SE123346C1

SE123346C1 -

Info

Publication number: SE123346C1
Authority: SE
Publication date: 1948-01-01

Description

Uppfinnare: R. Nilsson. Inventor: R. Nilsson.

Foreliggande uppfinning hanfor sig till sa.- dana lastvaxelanordningar vid fordonsbromsar, sarskilt jarnvagsvagnsbromsar, vid vilka sjalva lastvaxeln bestar av en med en f Orskjutbar stodpunkt samverkande bromsbalans for overforng av bromskraften med foranderligt utvaxlingsforhallande och vid vilka denna bromsbalans intill uppnaendet av ett visst bromsslag fasthalles i en ett relativt lagt utvaxlingsforhallande bestammande vridpunkt medelst Iva samverkande anslag, av vilka det ena ãr anordnat pa bromsbalansen och det andra pa ett stod och av vilka det ena är utbildat till en med en avbojning forsedd rull- eller glidbana for det i form av en mile eller glidsko utbildade andra anslaget, varvid bromsbalansen och det sagda stodet i avseende pa dessa bAda samverkande anslag aro sâ styrda i forhallande till varandra, att den sagda rullen eller glidskon under bromsansattningsrorelsens forlopp fOrflyttar sig utefter den sagda mull- eller glidbanan och nar fram till dennas avbojning vid uppna.endet av ett visst bromsslag. Med andra ord hanfor sig uppfinningen till sadana lastvaxelanordningar, som avses i det svenska patentet nr 116 310. Vid dessa lastvaxelanordningar brukar kolven i en bromscylinder med sin kolvstang angripa vid den ena anden av den med den fOrskjutbara st5dpunkten samverkande bromsbalansen. Uppfinningen forutsatter, att lastvaxelanordningen är utford pa detta brukliga salt och att bromscylindern sasom brukligt innehaller en kolven tillordnad aterforingsfjader. Vidare forutsatter uppfinningen, att det ena av de tva a bromsbalansen och stodet anordnade samverkande anslagen sitter pa en vridbar arm, och Mlles i ett normal-'age av en fjader samt av denna tillates att giva efter for en eventuellt upptradande onormal belastning fran det andra anslaget (jfr det f5rut namnda svenska patentet nr 116 310 och det svenska patentet nr 119 906. Lampligt men ej nod-vandigt är, att sjalva lastvaxeln och bromscylindern samt ett for dessa gemensamt harorgan aro sammanbyggda till en en-het, som medelst barorganet kan fastas pa sin plats undertill t vagnsunderredet, exempelvis sasom angives i de svenska patenten n:ris 117 894 och 120 121. The present invention relates to such load-shifting devices for vehicle brakes, in particular railway car brakes, in which the load-bearing shaft itself consists of a brake balance cooperating with a displaceable stand for transmitting the braking force with variable gear ratio and to which this brake balance is present. a relatively fixed gear ratio defining pivot point by means of IV cooperating stops, one of which is arranged on the brake balance and the other on a stand and one of which is formed into a roller or slideway provided with a deflection for it in the form of a mile or sliding shoe formed the second stop, the brake balance and the said position with respect to these two cooperating stops being so controlled in relation to each other that the said roller or sliding shoe during the course of the braking engagement movement moves along the said ground or sliding path and reaches its deflection at uppna.e of a certain type of brake. In other words, the invention relates to such gearbox devices, as referred to in Swedish Patent No. 116,310. The invention presupposes that the load gear device is challenged on this usual salt and that the brake cylinder, as usual, contains a return spring assigned to the piston. Furthermore, the invention presupposes that one of the two cooperating stops arranged on the brake balance and the stand is located on a rotatable arm, and Mlles in a normal position of a spring and of this is allowed to yield to a possible abnormal load from the other. the grant (cf. the aforementioned Swedish patent no. 116 310 and the Swedish patent no. 119 906. It is appropriate but not necessary that the load shaft and the brake cylinder themselves and a common means for these are assembled into a unit which by means of the bar means can fastened in place under the wagon chassis, for example as stated in the Swedish patents n: ris 117 894 and 120 121.

Uppfinningen bar till generellt andamal att fOrenkla konstruktionen och forbattra funktionen av lastvaxelanordningen och kannetecknas fOr detta generella andamal i forsta hand darav, att den fjader, som hailer det pa i och for sig kant satt pa stodet anordnade rorliga och eftergivliga anslaget i normallaget, utgores av den bromskolven tillordnade aterforingsfjadern i bromscylindern, 'range-nom behovet av en sarskild fjader fOr Milandet av det bemiilda rorliga anslaget i normallaget bortfaller. The general purpose of the invention was to simplify the construction and improve the function of the load-bearing gear device and can be characterized for this general purpose primarily by the fact that the spring, which holds the movable and resilient stop arranged on the perpendicular edge in the normal layer, consists of the brake piston assigned to the feed spring in the brake cylinder, 'range-through the need for a special spring for Milandet of the measured movable stop in the normal layer is eliminated.

Ytterligare fOr uppfinningen utmarkande drag och fi5rdelar framga av efterfoljande beskrivning av en till uppfinningens fortydligande 'raid utforingsform, som askadligg&- res a bifogade ritning. Pa denna visar fig. 1 en delvis sektionerad planvy av lastvaxelanordningen, fig. 2 en vertikal tvarsektion un- gefar efter linjeni fig. 1, fig. 3 i stor- m skala en planvy av en detalj och fig. 4 en tvarsektion av denna detalj efter linjen IV—IV 1 fig. 3. Further features and advantages of the invention will become apparent from the following description of a straightforward embodiment of the invention, which is shown in the accompanying drawing. Fig. 1 shows a partially sectioned plan view of the load shaft device, Fig. 2 a vertical cross section approximately along the line in Fig. 1, Fig. 3 on a large scale a plan view of a detail and Fig. 4 a cross section of this detail along the line IV — IV 1 Fig. 3.

Pa ritningen betecknar 1 bromsbalansen, som samverkar med den forskjutbara stodpunkten, vilken har form av en stOdklack 2, som styres utefter en glidbana 3. Sjalva lastvaxeln, som bestar av bromsbalansen 1 och den utefter glidbanan 3 forskjutbara stodklacken 2, och bromscylindern 4 samt ett far dem gemensamt barorgan 5, vilket är utbildat till holje for lastvaxeln, aro sammanbyggda till en enhet, som medelst barorganet 5 kan fastas pa sin plats undertill it vagnsunderredet. Bromscylindern 4 innehaller bromskolven 6, som ar forsedd med kolvroret 7, vilket skjuter in i det lastvaxeln omgivande holjet och omgiver den med sin inre ande mot bromskolven 6 stodande kolvstangen 8. Denna angriper vid ena anden av bromsbalansen 1, med vilken den Sr f5rbunden medelst en bult 9. Denna ande av bromsbalansen 1 styres darigenom, att den medelst bulten 9 Sr f6rbunden med en styrarm 10, som Sr lagrad vid barorganet 5 medelst en bult 11. Den andra anden av bromsbalansen 1 an- — — griper vid en bromsstang 12, sons är forbunden med bromsbalansen 1 medelst en bult 13 och som tjfinar till overforing av bromskraf- ten exempelvis till den ena av ett par till fordelning av bromskraften at vagnens hada an- dar tjanande utjamningsbalanser (jfr exempelvis det fOrut namnda svenska patentet nr 117 894). In the drawing, 1 denotes the brake balance, which cooperates with the displaceable stand, which is in the form of a support lug 2, which is guided along a slide 3. If they have a common bar member 5, which is formed as a housing for the load shaft, they are assembled into a unit, which by means of the bar member 5 can be fixed in place below the carriage chassis. The brake cylinder 4 contains the brake piston 6, which is provided with the piston tube 7, which projects into the housing surrounding the load shaft and surrounds the piston rod 8 standing with its inner spirit against the brake piston 6. This attacks at one end of the brake balance 1 to a bolt 9. This spirit of the brake balance 1 is controlled in that it is connected by means of the bolt 9 to a guide arm 10, which is mounted to the bar member 5 by means of a bolt 11. The second spirit of the brake balance 1 engages a brake rod 12 , sons is connected to the brake balance 1 by means of a bolt 13 and which acts as a transmission for the braking force, for example to one of a pair for the distribution of the braking force that the carriage had other serving balancing balances (cf. for example the aforementioned Swedish patent no. 117 894 ).

De tvit samverkande anslagen, som tjfina till fasthallning av bromsbalansen 1 i en ett relativt Mgt utvaxlingsfarhallande bestammande vridpunkt intill uppniendet av ett visst bromsslag, utgaras vid den pa ritningen visade utfaringsformen av en medelst en tapp 14 pa balansen 1 lagrad rulle 15 och en med en avbajning forsedd rullbana 16. Denna rullbana 16 fir anordnad a en arm 17, sons fir vridbart lagrad a bfirorganet 5 medelst en tapp 18. Armen 17 ãr forsedd med ett i Yinkel med densamma stain utsprang 19 eller dylikt, med vilket den normalt anligger mot ett dess vridning medurs i fig. 1 begransande stoppanslag 20. Normalt halles armen 17 med utsprfinget 19 i anliggning mot stoppanslaget 20 av en a barorganet 5 medelst en tapp 21 vridbart lagrad, tvaarmad havstang, som med sin ena arm 22 stoder sig snot utspranget 19 och som med sin andra arm 23 bildar stad far den yttre Auden av en kring kolvraret 7 anordnade och av detta styrda kolvaterforingsfladern 24 och saledes paverkas av denna moturs i fig. 1. Lampligen är kolvaterfaringsfjadern 24 inspand mellan kolven 6 och en pa kolvroret 7 forskjutbart anbragt styrhylsa 25, som i sin yttre ande A hada sidor vid diametralt motsatta stallen är forsedd med aron 26 eller dylikt far tappar 27 pa den gaffelformigt utbildade fria anden av armen 23. Kolvraret 7 är lampligen snett avskuret vid yttre anden, sitsom visas vid 28 (fig. 1) for att det ma erbjuda en A. lang styrning som mOjligt for den forskjutbara hylsan 25 utan att komma i *gen for balansen 1 vid bromsning. Lagertapparna 18 och 21 for havstingerna 17, 19 resp. 22, 23 aro lampligen fastsatta vid barorganet 5 medelst en vid delta fastsvetsad eller pa annat lampligt salt fast platta 29 (fig. 3 och 4), som har fare ffistandet av densamma vid barorganet 5 uppborrade fdsthal 30 och 31 far lagertapparna, 18 resp. 21 och som lampligen liven fir forsedd med stoppanslaget 20. Plat-tan 29 kan lampligen liven yarn forsedd med ett ffisthal 32 for en lagertapp 33 for en hairstang 34 (fig. 1), som den forskjutbara stadklacken 2 ãr farbunden med och som ph kfint satt tjfinar till forskjutning av derma utefter glidbanan 3. The two cooperating stops, which serve to maintain the brake balance 1 in a relatively high gear-defining pivot point adjacent to the attainment of a certain brake stroke, are provided in the embodiment shown in the drawing by a roller 15 mounted by means of a pin 14 on the balance 1 and a deflection provided roller conveyor 16. This roller conveyor 16 is arranged on an arm 17, so as to be rotatably mounted on the member 5 by means of a pin 18. The arm 17 is provided with a protrusion 19 or the like in Yinkel with the same stain, with which it normally abuts against a its rotation clockwise in Fig. 1 limiting stop stop 20. Normally the arm 17 with the projection 19 is held in abutment against the stop stop 20 by a bar member 5 by means of a pin 21 rotatably mounted, heated sea rod, which with its one arm 22 stands snot projection 19 and which with its second arm 23 forms a city, the outer Auden is formed by a piston liner surface 24 arranged and controlled around the piston 7 and is thus affected by this Counterclockwise, the piston experience spring 24 is clamped between the piston 6 and a guide sleeve 25 slidably mounted on the piston tube 7, which in its outer spirit A had sides at diametrically opposite positions are provided with aron 26 or the like. free spirit of the arm 23. The piston 7 is suitably obliquely cut off at the outer spirit, the seat shown at 28 (fig. 1) in order to offer an A. long guide as possible for the displaceable sleeve 25 without getting in the way of the balance 1 during braking. The bearing pins 18 and 21 for the sea urchins 17, 19 resp. 22, 23 are suitably fastened to the bar member 5 by means of a plate 29 welded to the bar member (Figs. 3 and 4) which is welded to the delta, which has the risk of being fastened to the bar member 5 and 31 at the bar member 5 by the bearing pins, 18 and 18, respectively. 21 and which is suitably provided with the stop 20. set tjfinar to displace derma along the slide 3.

Under bromsansattningsrorelsens farlopp, da bromskolven 6 ror sig utat i broinscylindern 4, vrider sig bromsbalansen 1 till en barjan kring den av armen 17 medelst rullbanan 16 fasthallna rullen 15, under det att denna ror sig utefter rullbanan 16 fram till dennas avbojning, vilken nAs vid ett visst bromsslag. Under tiden installes stodklacken 2 utefter glidbanan 3 i ett mot fordonsbelastningen svarande Idge, som stodklacken 2 alltsa har uppnatt, cla rullen 15 passerar forbi rullbanans 16 aybojning och tillater bromsbalansen 1 att lagga sig an mot stodklacken 2. Normalt, d. v. s. om bromsblockspelrummen yid borjan av bromsansattningsrorelsen voro normala, uppstar ej bromsspanning i bromsstangsystemet, forran rullen 15 passe-rat rullbanans 16 avbajning saint bromsbalansen 1 lagt sig an mot stodklacken 2 och vrider sig kring denna i stallet for kring rullen 15. Om bromsblockspelrummen vid barjan av bromsansattningsrorelsen voro far sma eller om bromsansattningsrarelsen eljest av nagon anledning rater ett onormalt mot-stand, innan rullen 15 passerat rullbanans 16 aybojning, s:a att rullbanan 16 utsattes for en ()normal belastning frail rullen 15, giver rullbanan 16 efter for denna onormala belastning genom att havstangen 17, 19 vrider sig moturs i fig. 1 under vridning av haystangen 22, 23 medurs i fig. 1 mot verkan av kolvaterfOringsfjadern 24. During the course of the brake actuation movement, when the brake piston 6 moves outwards in the bridge cylinder 4, the brake balance 1 rotates to a bar around the roller 15 held by the arm 17 by the roller track 16, while it moves along the roller track 16 to its deflection, which a certain brake stroke. Meanwhile, the stand heel 2 is installed along the slide 3 in an Idge corresponding to the vehicle load, which the stand heel 2 has thus achieved, cla the roller 15 passes past the aybojning of the roller track 16 and allows the brake balance 1 to abut against the stand heel 2. Normally, ie if the brake pad play the brake actuation movements were normal, no brake tension arises in the brake rod system, before the roller 15 passed the deflection of the roller conveyor 16 the saint brake balance 1 rested against the stud heel 2 and rotates around it instead of around the roller 15. if the brake actuator otherwise for some reason develops an abnormal resistance, before the roller 15 has passed the bending of the roller conveyor 16, so that the roller conveyor 16 is subjected to a () normal load from the roller 15, the roller conveyor 16 yields to this abnormal load by the sea rod 17 , 19 rotates counterclockwise in Fig. 1 while rotating the haystack 22, 23 medu rs in Fig. 1 against the action of the piston casing spring 24.

Den av kolvaterforingsfjddern 24 pa armen 23 utovade kraften dr minst i barjan av bromsansattningsrorelsen och tilltager med bromsslaget och kompenserar darigenom helt eller delvis den okning, som det av rullens 15 tryck mot rullbanan 16 pa armen 17 kring dess vridtapp 18 utOvade vridmomentet under bromsansattningsrarelsen under* som foljd av den med rullens 15 forflyttning utefter rullbanan 16 akande momentarmen hos detta vridmoment. Salunda motverkas en icke onskvard variation med bromsslaget av storleken av den belastning frail rullen 15, for vilken rullbanan 16 giver efter. Ytterligare en icke ovasentlig fardel hos uppfinningen Jigger dari, att den som styrning for kolvroret 7 verkande styrhylsan 25 har frihet att vrida sig kring tapparna 27, sa att nagon bandning och dfirav foljande troggang melIan kolvroret och dess styrning ej kan uppsta. Styrhylsan 25 styres i sidled av armen 23 medelst dennas i styrhylsans aron 26 ingripande tappar 27, och genom att dessa tappar 27 samverka med ovre och undre vaggarna det av barorganet 5 bildade holjet far lastvfixeln, befrias havstangens 22, 23 lagring fran bandningspakanningar. Genom att vridtapparna 18 och 21 samt stoppanslaget 20 aro anordnade pa den gemensamma sarskilda fastplattan 29, underlattas uppnhendet av Onskvard noggrannhet betraffande deras in-hordes lagen. The force exerted by the piston feed spring 24 on the arm 23 is at least at the beginning of the braking movement and increases with the braking stroke, thereby compensating in whole or in part the increase which the pressure of the roller 15 against the roller 16 on the arm 17 around its pivot 18 exerts during the braking. as a result of the torque arm of this torque moving with the roller 15 along the roller track 16. Salunda counteracts an undesirable variation with the braking stroke of the magnitude of the load from the roller 15, for which the roller track 16 yields. A further not insignificant advantage of the invention is that the guide sleeve 25 acting as a guide for the piston tube 7 has freedom to rotate around the pins 27, so that no banding and consequent trough passage between the piston tube and its guide can not arise. The guide sleeve 25 is guided laterally by the arm 23 by means of its pins 27 engaging in the guide sleeve aron 26, and by these pins 27 cooperating with the upper and lower cradles the casing formed by the bar member 5 is released, the bearing of the sea rod 22, 23 is freed from banding gaskets. Because the pivot pins 18 and 21 as well as the stop stop 20 are arranged on the common special fixed plate 29, the acquisition of Onskvard's accuracy regarding their in-law is facilitated.

Claims

Patent claim:

1. Load-switching device for vehicle brakes, separate rail car brakes, the load shift itself consists of a brake balance cooperating with a displaceable point and the piston in a brake cylinder, which contains a piston associated with the return spring, with its piston this until adjacent to a certain brake stroke is held in a relatively strong gear ratio determining pivot point by means of two cooperating stops, one of which is arranged on the brake balance and the other on a support and one of which is formed into a roller provided with an aybojning. or sliding path for it in the form of a roller or sliding shoe to challenge the second stop, wherein the brake balance and the said position with respect to these had cooperating stops are controlled in relation to each other, that the said roller or sliding shoe during the braking movement moves along the said the roller coaster or slide and reaches its ayb ojning in the attainment of a certain brake stroke, and varYid one of the said stops is neatly arranged, e.g. sits on a rotatable arm, and is driven in a normal position by a spring and by this is allowed to yield to a possible abnormal load from the second stop, characterized by the fact that the spring, which holds it on itself, sat on the movable and resilient abutment (16) arranged in the standard layer (5) is formed by the brake piston (6) assigned to the brake spring (6) in the brake cylinder (4).

Cargo gear device according to claim 1, characterized in that part in the form of a roller track (16) provided with a deflection for co-operation with the roller (15) mounted on the brake balance (1) challenges the stop formed by a rotatable arm (17) and that it is arranged on the post (5) and in its normal position is held against a stop stop (20) of the colyliter liner spring (24) limiting its rotation in one direction by means of a lever (22, 23) arranged on the post (5), between and the piston (6) on which the feedback feeder (24) is assigned thereto acts.

3. The cargo gear device according to claims 1 and 2, wherein the cargo shaft and the brake cylinder itself and a common bar-member for these, which form a housing for the cargo shaft, are assembled into a unit fixed in place by the bar member in the carriage chassis. the rotatable arm (17) provided with the roller conveyor (16) and the rotating spring (24) which, by means of the piston return spring (24) in the normal layer holding the haystack (22, 23), are arranged and stored next to the bar member (5). biIdade h8ljet for loadvaxeln (1, 2).

Cargo shaft device according to claims 1-3, characterized in that the arm (17) has a projection (19) or the like arranged at an angle thereto, with which it normally steel itself against the stop (20) and against which it is like a heated sea rod. challenge the sea rod (22, 23) stands with its one arm (22), that the other arm (23) of this sea rod in its free spirit Sr fork-shaped and forms stood for a guide sleeve (7) arranged on a piston (6) (25) at two diametrically opposite sides the stables (26) are grazed on it, and that the piston liner spring (24) is clamped between the piston (6) and the casing arranged on the carbon tube and, like the delta in the housing surrounding the load shaft (1, 2), inserting guide sleeve (25).

Load-bearing device according to claims 1-4, characterized in that the guide sleeve (25) arranged on the piston tube (7) at the cavity projecting into the housing (1, 2) which projects into the load-bearing shaft (1, 2) is provided with broil (26) or the like. , with which it so stands against pins (27) on the fork-shaped free spirit of the sea rod arm (23), that the guide sleeve (25) is freely rotatable about these pins (27).

6. Load shaft device according to claims 1-5, characterized in that the hay rod (22, 23) by means of the pins (27) cooperates with the shaft and lower cradles surrounding the load shaft in and for freeing the hay rod bearing from banding gaskets.

7. Load shaft device according to claims 1-6, characterized in that the piston tube (7) at the duct projecting into the housing of the load shaft (1, 2) is obliquely cut off (28).

Device according to claims 1-7, characterized in that the arm (17) and the haystack (22, 23) are mounted by means of pins (18 and 21, respectively), fixed in a plate which is common to them, especially to the bar member (5). (29), which is provided with the stop stop (20). Stockholm 1918. Kungl. Boktr. P. A. Aorstedt & Sinn '460080