NO116688B - - Google Patents
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- Publication number
- NO116688B NO116688B NO162517A NO16251766A NO116688B NO 116688 B NO116688 B NO 116688B NO 162517 A NO162517 A NO 162517A NO 16251766 A NO16251766 A NO 16251766A NO 116688 B NO116688 B NO 116688B
- Authority
- NO
- Norway
- Prior art keywords
- piston
- cylinder
- rod
- jack
- gripping device
- Prior art date
Links
- 238000009415 formwork Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000009194 climbing Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 108091023663 let-7 stem-loop Proteins 0.000 description 1
- 108091063478 let-7-1 stem-loop Proteins 0.000 description 1
- 108091049777 let-7-2 stem-loop Proteins 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
- B66B11/0266—Passive systems
- B66B11/0273—Passive systems acting between car and supporting frame
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
Trykkvæskedonkraft til å forskyve en last langs en stang. Pressurized fluid jack to displace a load along a rod.
Denne oppfinnelse vedrører en trykkvæskedonkraft av den art som er beregnet på å forskyve en last langs en stang, for eksempel å løfte glideforskalinger ved betongstøping. Donkraften inneholder en sylinder med en før-ste gripeanordning og et i sylinderen forskyvbart stempel som er utstyrt med en annen gripeanordning. Gripeanordningene er utfor-met slik at den ene automatisk låses til stangen når den annen beveges og omvendt. Når et flertall slike donkrafter sammen skal løfte en last, for eksempel en glideforskaling, har det vist seg vanskelig å bringe donkraftene til å løfte lasten jevnt. Denne ulempe unngås på en enkel måte ved donkraften ifølge oppfinnelsen, som kjennetegnes ved at det på sylinderen i dennes aksialretning er innstillbart montert et stoppeanslag som rager inn i stemplets bane for innstillbar begrensning av stempelslaget. This invention relates to a pressure fluid jack of the kind intended to displace a load along a rod, for example to lift sliding formwork during concrete casting. The jack contains a cylinder with a first gripping device and a piston displaceable in the cylinder which is equipped with a second gripping device. The gripping devices are designed so that one is automatically locked to the bar when the other is moved and vice versa. When a plurality of such jacks are to lift a load together, for example a sliding formwork, it has proven difficult to get the jacks to lift the load evenly. This disadvantage is avoided in a simple way by the jack according to the invention, which is characterized by the fact that a stop stop is mounted adjustably on the cylinder in its axial direction and protrudes into the path of the piston for adjustable limitation of the piston stroke.
Oppfinnelsen skal beskrives nærmere i det etterfølgende under henvisning til de medføl-gende tegninger, som viser et utførelseseksem-pel, hvori: Fig. 1 viser skjematisk en donkraft ifølge oppfinnelsen, ved løfting av en glideforskaling for betongstøpning. Fig. 2 viser donkraften ifølge fig. 1 i stør-re målestokk, sett fra siden og delvis i snitt. Fig. 3 viser et snitt langs linjen III—III i fig. 2. The invention shall be described in more detail in what follows with reference to the accompanying drawings, which show an exemplary embodiment, in which: Fig. 1 schematically shows a jack according to the invention, when lifting a sliding formwork for concrete casting. Fig. 2 shows the jack according to fig. 1 on a larger scale, seen from the side and partly in section. Fig. 3 shows a section along the line III—III in fig. 2.
Ved det valgte utførelseseksempel anven-des en donkraft 1 for på i og for seg kjent måte å løfte en til betongstøpning beregnet glideforskaling 2 langs en vertikal, sirkelfor-met stang eller et såkalt klatrejern 3. Klatre-jernet 3 som er innstøpt i den ved hjelp av glideforskalingen 2 støpte vegg 4, går sentralt gjennom donkraften 1, og glideforskalingen 2 er på passende måte opphengt på over-siden av en til donkraften hørende sylinder 5, rundt en på sylinderens overside festet sy-lindrisk kappe 6. In the selected design example, a jack 1 is used to lift a sliding formwork 2 intended for concrete casting along a vertical, circular rod or a so-called climbing iron 3 in a manner known per se. The climbing iron 3 which is embedded in it by with the help of the sliding formwork 2 cast wall 4, passes centrally through the jack 1, and the sliding formwork 2 is suitably suspended on the upper side of a cylinder 5 belonging to the jack, around a sy-cylindrical jacket 6 attached to the upper side of the cylinder.
I sylinderen 5 er det et forskyvbart stempel 7 med en hylseformet stempelforlengelse 8, som fra sylinderens 5 overside strekker seg inn i kappen 6. Stemplet 7 har et sentralt hull og stempelforlengelsen 8 er rørformet for derved å slippe gjennom stangen 3 (ikke vist på fig. 2). Kappen 6 har oventil en endevegg 9 med en sentral krave 10, som er innvendig gjenget og opptar en utvendig gjenget hylse 24, som stangen 3 løper fritt gjennom, og som på en måte som beskrives i det etterfølgende tjener som stoppeanslag for begrensning av stemplets 7 bevegelse oppover. Sylinderen 5 har ved sin nedre ende et skrulokk 11, til hvil-ket det er festet en i det etterfølgende beskre-vet gripeanordning med en sentral kanal for gjennomføring av stangen 3. In the cylinder 5 there is a displaceable piston 7 with a sleeve-shaped piston extension 8, which extends from the upper side of the cylinder 5 into the jacket 6. The piston 7 has a central hole and the piston extension 8 is tubular in order to pass through the rod 3 (not shown in fig . 2). The cap 6 has at the top an end wall 9 with a central collar 10, which is internally threaded and occupies an externally threaded sleeve 24, through which the rod 3 runs freely, and which, in a manner described in what follows, serves as a stop stop for limiting the piston's 7 upward movement. At its lower end, the cylinder 5 has a screw cap 11, to which is attached a gripping device described below with a central channel for the passage of the rod 3.
Den i skrulokket 11 festede gripeanordning består av et i et stykke utført, ringformet gripehode 12, hvori det i foreliggende til-felle er anordnet åtte utboringer 13, hvis sen-terakser konvergerer mot stangens 3 lengdeakse i retning oppover, det vil si i donkraftens transportretning. Boringene 13 er stort sett langs hele sin lengde tillukket på alle kanter, men gjennombryter ved den ene enden den flate i gripehodet 12 som begrenser gripehodets sentrale kanal sideveis, samt en endeflate i gripehodet. Boringenes gjennomskjæring i gripehodets endeflate er overdekket med et ringformet lokk 14, som er fastskrudd på gripehodet. I hver boring 13 er innsatt en en-kelt kule 15 og en fjær 16 som ligger an med den ene enden mot kulen 15 og med den annen ende mot et utspring i boringen 13, og presser kulen oppover i boringen, hvorved kulen vil bli holdt i et fast anlegg mot stangén 3 av fjæren. The gripping device fixed in the screw cap 11 consists of a one-piece, ring-shaped gripping head 12, in which in the present case eight bores 13 are arranged, the center axes of which converge towards the longitudinal axis of the rod 3 in the upward direction, i.e. in the transport direction of the jack . The bores 13 are largely closed along their entire length on all sides, but break through at one end the surface in the gripper head 12 which limits the gripper head's central channel laterally, as well as an end face in the gripper head. The cut-through of the bores in the end surface of the gripper head is covered with a ring-shaped cover 14, which is screwed onto the gripper head. In each bore 13 is inserted a single ball 15 and a spring 16, which rests with one end against the ball 15 and with the other end against a projection in the bore 13, and presses the ball upwards in the bore, whereby the ball will be held in a fixed position against the rod 3 of the spring.
På stempelforlengelsens 8 øvre ende er det festet en i kappen 6 bevegelig gripeanordning, On the upper end of the piston extension 8, a gripping device movable in the casing 6 is attached,
av samme art som den ovenfor beskrevne, med i et stykke utført, ringformet gripehode 17, et ringformet lokk 18, oppadkonvergerende bo- of the same type as the one described above, with a one-piece, ring-shaped gripping head 17, a ring-shaped lid 18, upwardly converging bo-
ringer 19, kuler 20 og fjærer 21. rings 19, balls 20 and springs 21.
I sylinderen 5 er det under stemplet 7 an- In the cylinder 5 there is under the piston 7 an-
ordnet en tilbakeføringsfjær 22, som etter stemplets arbeidsslag søker å føre stemplet tilbake opp til dets øvre i fig. 2 viste ende- arranged a return spring 22, which after the working stroke of the piston seeks to bring the piston back up to its upper in fig. 2 showed end-
stilling, noe som bestemmes ved anslag mel- position, which is determined by estimates between
lom det til stemplet festete gripeanordnings- lom the gripping device attached to the piston
lokk 18 og den i lokkets bevegelsesbane inn- lid 18 and it in the lid's path of movement in-
skytende ende av hylsen 24. På gripehodet 17 shooting end of the sleeve 24. On the gripping head 17
er videre festet et par skruer eller mutrer 25, is further attached a pair of screws or nuts 25,
som stikker ut fra kappen 6 gjennom slisser for at man skal kunne se stemplets 7 stilling i sylinderen 5 utenfra. which protrudes from the jacket 6 through slots so that one can see the position of the piston 7 in the cylinder 5 from the outside.
Den beskrevne donkraften arbeider på føl- The described jack works on the following
gende måte: way:
I fig. 2 antas det at stemplet 7 nettopp In fig. 2 it is assumed that the stamp 7 precisely
er ført tilbake til sin øvre endestilling i sy- is brought back to its upper end position in the sewing
linderen 5 og at donkraften med sin last hol- the linder 5 and that the jack with its load holds
des fast på stangen 3 ved at kulene 15 i sy- fixed on the rod 3 by the fact that the balls 15 in the
linderens gripeanordning 12—16 er fastkilt mellom stngen 3 og det veggpartiet av borin- the linder's gripping device 12-16 is wedged between the rod 3 and the wall part of the
gene 13 som ligger motsatt stangen og heller mot stangens lengdeakse. genes 13 which lie opposite the rod and rather towards the longitudinal axis of the rod.
Når nå en trykkvæske, for eksempel When reaching a pressure fluid, for example
trykkolje føres inn gjennom et tilløp 26 i sy- pressure oil is introduced through an inlet 26 in the
linderen 5 mellom stemplets overside og den øvre endeveggen av sylinderen, skyves stemp- the cylinder 5 between the upper side of the piston and the upper end wall of the cylinder, the piston is pushed
let 7 nedover i forhold til sylinderen 5 og stangen 3. Når denne nedoverføring begynner fastkiles imidlertid kulene 20 i gripeanordnin- let 7 downwards in relation to the cylinder 5 and the rod 3. When this downward transfer begins, however, the balls 20 are wedged in the gripping device
gen som er montert på stempelforlengelsen, which is mounted on the piston extension,
mellom stangen og de veggpartier av borin- between the bar and the wall sections of the borin-
gene 19 i gripehodet 17, som ligger motsatt stangen og heller mot stangens lengdeakse, gene 19 in the gripping head 17, which is opposite the bar and rather towards the bar's longitudinal axis,
hvorved stemplets gripeanordning fastlåses på whereby the piston's gripping device is locked on
stangen 3 og stemplet 7 hindres fra å bevege seg nedover i forhold til stangen 3, noe som tillates av sylinderens gripeanordning, mens kulene 15 herved skyves nedover i boringene 13 bort fra sitt kileinngrep med stangen mot fjærkraften i fjærene 16. Under sylinderens 5 the rod 3 and the piston 7 are prevented from moving downwards in relation to the rod 3, which is permitted by the cylinder's gripping device, while the balls 15 are thereby pushed downwards in the bores 13 away from their wedge engagement with the rod against the spring force in the springs 16. Under the cylinder's 5
og dermed glideforskalingens 2 løftebevegelse langs stangen 3 sammenpresser stemplet 7 tilbakeføringsfjæren 22 og legger seg til slutt an mot lokket 14 på sylinderens 5 gripeanord- and thus the sliding formwork 2's lifting movement along the rod 3 compresses the piston 7 the return spring 22 and finally rests against the lid 14 of the cylinder's 5 gripping device
ning. Når stemplet har nådd sitt arbeidsslags nedre endestilling i forhold til sylinderen 5, nothing. When the piston has reached the lower end position of its working stroke in relation to cylinder 5,
slippes trykkvæsken ut av sylinderen. Til å the pressure fluid is released from the cylinder. To
begynne med forsøker herved sylinderen 5 å to begin with, the cylinder 5 tries to
gli nedover langs stangen 3, men denne ned-overbevegelse stanses så godt som umiddelbart slide down along the rod 3, but this down-over movement is stopped almost immediately
ved at kulene 15 i sylinderens gripeanordning fastkiles mot stangen 3 og fastlåser sylinderen til stangen. Tilbakeføringsf jæren 22 presser istedet stemplet 7 oppover med stor kraft, slik at kulene 20 i stemplets gripeanordning frigjø- in that the balls 15 in the cylinder's gripping device are wedged against the rod 3 and lock the cylinder to the rod. The return spring 22 instead pushes the piston 7 upwards with great force, so that the balls 20 in the piston's gripping device release
res fra sitt kileinngrep med stangen og skyver stemplet oppover i sylinderen under utdriv- res from its wedge engagement with the rod and pushes the piston up into the cylinder during
ning av væsken fra sylinderens øvre del. ning of the liquid from the upper part of the cylinder.
Stemplets bevegelse oppover begrenses ved at The upward movement of the piston is limited by
lokket 18 på stemplets gripeanordning legger seg an mot hylsens 24 underste ende. Heretter inntar delene atter stillingen ifølge fig. 2, slik at en ny løfting av sylinderen langs stangen 3 the lid 18 on the piston's gripping device rests against the lower end of the sleeve 24. Hereafter, the parts again take up the position according to fig. 2, so that a new lifting of the cylinder along the rod 3
kan skje ved innføring av trykkvæske gjennom tilløpet 26. can occur by introducing pressurized liquid through the inlet 26.
Ved å skru hylsen 24 mer eller mindre By turning the sleeve 24 more or less
langt inn i kappen 6 kan man regulere stør- far into the jacket 6, you can adjust the
relsen av stemplets 7 slag og derved den strek- the rail of the piston's 7 strokes and thereby the
ning som glideforskalingen 2 løftes ved hver arbeidsoperasjon av donkraften. Denne regu- ning as the sliding formwork 2 is lifted by the jack during each work operation. This regu-
lering kan skje mens donkraften er montert på glideforskalingen i arbeidsstilling. Følge- claying can take place while the jack is mounted on the sliding formwork in working position. Follow-
lig kan man på en enkel måte avpasse stør- in a simple way, you can adjust the size
relsen av et flertall donkrafters løftehøyde slik at donkraftene i fellesskap løfter en i don- the lifting height of a plurality of jacks so that the jacks jointly lift one in
kraftene opphengt glideforskaling en like stor høyde. the forces suspended sliding formwork an equal height.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH497465A CH426147A (en) | 1965-04-07 | 1965-04-07 | Guide device for a housing of an elevator car that is movably supported in a suspension frame |
Publications (1)
Publication Number | Publication Date |
---|---|
NO116688B true NO116688B (en) | 1969-05-05 |
Family
ID=4285761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO162517A NO116688B (en) | 1965-04-07 | 1966-04-06 |
Country Status (9)
Country | Link |
---|---|
US (1) | US3332517A (en) |
BE (1) | BE679115A (en) |
CH (1) | CH426147A (en) |
DK (1) | DK109354C (en) |
ES (1) | ES325172A1 (en) |
FI (1) | FI41445B (en) |
GB (1) | GB1075365A (en) |
NL (1) | NL6604561A (en) |
NO (1) | NO116688B (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5122274B1 (en) * | 1969-07-04 | 1976-07-08 | ||
US3613834A (en) * | 1969-08-28 | 1971-10-19 | Frank Howard Field | Elevator lift |
JPS5344737B2 (en) * | 1972-12-01 | 1978-12-01 | ||
EP0030134B1 (en) * | 1979-11-28 | 1985-05-29 | Otis Elevator Company | Elevator cab load measuring system |
ATE80123T1 (en) * | 1988-07-12 | 1992-09-15 | Inventio Ag | DEVICE FOR ANTI-VIBRATION IN ELEVATOR CABINS. |
FR2629436B1 (en) * | 1989-03-28 | 1990-11-16 | Kone Elevator Gmbh | METHOD FOR CONTROLLING THE MOVEMENT OF AN ELEVATOR CAB ON THE GUIDE RAILS, AND CAB FOR ITS IMPLEMENTATION |
FR2647097B1 (en) * | 1989-05-17 | 1991-08-30 | Otis Elevator Co | CHASSIS SUPPORT FOR ELEVATOR CAB |
US5368132A (en) * | 1993-11-03 | 1994-11-29 | Otis Elevator Company | Suspended elevator cab magnetic guidance to rails |
US5490577A (en) * | 1994-06-22 | 1996-02-13 | Otis Elevator Company | Flexible elevator hitch |
US6815086B2 (en) * | 2001-11-21 | 2004-11-09 | Dana Canada Corporation | Methods for fluxless brazing |
US20060102696A1 (en) | 2001-11-21 | 2006-05-18 | Graham Michael E | Layered products for fluxless brazing of substrates |
US20040038070A1 (en) * | 2001-11-21 | 2004-02-26 | Dockus Kostas F. | Fluxless brazing |
US20040035911A1 (en) * | 2001-11-21 | 2004-02-26 | Dockus Kostas F. | Fluxless brazing |
US20040035910A1 (en) * | 2001-11-21 | 2004-02-26 | Dockus Kostas F. | Low temperature fluxless brazing |
US7451906B2 (en) * | 2001-11-21 | 2008-11-18 | Dana Canada Corporation | Products for use in low temperature fluxless brazing |
EP3176121B1 (en) * | 2015-12-02 | 2018-08-08 | KONE Corporation | An elevator car arrangement and method for dampening vibrations |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2309123A (en) * | 1941-06-06 | 1943-01-26 | Le Roy H Kiesling | Elevator guide means |
US2308210A (en) * | 1942-07-30 | 1943-01-12 | Otis Elevator Co | Guide for elevators |
-
1965
- 1965-04-07 CH CH497465A patent/CH426147A/en unknown
-
1966
- 1966-03-30 FI FI0811/66A patent/FI41445B/fi active
- 1966-04-04 GB GB14967/66A patent/GB1075365A/en not_active Expired
- 1966-04-05 ES ES0325172A patent/ES325172A1/en not_active Expired
- 1966-04-05 NL NL6604561A patent/NL6604561A/xx unknown
- 1966-04-06 NO NO162517A patent/NO116688B/no unknown
- 1966-04-06 DK DK182866AA patent/DK109354C/en active
- 1966-04-06 BE BE679115D patent/BE679115A/xx unknown
- 1966-04-07 US US540903A patent/US3332517A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI41445B (en) | 1969-07-31 |
NL6604561A (en) | 1966-10-10 |
GB1075365A (en) | 1967-07-12 |
US3332517A (en) | 1967-07-25 |
BE679115A (en) | 1966-10-06 |
CH426147A (en) | 1966-12-15 |
ES325172A1 (en) | 1967-04-01 |
DK109354C (en) | 1968-04-16 |
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