SE463889B - DEVICE AT THE CAMERA STAND - Google Patents
DEVICE AT THE CAMERA STANDInfo
- Publication number
- SE463889B SE463889B SE8903727A SE8903727A SE463889B SE 463889 B SE463889 B SE 463889B SE 8903727 A SE8903727 A SE 8903727A SE 8903727 A SE8903727 A SE 8903727A SE 463889 B SE463889 B SE 463889B
- Authority
- SE
- Sweden
- Prior art keywords
- wheels
- camera
- carriage
- counterweight
- spring
- Prior art date
Links
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/048—Mobile camera platform
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M2200/00—Details of stands or supports
- F16M2200/04—Balancing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Bridges Or Land Bridges (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Handcart (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Description
463 889 hjul undvek alla spel, skulle till följd av den ovannämn- da måttoleransen hos lâdbalken hjulen under vagnens åk- ningsrörelse momentant bromsas genom klämverkan. Detta skulle resultera i en ojämn och ryckig rörelse hos kame- ravagnen, vilket inte kan tillåtas. 463 889 wheels avoided all play, due to the above-mentioned dimensional tolerance of the box beam, the wheels during the carriage's riding movement would be momentarily braked by squeezing. This would result in an uneven and jerky movement of the camera trolley, which cannot be allowed.
Ett annat problem härrör från det faktum, att motvikts- vagnens hjul för att kunna ge en mjuk och i möjligaste mån ljudlös gång utförs i ett relativt mjukt plastmateri- al. Här skall inskjutas att motviktsvagnen, vars vikt gi- vetvis alltid skall vara lika med kameravagnens inklusive den av denna uppburna kamerans vikt, kan väga upp till 18 kg. När anordningen inte används, förvaras den liggan- de. De mjuka hjulen hos motviktsvagnen kan då vid sina anliggningsytor mot lådbalkens innervägg till följd av det höga yttrycket deformeras till orund form. Även om denna deformation till sin natur är elastisk, är förhål- landena sådana, att det tar en oacceptabelt läng tid, cirka 3-4 timmar, innan hjulen âterfått sin cirkulära form. AV denna anledning skall vid förvaring balken läggas uppochned. Den av motviktsvagnens tyngd alstrade tryck- kraften mot balkens innervägg kommer då att tas upp via de hjul, som normalt befinner sig i vagnens övre parti. Även de deformeras såsom nyss sagts, men eftersom i an- ordningens omvända användningsläge dessa hjul inte anlig- ger mot balkens taksida utan har ett spel gentemot denna, får denna deformation ingen störande inverkan.Another problem stems from the fact that the wheels of the counterweight trolley are made of a relatively soft plastic material in order to be able to provide a smooth and as quiet sound as possible. It should be added here that the counterweight trolley, the weight of which must of course always be equal to that of the camera trolley, including that of the camera supported by this camera, can weigh up to 18 kg. When the device is not in use, it is stored horizontally. The soft wheels of the counterweight trolley can then be deformed into a round shape at their abutment surfaces against the inner wall of the box beam as a result of the high surface pressure. Although this deformation is elastic in nature, the conditions are such that it takes an unacceptably long time, about 3-4 hours, before the wheels regain their circular shape. For this reason, when storing, the beam must be laid upside down. The compressive force generated by the weight of the counterweight trolley against the inner wall of the beam will then be absorbed via the wheels, which are normally located in the upper part of the trolley. They are also deformed, as has just been said, but since in the reverse position of use of the device these wheels do not abut against the roof side of the beam but have a play opposite it, this deformation has no disturbing effect.
Alla dessa problem har enligt uppfinningens huvudsakliga kännetecken lösts därigenom, att motviktsvagnen har åtmin- stone tre hjulpar, varvid de båda hjulen i varje par be- finner sig intill var sin av deras gemensamma axels ändar samt en fjäder strävar att förskjuta dem ifrån varandra, och av att hjulen är anordnade att kunna avrullas mot bal- kens innervägg, dels med sina mantelytor mot balkens hori- sontella väggar, dels med sina snett, företrädesvis i 450, 463 889 avfasade hörnpartier mot därmed parallella hörnpartier hos balken.All these problems have been solved according to the main features of the invention in that the counterweight carriage has at least three pairs of wheels, the two wheels in each pair being located next to each of the ends of their common shaft and a spring striving to displace them from each other, and by the fact that the wheels are arranged to be able to be unrolled against the inner wall of the beam, partly with their circumferential surfaces against the horizontal walls of the beam, partly with their oblique, preferably bevelled corner portions towards 450 parallel corner portions of the beam.
En utföringsform av uppfinningen beskrivs nedan med hän- visning till ritningen, som visar en tvärsektion genom an- ordningens lâdbalk och genom den inuti denna befintliga motviktsvagnen.An embodiment of the invention is described below with reference to the drawing, which shows a cross section through the box beam of the device and through the counterweight trolley existing inside it.
Med 1 har betecknats lådbalken, som här i tvärsektion är väsentligen kvadratisk och vid vartdera av de fyra hörnen har utvändiga profillister 2 och 3. De övre profillisterna är avsedda för fastsättning av räls för kameravagnen, me- dan de undre listerna 3 är avsedda för anslutning av en eller flera fästplattor, som i sin tur fästs vid stativ.Denoted by 1 is the box beam, which here in cross section is substantially square and at each of the four corners has external profile strips 2 and 3. The upper profile strips are intended for fastening rails for the camera trolley, while the lower strips 3 are intended for connection of one or more mounting plates, which in turn are attached to a stand.
Den här icke visade motvikten befinner sig inuti ett höl- je 4, vilket samtidigt bildar motviktsvagnens chassi. Vag- nen har hjulpar upptill och nedtill - ritningen visar ett övre och ett undre hjulpar med de båda till höger belägna hjulen i tvärsektion.This counterweight, not shown, is located inside a housing 4, which at the same time forms the chassis of the counterweight trolley. The trolley has pairs of wheels at the top and bottom - the drawing shows an upper and a lower pair of wheels with the two wheels located on the right in cross section.
Det undre hjulparet består av två hjul 5 och 6, som uppbärs av en gemensam axel 7. Denna har en axiell borrning, in- uti vilken befinner sig en tryckfjäder 8, som via en kula trycker mot insidan av hjulets 6 gavelvägg. Kulan har be- tecknats 9. Fjädern strävar alltså att i axialriktningen hålla hjulen 5 och 6 ifrån varandra. Ritningen utvisar att varje hjul har formen av en relativt bred cylindrisk rulle, vars ytterkant är snett avfasad, i detta fall med en vin- kel av cirka 45°. Detta avfasade parti har betecknats med 10. Det övre hjulparet är utfört principiellt på samma sätt, enda skillnaden är att, såsom redan nämnts, det finns ett spel mellan de båda övre hjulens mantelytor och den in- tilliggande balkväggens insida.The lower pair of wheels consists of two wheels 5 and 6, which are supported by a common shaft 7. This has an axial bore, inside which is a compression spring 8, which presses against the inside of the end wall of the wheel 6 via a ball. The ball has been designated 9. The spring thus strives to keep the wheels 5 and 6 apart in the axial direction. The drawing shows that each wheel has the shape of a relatively wide cylindrical roller, the outer edge of which is bevelled, in this case at an angle of about 45 °. This chamfered portion has been denoted by 10. The upper wheel pair is designed in principle in the same way, the only difference being that, as already mentioned, there is a play between the mantle surfaces of the two upper wheels and the inside of the adjacent beam wall.
När vid användning av anordningen kameravagnen förskjuts och härigenom motviktsvagnen förskjuts i motsatt riktning, 463 889 4 kommer dennas tyngdkraft att huvudsakligen tas upp av de undre hjulen 5 och 6 - det skall dock här erinras om att varje motviktsvagn normalt har två eller flera undre hjulpar. Fjädern 8 pressar som nämnts hjulen 5 och 6 axi- ellt utåt ifrån varandra, så att dessa båda hjul kommer att anligga dels med sina mantelytor mot insidan 11 av balkens undre väggparti, dels med sina avfasade hörnparti- er mot en härmed parallell väggyta 12 hos balken. De övre hjulen anligger i detta läge inte mot balkens ovansida.When using the device the camera carriage is displaced and thereby the counterweight carriage is displaced in the opposite direction, its gravity will be mainly absorbed by the lower wheels 5 and 6 - it should be remembered here, however, that each counterweight carriage normally has two or more lower wheel pairs. As mentioned, the spring 8 presses the wheels 5 and 6 axially outwards from each other, so that these two wheels will abut partly with their mantle surfaces against the inside 11 of the lower wall portion of the beam, partly with their chamfered corner portions against a parallel wall surface 12 thereof. beams. The upper wheels in this position do not abut against the top of the beam.
Däremot medför fjäderkraften att deras avfasade hörnpartier på samma sätt som för det undre hjulparet hålls i anligg- ning mot de härmed parallella innerväggarna hos balkens hörnpartier. Resultatet blir att,oavsett de mâttavvikelser vilka till följd av de ovannämnda tillverkningstoleranserna föreligger i såväl horisontell som i vertikal riktning hos balken, samtliga hjul i varje hjulpar alltid kommer att under vagnens passage inuti balken ha kontakt med dennas insida. Denna kontakt i fyra punkter räknat i sektions- planet och i fler punkter räknat i balkens längdriktning medför att motviktsvagnen kommer att förflyttas ljudlöst och med samma motstånd mot förskjutningsrörelsen hela vä- gen, dvs man undviker såväl störande ljud som ryckvis för- flyttning.On the other hand, the spring force means that their chamfered corner portions are kept in abutment with the corresponding inner walls of the corner portions of the beam in the same way as for the lower pair of wheels. The result is that, regardless of the dimensional deviations which, as a result of the above-mentioned manufacturing tolerances, exist in both the horizontal and vertical directions of the beam, all wheels in each wheel pair will always have contact with the inside of the wagon inside the beam. This contact in four points calculated in the sectional plane and in more points calculated in the longitudinal direction of the beam means that the counterweight trolley will be moved silently and with the same resistance to the displacement movement all the way, ie both disturbing noise and jerky movement is avoided.
Claims (2)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8903727A SE463889B (en) | 1989-11-07 | 1989-11-07 | DEVICE AT THE CAMERA STAND |
| EP19900916842 EP0534968A1 (en) | 1989-11-07 | 1990-11-07 | A camera support device |
| PCT/SE1990/000724 WO1991006802A1 (en) | 1989-11-07 | 1990-11-07 | A camera support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8903727A SE463889B (en) | 1989-11-07 | 1989-11-07 | DEVICE AT THE CAMERA STAND |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8903727D0 SE8903727D0 (en) | 1989-11-07 |
| SE463889B true SE463889B (en) | 1991-02-04 |
| SE8903727A SE8903727A (en) | 1991-02-04 |
Family
ID=20377404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8903727A SE463889B (en) | 1989-11-07 | 1989-11-07 | DEVICE AT THE CAMERA STAND |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0534968A1 (en) |
| SE (1) | SE463889B (en) |
| WO (1) | WO1991006802A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA11298C2 (en) * | 1994-04-29 | 1996-12-25 | Анатолій Якимович Кокуш | jib operator's crane |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2359915A1 (en) * | 1972-12-07 | 1974-06-12 | Philips Nv | TELESCOPIC SUPPORT MECHANISM |
| DE3334428A1 (en) * | 1983-09-23 | 1985-04-11 | Hans H. 5000 Köln Heller | Carriage with a camera |
| SE455772B (en) * | 1985-06-04 | 1988-08-08 | Asea Ab | DEVICE FOR THE BALANCING OF AN INDUSTRIAL BOOT ARM SYSTEM |
-
1989
- 1989-11-07 SE SE8903727A patent/SE463889B/en not_active IP Right Cessation
-
1990
- 1990-11-07 EP EP19900916842 patent/EP0534968A1/en not_active Withdrawn
- 1990-11-07 WO PCT/SE1990/000724 patent/WO1991006802A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8903727D0 (en) | 1989-11-07 |
| WO1991006802A1 (en) | 1991-05-16 |
| EP0534968A1 (en) | 1993-04-07 |
| SE8903727A (en) | 1991-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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