DK143746B

DK143746B - FIXING MACHINE FOR A TOUCH DEVICE WITH ROPE, NECESSARY FOR A MULTI-SAILED LIFT FOR VEHICLES

Info

Publication number: DK143746B
Application number: DK564477A
Authority: DK
Inventors: R Schouteteen
Original assignee: Fogautolube Sa
Priority date: 1977-01-11
Filing date: 1977-12-19
Publication date: 1981-10-05
Also published as: FR2376816B1; GB1587361A; FR2376816A1; BE862172A; DK564477A; DE2759085A1; DK143746C; IT1089738B

Description

(19) DANMARK (w . v^Ra,(19) DENMARK (v. Ra,

DIREKTORATET FORDIRECTORATE OF

PATENT- OG VAREMÆRKEVÆSENETTHE PATENT AND TRADEMARKET SYSTEM

(21) Ansøgning nr. 5644/77 {51) int.CI.3 B 66 F 7/02 (22) Indleveringsdag 19· d.ec. 1977 (24) Løbedag 19· &ec. 1577 (41) Aim. tilgængelig 12. jul. 1978 (44) Fremlagt 5- okt. 1981 (86) International ansøgning nr.(21) Application No. 5644/77 {51) int.CI.3 B 66 F 7/02 (22) Submission date 19 · d.ec. 1977 (24) Race day 19 · & ec. 1577 (41) Aim. available July 12. 1978 (44) Presented 5 Oct. 1981 (86) International application no.

(86) International indleveringsdag (85) Videreførelsesdag - (62) Stamansøgning nr. ~(86) International Filing Day (85) Continuation Day - (62) Application No. ~

(30) Prioritet 11. jan. 1977* 7700599, FR(30) Priority Jan 11 1977 * 7700599, FR

(71) Ansøger FQOAT iTOLUBE S.A., 58440 Myennes, FR.(71) Applicant FQOAT iTOLUBE S.A., 58440 Myennes, FR.

(72) Opfinder Robert _Schouteteen, FR.(72) Inventor Robert _Schouteteen, FR.

(74) Fuldmægtig Civilingeniør M. Gregers en.(74) Assistant Civil Engineer M. Gregers one.

(54) Fas thold emekanle me til et løf= teapparat med tove, navnlig til en flersøjlet lift til køre= tøjer.(54) Fas thold emecan me for a lift = rope tea machine, in particular for a multi-column lift for vehicles.

Opfindelsen angår en fastholdemekanisme til et løfteapparat med tove, navnlig til en flersøjlet lift til køretøjer, og af den i krav l's indledning angivne art.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a restraint mechanism for a rope lifting apparatus, in particular to a multi-column lift for vehicles, and of the kind specified in the preamble of claim 1.

Man kender sikkerhedsindretninger, der er monteret på en køretøjslift, som omfatter en platform, der er bestemt til at understøtte et køretøj og er ført på to eller fire søjler, idet den nævnte platform er båret af træktove eller af afbalanceringstove. De ® kendte sikkerhedsindretninger består af spærhager, der er leddet fj? fastgjort til platformen og bestemt til at samarbejde med en tand- ^ stang på hver kolonne, idet spærhagerne er forbundet med et vippe- Ό organ, der under påvirkning af en fjederkraft virker i retning af ^ at bringe de nævnte spærhager i indgreb med tandstængerne, medens ^ fjedervirkningen er ophævet af et føleorgan, som er anbragt på vip- 3 peorganet, og som samarbejder med tovet.It is known to have safety devices mounted on a vehicle lift which comprise a platform intended to support a vehicle and are carried on two or four columns, said platform being carried by tow ropes or balancing ropes. The known safety devices consist of locking hooks that are connected to the spring. attached to the platform and intended to cooperate with a toothed bar on each column, the catches being connected to a tilting means which, under the influence of a spring force, acts in the direction of ^ engaging said catches with the toothed bars; while the spring action is abrogated by a sensing means which is arranged on the flip-flop and which cooperates with the rope.

Med sådanne mekanismer vil spærhagerne, når træktovene er rigtigt spændt, blive holdt fjernt fra tandstængerne, men hvis der 2 143746 sker en formindskelse af spændingen, vil vippeorganet styre et indgreb af spærhagerne i tandstængerne for på den måde at blokere platformen .With such mechanisms, when the tension ropes are properly tensioned, the ratchets will be kept away from the racks, but if the tension is reduced, the rocker will control engagement of the ratchets with the rods to block the platform.

En sådan mekanisme fungerer godt og er f.eks. kendt fra be-5 skrivelsen til fransk patent nr. 1 224 112. De kendte mekanismer har dog den ulempe, at spærhagerne ikke er i permanent indgreb med tandstængerne, og det betyder, at man i tilfælde af et brud på et tov vil få et fald af platformen svarende til den tid, som indgrebet af spærhagerne i tandstængerne kræver.Such a mechanism works well and is e.g. known from the specification of French Patent No. 1 224 112. However, the known mechanisms have the disadvantage that the catches are not permanently engaged with the rods, and this means that in the event of a rupture of a rope a decrease of the platform corresponding to the time required by the interlocking of the ratchets in the rack.

10 Der er tidligere blevet foreslået en sikkerhedsmekanisme i hvilken en spærhage samarbejder permanent med en tandstang, som er anbragt på platformen, men selv om man herved undgår det nævnte fald af platformen, er der den alvorlige ulempe, at denne udførelse ikke byder nogen sikkerhed mod et fald af platformen, hvis der sker et 15 brud på træktovet.10 A safety mechanism has been proposed in the past in which a latch permanently cooperates with a rack mounted on the platform, but although this avoids the said fall of the platform, there is the serious disadvantage that this design offers no security against a fall of the platform if a 15 rupture of the tow rope occurs.

Den foreliggende opfindelse tager sigte på at angive en fastholdemekanisme af den fra beskrivelsen til fransk patent nr.SUMMARY OF THE INVENTION The present invention aims to provide a restraint mechanism thereof from the specification of French patent no.

1 224 112 kendte og i krav l's indledning angivne art, ved hvilken de ovenfor nævnte ulemper er undgået, idet spærhagerne permanent 20 samarbejder med tandstængerne undtagen i det tilfælde, at platformen føres nedefter, hvorved man opnår, at sikkerhedsmekanismen fungerer øjeblikkeligt.1 224 112 known and stated in the preamble of claim 1, in which the above-mentioned drawbacks are avoided, the latches permanently cooperating with the rods except in the case that the platform is moved downwards, thereby ensuring that the safety mechanism operates immediately.

Dette opnås ifølge opfindelsen ved, at fastholdemekanismen er udformet som angivet i krav l's kendetegnende del.This is achieved according to the invention in that the retaining mechanism is designed as defined in the characterizing part of claim 1.

25 Ved denne udformning opnår man, at spærhagerne under den opad gående bevægelse af platformen bliver holdt i indgreb med tandstængerne, hvad der giver en stor sikkerhed, medens ved en nedadbevægel-se af platformen spærhagerne ved hjælp af styreorganet bliver bragt ud af indgreb med tandstængerne. Spærhagerne kan imidlertid aldrig 30 undgå at blive påvirket til spærring af vippeorganet i tilfælde af et brud eller en nedsættelse af spændingen i tovet, takket være ef-tergiveligheden af den elastiske stang, som overfører påvirkningen fra styreorganet til spærhagerne, når disse skal frigive platformens nedadbevægelse.In this embodiment, it is achieved that the catches during the upward movement of the platform are held in engagement with the rods, which provides great security, while in a downward movement of the platform the catches are brought out of engagement with the rods. . However, the catches can never avoid being actuated to lock the rocker in the event of a rupture or reduction of tension in the rope, thanks to the elasticity of the elastic rod which transmits the influence of the control member to the catches to release the downward movement of the platform. .

35 Hensigtsmæssigt kan fastholdemekanismen være udformet som an givet i krav 2. Man opnår herved en god fastholdelse af platformen under alle forhold.Conveniently, the retaining mechanism may be configured as set forth in claim 2. This provides good platform retention under all conditions.

Ved udformning af fastholdemekanismen som angivet i krav 3 opnår man sikkerhed for, at spærhagerne ikke utilsigtet kommer ud af 40 indgreb med tandstangen.By designing the restraint mechanism as set forth in claim 3, it is ensured that the catches do not inadvertently come out of the engagement with the rack.

Ved udformning af fastholdemekanismen som angivet i krav 4 3 143746 opnår man en sikker styring af vinklen og dermed en sikker udløsning, når platformen skal føres nedefter.By designing the retaining mechanism as set forth in claim 4 3 143746, a secure control of the angle and thus a safe release is obtained when the platform is to be moved downwards.

Fastholdemekanismen ifølge opfindelsen forklares nærmere under henvisning til tegningen, på hvilken 5 fig. 1 viser en udførelsesform for en køretøjslift med en fastholdemekanisme ifølge opfindelsen, fig. 2 skematisk og i perspektiv en udførelsesform for fastholdemekanismen, fig. 3 skematisk og i større målestok selve fastholdemeka-10 nismen i stilling til sænkning af platformen, og fig. 4 ligeledes skematisk og i større målestok funktionen af fastholdemekanismen, efter at der er sket et brud på bæretovet til platformen.The retaining mechanism of the invention is explained in greater detail with reference to the drawing, in which: FIG. 1 shows an embodiment of a vehicle lift with a restraint mechanism according to the invention; FIG. 2 is a schematic and perspective view of one embodiment of the retaining mechanism; FIG. 3 schematically and on a larger scale the retaining mechanism itself in position for lowering the platform; and FIG. 4 also schematically and on a larger scale the function of the restraint mechanism after a rupture of the support rope to the platform.

Køretøjsliften i fig. 1 har en platform 1, der er understøt-15 tet af fire træktove 2, der hver især er lejret i en rørformet søjle 3, i hvilken platformen 1 er ført.The vehicle lift in FIG. 1 has a platform 1 supported by four draw ropes 2, each of which is housed in a tubular column 3 into which the platform 1 is guided.

Træktovene 2 er forbundet med et ikke vist apparat til at løfte og sænke platformen 1 efter ønske.The pull ropes 2 are connected to a device not shown to lift and lower the platform 1 as desired.

Hver søjle 3 har en lodret slids 4, i hvilken en af enderne 20 5 på et tværstykke 6 på platformen 1 er ført ind.Each column 3 has a vertical slot 4 into which one of the ends 20 5 of a cross piece 6 of the platform 1 is inserted.

Hver kolonne 3 er forsynet med en serie huller, der danner en tandstang 7, som er parallel med slidsen 4.Each column 3 is provided with a series of holes forming a rack 7 parallel to the slot 4.

På enden 5 af tværstykket 6 er der monteret et vippeorgan 8, der omslutter et rum, i hvilket træktovet 2 kan passere, og vippe-25 organet er drejeligt om en akse 9, idet det nævnte rum indeholder en trisse 10, der trykkes mod træktovet 2 under påvirkning af et fjederorgan 11, der er anbragt mellem vippeorganet 8 og et fast punkt på tværstykket 6.At the end 5 of the cross member 6 is mounted a rocker 8 which encloses a space in which the tow rope 2 can pass and the rocker means is rotatable about an axis 9, said space containing a pulley 10 pressed against the tow rope. 2 under the influence of a spring member 11 disposed between the rocker 8 and a fixed point on the cross member 6.

Fjederorganet 11 virker til at vippe huset om aksen 9, men 30 trissen 10, der samvirker med træktovet 2, vil modsætte sig denne vipning, når træktovet er strammet.The spring member 11 acts to tilt the housing about the axis 9, but the pulley 10, which cooperates with the pull rope 2, will oppose this tilt when the pull rope is tightened.

En spærhage 12 er drejeligt anbragt på yderenden 5 af tværstykket 6 om en akse 13 og er forbundet med vippeorganet 8 ved hjælp af en drivstang 14, hvis ene ende er drejeligt forbundet med vippe-35 organet, medens den anden ende passerer frit gennem et hul, der er anbragt diametralt i en tap 16, som er drejeligt lejret i spærhagen 12, idet den frie ende af drivstangen har en skive, der er bestemt til at ligge an mod tappen 16.A pawl 12 is pivotally disposed on the outer end 5 of the crosspiece 6 about an axis 13 and is connected to the rocker 8 by means of a drive rod 14, one end of which is pivotally connected to the rocker 35 while the other end passes freely through a hole. , which is arranged diametrically in a pin 16 which is pivotally mounted in the catch 12, the free end of the drive rod having a washer intended to abut against the pin 16.

Spærhagen 12 har en tand, der er bestemt til at samarbejde 40 med tandstangen 7 på søjlen 3.The latch 12 has a tooth intended to cooperate 40 with the rack 7 on the column 3.

Spærhagen 12 er forbundet med en anden spærhage 12a, der er 4 t43746 bestemt til at samarbejde med tandstangen på søjlen 3, i hvis slidse den anden ende på tværstykket 6 rager ind, ved hjælp af en stang 20 og et balanceorgan 21, der er drejeligt på en tap 22 på tværstykket 6, og en anden stang 23, som er forbundet med en trekant 24, 5 der atter er forbundet med en stang 25.The latch 12 is connected to a second latch 12a, which is intended to cooperate with the rack of the column 3, in which slot the other end of the cross member 6 projects, by means of a rod 20 and a rotatable balance member 21 on a pin 22 on the cross member 6, and another rod 23 which is connected to a triangle 24, 5 which is again connected to a rod 25.

Andre spærhager 12b og 12c er bestemt til at samarbejde med tandstænger på de to andre søjler og er forbundet indbyrdes ved hjælp af en kinematisk transmission, der er identisk med den, som blev beskrevet ovenfor, og som består af en drivstang 20a, et ba-10 lanceorgan 21a, en stang 23a, en trekant 24a og en stang 25a, idet balanceorganerne 21 og 21a er forbundet stift med hinanden ved hjælp af en koblingsstang 26.Other latches 12b and 12c are intended to cooperate with tooth rods on the other two columns and are interconnected by means of a kinematic transmission identical to that described above and consisting of a drive rod 20a, 10 is a lance member 21a, a rod 23a, a triangle 24a and a rod 25a, the balance means 21 and 21a being rigidly connected to each other by means of a coupling rod 26.

På denne måde vil enhver drejning af den ene af spærhagerne 12 bevirke en bevægelse af alle de andre spærhager af samme stør-15 relse.In this way, any rotation of one of the catches 12 will cause movement of all the other catches of the same size.

Stangen 20 bærer i et punkt ved midten af dens længde en skive 50, mod hvilken en fjeder 51 ligger an, hvis ydre ende samarbejder med tappen 16, idet stangen 20 går diametralt og frit gennem tappen.The rod 20 carries at a point at its center length a disc 50 against which a spring 51 abuts, the outer end of which cooperates with the pin 16, the rod 20 passing diametrically and freely through the pin.

20 Stængerne 20a, 25 og 25a passerer frit gennem tilsvarende tappe, der findes på de tilhørende spærhager, og samarbejder med skiver 50 samt fjedre 51, der er anbragt mellem tappene og skiverne 50.The rods 20a, 25 and 25a pass freely through corresponding pins found on the associated catches and cooperate with washers 50 and springs 51 disposed between the pins and washers 50.

På enden 5 af tværstykket 6 er der drejeligt om en akse 26 25 anbragt en vinkel 56, til hvilken den ene af enderne på et styrekabel 52 er fastgjort, hvilket kabel er ført over trisser 53 og 54 i søjlen 3, og hvis anden ende er fastgjort til den nævnte ende 5 på platformen.On the end 5 of the crosspiece 6 there is pivotally mounted about an axis 26 25 at an angle 56 to which one of the ends of a guide cable 52 is attached, which cable is passed over pulleys 53 and 54 in the column 3 and the other end of which is attached to said end 5 of the platform.

På den tilhørende søjle er der anbragt en vægtstang 45, som 30 er drejelig om en akse 46 og understøtter to trisser 49, der er bestemt til at samarbejde med kablet 52.On the associated column is provided a bar 45 which is rotatable about an axis 46 and supports two pulleys 49 intended to cooperate with the cable 52.

Vinklen 56 er forbundet med balanceorganet 21 ved hjælp af en teleskopisk stang 33, der indeholder et hunparti 34 og et hanparti 35, hvilke partier bærer skiver henholdsvis 36 og 37, mellem 35 hvilke der er anbragt en kompressionsfjeder 38.The angle 56 is connected to the balance member 21 by means of a telescopic rod 33 containing a female portion 34 and a male portion 35, which portions bear discs 36 and 37, respectively, between which is mounted a compression spring 38.

På enden 5 af tværstykket 6 er der anbragt et stop 39, mod hvilket vinklen 56 normalt er trykket ved hjælp af en fjeder 40, der er anbragt mellem et stop 41 og et bryst 43 på en føringsstang 42, der er leddet forbundet med vinklen 56.At the end 5 of the transverse piece 6 is a stop 39 against which the angle 56 is normally pressed by a spring 40 arranged between a stop 41 and a chest 43 on a guide rod 42 connected to the angle 56 .

40 Fjederen 38 skal være kraftigere end fjederen 51, og fjederen 40 skal være kraftigere end fjederen 38, fordi fjederen 40 er bestemt 5 143746 til at danne et organ til at påvirke hele mekanismen. Fjederorganet 11 skal være så kraftigt, at trissen 10 holdes trykket mod tovet 2.The spring 38 must be more powerful than the spring 51, and the spring 40 must be more powerful than the spring 38, because the spring 40 is intended to form a means to actuate the entire mechanism. The spring member 11 must be so strong that the pulley 10 is kept pressed against the rope 2.

Fastholdemekanismen ifølge opfindelsen fungerer som følger: Når platformen hæves, vil spærhagerne, idet de er påvirket 5 af fjederen 51, tendere til at samarbejde med hullerne i tandstængerne 7 og undvige elastisk, hver gang de passerer mellem to huller i den pågældende tandstang. Denne indretning giver stor sikkerhed for, at spærhagerne 12 altid er parat til indgreb.The restraint mechanism of the invention works as follows: As the platform is raised, the pawls, being influenced by the spring 51, tend to cooperate with the holes in the gears 7 and avoid elastics each time they pass between two holes in the respective rack. This device provides great assurance that the catches 12 are always ready for engagement.

For at tillade en sænkning af platformen 1 trykker man på 10 vægtstangen 45 i retning nedad på en sådan måde, at trisserne 49 trykkes mod kablet 52, og der udøves et træk på dette kabel, der derved styrer en drejning af vinklen 56 om sin akse 26 mod virkningen fra fjederen 40, hvad der bevirker, at stangen 33 bliver bevæget til venstre på tegningen. Herved styrer stangen en drejning af 15 balanceorganet 21 på en sådan måde, at drivstangen 20 bevæges til at udøve et træk på spærhagen 12, der derved bringes ud af indgreb med sin tandstang, fig. 3.To allow lowering of the platform 1, the lever 45 is pushed downwardly in such a way that the pulleys 49 are pressed against the cable 52 and a pull is applied to this cable thereby controlling a rotation of the angle 56 about its axis. 26 against the action of the spring 40, causing the rod 33 to be moved to the left of the drawing. Hereby, the rod controls a rotation of the balance member 21 in such a way that the drive rod 20 is moved to exert a pull on the catch 12, which is thereby disengaged with its rack. FIG. Third

Den kraft, der kræves til at forskyde stangen 33, er lille, og på grund af denne manøvre sker der ikke nogen sammentrykning af 20 fjederen 38.The force required to displace the rod 33 is small, and because of this maneuver, no compression of the spring 38 occurs.

Da balanceorgahet 21 styrer de andre spærhager 12a, 12b og 12c, vil disse spærhager samtidig blive bragt ud af indgreb med de tilsvarende tandstænger.As the balance member 21 controls the other catches 12a, 12b and 12c, these catches will simultaneously be brought out of engagement with the corresponding tooth rods.

Bevægelsen af spærhagen 12 har ingen indflydelse på vippe-25 organet 8, idet drivstangen 14 kan glide frit i hullet i tappen 16.The movement of the ratchet 12 has no influence on the tilting member 8, as the drive rod 14 can slide freely in the hole in the pin 16.

Hvis der under sænkningen af platformen forekommer en nedsættelse af spændingen i træktovet 2 eller et brud på træktovet, vil vippeorganet under påvirkning af fjederorganet 11 dreje sig, og drivstangen 14 vil i samarbejde med tappen 16 trykke spærhagen 12 30 hen imod låsestilling, fig. 4.If, during the lowering of the platform, there is a reduction of the tension in the draft rope 2 or a rupture of the draft rope, the rocker means under the influence of the spring means 11 will rotate and the drive rod 14 in cooperation with the pin 16 will push the ratchet 12 30 towards the locking position. 4th

Under denne bevægelse vil stangen 20 under påvirkning af tappen 16 trykke balanceorganet 21 hen imod låsestilling for spærhagen 12, hvilket er muligt takket være den teleskopiske montering af stangen 33. Fjederorganet 11 er kraftigere end fjederen 38, og der-35 for vil balanceorganet 21 trykke hunpartiet 34 ind mod virkningen fra fjederen 38.During this movement, the rod 20, under the influence of pin 16, will push the balance member 21 towards the locking position of the catch 12, which is possible thanks to the telescopic mounting of the rod 33. The spring member 11 is more powerful than the spring 38, and therefore the balance member 21 will press. female portion 34 against the action of spring 38.

I denne stilling af spærhagen er platformen 1 fastholdt, og den kan ikke flyttes.In this position of the ratchet, the platform 1 is retained and it cannot be moved.

Man vil bemærke, at fastholdemekanismen ifølge opfindelsen 40 byder meget stor sikkerhed for, at spærhagerne 12 i en løftet stilling af platformen vil være i en aktiv position, og spærhagerne kanIt will be noted that the retaining mechanism according to the invention 40 offers very great assurance that the catches 12 in an elevated position of the platform will be in an active position and the catches may

Claims

6 1437Λ6, on the other hand, in case of a lowering of the position is easily disengaged, whereby the silk device continues to operate until the tension in the pulling rope 2 is restored. One can replace the variable connection with the spring 38 5 with a device having means for locking the male and female parts 34 and 35 relative to each other, which means can be actuated by a predetermined force effect, i.e., while the locking catch 12 is actuated by the spring member 11, in the event of a rupture of the rope 2.

A retaining mechanism for a rope lifting device, in particular for a multi-column lift for vehicles, comprising a vertically movable platform supported by tow ropes and guided by columns, the mechanism of which has barriers determined for cooperating with upright or pillar shaped toothed rods and connected kinematically with a pivot member mounted pivotally on the platform and having a sensing member cooperating with the pull rope, said pivot member being actuated by a spring which 20 to tilt it towards the tensioned pulley in such a way that, in the event of a break or an abnormal reduction of the tension in the rope, the spring can affect the catches for engagement with the tooth rods, characterized in that the catches (12) are connected to the rocker means. (8) by means allowing a free movement of the pawls (12) from a position in engagement with the respective rack (7) and to a position free of the rack (7), finding auxiliary means (51) for holding the catch (12) pressed into a hole in the rack (7) and all the catches (12) being interconnected by means of a transmission (21, 22, 30 23, 24, 25 which transmission has a telescopic rod (33) which can be guided by a control means to a position where all the catches are guided free of the tooth rods, the rod (33) being adapted to give way to the effect exerted when the rocker means (8) in case of rupture of the pull rope, the catches affect engagement with the rods.

Retaining mechanism according to claim 1, characterized in that the locking catch (12) has a pin (16) through which a hole is diametrically inserted through which a drive rod (14) is connected, which at one end is connected to the rocker. (8), and the other end of which carries a disc cooperating with the protrusion on the ratchet, resting.