DK 100482 A DK100482 A DK 100482A DK 153905 B DK153905 B DK 153905B
- Authority
- DK
- Denmark
- Prior art keywords
- brake
- support
- pivot
- tray
- primary
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/20—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer
- B60T7/203—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer with automatic brake release or reduction in case of reverse travel, e.g. by means of mechanisms mounted on the draw bar
- B60T7/206—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer with automatic brake release or reduction in case of reverse travel, e.g. by means of mechanisms mounted on the draw bar by means of mechanisms mounted on trailer drum 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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
- Feedback Control In General (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
- 1 -- 1 -
DK 153905 BDK 153905 B
Opfindelsen angår en modlejeanordning for de to fra en svømmende tilspændingsindretning bortvendende ender af bremsebakkerne i tromlebremser til påløbsbremsede påhængskøretøjer med fast understøtning af den ene ende af primaerbakken ved fremadkørsel og en med primær bakken 5 leddet forbundet svingningsstøtte, som tjener til understøtning af den ene ende af sekundærbakken, og som ved baglænskørsel og deraf følgende bremseaktivering viger tilbage mod primærbakkens ende mod virkningen af en fjeder. Afstanden mellem bremsebakkernes ender er således formindsket ved baglænskørsel, hvorved en fastspænding mod bremsetromlen for-10 hindres.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a counterbalance device for the two ends of drum brakes facing away from a floating clamping device to drum brakes for trailer braking trailers with fixed support of one end of the primer tray at forward travel and a pivot support connected to the primary tray 5 which serves to support one end. the secondary tray, and which, when reversed and consequent brake activation, recoils toward the primary tray end against the action of a spring. Thus, the distance between the ends of the brake trays is reduced by reverse travel, thereby preventing a clamping against the brake drum.
Fra DE-fremlæggelsesskrift 25 07 697 kendes en konstruktion af den indledningsvis beskrevne art af modlejeanordninger, hvor en svingarm er udført som toarmet vægtstang, hvis centrale drejningspunkt er forbundet med primærbakken. Ved fremadkørsel er primærbakken fast understøttet på 15 huset, medens svingarmen er svinget hen i retning mod sekundærbakken.From DE-presenting specification 25 07 697 there is known a construction of the kind described initially by countermeasures, in which a pivot arm is designed as a two-armed lever whose central pivot point is connected to the primary tray. On forward travel, the primary tray is firmly supported on the housing, while the swing arm is pivoted toward the secondary tray.
Denne er via en støttestiver understøttet på den ene arm af svingarmen.This is via a support strut supported on one arm of the swing arm.
Ved baglænskørsel svinges svingarmen via den arm, på hvilken støttestiveren indvirker, i retningen mod primærbakken ved hjælp af sekundærbakkens støttekraft, hvorved sekundærbakken nærmer sig primærbakken, hvil-20 ket praktisk taget forhindrer bremsningen ved baglænskørsel.In reverse travel, the pivot arm is pivoted via the arm on which the support strut acts in the direction toward the primary tray by the support force of the secondary tray, whereby the secondary tray approaches the primary tray, which virtually prevents braking during reverse travel.
Fra DE-fremlæggelsesskrift 2 161 559 kendes ligeledes en på lignende måde virkende modlejeanordning med en fast lejret svingarm. Ved denne løsning indvirker imidlertid primaerbakken med sin understøtningskraft ved fremadkørsel sammen med fjederen med en momentarm på svingar-25 men til drejning af denne i retning mod sekundærbakkens arbejdsstilling og lægger svingarmen mod et faststående anslag. Tilsvarende forskydes primaerbakken ved baglænskørsel, når det fra sekundærbakken på svingarmen indvirkende moment får overvægten, så at svingarmen undviger en tiIspænding.DE-presentation specification 2,161,559 also discloses a similarly acting counterbalancing device with a fixedly mounted swivel arm. In this solution, however, the primer tray acts with its supporting force on forward travel together with the spring with a torque arm on the pivot 25, for turning it in the direction of the working position of the secondary tray and places the pivot arm against a fixed stop. Similarly, the primer tray is displaced by reverse travel when the torque acting on the swingarm causes the overweight to actuate, so that the swingarm avoids a tension.
30 En ulempe ved de to ovenfor beskrevne konstruktioner er, at der ikke opnås nogen automatisk kompensering af slidet på bremsebelægnin-gen.A disadvantage of the two designs described above is that no automatic compensation of the wear of the brake lining is obtained.
Fra FR-patentskrift 1 484 045 kendes en servobremseudførelse med servovirkning i begge køreretninger, hvor de to svømmende bremsebakker 35 er indbyrdes forbundet via en svingarm. Det særegne ved denne konstruk- - 2 -FR patent specification 1 484 045 discloses a servo-braking embodiment with servo effect in both driving directions, where the two floating brake trays 35 are connected to one another via a swing arm. The peculiarity of this construction - 2 -
DK 153905 BDK 153905 B
tion består i, at denne svingarm har vekslende svingføringer for hver svingretning, alt efter drejningsretningen, hvilke svingføringer for en drejningsretning hver har et spillerum ved den anden drejningsretning.It consists in the fact that this pivot arm has alternating pivot guides for each pivot direction, depending on the direction of rotation, which pivot guides for one direction of rotation each have a clearance at the other direction of rotation.
De nævnte svingføringer ligger ved hver sin ende af svingarmen, medens 5 de alt efter omdrejningsretningen under delvis centrerede føring indvirker på de anliggende bremsebakker mellem svingføringerne ved vekslende angrebspunkter.Said pivot guides lie at each end of the pivot arm, while depending on the direction of rotation under partially centered direction, they act on the abutting brake pads between the pivot guides at alternating attack points.
I dette patentskrift er ikke indeholdt nogen anvendelseshenvisning til realiseringen af køretøjsbremser med baglænskørselautomatik.This patent does not contain any application reference for the realization of vehicle brakes with reverse driving.
10 Opfindelsen har til formål ved en modlejeanordning af den indled ningsvis angivne art foruden et lavt bremsemoment ved baglænskørsel at opnå en automatomatisk kompensering af slid på bremsebelægningen.The object of the invention is to achieve an automatic compensation of wear on the brake lining in addition to a low braking torque at reverse, in addition to a low braking torque when reversing.
Opfindelsen er baseret på den opgave at udforme en modlejeanord-ning for bremser med baglænskørselautomatik af den omhandlede art på en 15 sådan måde, at bremsebakkerne ved forskydning af disse indenfor bremse-tromlen ved slid på bremsebelægningen indtager en forøget indbyrdes afstand som følge af virkningen af modlejeanordningen.The invention is based on the object of designing a counterbalance device for brakes with reverse driving automatics of the type in question in such a way that when the brakes are displaced within the brake drum upon wear of the brake lining, the brake pads assume an increased distance from each other due to the effect of modlejeanordningen.
Ifølge opfindelsen løses opgaven ved, at der for svingstøtten i primærbakkens kraftretning på begge sider af drejningspunktet er an-20 bragt to på bremsepladen fastsiddende anslag, og at afstandene mellem bremsebakkernes indvirkning på svingsningsstøtten, udgående fra det indre afslag, er således dimensioneret, at svingstøtten på kendt måde ved baglænskørsel som følge af sekundærbakkens kraft er svingelig omkring det indre anslag mod virkningen af fjederen, hvorhos svingstøtten har 25 en i retning af svingstøttens ledkontur tilbagetrukken kontur for det ydre anslag.According to the invention, the task is solved by the fact that for the pivot support in the primary direction of force of the primary tray two abutments are arranged on the brake plate, and that the distances between the effect of the brake pads on the pivot support, starting from the inner turn, are dimensioned so that the pivot support In a known manner, in reverse travel due to the force of the secondary tray, the pivot is pivoted about the inner impact against the action of the spring, the pivot support having a contour retracted for the outer impact in the direction of the pivot support.
Ved den ovenfor beskrevne modlejeanordning ifølge opfindelsen optræder følgende fordele:The above-described counterbalancing device according to the invention has the following advantages:
Kraften af den på svingstøtten indvirkende fjeder kan være meget 30 lille, fordi primærbakkens støttekraft frembringer et modmoment ved fremadkørsel. Dermed virker der kun et meget ringe bremsemoment ved baglænskørsel. Endvidere kan bremsebelægningssliddet kompenseres indenfor visse grænser, hvis svingstøttens kontur ved de indre anslag har et forløb, som fjerner sig fra svingsstøttens drejningspunkt.The force of the spring acting on the pivot support may be very small, because the support force of the primary tray produces a counter-torque on forward travel. This means that only a very low braking torque is applied when driving backwards. Furthermore, the brake lining wear can be compensated within certain limits if the pivot support contour at the inner stops has a course which is removed from the pivot support pivot point.
35 Dette muliggøres ved svingstøttens ledforbindelse med primaarbak-This is made possible by the pivot support joint connection with the primary tray.
DK 153905 BDK 153905 B
- 3 - ken, svingsstøttens konkur og beliggenheden af anslagene.- 3 - the bankruptcy of the swing support and the location of the estimates.
Opfindelsen er nærmere forklaret i det følgende under henvisning til tegningen, på hvilken 5 fig. 1 viser en modlejeanordning ifølge opfindelsen og fig. 2 samme ved slid på bremsebelægningerne.The invention is further explained in the following with reference to the drawing, in which: FIG. 1 shows a counterbalance device according to the invention and FIG. 2 same when wearing the brake pads.
Primærbakken 1 og sekundærbakken 2 sidder på en bremselejeplade, ført i en bremsetromle 3 og aktiveres af en svømmende lejret tilspæn-10 dings indretning. Aktiveringskræfterne og -vejene for den ikke viste tilspændingsindretning frembringes af en påløbsbremseindretning.The primary tray 1 and the secondary tray 2 sit on a brake bearing plate, guided in a brake drum 3 and are actuated by a swimmingly mounted tensioning device. The actuating forces and paths of the clamping device (not shown) are produced by an inlet braking device.
Primær- og sekundærbakkerne er på kendt måde ved hjælp cif ikke viste fjedre forspændt mod tilspændingsindretningen, hvilket bevirker en tilbagehentningseffekt. De nævnte fjedre er tilsluttet til de viste 15 bremsehalvdele, fx. i punkterne 7.In the known manner, the primary and secondary trays are biased by means of cif not shown biased against the clamping device, which causes a recovery effect. Said springs are connected to the 15 brake halves shown, e.g. in paragraphs 7.
Primærbakken 1 har i den foreliggende udførelse en ledkontur 11, på hvilken en svingstøtte 4 er drejeligt understøttet med sin ledkontur 12. Under indvirkning af den ikke viste fjeder trykker primærbakken 1 via svingstøtten 4 mod de i bremselejepladen fastgjorte anslag 5, 6, 20 hvorhos imidlertid svingstøtten 4 er påvirket af en fjeder 8, som er fastgjort ved bremselejepladen og bibringer svingstøtten et drejningsmoment, som er rettet mod sekundær bakken 2's understøtning 13. Støtteboltene 5, 6 er anbragt på hver sin side af en gennem drejningspunktet 10 forløbende, på forbindelseslinien mellem støtteboltene 5, 6' centre 25 vinkelret linie.In the present embodiment, the primary tray 1 has a hinge contour 11 on which a pivot support 4 is pivotally supported with its hinge contour 12. Under the action of the spring not shown, the primary tray 1 via the swivel support 4 presses against the stops 5, 6, 20 fixed in the brake bearing plate, however, the pivot support 4 is actuated by a spring 8, which is secured to the brake bearing plate and imparts a torque to the pivot support which is directed to the support 13. of the secondary tray 2. The support bolts 5, 6 are arranged on either side of a passage through the pivot point 10. the support bolts 5, 6 'center 25 perpendicular.
Svingstøtten 4 har ud for det indre anslag 5 en kontur 14, som har et forløb, der radialt indefter i forhold til bremsetromlen fjerner sig fra svingstøttens drejningspunkt 10. Det ydre anslag 6 står i indgreb med en i retning mod drejningspunktet 10 tilbagetrukken kontur 15. Un-30 derstøtningspartiet 16 for sekundærbakken 2's understøtning 13 befinder sig på svingstøtten 4 radialt udenfor det ydre anslag 6.The pivot support 4 has a contour 14 next to the inner stop 5, which has a course which radially inwards with respect to the brake drum removes from the pivot support pivot point 10. The outer stop 6 engages a contour 15 retracted towards the pivot point 10. The support part 16 of the secondary tray 2's support 13 is located on the pivot support 4 radially outside the outer stop 6.
3535
DK 153905BDK 153905B
- 4 -- 4 -
Virkemåde:Function:
Bremsning fremadkørsel.Braking forward travel.
Før bremsningen holdes primærbakken 1 og sekundærbakken 2 sammen 5 ved hjælp af en fjeder, som er forbundet med punkterne 7, og står via svingstøtten 4 og fjederen 8 i let forspænding mod hinanden.Prior to braking, the primary tray 1 and the secondary tray 2 are held together 5 by a spring which is connected to the points 7, and is supported by the bend support 4 and the spring 8 in a slight bias.
Ved begyndende bremsning efter aktivering af den ikke viste til-spændingsindretning trykker primærbakken 1 svingstøtten 4 med dennes kontur 14 og konturen 15 mod anslagene 5,6 på bremselejepladen (se teg-10 ningen). Sekundærbakken 2's kraft, som den via sin understøtning 13 overfører til svingstøtten 4's understøtningsparti 16, er ikke i stand til at dreje svingstøtten omkring anslaget 5 mod virkningen af fjederen 8 og det fra primærbakkens støttekraft fremkommende moment.Upon initial braking after activating the clamping device not shown, the primary tray 1 pushes the pivot support 4 with its contour 14 and the contour 15 against the stops 5,6 on the brake bearing plate (see drawing 10). The force of the secondary tray 2, which it transmits via its support 13 to the support portion 16 of the pivot support 4, is not able to turn the pivot support around the stop 5 against the effect of the spring 8 and the torque resulting from the primary support force.
15 Bremsning baglænskørsel.15 Reverse braking.
Ved begyndende bremsning har momentet fra sekundær bakken 2's understøtningskraft, som overføres via understøtningen 13 til svingstøtten 4's understøtningsparti 16, overvægten. Følgelig drejes svingstøtten 4 mod virkningen af fjederen 8 og af det væsentligt formindskede 20 moment fra_primærbakken 1 omkring anslaget 5 og fjerner sig med konturen 15 fra anslaget 6. Sekundær bakken 2 kan således give efter i retning mod primærbakken for den ikke viste tilspændingsindretnings tryk og indstillingsvej og den på sekundærbakken indvirkende resulterende bremsekraft. Der forbliver kun en ringe restbremsemoment for baglæns-25 kørslen med påløbsbremseindretningen.On initial braking, the torque from the supporting force of the secondary tray 2, which is transmitted via the support 13 to the support portion 16 of the swing support 4, is overweight. Accordingly, the pivot support 4 is rotated against the action of the spring 8 and substantially diminished torque from the primary tray 1 around the stop 5 and removes with the contour 15 from the stop 6. Thus, the secondary tray 2 can yield in the direction of the primary tray for the pressure and setting path of the clamping device not shown. and the resulting braking force acting on the secondary tray. There remains only a slight residual braking torque for the reverse travel with the inlet braking device.
Efter løsnelse af tilspændingsindretningen forøges atter afstanden mellem primær bakken 1 og sekundær bakken 2 ved hjælp af fjederen 8 og svingstøtten 4, og der etableres en stilling som den i fig. 1 viste.After loosening the clamping device, the distance between the primary tray 1 and the secondary tray 2 is again increased by the spring 8 and the pivot support 4, and a position such as that in FIG. 1.
Af fig. 2 ses modlejeanordningens kompensationseffekt for slidet 30 på brems ebelægningeme. Svingstøtten 4 får på grund af forskydningen i retning mod brems etromlen 3 andre anlægspunkter på ans lagene 5, 6, hvorved der opnås en større skråstilling for svingstøtten. Afstanden mellem primær bakken 1 og sekundærbakken 2 forøges. Den af sliddet betingede ekstra vej for tilspændingsindretningen formindskes dermed.In FIG. 2 shows the compensation effect of the bearing device for the wear 30 on the brake pads. Due to the displacement in the direction of the brake drum 3, the swing support 4 receives other abutment points on the abutments 5, 6, thereby obtaining a larger inclination position for the swing support. The distance between the primary tray 1 and the secondary tray 2 is increased. The additional path conditional on the tightening device is thereby reduced.
3535
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD22818481A DD158488A3 (en) | 1981-03-11 | 1981-03-11 | COUNTERPIECE ARRANGEMENT FOR INTERIOR BRAKING BRAKES OF LARGEST MOUNTED TRAILERS |
| DD22818481 | 1981-03-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK100482A DK100482A (en) | 1982-09-12 |
| DK153905B true DK153905B (en) | 1988-09-19 |
| DK153905C DK153905C (en) | 1989-01-30 |
Family
ID=5529526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK100482A DK153905C (en) | 1981-03-11 | 1982-03-09 | MOUNTING DEVICE FOR DRUM BRAKE TRACKS IN TRAILERS WITH A BRAKE BRAKE |
Country Status (8)
| Country | Link |
|---|---|
| CS (1) | CS246567B1 (en) |
| DD (1) | DD158488A3 (en) |
| DE (1) | DE3201528C2 (en) |
| DK (1) | DK153905C (en) |
| FR (1) | FR2501814A1 (en) |
| GB (1) | GB2094427B (en) |
| HU (1) | HU188770B (en) |
| NL (1) | NL180397C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2172675B (en) * | 1985-03-20 | 1989-06-21 | Leslie Cyril Chouings | Improvements in trailer brakes |
| DE4208424C2 (en) * | 1992-03-17 | 2000-12-21 | Franz Schlegl | Brake for overrun braked trailers for road vehicles |
| DE4325111A1 (en) * | 1993-07-27 | 1995-02-02 | Gerhard Spaegele | Mechanical release device |
| EP0629534A3 (en) * | 1993-06-16 | 1995-03-15 | Gerhard Spaegele | Mechanical release device. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1484045A (en) * | 1966-06-02 | 1967-06-09 | Girling Ltd | Drum brake improvements |
| DE2161559B2 (en) * | 1971-12-11 | 1976-06-10 | Hahn Fahrzeugbau Gmbh, 7012 Fellbach | SUPPORT DEVICE IN AN INNER SHOE BRAKE |
| GB1493831A (en) * | 1974-02-28 | 1977-11-30 | Chouings L | Brakes |
| GB1586063A (en) * | 1976-09-17 | 1981-03-18 | Chouings L C | Lining wear adjusters for reversing brakes |
-
1981
- 1981-03-11 DD DD22818481A patent/DD158488A3/en unknown
-
1982
- 1982-01-20 DE DE19823201528 patent/DE3201528C2/en not_active Expired
- 1982-01-25 FR FR8201062A patent/FR2501814A1/en active Granted
- 1982-01-29 NL NL8200344A patent/NL180397C/en not_active IP Right Cessation
- 1982-02-02 HU HU31082A patent/HU188770B/en unknown
- 1982-02-04 GB GB8203249A patent/GB2094427B/en not_active Expired
- 1982-02-19 CS CS115882A patent/CS246567B1/en unknown
- 1982-03-09 DK DK100482A patent/DK153905C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL8200344A (en) | 1982-10-01 |
| FR2501814B1 (en) | 1984-12-21 |
| DK153905C (en) | 1989-01-30 |
| DE3201528C2 (en) | 1983-03-31 |
| FR2501814A1 (en) | 1982-09-17 |
| GB2094427A (en) | 1982-09-15 |
| NL180397C (en) | 1987-02-16 |
| NL180397B (en) | 1986-09-16 |
| HU188770B (en) | 1986-05-28 |
| GB2094427B (en) | 1985-03-13 |
| DK100482A (en) | 1982-09-12 |
| CS246567B1 (en) | 1986-10-16 |
| DD158488A3 (en) | 1983-01-19 |
| DE3201528A1 (en) | 1982-09-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |