DK154519B - SELF-LOADING MAN-HOLE COVER - Google Patents
SELF-LOADING MAN-HOLE COVER Download PDFInfo
- Publication number
- DK154519B DK154519B DK460886A DK460886A DK154519B DK 154519 B DK154519 B DK 154519B DK 460886 A DK460886 A DK 460886A DK 460886 A DK460886 A DK 460886A DK 154519 B DK154519 B DK 154519B
- Authority
- DK
- Denmark
- Prior art keywords
- cover
- manhole
- underside
- locking
- frame
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1427—Locking devices
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Motor Or Generator Frames (AREA)
Description
Opfindelsen angår et selvlåsende mandehulsdæksel afden i krav l's indledning angivne art.The invention relates to a self-locking manhole cover of the kind specified in the preamble of claim 1.
Opfindelsen angår både store og små mandehulsdæksler,som automatisk fastlåses, når de placeres i mandehuls-karmen, og som ikke alene er beregnet til konventionellekommunale mandehuller til inspektion af nedlagte lednin¬ger, især spildevands- og vandledninger, men som erberegnet til enhver type mandehuller, f.eks. til septic-tanke og brønde.The invention relates to both large and small manhole covers, which are automatically locked when placed in the manhole frame, and which are not only intended for conventional municipal manholes for inspection of closed pipes, especially wastewater and water pipes, but which are calculated for any type of manholes , eg. for septic tanks and wells.
Store mandehulsdæksler er sædvanligvis fremstillet afstøbejern og er i sig selv så tunge, at deres vægt ale¬ne normalt vil forhindre, at de bliver åbnet af uauto¬riserede personer eller vippet eller suget op af storekøretøjer eller rensemaskiner, som passerer hen overdækslerne.Large manhole covers are usually made of cast iron and are in themselves so heavy that their weight alone will normally prevent them from being opened by unauthorized persons or tilted or sucked up by large vehicles or cleaning machines passing over the covers.
Ved små mandehulsdæksler er det desuden kendt at forøgevægten ved anvendelse af betonvægte for herved at van¬skeliggøre åbningen af dækslet. Anvendes imidlertidpassende værktøjer, såsom brækjern eller løftestænger,kan selv tunge dæksler ikke desto mindre skubbes ellerbrækkes op af uautoriserede personer. For at undgå det¬te er der udviklet metoder, hvor dækslet fastlåses \)edhjælp af kæder. Kæder som låseorganer til mandehuls¬dæksler kendes således fra beskrivelsen til det schwei¬ziske patent nr. 448 917 og det norske fremlæggelsesskriftnr. 145 927. Anvendelse af specialværktøjer til fjernelseaf dækslet fra mandehullet er ligeledes kendt. Såledeskendes fra beskrivelsen til det schweiziske patent nr.In addition, in small manhole covers, it is known to increase the weight by using concrete weights to make the opening of the cover difficult. However, if appropriate tools are used, such as frag iron or levers, even heavy covers can nevertheless be pushed or broken by unauthorized persons. In order to avoid this, methods have been developed in which the cover is locked \) ed by chains. Chains as locking means for manhole covers are thus known from the specification of the Swiss patent no. 448 917 and the Norwegian disclosure no. 145 927. The use of special tools for removing the manhole cover is also known. Thus, from the description to the Swiss patent no.
565 906 og offentliggørelsesskriftet DE nr. 2 713 595løftekroge, som er beregnet til at indgribe i løftehulleri dækslet med henblik på at løfte eller bevæge dette.565 906 and publication specification DE No. 2 713 595 lifting hooks, which are intended to engage the lifting hole cover to lift or move it.
Fra det svenske fremlæggelsesskrift nr 436 050 kendeset mandehulsdæksel, som har et kryds bestående af fire afstivnings flanger eller -ribber fastgjort til dæksletsunderside, idet hver af disse afstivningsflanger strækkersig fra midten af dækslets underside ud mod dets peri¬feri. Ved den ene ende af afstivningsflangerne er dis¬se forsynet med en hageknast, som indgriber neden underen flange, som er udformet på en mandehulsring (mande-hulskarm), hvorpå dækslet hviler. I hovedsagen diame¬tralt modsat hageknasten har dækslet ved sin periferien hage til indgreb under en fjedrende stang, som for¬løber langs en korde i mandehulsringen og er fastgjortmed sine ender til denne. En stang kan føres ind igen¬nem en over den fjedrende stang indrettet åbning i dæks¬let og bøje stangen bagud, således at hagen frigøresfra sit indgreb neden under den fjedrende stang.From Swedish Patent Specification No. 436,050 manhole cover is known which has a cross consisting of four stiffening flanges or ribs attached to the underside of the cover, each of these stiffening flanges extending from the center of the underside of the cover to its periphery. At one end of the stiffening flanges, this is provided with a gardener, which engages below the flange, which is formed on a manhole ring (manhole frame) on which the cover rests. Essentially diametrically opposite to the gardener, the cover at its periphery has a hook for engagement under a resilient bar which extends along a chord in the manhole ring and is secured with its ends to it. A rod can be inserted through an opening arranged above the resilient rod in the cover and bend the rod backwards so that the chin is released from its engagement below the resilient rod.
Fra beskrivelsen til den britiske patentansøgning nr.From the specification to British patent application no.
2 085 946 kendes et mandehulsdæksel, som kan fastlåsestil en bæreramme ved hjælp af et fjedrende bøjeligtbånd, som ved den ene ende er fastgjort til karmensunderside, og som har en fri ende, som rager ud gennemen bred slids i en reces i rammen, hvorved denne frieende af båndet bliver fastlåst i rammen. Båndet kanfrigøres fra sin låseposition ved at indføre en nøglegennem et hul i dækslets overflade, således at nøglenindgriber med båndet på dækslets underside. Når nøglendrejes, vil båndet blive bøjet i en plan parallel meddækslets plan, hvorved båndets frie ende frigøres frarecessen i karmen, da den frie ende under påvirkningaf nøglen bøjes ud til siden i en plan parallel meddækslets underside og hen mod slidsens anden ende, hvor¬efter dækslet kan løftes op.No. 2 085 946 discloses a manhole cover which can be secured to a support frame by means of a resilient flexible strap which is attached at one end to the bottom of the frame and which has a free end protruding through a wide slot in a recess in the frame, releasing the tape gets locked in the frame. The belt can be released from its locking position by inserting a key through a hole in the cover surface so that the key engages with the belt on the underside of the cover. When key-turned, the belt will be bent in a plane parallel to the plane of the cover, thereby releasing the free end of the belt from the frame in the frame, as the free end, under the influence of the key, is bent sideways in a plane parallel to the underside of the cover and toward the other end of the slot. the cover can be lifted.
De fra svensk fremlæggelsesskrift nr 436 050 og britiskpatentansøgning nr. 2 085 946 kendte dæksler og hertilhørende låsesystemer kan kun funktionere som tilsigtet,når dækslet er placeret i en bestemt position ved an- bringelse i mandehulskarmen.The known covers and the locking systems of the Swedish Patent Application No. 436,050 and British Patent Application No. 2 085 946 can only function as intended when the cover is placed in a certain position by placement in the manhole frame.
Det er formålet med opfindelsen at anvise et selvlåsen¬de mandehulsdæksel af den indledningsvis nævnte art,som bedre end hidtil kendt kan anbringes i en mandehuls-karm under opnåelse af en selvlåsende effekt, uden atdækslet herved behøver at blive placeret i en bestemtposition i mandehulskarmen, og som samtidigt er for¬svarligt sikret mod at blive åbnet af uautoriseredepersoner eller mod at blive flyttet eller suget op afstore køretøjer eller fejemaskiner, som passerer henover dækslet. Endvidere kan mandehulsdækslet let åbnesaf en person, som er fortrolig med de selvlåsende orga¬ners funktion, uden at denne person hertil behøver atanvende specielt indrettede værktøjer.SUMMARY OF THE INVENTION It is an object of the invention to provide a self-locking manhole cover of the kind mentioned earlier which can be better than hitherto known to be placed in a manhole frame, in order to achieve a self-locking effect, without the cover thereby having to be placed in a specific position in the manhole frame, and which at the same time is responsibly secured against being opened by unauthorized persons or against being moved or sucked up by large vehicles or sweepers passing over the cover. Furthermore, the manhole cover can easily be opened by a person who is familiar with the function of the self-locking organs without having to use specially designed tools for this purpose.
Opfindelsen angår således et selvlåsende mandehulsdæk¬sel med på undersiden anbragte afstivningsribber oget låseorgan, som er beregnet til at indgribe nedenunder en flange på en mandehulskarm, når dækslet pla¬ceres i denne, og som kan udløses fra sin låsepositionved mod virkningen af en fjederkraft, hvormed det fast¬holdes under flangen, at blive påvirket af et værktøj,som er ført ind gennem en åbning i mandehulsdækslet.Mandehulsdækslet ifølge opfindelsen er ejendommeligtved, at låseorganet udgøres af en fremspringende knast,som er fastgjort til en fjedrende arm, som igen er fast¬gjort til undersiden af dækslet, og som forløber paral¬lelt med dettes plan og i låseposition desuden i detvæsentlige parallelt med en del af dækslets periferiog nær ved denne, og ved at dækslet på sin undersidehar mindst ét yderligere låseorgan, som er beregnettil at indgribe neden under mandehulskarmens flange.The invention thus relates to a self-locking manhole cover with a stiffening rib located on the underside and a locking means which is intended to engage a flange on a manhole frame when the cover is placed therein and which can be released from its locking position by the action of a spring force. by holding it under the flange to be affected by a tool inserted through an opening in the manhole cover. The manhole cover according to the invention is peculiar in that the locking means is constituted by a protruding cam which is secured to a resilient arm which is in turn affixed to the underside of the cover, which runs parallel to its plane and in the locking position in addition substantially substantially to a portion of the periphery and proximity thereof, and that the cover on its underside has at least one additional locking means which is intended to: engage below the flange of the manhole frame.
På grund af, at låseorganet omfatter den fjedrende arm,som i dækslets låseposition forløber parallelt med endel af dækslets periferi nær ved denne, vil låseknasten,som ved dækslets nedpresning i karmen kommer i berøringmed dennes flange, presse den fjedrende arm indad, såledesat låget glider på plads, og den fjedrende arm vil dernæstpresse låseknasten tilbage igen, så den kommer ind underkarmens flange, og det yderligere låseorgan vil samtidigttilsvarende komme ind under karmens flange, såledesat dækslet på to sider er forsvarligt fastlåst mod util¬sigtet at blive vippet op eller på anden måde flyttet.Because the locking member comprises the resilient arm extending in the locking position of the cover parallel to one of the periphery of the cover close to it, the locking knob which, when pressed by the cover into the frame, comes into contact with its flange, presses the resilient arm inward as the lid slides in place, and the resilient arm will then push the locking knob back again so that it enters the flange of the lower frame, and the additional locking means will simultaneously also fit under the flange of the frame, so that the cover on two sides is securely locked against unintentional tilting up or on otherwise moved.
Da karmen eller dennes flange desuden ikke er udstyretmed specielle indretninger, som det er hensigten, atlåseorganerne skal samvirke med, kan dækslet læggesned i karmen i en vilkårlig position, hvor den for dækslettilsigtede låseeffekt opnås. Dækslet kan på enkel mådevippes op ved at stikke et passende opbrækningsværktøj,f.eks. et brækjern, ned i den åbning, som er udspareti mandehulsdækslet på samme sted langs dettes periferi,som låseorganet forløber på undersiden af dækslet, nårdette befinder sig i sin låsestilling. Når opbræknings-værktøj'et lægges an mod den øverste kant af karmensflange og vippes i retning mod karmens øverste kantog ind under dækslet, vil den fjedrende arm blive pres¬set ind under dækslet, samtidigt med at dette vippesop, og låseknasten derved løftes fri af sit indgrebmed karmens flange.Furthermore, since the frame or its flange is not equipped with special devices with which the locking means are intended to cooperate, the cover can be folded into the frame in any position where the cover-effect locking effect is obtained. The cover can easily be tilted open by inserting a suitable breaking tool, e.g. a fracture iron, down into the opening cut into the manhole cover at the same location along its periphery as the locking member extends to the underside of the cover when in its locking position. When the breaking tool is applied to the upper edge of the casing flange and tilted in the direction towards the upper edge of the casing under the cover, the resilient arm will be pressed under the cover, at the same time as this flip-flop, thereby lifting the locking box off its engagement with the flange of the casing.
Fordelagtige udførelsesformer ifølge opfindelsen erangivet i underkravene. Det er således særdeles fordel¬agtigt set ud fra et produktionsmæssigt synspunkt, atden fjedrende arm fastgøres til en af afstivningsribberneved fortrinsvis at blive støbt ud i ét med denne, d.v.s.at hele dækslet med tilhørende låseorganer støbes ién operation. For at opnå en fuldstændig låsning af af dækslet er det nødvendigt, at dette er fastlåst påto sider. Dækslet omfatter derfor et yderligere låseorgan,og fordelagtige udførelsesformer for dette er angiveti kravene 4-6. For så sikkert som muligt at hindre enutilsigtet åbning af dækslet er det fordelagtigt, atlåseorganerne fortrinsvis er anbragt på undersiden aflåget og fortrinsvis på modstående sider af dette. Dervedvil der - for runde dækslers vedkommende - blot væreen del af omkredsen på 180°, som ingen låseanordninghar, medens en i forhold hertil større del af omkredsenville være uden låseanordning, såfremt de to låseorganerikke havde været anbragt i hovedsagen på modståendesider af dækslet. Dette kan imidlertid på sin undersideogså være forsynet med mere end to låseorganer til yder¬ligere sikring af dækslets låsning, såfremt det må be¬frygtes, at dækslet bliver udsat for meget stærke kræfter,som ellers kunne føre til, at det ville blive vippetop. Ved at lade afstivningsribberne stråle radialt udefterfra centrum mod periferien på undersiden af dæksletopnås en meget effektiv afstivning af dette, samt storvalgfrihed til at anbringe låseorganerne i tilknytningtil afstivningsribberne. Når dækslet lægges ned i karmen,er det af stor betydning, at det let kan komme på pladsi denne under låsningen af dækslet. For lettere at fådækslet til at glide ned i karmen er det fordelagtigt,at låseknasten er kileformet og strækker sig skråt ned-og indefter mod den nederste kant af henholdsvis defjedrende arme eller en af de afstivningsribber, hvortilden er fastgjort. Når dækslet placeres i karmen, vilden kileformede låseknast blive presset indefter fradækslets periferi i retning bort fra flangekanten ogdermed også skyde den fjedrende arm, som låseknastensidder på, indefter fra dækslets periferi, indtil denkileformede låseknast er kommet forbi karmflangens øver¬ste kant, hvorefter låseknasten vil smække ind under denne kant som følge af det tryk, som den fjedrendearm udøver mod låseknasten.Advantageous embodiments of the invention are set forth in the subclaims. Thus, it is particularly advantageous from a production point of view that the resilient arm is attached to one of the stiffening ribs by preferably being cast integrally therewith, i.e., the entire cover with associated locking means is cast in one operation. In order to achieve complete locking of the cover, it is necessary that this is locked on both sides. The cover therefore comprises an additional locking means, and advantageous embodiments thereof are set forth in claims 4-6. In order to prevent unintentional opening of the cover as safely as possible, it is advantageous that the locking means are preferably arranged on the underside of the cover and preferably on opposite sides thereof. Therefore, in the case of round covers, only a portion of the circumference of 180 °, which has no locking device, would be present, while a relatively larger part of the circumference would be without locking device if the two locking means had been arranged substantially on opposite sides of the cover. However, this can also, on its underside, be provided with more than two locking means to further secure the cover locking, if it is to be feared that the cover will be subjected to very strong forces which could otherwise cause it to tip. By allowing the stiffening ribs to radiate radially outwards from the center towards the periphery on the underside of the cover top, a very effective stiffening of this is achieved, as well as the freedom of choice to place the locking means in connection with the stiffening ribs. When the cover is placed in the frame, it is of great importance that it can easily be put into place during the locking of the cover. To facilitate the foot cover for sliding into the frame, it is advantageous for the locking cushion to be wedge-shaped and extend obliquely downwards and inwardly toward the lower edge of the resilient arms or one of the stiffening ribs to which the fire is attached. When the cover is placed in the frame, the wild wedge-shaped locking knuckle is pressed along the periphery of the cover in the direction away from the flange edge, and also pushing the resilient arm on which the locking knob is inserted, from the periphery of the cover until the wedge-shaped locking knuckle has passed the upper edge of the frame flange. slack under this edge as a result of the pressure exerted by the spring arm against the locking knob.
Opfindelsen beskrives nedenfor under henvisning tiltegningen, hvor fig. 1 viser et vertikalt snit gennem et dæksel ifølgeopfindelsen med et tilhørende mandehulskarmsystem, hvordækslet er blevet anbragt i position på mandehulskar-mens indre anlægsflade, fig. 2 det i fig. 1 viste dæksel med tilhørende mande-hulskarm, delvis i snit efter linien A-A i fig. 1, fig. 3 det i fig. 1 viste dæksel med tilhørende mande-hulskarm og med en anden udførelsesform for hjælpelåse-organer på undersiden af dækslet, fig. 4 det i fig. 3 viste dæksel med tilhørende mande-hulskarm delvis i snit efter linien A-A i fig. 3, fig. 5 det i fig. 1 viste dæksel med tilhørende mande-hulskarm og med en yderligere udførelsesform for ethjælpelåseorgan på undersiden af dækslet, og fig. 6 det i fig. 3 viste dæksel med tilhørende mande-hulskarm, delvis i snit efter linien A-A i fig. 5.The invention is described below with reference to the accompanying drawing, in which fig. 1 shows a vertical section through a cover according to the invention with a corresponding manhole frame system, the cover having been placed in position on the inner abutment surface of the manhole sleeve; FIG. 2 shows the embodiment of FIG. 1 with associated man-hollow frame, partly in section along line A-A in FIG. 1, FIG. 3 shows the embodiment of FIG. 1 with associated manhole cover and with another embodiment of auxiliary locking means on the underside of the cover; FIG. 4 shows the embodiment of FIG. 3, with the associated man-hole frame partially in section along the line A-A in FIG. 3, FIG. 5 shows the embodiment of FIG. 1 with an associated man-hole frame and with a further embodiment of an auxiliary locking member on the underside of the cover; and FIG. 6 shows the embodiment of FIG. 3 with associated man-hole frame, partly in section along the line A-A in FIG. 5th
Det i fig. 1 viste dæksel og mandehulskarmsystem om¬fatter en karm 1 med en anlægsflade 3 til et dæksel4, og en flange eller afsats 2, som er udformet umid¬delbart neden under karmen l's anlægsflade 3. Dækslet4 er på sin underside forsynet med radiale afstivnings-ribber 17, 18 og i den ene side af dækslet har det enåbning 15. Mandehulskarmens anlægsflade 3 ender ind¬adtil i en kant 16. En fjedrende arm 5 er fastgjort til en af afstiv/ningsribberne 8 (fig. 2). Den fjedren¬de arm er fortrinsvis blevet sammenstøbt med ribben,men kan imidlertid også fastgøres til ribben på andremåder, f.eks. ved hjælp af en gevindsamling. Ved endenaf armen 5 er der anbragt en knast 6, som i figurener vist i form af et kiledannet legeme, hvis oversidekommer til at indgribe neden under den indre cirkulæreflange eller afsats 2, når dækslet 4 er blevet anbragti mandehulskarmen 1. Knasten 6 vil herved fastlåse dæks¬let 4 sikkert under afsatsen 2 og forhindre, at dæksletløftes op i denne side. Med henblik på at fastlåse dæks¬let 4 ved den modsatte side er der her indrettet entilsvarende knast 7, som er fastgjort til en fjedrendearm 9, som igen er fastgjort, fortrinsvis ved faststøb¬ning, til en afstivningsribbe 10 (fig. 2). Denne knast7's indgribningsflade vil på tilsvarende måde indgribeneden under den indre cirkulære afsats 2, når dæksleter blevet anbragt i mandehulskarmen 1. Herved vil dæks¬let 4 være fastlåst i to positioner langs dets periferiog således være sikret mod utilsigtet at blive vippetop af mandehulskarmen. På grund af denne dobbelte fast¬låsning af mandehulsdækslet mod'utilsigtet at blivevippet op er det desuden muligt at gøre dækslet lette¬re, end det ellers ville have været tilfældet, og dæks¬let er derfor lettere at håndtere, samtidigt med atdet dog alligevel er forsvarligt sikret mod at bliveåbnet af uautoriserede personer eller mod at blive vip¬pet eller suget op af store køretøjer eller fejemaski-ner, som passerer hen over dækslet.The FIG. 1 cover and manhole frame system comprises a frame 1 having a abutment surface 3 for a cover4, and a flange or ledge 2 formed immediately below the abutment surface 3 of the frame 1. The cover4 is provided with radial stiffening ribs on its underside. 17, 18 and on one side of the cover it has one opening 15. The abutment face 3 of the manhole frame ends inwardly at an edge 16. A resilient arm 5 is attached to one of the stiffening ribs 8 (Fig. 2). Preferably, the resilient arm has been molded to the rib, but can also be attached to the rib in other ways, e.g. using a thread collection. At the end of the arm 5 is provided a cam 6, as shown in the figures in the form of a wedge-shaped body, the upper side of which will engage below the inner circular flange or ledge 2 when the cover 4 has been placed in the manhole frame 1. The cam 6 will thereby lock cover 4 securely under ledge 2 and prevent the cover from lifting up on this side. In order to lock the cover 4 on the opposite side, there is provided a corresponding cam 7, which is secured to a spring gutter 9, which is again secured, preferably by casting, to a stiffening rib 10 (Fig. 2). The engaging surface of this cam 7 will similarly engage the bottom of the inner circular ledge 2 when cover slots have been placed in the manhole frame 1. Hereby, the cover 4 will be locked in two positions along its periphery and thus secured against inadvertent tilting of the manhole frame. Furthermore, due to this double locking of the manhole cover inadvertently being flipped up, it is possible to make the cover easier than it would otherwise have been, and the cover is therefore easier to handle, while still being able to handle it. is securely secured against being opened by unauthorized persons or from being tilted or sucked up by large vehicles or sweepers passing over the cover.
Når dækslet 4 skal frigøres fra sin låste position imandehulskarmen 1, føres en lang stiv del 14, f.eks.et brækjern ind igennem åbningen 15, således at bræk¬jernets spids kommer til at indgribe mellem anlægsfla¬den 3's kant 16 og den fjedrende arm 5. Ued at bøjebrækjernet 14 ind mod kanten 16 presses den fjedrende arm 5 indefter, således at knasten 6 trækkes ud af sinlåseposition under afsatsen 2. En yderligere vippebevæ¬gelse af brækjernet 14, som hviler mod kanten 16, villøsne dækslet 4 fra karmen 1 i den side af dækslet,hvor åbningen 15 til brækjernet er, og dækslet 4 kandernæst løftes op af karmen.When the cover 4 is to be released from its locked position in the manhole frame 1, a long rigid part 14, for example a fracture iron, is inserted through the opening 15 so that the tip of the fracture iron engages between the edge 16 of the contact surface 3 and the resilient arm 5. Without bending the core 14 against the edge 16, the resilient arm 5 is pressed inwards, so that the cam 6 is pulled out of its locking position under the ledge 2. A further tilting movement of the core 14, which rests against the edge 16, the loose cover 4 from the frame 1 in the side of the cover where the opening 15 of the breaking iron is and the cover 4 can be lifted up from the frame.
Fig. 2 viser foruden de dele af dækslet og karmsyste¬met, som allerede er vist i fig. 1, der er et snit ef¬ter linien B-B i fig. 2, en afstivningsribbe 10, hvor¬til den fjedrende arm 9 med den herpå fastgjorte knast7 er anbragt, fortrinsvis ved faststøbning. I fig. 2ses endvidere afstivningsribben 8, hvortil den fjed¬rende arm 5 med den herpå fastgjorte knast 6 er anbragt,fortrinsvis ved faststøbning. Brækjernsåbningen 15'søvre profil er angivet med henvisningstallet 19.FIG. 2 shows, in addition to the parts of the cover and frame system already shown in FIG. 1, which is a section along line B-B in FIG. 2, a stiffening rib 10, to which the resilient arm 9 with the cam 7 attached thereto is arranged, preferably by casting. In FIG. 2, the stiffening rib 8, to which the resilient arm 5 is secured with the cam 6, is attached, preferably by casting. The upper profile of the fracture iron opening 15 is indicated by the reference numeral 19.
I fig. 3 og 4 er venstre side af de viste figurer iden¬tisk med venstre side af de i respektivt fig. 1 og 2viste figurer. I stedet for den i fig. 1 og 2 vistelåseknast 7 og fjedrende arm 9 er en låseknast il idette tilfælde imidlertid fastgjort til en afstivnings-ribbe 12 som en radial forlængelse af denne. Som detses, har denne knast 11 ligeledes en øvre indgribnings-flade, som vil indgribe neden under anlægsfladen 3 påflangen eller afsatsen 2, når dækslet 4 er blevet bragtpå plads i mandehulskarmen 1.In FIG. 3 and 4, the left side of the figures shown is identical to the left side of the figures shown in FIG. 1 and 2 show figures. Instead of the one shown in FIG. 1 and 2, the locking knob 7 and the resilient arm 9 are, however, in this case attached to a stiffening rib 12 as a radial extension thereof. As seen, this cam 11 also has an upper engagement surface which will engage below the abutment surface 3 of the flange or ledge 2 when the cover 4 has been placed in the manhole frame 1.
Venstre side af de i fig. 5 og 6 viste figurer er idet væsentlige identiske med venstre halvdel af de fi¬gurer, som er vist i respektivt fig. 1 og 2. I stedetfor de i fig. 1 og 2 viste hjælpelåseorganer 7, 9, 10og de i fig. 3 og 4 viste hjælpelåseorganer 11, 12 erder imidlertid i fig. 5 og 6 vist en anden udførelses-form for et hjælpeorgan 13. Dette består af en cirku¬lær ribbe, som er blevet faststøbt til dækslet 4's un- derside, og som forløber med et spillerum til den in¬dre flange eller afsats 2, når dækslet er anbragt imandehulskarmen. Som det ses rager denne afstivnings¬ribbe 13 længere ned under dækslet 4 end afstivnings¬ribberne 17, 18 selv. Ribben 13 må have en sådan højde,at dækslet 4 ikke utilsigtet kan vippes ud af mande¬hulskarmen 1.The left side of the Figs. 5 and 6 are essentially identical to the left half of the figures shown in FIG. 1 and 2. Instead of the ones in FIG. 1 and 2, the auxiliary locking means 7, 9, 10 and those of FIG. 3 and 4, however, as shown in FIGS. 5 and 6 show another embodiment of auxiliary member 13. This consists of a circular rib which has been molded to the underside of the cover 4 and which extends with a clearance for the inner flange or ledge 2, when the cover is placed in the manhole frame. As can be seen, this stiffening rib 13 extends further below the cover 4 than the stiffening ribs 17, 18 itself. The rib 13 must have a height such that the cover 4 cannot be unintentionally flipped out of the manhole frame 1.
Når det i fig. 1 viste dæksel 4 anbringes i karmen 1,kan det lægges ned på vilkårlig måde, da låseknaster¬ne 6 og 7 sidder fast på de respektive fjedrende arme5 og 9 og derfor vil blive trykket indefter af vægtenaf dækslet, når dette anbringes i karmen 1.When in FIG. 1, the cover 4 shown in the frame 1 can be placed in any way, as the locking knobs 6 and 7 are fixed to the respective resilient arms 5 and 9 and will therefore be pressed inward by the weight of the cover when placed in the frame 1.
Når det i fig. 3 og 5 viste dæksel 4 lægges ned i kar¬men 1, er det kun nødvendigt at tage hensyn til, atdækslet 4 først anbringes i karmen 1 med den side, hvor¬på henholdsvis knasten 11 og ribben 30 sidder. Låsekna¬sten 6 vil herved automatisk komme ned under flangeneller anlægsfladen 2, da låseknasten 6 sidder på denfjedrende arm 5, som vil bøje indefter, når dækslet4 trykkes ned i karmen 1.When in FIG. 3 and 5 are placed in the frame 1, it is only necessary to take into account that the cover 4 is first placed in the frame 1 with the side on which the cam 11 and the rib 30 respectively sit. The locking member 6 will thereby automatically fall below the flange or abutment surface 2, as the locking lug 6 is seated on the resilient arm 5, which will bend inwards when the cover 4 is pressed into the frame 1.
Det selvlåsende dæksel ifølge opfindelsen er let atfremstille. Når dækslet 4 støbes,' kan den fjedrendearm 5 samtidigt støbes på undersiden af dækslet. Vedden i fig. 1 og 2 viste udførelsesform for dækslet kanden fjedrende arm 9 ligeledes støbes på undersiden afdækslet samtidigt med støbning af dette. Knasten 7 medden fjedrende arm 9 og knasten 11 (fig. 3 og 4) kanimidlertid også fastgøres til dækslet 4 på andre måderend vist, f.eks. ved hjælp af en gevindsamling.The self-locking cover according to the invention is easy to manufacture. When the cover 4 is molded, the resilient arm 5 can be simultaneously cast on the underside of the cover. The wood of FIG. 1 and 2, the lid spring arm 9 of the lid is likewise molded on the underside of the cover simultaneously with molding thereof. However, the cam 7 with resilient arm 9 and the cam 11 (Figs. 3 and 4) can also be attached to the cover 4 in other ways as shown, e.g. using a thread collection.
Uanset om de fjedrende arme 5, 9 er støbt samtidigtmed dækslet eller uafhængigt af dækslet, vil deres funk¬tion være den samme, når de er blevet fastgjort på un- dersiden af dækslet 4 sammen med de respektive knaster6 og 7.Whether the resilient arms 5, 9 are molded simultaneously with the cover or independently of the cover, their function will be the same once they have been secured to the underside of the cover 4 together with the respective lugs 6 and 7.
Det foretrækkes imidlertid at støbe låseorganerne, somses på undersiden af dækslet, samtidigt med dette. Her¬ved opnås en meget rationel produktion af dækslet medtilhørende låseorganer.However, it is preferred to mold the locking means, which are located on the underside of the cover, at the same time. This results in a very rational production of the cover and associated locking means.
Den indre flange eller afsats 2 tildannes ligeledesved støbning af mandehulskarmen og kræver ikke nogenform for efterbearbejdning.The inner flange or ledge 2 is also formed by casting the manhole frame and does not require any finishing.
Materialet til fremstilling af dækslet med tilhørendelåseorganer ifølge opfindelsen kan være støbejern, menikke almindeligt gråt støbejern, da dette ville værefor lidt elastisk til at tillade armene 5, 9 at bøjeindefter. Der må derfor anvendes støbejern, som er me¬re elastisk, fortrinsvis støbejern med kugleformet gra¬fit. Da støbejern med kugleformet grafit er stærkereend normalt gråt støbejern, kan dækslets vægt reduce¬res i overensstemmelse hermed ved opnåelse af sammestyrke for dækslet, som et dæksel med større vægt støbtaf gråt støbejern har. På grund af betryggende fastlås¬ning af dækslet i mandehulskarmen er dækslets vægt imid¬lertid ikke afgørende for, om dækslet bliver liggendesikkert på sin plads. Af denne grund kan dækslet ogsåfremstilles af et lettere, men stærkt materiale, ogsådanne egnede materialer til fremstilling af dæksleter f.eks. glasfiber eller kulfiberforstærket plast.The material for making the cover with associated locking means according to the invention may be cast iron but not ordinary gray cast iron as this would be too elastic to allow the arms 5, 9 to bend thereafter. Therefore, cast iron which is more elastic, preferably cast iron with spherical graphite, must be used. Since spherical graphite cast iron is stronger than normally gray cast iron, the weight of the cover can be reduced accordingly by obtaining the compressive strength of the cover, which has a larger-weight cast cast gray cast iron cover. However, due to satisfactory locking of the cover in the manhole frame, the weight of the cover does not determine whether the cover will remain secure in place. For this reason, the cover can also be made of a lighter but strong material, also forming suitable materials for the manufacture of cover slats, e.g. fiberglass or carbon fiber reinforced plastic.
Som vist i figurerne har den fjedrende arm 5 under åb¬ningen eller noten 15 gennem dækslet et ophøjet afsnit,som er angivet med henvisningstallet 20. Herved kanværktøjet 14 lettere fange armen 5, når det føres indgennem åbningen eller noten 15. Det er yderligere enfordel, at armen 5 under det ophøjede afsnit 20 har en lille not, som er udformet i dens overflade, og somvender ind mod afsatsen 2, således at værktøjet 14,når det føres ind gennem noten eller åbningen 15, let¬tere kan indgribe mellem anlægsfladen 3's inderkant16 og armen 5.As shown in the figures, the resilient arm 5 below the opening or groove 15 through the cover has an raised portion indicated by the reference numeral 20. Hereby, the tool 14 can more easily catch the arm 5 as it is passed through the opening or groove 15. It is a further advantage that the arm 5 below the raised section 20 has a small groove formed in its surface and which faces the ledge 2, so that the tool 14, when inserted through the groove or opening 15, can more easily engage between the abutment surface 3's inner edge16 and arm 5.
Ued den i fig. 5 og 6 v-iste udførelsesform for hjælpe-låseorganet, d.v.s. ribben 13, forløber denne ribbe13 langs med og indadtil i afstand fra dækslet 4's peri¬feri over en vinkel på 240°C. Dette medfører en yder¬ligere god sikring af dækslet mod utilsigtet at blivevippet op langs en større del af dækslets periferi.Højden af ribben 13 under dækslet 4 er i sig selv såstor, at ribben ved forsøg på at vippe dækslet vil stø¬de mod det nedadhængende skørt på karmen 1 eller nedenunder afsatsen 2. Den vinkel, som ribben 13 spænderover dækslets periferi, kan naturligvis variere, dahovedformålet med ribben 13 er at sikre fastlåsningaf dækslet i den i forhold til låseknasten 6 diametraltmodstående side af dækslet.Without the one shown in FIG. 5 and 6 v. Embodiment of the auxiliary locking means, i.e. rib 13, this rib 13 extends along and inwardly away from the periphery of the cover 4 at an angle of 240 ° C. This results in a further good securing of the cover against being unintentionally tilted up along a larger part of the circumference of the cover. The height of the rib 13 under the cover 4 is itself so large that when attempting to tilt the cover, the rib will abut it. Of course, the angle at which the rib 13 spans the circumference of the cover may vary, the main purpose of the rib 13 being to secure the cover in the diametrically opposed side of the cover relative to the locking knob 6.
Selv om dækslet ifølge opfindelsen oven for er blevetbeskrevet og på tegningen er vist som et cirkulært dæk¬sel, er det klart at dækslet desuden også kan være fir¬kantet, d.v.s. rektangulært eller kvadratisk, og hvilei en modsvarende rektangulær eller kvadratisk karm 1.Although the cover of the invention has been described above and shown in the drawing as a circular cover, it is clear that the cover may also be square, i.e. rectangular or square, and resting in a corresponding rectangular or square frame 1.
I førstnævnte tilfælde er det kun nødvendigt at haveafsatsen 2 langs de sider, som modsvarer de sider pådækslet 4, hvor henholdsvis låseorganerne 6, 7 og 11, 13 er placeret. Ued et kvadratisk dæksel må mandehuls-rammen imidlertid være forsynet med en afsats 2 langsalle sider, således at dækslet kan anbringes i mande-hulskarmen, uanset på hvilken side af dækslets under¬side låseorganerne er placeret.In the former case, it is only necessary that the garden ledge 2 along the sides corresponding to the sides of the cover 4 where the locking means 6, 7 and 11, 13 are respectively located. However, under a square cover, the manhole frame must be provided with a longitudinal side 2 of the ledge so that the cover can be placed in the manhole frame, regardless of which side of the cover's underside the locking means is located.
Claims (8)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO850359 | 1985-01-30 | ||
| NO850359A NO160455C (en) | 1985-01-30 | 1985-01-30 | Device for automatic locking and locking of the cowl lid |
| NO8600008 | 1986-01-29 | ||
| PCT/NO1986/000008 WO1986004624A1 (en) | 1985-01-30 | 1986-01-29 | Self-locking manhole cover |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK460886D0 DK460886D0 (en) | 1986-09-26 |
| DK460886A DK460886A (en) | 1986-09-26 |
| DK154519B true DK154519B (en) | 1988-11-21 |
| DK154519C DK154519C (en) | 1989-04-10 |
Family
ID=19888087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK460886A DK154519C (en) | 1985-01-30 | 1986-09-26 | SELF-LOADING MAN-HOLE COVER |
Country Status (7)
| Country | Link |
|---|---|
| DE (2) | DE3690048C2 (en) |
| DK (1) | DK154519C (en) |
| FI (1) | FI83983C (en) |
| GB (1) | GB2181474B (en) |
| NO (1) | NO160455C (en) |
| SE (1) | SE450713C (en) |
| WO (1) | WO1986004624A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2032874T3 (en) * | 1987-02-02 | 1993-03-01 | Von Roll Ag | SYSTEM TO SECURE A COVER THAT CLOSES AN OPENING. |
| GB2218054A (en) * | 1988-05-06 | 1989-11-08 | George Watkins | Removable aperture closing plate |
| GB8907060D0 (en) * | 1989-03-29 | 1989-05-10 | Craig Philip | Chamber and method of making same,liner and cover therefor |
| DE3925317A1 (en) * | 1989-07-31 | 1991-02-07 | Dallmer Gmbh & Co | FLOOR DRAIN |
| FR2667889A1 (en) * | 1990-10-15 | 1992-04-17 | Pont A Mousson | (EN) PAVEMENT LOOP BUFFER, LOOK COMPRISING THIS BUFFER AND LOCKING RING FOR SUCH A BUFFER. |
| GB2265649B (en) * | 1992-04-02 | 1996-03-13 | Colin Edward Staggs | A manhole cover |
| NZ247626A (en) * | 1992-05-18 | 1994-12-22 | Grahame George Kermonde | Manhole or pit cover secured by spring latch arms retained under compression |
| DE20204108U1 (en) * | 2002-03-14 | 2003-07-24 | Hydrotec Technologies Gmbh & C | Cover of a manhole cover and manhole cover |
| RU2336392C2 (en) | 2003-03-25 | 2008-10-20 | Ако Зеверин Альманн Гмбх Унд Ко. Кг | Covering device |
| DE10356168B4 (en) * | 2003-12-02 | 2007-04-12 | Aco Severin Ahlmann Gmbh & Co. Kg | Manhole cover with lifting protection |
| CN107675726A (en) * | 2016-08-01 | 2018-02-09 | 先源开 | A kind of synchronous adjustable safety inspection well cover |
| RU2702791C1 (en) * | 2018-12-13 | 2019-10-11 | Государственное Унитарное Предприятие "Водоканал Санкт-Петербурга" | Manhole cover with retainer and damping lining of manhole cover |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1693190A (en) * | 1925-08-29 | 1928-11-27 | Elsa D Theobald Guenther | Manhole cover |
| US1988360A (en) * | 1932-10-28 | 1935-01-15 | Lenape Hydraulic Pressing & Fo | Manhole frame cover |
| GB521309A (en) * | 1938-11-15 | 1940-05-17 | Augustine Joseph Hartley | Improvements in cast iron covers and frames for gullies, manholes, hydrants and the like openings in roads or footpaths |
| US2535275A (en) * | 1946-01-28 | 1950-12-26 | Dixon Frank Thomas | Manhole lid clamp |
| DE820553C (en) * | 1948-10-02 | 1951-11-12 | Daimler Benz Ag | Door lock |
| DE7029833U (en) * | 1970-08-07 | 1970-12-17 | Passavant Werke | LOCKABLE MANHOLE COVER. |
| US4142329A (en) * | 1977-10-25 | 1979-03-06 | Williams Robert C | Catch basin grate and receiving frame locking assembly |
| SE416483B (en) * | 1978-08-25 | 1981-01-05 | Varnesforetagen Ab Tierps Jern | Cover device for a manhole, a gutter inlet or the like |
| NL7905854A (en) * | 1979-07-30 | 1981-02-03 | Raatjes Egbertus Sijbolt | COVER. |
| GB2085946A (en) * | 1980-10-17 | 1982-05-06 | British Steel Corp | Locking manhole covers and gully grids |
| GB2119836A (en) * | 1982-01-29 | 1983-11-23 | Brickhouse Dudley Mfg | Manhole cover or grating and frame assemblies |
| SE436050B (en) * | 1983-03-22 | 1984-11-05 | Uponor Ab | Locking apparatus for drain cover |
-
1985
- 1985-01-30 NO NO850359A patent/NO160455C/en not_active IP Right Cessation
-
1986
- 1986-01-29 WO PCT/NO1986/000008 patent/WO1986004624A1/en active IP Right Grant
- 1986-01-29 DE DE3690048A patent/DE3690048C2/en not_active Expired - Lifetime
- 1986-01-29 GB GB08622677A patent/GB2181474B/en not_active Expired
- 1986-01-29 DE DE19863690048 patent/DE3690048T/de active Pending
- 1986-09-25 SE SE8604068A patent/SE450713C/en not_active IP Right Cessation
- 1986-09-26 DK DK460886A patent/DK154519C/en not_active IP Right Cessation
- 1986-09-26 FI FI863887A patent/FI83983C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1986004624A1 (en) | 1986-08-14 |
| SE450713B (en) | 1987-07-20 |
| FI863887A0 (en) | 1986-09-26 |
| FI863887A (en) | 1986-09-26 |
| NO850359L (en) | 1986-07-31 |
| SE8604068L (en) | 1986-09-25 |
| DK154519C (en) | 1989-04-10 |
| DE3690048T (en) | 1987-03-12 |
| DK460886D0 (en) | 1986-09-26 |
| SE8604068D0 (en) | 1986-09-25 |
| FI83983B (en) | 1991-06-14 |
| GB2181474B (en) | 1988-08-03 |
| GB2181474A (en) | 1987-04-23 |
| NO160455C (en) | 1995-04-25 |
| DK460886A (en) | 1986-09-26 |
| SE450713C (en) | 1991-06-25 |
| GB8622677D0 (en) | 1986-10-22 |
| FI83983C (en) | 1991-09-25 |
| DE3690048C2 (en) | 1996-03-28 |
| NO160455B (en) | 1989-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DK154519B (en) | SELF-LOADING MAN-HOLE COVER | |
| US5575401A (en) | Portable storage assembly | |
| US3858755A (en) | Meter box with cover having biased snap-lock | |
| US7134207B2 (en) | Foldable utility knife | |
| CA1286267C (en) | Wastebasket and inner liner retainer | |
| EP2010434B1 (en) | Stackable boxes and covers | |
| US9469024B2 (en) | Container assembly | |
| US3046853A (en) | Manhole closure | |
| JP5188984B2 (en) | Cooking container with one or more pivot handles | |
| AU638662B2 (en) | Locking system for a waste receptacle | |
| US20050244227A1 (en) | Construction castings with ball and socket connectors | |
| AU2006202953A1 (en) | Foldable utility knife | |
| US4355743A (en) | Heavy and light duty garment clamping hanger | |
| US2710491A (en) | Ground vase | |
| US5320011A (en) | Safety device latch for a paper cutter | |
| CN110958980B (en) | Container with lid lock | |
| KR101596738B1 (en) | A Lift Manhole assembly | |
| US2111359A (en) | Receptacle cover | |
| JP2012143157A (en) | Petri dish | |
| US3013635A (en) | Safety device for vehicle lifts | |
| US2172761A (en) | Receptacle cover | |
| CN218402046U (en) | Desktop garbage can | |
| JPS6030931Y2 (en) | Fish and shellfish growing container | |
| EP1183196B1 (en) | Refuse collection container | |
| SK98395A3 (en) | Cover, mainly for technical opening of hydrant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUP | Patent expired |