DK153818B

DK153818B - STEP WAGON

Info

Publication number: DK153818B
Application number: DK156585A
Authority: DK
Inventors: Thorkild Soerensen Post
Original assignee: Thorkild Soerensen Post
Priority date: 1985-04-03
Filing date: 1985-04-03
Publication date: 1988-09-12
Also published as: DK156585A; AU5697386A; EP0216879A1; WO1986005752A1; DK153818C; DK156585D0

Description

Den foreliggende opfindelse angår en trappegående transportvogn af den art, der ved hjælp af mindst ét ro-terbart annragt holdeorgan har kørehjul sætvist anbragt i stjerneagtig konfiguration.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a staircase transport vehicle of the kind having a set wheel mounted in star-like configuration by means of at least one rotatably arranged holding means.

Det er kendt at udforme transportvogne, f.eks. tohjulede sækkevogne, på den måde, at de enkelte sædvanlig kendte kørehjul er erstattet af to eller tre eller flere i det oprindelige hjuls hjulplan i stjerneagtig konfigura-. tion anbragte kørehjul, hvor hvert hjul fortrinsvis har samme diameter som de oprindelige kørehjul. En sådan stjerneagtig hjulkonfiguration er f.eks. beskrevet i beskrivelsen hørende til dansk patentansøgning nr. 2568/82. I denne kendte udformning er holdeorganet, som tilvejebringer den stjerneagtige konfiguration på hvert enkelt af de oprindelige kørehjuls plads, indrettet med en excentrisk anbringelse af en bære- og omdrejningsakse for holdeorganet, således at en drejning af hjulkonfigurationen ikke i sig selv er søgt tvangsmæssigt tilvejebragt på anden vis end såfremt det i en valgt køreretning forreste hjul i en stjerneagtig konfiguration støder mod en forhindring, f. eks. forkanten af en trappe. Ved viderebevægelse af vognen tvinges da holdeorganet til drejning og hermed anbringelse af et næste kørehjul i konfigurationen mod oversiden af trappetrinnet, der udgjorde forhindringen. Ved viderebevægelse fortsætter holdeorganets drejning og ophører, når det nu bageste hjul også hviler mod samme underlagsgflade som det opsvingede kørehjul. Herefter fortsættes kørslen indtil det nu forreste kørehjul i køreretningen møder den næste trappetrinsforhindring, etc. - I beskrivelsen hørende til den samme danske patentansøgning er der også beskrevet en drivmekanisme, hvor drivenergi overføres via en slags indvendig fortandet tandkransdrev til synkron driv-ning af de enkelte kørehjul anbragt i stjerneagtig konfiguration.It is known to design transport vehicles, e.g. two-wheeled baggage vehicles, in that the individual conventionally known driving wheels are replaced by two or three or more of the original wheels' wheel plane in star-like configuration. positioned driving wheels, each wheel preferably having the same diameter as the original driving wheels. Such a star-like wheel configuration is e.g. disclosed in the specification of Danish Patent Application No. 2568/82. In this known embodiment, the retaining means, which provides the star-like configuration at each of the original driving wheels, is provided with an eccentric positioning of a carrier and rotation axis of the retaining means so that a rotation of the wheel configuration is not in itself forcibly provided on other than when in a selected direction of travel the front wheel of a star-like configuration encounters an obstacle, such as the front edge of a staircase. When moving the carriage, the retaining means is then forced to rotate and thereby place a next driving wheel in the configuration towards the upper side of the staircase which constituted the obstacle. Upon further movement the rotation of the retaining member continues and ceases when the now rear wheel also rests on the same support surface as the curved driving wheel. Thereafter the driving is continued until the now front wheel in the direction of travel meets the next stairway obstacle, etc. - The description of the same Danish patent application also discloses a drive mechanism, whereby drive energy is transferred via a kind of internal toothed gear drive for synchronous driving of the individual drive wheels placed in star-like configuration.

Denne kendte udformning lider af en række ulemper. Der køres således på vandret underlag altid med to kørehjul hørende til hver stjerneagtig konfiguration hvilende mod underlaget. Det giver naturligvis problemer ved friktionseffekter mod underlaget ved kørsel omkring skarpe hjørner.This known design suffers from a number of disadvantages. Thus, the horizontal surface is always driven with two wheels for each star-like configuration resting on the surface. Obviously, it causes problems with friction effects against the surface when driving around sharp corners.

Endvidere skal den, der kører med transportvognen, i alt væsentligt selv udøve den kraft, som skal til at få holdeorganet til at dreje sig ved passage af trappetrinsforhindringer .Furthermore, the person traveling with the transport trolley must, in essence, exert himself the force which is required to cause the retaining means to rotate when passing stair barriers.

Endvidere er det forholdsvis let at køre en transportvogn som en sækkevogn på vandret underlag, hvis dette da altså ikke er meget ujævnt, - så drivhjælp af den grund måtte være påkrævet, men den situation er ikke netop den, der er sædvanlig og skal tages hensyn til -, og da man sædvanligvis bruger batteridrevne elektromotorer som drivmiddel kræves der en ret stor batterivægt, som virker til at gøre vognen tungere, hvad der vanskeliggør den manuelt udvirkede drejning af holdeorganet for kørehjulenes stjer-neagtige konfiguration.Furthermore, it is relatively easy to drive a transport trolley like a sack truck on a horizontal surface, if this is not very uneven - so driving assistance for this reason may be required, but the situation is not exactly the usual and must be taken into account to - and since battery powered electric motors are usually used as a propellant, a rather large battery weight is required which acts to make the car heavier, which makes it difficult to manually turn the retaining means for the star-like configuration of the wheels.

Det er den foreliggende opfindelses opgave at fremkomme med en anden udformning af transportvogne med kørehjul i stjerneagtig konfiguration, hvor disse ulemper er undgået, og endda således, at om muligt med samme slut-virkning en nedsat batterikapacitet er opnåelig, og hvor endvidere transportvognen er lettere at håndtere ved passage af forhindringer i form af trapper, og hvor man er mindre afhængig af den fysiske udformning af trappetrinene end det er tilfældet ved den kendte udformning.SUMMARY OF THE INVENTION It is the object of the present invention to provide a different design of vans with star-shaped configurations where these disadvantages have been avoided, and even so that, where possible, with the same final effect, a reduced battery capacity is obtained and whereby the truck is also easier. to cope with the passage of obstacles in the form of stairs, and where one is less dependent on the physical design of the stair steps than is the case with the known design.

Dette er ifølge den foreliggende opfindelse opnået derved, at holdeorganet er drejeligt ved hjælp af et drivorgan, der enten er af selvspærrende art, som f.eks. et drivorgan, der indvirker via et snekkedrev, eller er fastholdelig ved hjælp af en udløselig bremse- eller spærremekanisme i en valgt og opnået stilling efter en drejningsbevægelses ophør.This is achieved in accordance with the present invention in that the holding means is rotatable by means of a drive means which is either self-locking, such as e.g. a drive means acting via a worm drive, or retained by a releasable brake or locking mechanism in a selected and obtained position after the cessation of a pivotal movement.

Ved hjælp af en sådan udformning er samtlige ovennævnte ulemper imødegået på én gang. Transportvognen kan således anvendes manuelt skubbet eller trukket på terræn eller underlag uden forhindringer. Såsnart transportvognens i køreretning forreste hjul af den stjerneagtige konfiguration når en forhindring som et trappetrin aktiveres fortrinsvis manuelt, men naturligvis også eventuelt ved hjælp af et føleorgan, drivorganet til drejning af holdeorganet i fremadretning, således at et kørehjul af den stjerneagtige konfiguration bringes til anlæg mod oversiden af trappetrinnets overflade, hvorefter drivorganet bringes til at fortsætte lidt endnu, indtil det hidtil kørende hjul er drejet op i højde med det hjul, som ligger an mod trappetrinnets overflade, hvorefter transportvognen kan køres videre til næste forhindring som en trappes ,:f. eks. øverste trin oppefra. Her standses transportvognen lige før den nedadførende forhindring, og holdeorganet aktiveres til drejning i fremadretning ved hjælp af drivorganet enten manuelt udløst eller eventuelt ved hjælp af et føleorgan. Herved vil et kørehjul bringes til anlæg mod det altså lavereliggende trappetrins overflade, og drivorganet bringes til at fortsætte, til endnu et kørehjul ligger an, og transportvognen skubbes fremad til næste forhindring, hvadenten denne er opadførende eller nedadførende billedligt udtrykt. Det ses, at i modsætning til den kendte teknik skal der ikke udøves skubbe- eller trækkraft mod transportvognen for at overvinde en forhindring. Tværtimod udfører drivorganet endog den funktion at løfte transportvognen eller sænke transportvognen, således at transportvognen kun skal skubbes eller trækkes i horisontal retning eller i eventuel skrånende retning oven på jævne underlag brugbare hertil.By means of such a design, all the above-mentioned disadvantages have been addressed at once. The truck can thus be used manually pushed or towed on terrain or ground without obstacles. As soon as the front wheel of the transport vehicle in the driving direction of the star-like configuration, an obstacle as a stair step is preferably activated manually, but of course also possibly by means of a sensing means, the drive means for rotating the holding means in the forward direction, so that a driving wheel of the star-like configuration is brought into contact with the the top of the surface of the staircase, after which the driving means is continued for a little while until the wheel so far is turned up to the wheel which abuts the surface of the staircase, after which the truck can be driven to the next obstacle as a staircase: f. eg top step from above. Here, the transport vehicle is stopped just before the downward obstruction and the holding means is activated for forward rotation by means of the drive means either manually triggered or possibly by means of a sensing means. Hereby, a driving wheel will be brought into contact with the surface of the thus-lower staircase, and the driving means will be continued until another driving wheel is in contact, and the transport car will be pushed forward to the next obstacle, whether upward or downward, figuratively expressed. It will be seen that, contrary to the prior art, no pushing or pulling force is exerted on the carriage to overcome an obstacle. On the contrary, the driver even performs the function of lifting the carriage or lowering the carriage, so that the carriage must only be pushed or pulled in a horizontal direction or in any sloping direction on a level surface useful for this purpose.

Ydermere indebærer løsningen ifølge den foreliggende opfindelse den fordel, at ved optagning og afsætning af genstande f.eks. ved en transportvogn udformet som sække- vogn kan drivorganet benyttes til at hæve eller sænke den naturligt tungeste ende af sækkevognen, idet drivorganet bringes til rotation i den ene eller den anden retning, og på grund af spærringen af drivorganet subsidiært holdeorganet i den opnåede drejningsstilling under transporten, så kørsel kan ske alene på to hjul mod fire minimum ved den kendte teknik for en tilsvarende sækkevogn. Herved fås der bedre køreforhold omkring navnlig skarpe hjørner.Furthermore, the solution according to the present invention has the advantage that in picking up and depositing objects e.g. in a transport trolley designed as a sack, the drive means can be used to raise or lower the naturally heaviest end of the sack, the drive means being rotated in one direction or the other and, due to the locking of the drive means, alternatively the holding means in the obtained rotational position below transport, so that driving can be done on two wheels only against four minimum by the prior art for a corresponding baggage truck. This provides better driving conditions around especially sharp corners.

En særlig fordel ved den foreliggende udformning i forhold til den kendte består yderligere i, at transportvognen er lige godt anvendelig til trapper af åben type, som kun omfatter i trappetrinsform anbragte vandrette trappetrinsplader som trapper af mere lukket konstruktion med lodrette forbindelsesplader mellem et område omkring forkanten af en trappetrinsplade og ned mod bagenden af en underliggende trappetrinsplade. Ved den kendte udformning vil der være vanskeligheder ved at få den kendte transportvogn til at fungere ved såvel åbent udformet trappe som, hvor den lodrette nævnte forbindelsesplade mellem trinene ligger bare noget tilbagetrukket, idet det vil være svært, omend ikke umuligt at få holdeorganet drejet i stilling for næste trin, etc. Man vil som anført også have større vanskeligheder ved optagelse og afsætning af varer, der transporteres f.eks. ved en transportvogn af sækkevognstype, hvilken type nok, men ikke udelukkende, vil være en foretrukket udformning til brug ifølge den foreliggende opfindelse.A particular advantage of the present embodiment in relation to the known further consists in the fact that the transport trolley is equally applicable to open-type stairs, which only comprise horizontal stair steps arranged as stairs of a more closed construction with stairs of vertical connection plates between a region around the front edge. of a staircase and down to the rear of an underlying staircase. In the known design, there will be difficulties in making the known transport vehicle operate at both openly designed stairs and where the vertical said connecting plate between the steps is just slightly retracted, since it will be difficult, though not impossible, to have the retaining member rotated. position for the next step, etc. As mentioned, you will also have greater difficulties in picking up and marketing goods transported e.g. in a bag-type truck, which type, though not exclusively, will be a preferred embodiment for use in accordance with the present invention.

En energiforbrugsmæssig gunstig udformning ifølge opfindelsen, og hvor det samtidigt er opnået, at tungere laster, end ellers muligt, lader sig transportere opad trapper, består i, at der er anvendt en drivmotor, der til formålet er effektmæssigt underdimensioneret, men hvor motorens eget-inertimoment og/eller inertimomentet for det foreliggende effektoverførende transmissionsorgan er forøget i forhold til eget-inertimomentet af disse organer krævet til opnåelse af simpel overførsel af det nødvendige drivmoment til drejning af holdeorganet. Årsagen hertil er, at ved passage af en trappe belastes drivorganet ikke jævnt, men ujævnt.An advantageously advantageous design according to the invention, and where it is simultaneously achieved that heavier loads, than otherwise possible, can be transported up stairs, consists in the use of a drive motor which is effectively sub-dimensioned for this purpose, but where the motor's own the moment of inertia and / or the moment of inertia of the present power transmitting transmission means is increased relative to the inertia moment of these means required to obtain simple transfer of the required torque to rotate the retaining means. The reason for this is that when traversing a staircase, the drive means is not loaded evenly but unevenly.

Ved optagelse af tunge laster på en navnlig som sækkevognstype udformet transportvogn ifølge den foreliggende opfindelse anvendes drivorganet til at dreje den stjerneag-tige kørehjulskonfiguration, således at en sådan last vippes bagover og op på sækkevognens laddel. I denne henseende er det en fordel for holde- og drivorganet ifølge opfindelsen, således at disse organer udsættes for mindre påvirkning fra lasten, såfremt den eller de anvendte stjerneagtige konfigurationer af kørehjul hver for sig eller omstilbar omfatter kørehjul af forskellig størrelse. Såfremt ved lastoptagelsen det eller de mindre kørehjul i en sådan stjerneagtig kørehjulskonfiguration befinder sig under vipningsaksen, bliver herved den krævede løftehøjde for lasten formindsket. Respektivt bliver det muligt at løfte eller sænke en sådan last i to tempi, når der kræves videre-kørsel på kørehjul af større størrelse end de mindste kørehjul hørende til den stjerneagtige kørehjulskonfiguration. Disse hjul drejes ind i stilling med drivorganet.In picking up heavy loads on a particular trolley type conveyor of the present invention, the drive means is used to rotate the star-like drive wheel configuration so that such a load is tilted backwards and upwards on the bag part's loading portion. In this regard, it is an advantage to the holding and driving means of the invention that such means are subjected to less impact from the load if the star-like configurations or configurations of driving wheels used separately or adjustably comprise driving wheels of different sizes. If the load pick-up, the smaller wheel (s) in such a star-like wheel configuration is below the tilt axis, the required lifting height for the load is thereby reduced. Respectively, it will be possible to lift or lower such a load at two speeds when driving on larger sized wheels than the smallest wheels of the star-like wheel configuration is required. These wheels are rotated into position with the drive means.

Udførelsesformer ifølge den foreliggende opfindelse beskrives nærmere i det følgende under henvisning til tegningen, hvor:Embodiments of the present invention are described in more detail below with reference to the drawings, in which:

Fig. 1 perspektivisk viser en som sækkevogn indrettet transportvogn, der er udformet ifølge den foreliggende opfindelse, og fig. 2 og 3 viser længdesnit igennem vognen ifølge fig. 1 i to varianter, fig. 4 viser perspektivisk en tredie variant ifølge fig. 1, fig. 5 viser perspektivisk bundplade til udformningen ifølge fig. 4, og fig. 6 viser den nedre halvdel af vognen ifølge fig.FIG. 1 is a perspective view of a transport carriage constructed in accordance with the present invention; 2 and 3 show longitudinal sections through the carriage of FIG. 1 in two variants; FIG. 4 is a perspective view of a third variant of FIG. 1, FIG. 5 shows a perspective bottom plate for the embodiment of FIG. 4, and FIG. 6 shows the lower half of the carriage according to FIG.

4 set fra undersiden og med bundplade ifølge fig. 5 aftaget.4 from below and with the bottom plate of FIG. 5 decreased.

En i fig. 1 og 2 vist transportvogn, der er udformet som en sækkevogn med sidevanger 6, håndtag 7 og mellemstænger 15 mellem sidevangerne 6 såvel som med en fremadrettet sækkeløfteplade 8. Vognen er indrettet med kørehjul 1, 2 og 3, hvoraf kun kørehjulene i vognens ene side er forsynet med henvisningsbetegnelser. Kørehjulene 1, 2 og 3, altså kørehjulene i hver side af vognen, er fastholdt i en stjerneagtig konfiguration ved hjælp af et holdeorgan 4 af stjerneagtig konfiguration. Holdeorganet 4 sidder fastholdt på en gennemgående aksel 5, der er lejret i sidevangerne 6 eller i passende lejebukke, etc. på disse vanger. På akslen 5 sidder der ligeledes fastholdt et snekkehjul 9, som via en i fig. 1 ikke vist snekke 16 drives af en aksel 10, der direkte eller via en passende gearudveksling, eventuelt en gearudveksling med mulighed for skift mellem to eller flere udvekslinger i gearet, såfremt noget ^ —— ΐ'—Λ +-·! i-Psai ao måt-fp rinskes. nemlig hvis der skiftevist skal transporteres meget tunge og meget lette laster med samme vogn, og hvor akslen 10 er drevet af f. eks. en elektromotor 11, der modtager energiforsyning fra batterikasser 12 og 13. Ved hjælp af betjeningsgreb 17 og 18 lader elektromotoren 11 sig sætte i gang og standses og respektivt med det andet betjeningsgreb omstilles til rotation i den ene eller den anden retning.One in FIG. 1 and 2, a transport trolley, which is designed as a sack truck with side rails 6, handles 7 and intermediate rods 15 between the side rails 6 as well as with a forward sack lift plate 8. The trolley is provided with drive wheels 1, 2 and 3, of which only the drive wheels in one side of the truck are provided with reference numerals. The driving wheels 1, 2 and 3, ie the driving wheels on each side of the carriage, are held in a star-like configuration by means of a star-like configuration 4. The retaining means 4 is secured to a through shaft 5 which is mounted in the side arms 6 or in suitable bearing blocks, etc. on these bars. On the shaft 5 there is also secured a worm wheel 9, which via a device shown in FIG. 1 not shown worm 16 is driven by a shaft 10 which directly or via an appropriate gear exchange, optionally a gear exchange with the possibility of shifting between two or more gears in the gear, if something ^ —— ΐ'— Λ + - ·! i-Psai ao way-fp is cleared. namely, if very heavy and very light loads are to be transported alternately with the same carriage, and the shaft 10 is driven by, for example, an electric motor 11, which receives energy supply from battery boxes 12 and 13. By means of control levers 17 and 18, the electric motor 11 start and stop and respectively with the other control handle switch to rotation in one or the other direction.

Vognen bruges på den måde, at motoren aktiveres, således at f.eks. kørehjul 3 og 4 samtidigt hviler mod underlaget, medens vognen manuelt er kippet op til en stilling, hvor sækkeløftepladen 8 's forkant rører underlaget, hvorpå der står sække eller andet med vognen løfteligt gods. Med to kørehjul hvilende mod underlaget er tilvejebragt laveste højde over underlaget af sækkevognens laddele. Står genstandene, der skal flyttes, højere kan holdeorganet 4 ved hjælp af motoren drejes så en passende optagestilling for vognen opnås. Genstanden eller genstandene samles op med vognen, og elektromotoren 11 kan herunder eventuelt aktiveres til samtidig at dreje holdeorganet 4f således at vognens laddele løftes yderligere op. Sækkevognen kippes ned til transportstilling, idet motoren 11 atter aktiveres til en passende stilling er nået, herunder fortrinsvis en stilling, hvor kun et hjulpar hviler mod underlaget, altså med kun et kørehjul hvilende mod underlaget i hver side af sækkevognen. Denne køres herefter af sted, på i og for sig kendt vis, og mødes en trappeforhindring, opad- eller nedadførende, aktiveres som tidligere forklaret motoren 11 til drejning af holdeorganet, så hjulskift finder sted, idet de enkelte trappetrin passeres.The trolley is used in such a way that the motor is activated, so that e.g. drive wheels 3 and 4 are at the same time resting on the ground, while the carriage is manually tilted up to a position where the front of the sack lift plate 8 touches the ground, on which sacks or other with the carriage are liftable goods. With two driving wheels resting against the ground, the lowest height is provided above the ground by the bag parts of the bag. If the objects to be moved are higher, the holding means 4 can be turned by means of the motor so that a suitable position for the carriage is obtained. The object or objects are picked up by the carriage, and the electric motor 11 can optionally be activated to simultaneously rotate the holding means 4f so that the cargo charge portions are raised further. The baggage is tilted down to the transport position, with the motor 11 again activated until a suitable position is reached, including preferably a position in which only one pair of wheels rests against the support, ie with only one driving wheel resting on the support in each side of the baggage. This is then driven, in a manner known per se, and meets a stairway obstruction, upward or downward, as previously explained, the motor 11 is turned to rotate the holding means so that wheel changes occur as the individual steps are passed.

Der kunne udmærket også tænkes en vognudformning, hvor kørehjulene drives via tandhjulsdrev, rem- eller kæde træk fra en drivmotor eller med en særskilt motor i hver enkelt hjuls navdel, etc. Med udformningen ifølge opfindelsen er det imidlertid hensigten, at der ikke skulle være påkrævet direkte drev af kørehjulene ved transportvogne af lille eller mellemstørrelse således som i og for sig tidligere beskrevet. Ved meget svære vogne kan et sådant køre-hjulsdrivorgan dog være påkrævet.It is also possible to imagine a carriage design in which the drive wheels are driven via gear drives, belt or chain pulls from a drive motor or with a separate motor in each wheel hub part, etc. However, with the design according to the invention, it is not intended to be required direct drive of the drive wheels by small or medium-sized transport vehicles as previously described. However, in very heavy vehicles, such a drive wheel drive may be required.

En tænkelig udformning for en transportvogn er en sådan, hvor transportvognen, f.eks. i sækkevognsudformning, bagved laddelen, altså ragende bagud f.eks. hovedsagelig som en bagudrettet forlængelse af sækkeløftepladen. 8, er forsynet med en trædeplade. Denne trædeplade lader sig udnytte ved løft af særlig tunge genstandes ene ende, såsom enden af store papirruller, således at vognen, der i dette tilfælde dog fortrinsvis er udrustet med et drivværk til kørsel, lader sig anvende til navnlig skubning af sådanne tunge genstande langs et underlag. I dette tilfælde kan det af økonomiske årsager endvidere være fordelagtigt, at de i stjerneagtig konfiguration på holdeorganet anbragte kørehjul har uens størrelse, således at det kraftigste hjulsæt, da lader sig anbringe nærmest den tunge genstand. Ved en sådan udformning kunne holdeorganet 4 være indrettet fast arreterbart, således at drivmekanismen til drejning af holdeorganet ved sådan anvendelse,for at undgå en dyr overdimensionering af den af hensyn til så svær belastning, rent faktisk sættes ud af drift under en sådan, altså eventuel særlig arbejdsoperation.A conceivable design for a transport vehicle is one in which the transport vehicle, e.g. in a trolley design, behind the cargo section, thus projecting backwards e.g. mainly as a rearward extension of the sack lift plate. 8, is provided with a tread plate. This tread plate can be utilized by lifting one end of particularly heavy objects, such as the end of large rolls of paper, so that the trolley, which in this case, however, is preferably equipped with a drive for driving, can be used especially for pushing such heavy objects along a underlay. In this case, it may also be advantageous for economic reasons that the star wheels mounted in star-like configuration on the holding means have unequal size, so that the most powerful wheel set can then be placed closest to the heavy object. In such a design, the retaining means 4 could be fixedly adjustable so that the drive mechanism for rotating the retaining member in such use, in order to avoid an expensive oversizing of it for the sake of such a heavy load, is actually put out of operation during such, special work operation.

Ved brug i forbindelse med trapper med særlig lave og brede trin kan den stjerneagtige konfiguration af kørehju-lene bringes til at omfatte kun to hjul på hver side af vognen som en billigere udgave ifølge den foreliggende opfindelse. Konfigurationer med mere end tre hjul, som vist i tegningsfigurerne, kan dog også tænkes at give en fordelagtig løsning, såvel som konfigurationer af uregelmæssig art, men dog fortrinsvis parvis ens på vognens to sider. En udformning med hjulkonfigurationer på mere end to sider kan også tænkes ved vogne, der uden at dreje skal kunne køre i mere end én retning, idet også holdeorganer 8 da er hævelig og sænkelig anbragte. En sådan udformning kunne dog også være tilvejebragt, idet kørehjulene som helhed eller enkeltvist er retningsdrejbart anbragt, så vognen f.eks. ved en trapperepos kan fortsætte sideværts ad næste trappe, eller hvis vognen skal kantes ind på en snæver på- eller aflæsningsplads.When used in connection with stairs with particularly low and wide steps, the star-like configuration of the driving wheels can be made to include only two wheels on each side of the carriage as a cheaper version of the present invention. However, configurations with more than three wheels, as shown in the drawing figures, may also be thought to provide an advantageous solution, as well as configurations of an irregular nature, but preferably in pairs on the two sides of the carriage. A design with wheel configurations on more than two sides can also be conceived by wagons, which must be able to travel in more than one direction without turning, since holding means 8 are then raised and lowered. However, such a design could also be provided, with the driving wheels as a whole or individually rotationally arranged, so that the carriage, e.g. at a staircase can continue laterally on the next staircase, or if the carriage is to be edged into a narrow loading or unloading area.

En bemærkelsesværdig fordel ved transportvogne ifølge den foreliggende opfindelse er, at de er i stand til at passere trapper og dørtrin og forhindringer i terræn og f. eks kantsten med større fart end de kendte uden at vognen udviser for høj egenvægt.A notable advantage of transport vehicles according to the present invention is that they are able to pass stairs and door steps and obstacles in terrain and, for example, curbs at a higher speed than those known without the vehicle exhibiting excessive self-weight.

I denne henseende er det en fordel, såfremt motorens roterende dele udviser højt inertimoment eller et af navnlig de mere hurtigt roterende transmissionselementer udviser højt inertimoment eventuelt er forsynet med et svinghjul. Herved kan motoren dimensioneres for lavere ydelse og dermed udvise lavere egenvægt som helhed samt, såfremt motoren er en elektrisk motor, at motoren udviser lavt strømforbrug ved en given arbejdsspænding. Idet sagen er den, at ved udformninger ifølge den foreliggende opfindelse kræves der kun energitilførsel i en kort periode omkring passage af de enkelte forhindringer. På denne måde fås også en hurtigere forhindringspasseren, idet inertimomentet jo er øjeblikkelig til rådighed som hjælpedrivkraft under passagen. Inden passage af næste forhindring skal rotationshastigheden til klaring af forhindringen dog nås hurtigt nok, så en sikker passeren opnås. Med udformningerne ifølge den foreliggende opfindelse lader dette sig netop realisere har også erfaringen vist. En transportvogn, f.eks. en sækkevogn, udformet på denne måde kan passere en trappe svarende til jævnt gangtempo, medens udformninger ifølge den kendte teknik er flere gange langsommere hertil og er vanskeligere at håndtere iøvrigt.In this regard, it is an advantage if the rotating parts of the motor exhibit a high moment of inertia or one of, in particular, the more rapidly rotating transmission elements, exhibits a high moment of inertia, possibly provided with a flywheel. This allows the motor to be dimensioned for lower performance and thus exhibit lower overall weight as well as, if the motor is an electric motor, that the motor exhibits low power consumption at a given working voltage. As is the case, in embodiments of the present invention, only energy supply is required for a short period around the passage of the individual obstacles. In this way, a faster obstacle pass is also obtained, since the moment of inertia is immediately available as auxiliary driving force during the passage. However, before passing the next obstacle, the rotational speed to clear the obstacle must be reached quickly enough to achieve a safe pass. With the designs of the present invention this is possible to realize, experience has also shown. A transport truck, e.g. a baggage carriage designed in this way can pass a staircase corresponding to a uniform walking pace, while designs according to the prior art are several times slower for this and are more difficult to handle otherwise.

I tegningens fig. 3 er vist en anden sammenstilling af elementerne, hvor disse er anbragt således, at der også behøves et yderligere transmissionselement, f.eks. et kædetræk 19, men hvor de tungere elementer er anbragt tættere ved akslen 5, og hvor kørehjuiene.'-befinder sig helt ind under vognens bagside, så denne i bredderetning er bedre udnyttelig til last end vognen vist i fig. 1. I givet fald kan transmissionselement 19 have foranderligt udvekslingsforhold til ændring af forhindringspassagehastigheden.In the drawing FIG. 3 another arrangement of the elements is shown, where these are arranged so that an additional transmission element, e.g. a chain pull 19, but where the heavier elements are positioned closer to the shaft 5 and where the driving wheels .'- are located completely below the rear of the carriage, so that it is more widely usable for cargo than the carriage shown in fig. 1. Where appropriate, transmission element 19 may have variable interchange ratio to change the obstacle passage rate.

I tegningens fig. 4, 5 og 6 er vist en tredie sammenstilling af elementerne. Ved denne udformning er transportvognen også udformet som en slags sækkevognstype med et sækkelad 8, der er aftageligt og således let kan udskiftes med f.eks. et længere ud ragende sækkelad 8 til f.eks. transport af ølkasser, ligesom ladet 8 på i og for sig kendt vis kan være hængslet fastgjort og være opklappeligt.In the drawing FIG. 4, 5 and 6, a third arrangement of the elements is shown. In this embodiment, the transport trolley is also designed as a kind of trolley type with a sack drawer 8 which is removable and thus easily replaceable with e.g. a further projecting bag 8 for e.g. the transport of beer boxes, like the loaded 8 in a manner known per se, can be hingedly attached and foldable.

Sækkeladet 8 sidder fast på den ydre opadvendende bundflade 68 hørende til en kasse med sider 72. Kassen er nedadtil åben, men er tillukkelig med et påsætteligt nedre låg vist i fig. 5 omfattende dels en plan pladeformet del 74 og en på tværs udragende dækdel 73 til dækning af hjulakselområdet som nærmere beskrevet i det følgende. Fordelen ved denne kasseform er dels ud over beskyttelsen, der er opnået af de enkelte drivelementer hørende til transportvognen, kan den udragende dækpladedel 73 tjener som fodanlæg til afstøtning af vognen ved opvipning af tungere genstande hvilende på ladet 8. Kassen kunne i og for sig være indrettet med mindre dybde end vist i fig. 4, idet en enkelt lignende udragning som 73 da er udformet vendende vinkelret herpå, nemlig til dækning af drivorganet 11, som ligeledes nærmere beskrevet i det følgende.The sack drawer 8 is secured to the outer upwardly facing bottom surface 68 of a box with sides 72. The box is downwardly open, but is closed with an attachable lower lid shown in FIG. 5, including a flat plate-shaped portion 74 and a transversely projecting tire portion 73 to cover the wheel axle area as described in more detail below. The advantage of this box shape is partly in addition to the protection obtained by the individual drive elements of the transport carriage, the protruding cover plate portion 73 can serve as a foot support for pushing the carriage by folding heavier objects resting on the load 8. The box could in itself be arranged with less depth than shown in FIG. 4, in that a single projection similar to 73 is then formed facing perpendicularly thereto, namely to cover the driving means 11, which is also further described in the following.

I fig. 6 er vist kasseformén ifølge fig. 4 set franeden. Et batteri 12 er fastholdt på i og for sig kendt måde med et i vinkelform bukket pladeorgan 72, som fastholder batteriet 12 mod kasseformens bundflade 68. Drivorganet 11, der kan være en elektromotor, driver via en gearkasse 66, der samtidigt bærer drivorganet 11, en dobbelt transmissionskæde 79, hvis udgangskædehjul nær ved et støtteleje 61 sidder fast på akslen 5 bærende holdeorganer 4 i enderne. Lejerne 61 kan f.eks. være i hver to halvparter adskillelige lejer, således at alle roterende dele kan udtages på én gang, når holdeskruer 69, der på én gang fastholder drivorganet 61 til bundfladen 68 og tjener som kædestrammere for transmissionskæden 79, også er fjernede. Herved er opnået en let serviceadgang til de indre dele.In FIG. 6, the box form of FIG. 4 set from the front. A battery 12 is secured in a manner known per se with an angled plate member 72 which holds the battery 12 against the bottom surface 68 of the box form. The drive means 11, which may be an electric motor, drives via a gearbox 66 which simultaneously carries the drive means 11. a dual transmission chain 79, whose output sprocket adjacent to a support bearing 61 is secured to the shaft 5 bearing retaining means 4 at the ends. The bearings 61 can e.g. be separate bearings in each of two halves so that all rotating parts can be removed at once when retaining screws 69, which at one time hold the drive 61 to the bottom surface 68 and serve as chain tensioner for the transmission chain 79, are also removed. This provides easy service access to the inner parts.

71 er f.eks. elektriske kontaktorer og mellemforbin-delseforgreningselementer for den elektriske styring af drivorganet 11.71 is e.g. electrical contactors and interconnection branch elements for the electrical control of the drive 11.

Ud over håndgreb 7 med f.eks. fortrinsvis ved håndgrebene anordnede styrings-omstillingsorganer til styring af drivorganet 11, såsom et frem-tilbage-omstillingsorgan 76 og en start-stop-afbryder 75, er der anbragt et på tværs i forhold til transportvognen forløbende håndgrebsorgan 77. Der muliggør en bekvem én-håndbetjening af transportvognen. Håndgrebsorganet 77 er fortrinsvis udrustet med alene en stop-start-afbryder 75 og er opstående placeret.In addition to handle 7 with e.g. Preferably, control switching means for controlling the drive means 11, such as a forward and reverse switch 76 and a start-stop switch 75, are provided with a handles 77 which extend transversely to the transport carriage. hand control of the truck. The handle means 77 is preferably provided with only a stop-start switch 75 and is positioned upright.

Betjeningsorganerne 75, 76 bør fortrinsvis sidde på ydersiden af disse, idet man ved skub med kroppen mod håndgrebene 7 for at komme omkring et f.eks. særlig snævert hjørneområde i en gang, ad hvilken transportvognen bliver kørt, uforvarende kan betjene drivorganet 11 forkert. Betjeningsorganet 75, 77 muliggør én-håndsbrug af transportvognen .The actuators 75, 76 should preferably sit on the outside thereof, when pushing with the body against the handles 7 to get around e.g. particularly narrow corner area at one time along which the truck is driven may inadvertently operate the drive member 11 incorrectly. The actuator 75, 77 enables one-hand use of the carriage.

Såfremt som antydet dækpladeorganet ifølge fig. 5 som beskrevet ovenfor har et ekstra udragende område til f.eks. dækning af drivorganet 11, kunne kassedybden udformes mindre. På den anden side viser praktisk erfaring, at transportvognen ifølge fig. 4, 5 og 6 ud over at være mere driftssikker på grund af de afdækkende organer også har en udformning, der gør let transport mulig af selv ret tunge genstande, ligesom det er en fordel, at de tunge genstande let kan vippes af ved sideforskydning af dem, således at afog pålæsning er mulig inden for et større, højdeområde end det, der kan nås med en sækketransportvognstype, som vist i fig. 2 og 3. Vognen har også meget let ved at passere dørtrin ud over som ifølge formålet at transportere tungt gods op og ned ad trapper.As indicated by the cover plate means of FIG. 5 as described above has an additional protruding area for e.g. coverage of the drive member 11, the box depth could be designed less. On the other hand, practical experience shows that the carriage of FIG. 4, 5 and 6, in addition to being more reliable because of the covering means, also have a design which allows easy transport of even quite heavy objects, as well as an advantage that the heavy objects can be easily tipped off by lateral displacement of the them, so that loading and unloading is possible within a greater height range than that which can be reached with a bag transport vehicle type, as shown in FIG. 2 and 3. The carriage also has a very easy way of passing door steps in addition to as intended to transport heavy goods up and down stairs.

Ifølge opfindelsen er der opnået en vogn med en håndtagskonfiguration, der er velegnet ved transport af tungt gods, hvis tyngdepunkt ligger langt fra anlægsfladen mod vognen. Drivorganerne kan ligge lavt og vognen er velegnet også til at være indrettet som bårevogn, kørestol samt også til transport af handicapudstyr, hvilket de kendte vogne af denne art ikke lader sig så håndteringsvenligst indrette til heller. Vognen kan i drift indtage en endogså lav hældningsstilling, såvel på trapper som på jævnt terræn.According to the invention, a trolley having a handle configuration suitable for the transport of heavy goods whose center of gravity is far from the abutment surface towards the trolley has been obtained. The drive means can be low and the carriage is also suitable for being used as a stroller, wheelchair as well as for the transport of handicap equipment, which the known carriages of this kind are not so easy to handle either. In operation, the trolley can take an even low slope position, both on stairs and on level terrain.

Claims

A stairway transport vehicle of the kind having by means of at least one rotatably arranged retaining member having wheels set stably in a star-like configuration, characterized in that the retaining means (4) is rotatable by means of a driving means (11) which is either of self-blocking species, such as a drive means acting via a worm drive (16, 9), or retained by a releasable brake or locking mechanism in a selected and obtained position after the cessation of a pivotal movement.

A stairway transport vehicle according to claim 1, characterized in that a driving means, e.g. an electric motor which is effectively under-dimensioned for this purpose, but wherein the motor's own inertia torque and / or inertia torque for the present power transmitting transmission means is increased relative to the intrinsic torque of these bodies required to obtain simple transmission of the required torque to turning the retaining means (4).

A stairway carriage according to claim 1 or 2, characterized in that the star-like configuration (s) of drive wheels (1, 2, 3) separately or adjustably comprise drive wheels (1, 2, 3) of different sizes.

A stairway transport trolley according to claim 1, 2 or 3, wherein the driving means (11) is arranged at the upwardly facing bottom surface (68) in a box-shaped lower part of the transport trolley, which e.g. is of the bag type, characterized in that a double drive chain, connected to one wheel axle bearing (61), drives the output shaft of the drive means (11) with the drive shaft (5) of the holding means (4) and that there are clamping means, e.g. a bolt with associated nut which retains the drive member (11) relative to the bottom surface (68) and serves as a chain tensioner for the transmission chain. SUMMARY A staircase transport vehicle of the kind having a rotatably arranged retaining means has drive wheels set disposed in star-like configurations, wherein the retaining means (4) for a star-like configuration of driving wheels (1, 2, 3) is pivotally arranged and rotatable at using a drive means. (11) which are either self-blocking, such as a drive means acting via a worm drive (9), or retained by a releasable braking or locking mechanism in a selected and obtained position after the cessation of a pivotal movement. In this way, a less energy-intensive design as well as a larger number of stairs suitable for transport vehicles can be obtained in relation to the known transport vehicles of this kind. Furthermore, easier lifting of objects, e.g. up on a baggage carriage designed. (Fig. 1).