DK153579B

DK153579B - UNIT FOR LOADING A BURN COVER

Info

Publication number: DK153579B
Application number: DK381481A
Authority: DK
Inventors: Lennart Backman
Original assignee: Gustavsberg Ab
Priority date: 1980-08-28
Filing date: 1981-08-27
Publication date: 1988-07-25
Also published as: FI812562L; NO156908C; SE8006028L; SE440805B; DE3133658A1; DE3133658C2; FI67905B; FI67905C; NO812799L; DK153579C; NO156908B; DK381481A

Description

Opfindelsen angår et aggregat til låsning af et brønddæksel mod en brøndvæg i en afløbsbrønd, hvilket låseaggregat indeholder fra dækslets overside påvirkelige låselegemer. Et sådant dæksel anvendes f.eks. i rørnet i gader og på trafikerede pladser samt til overdækning af udgravninger.BACKGROUND OF THE INVENTION The invention relates to an assembly for locking a well cover against a well wall of a drain well, which includes locking assemblies which are adjustable from the upper side of the cover, lockable bodies. Such a cover is used e.g. in the pipeline in streets and in traffic, as well as to cover excavations.

Brønddæksler, der er anbragt over f.eks. afløbsbrønde får ofte lov at ligge løse, da dækslet på grund af sin tyngde kan forventes at ligge stille, selv når et køretøj passerer hen over dækslet. Hvis imidlertid anlægsfladen mellem dækslet og brønden er ujævn, hvilket ofter er tilfældet, kan dækslet let komme til at vippe.Well covers placed over e.g. drain wells are often left loose, as the cover due to its weight can be expected to lie still, even when a vehicle passes over the cover. However, if the contact surface between the cover and the well is uneven, which is often the case, the cover can easily tilt.

I mange tilfælde behøver dækslet derfor at være låst fast ved brønden for at forhindre tilvejebringelse af skramlelyde og lignende støj. Også ud fra et sikkerhedshensyn er det hensigtsmæssigt at forsyne brønddæksler med én eller anden fom for låseaggregat for at forhindre en utilsigtet opløftning heraf.In many cases, therefore, the cover needs to be locked to the well to prevent the provision of rattling sounds and similar noise. Also, from a safety point of view, it is advisable to provide well cover with some fom for locking assembly to prevent unintentional lifting thereof.

Kendte låseaggregater til brønddasksler har f.eks. omfattet hager på dækslet, der ved et bajonetindgreb bringes til at samvirke med ved brøndringen placerede komplementære hager. Yderligere kendes der låsestempler, hvor et stempel fra dækslets overside bringes til at løbe ind i til formålet tilvejebragte udsparinger ved brøndringen. I praksis har de kendte låseaggregater ikke fundet større udbredelse, hvilket dels skyldes de komplicerede konstruktioner, dels det forhold, at låsemekanismen er bragt ud af funktion som følge af rustangreb eller smudsansamlinger.Known well assemblies for well casings have e.g. covered hooks on the cover which are caused by a bayonet engagement to cooperate with complementary hooks located at the well. Further, locking pistons are known in which a piston from the top of the cover is caused to run into recesses provided for the purpose at the well ring. In practice, the known locking assemblies have not found any widespread use, which is partly due to the complicated structures and partly to the fact that the locking mechanism is brought out of function due to rust attacks or dirt accumulations.

Formålet med opfindelsen er at anvise et låseaggregat, der opfylder de krav, der kan stilles med hensyn til enkel montage og demontage, samtidig med at det primære krav om effektiv låsning opfyldes.The object of the invention is to provide a locking assembly which meets the requirements that can be set for simple assembly and disassembly, while meeting the primary requirement for effective locking.

Dette fomål opnås ifølge opfindelsen ved et aggregat til låsning af et brønddæksel af den indledningsvis angivne art, og som er. ejendommeligt ved det i krav l's kendetegnende del angivne.This object is achieved according to the invention by means of an assembly for locking a well cover of the type indicated initially and which is. peculiar to the characterizing part of claim 1.

Opfindelsen skal i det følgende forklares nærmere under henvisning til tegningen, på hvilken fig. 1 viser et lodret snit gennem en periferidel af et dæksel ved brøndkanten, og fig. 2 et snit efter linien A-A i fig. 1.The invention will now be explained in more detail with reference to the drawing, in which: 1 is a vertical section through a peripheral portion of a cap at the well edge, and FIG. 2 is a sectional view taken along line A-A of FIG. First

Omkring et brønddæksel l's periferi er der anbragt et antal kilespor 2. Hvert kilespor 2 er forsynet med en kileformet bane 3, hvis udstrækning i omkredsretningen er begrænset af to kilespors gavlvægge 4a og 4b. Kilebanen 3 hælder ud mod dækslet l's periferi, så at det sammen med brøndringen 5's inderside 6 danner et nedad indsnævrende spor. En centralt beliggende udsparing 7, hvis formål vil fremgå af det følgende, er udsparet i kilesporet 2 og opdeler kilebanen 3 i to dele.Around the periphery of a well cover 1, a plurality of wedge grooves 2 are provided. Each wedge groove 2 is provided with a wedge-shaped web 3, the extent of which is circumferentially limited by two wedge groove walls 4a and 4b. The lane 3 slopes toward the periphery of the cover 1 so that, together with the inside 6 of the well ring 5, it forms a downwardly narrowing groove. A centrally located recess 7, the purpose of which will become apparent from the following, is recess in the keyway 2 and divides the keyway 3 into two parts.

Til låsning af dækslet 1 mod brøndringen 5 anvendes et låselegeme i form af en rulle 8. Låsekraften opnås derved, at låselegemet 8 placeres mellem brøndringen 5's inderside 6 og kilebanen 3 samt presses eller slås ned, indtil der opstår en vis initialspænding. Ved bevægelse opad af daskslet 1 ruller låselegemet ned samtidig med at rummet for låselegemet 8 mindskes som følge af kilebanen 3's hældning, hvorved låsekraften øges drastisk, selv om brøndringen 5's inderside 6 har den i fig. 1 viste hældning.To lock the cover 1 against the well ring 5, a locking member is used in the form of a roller 8. The locking force is obtained by placing the locking body 8 between the inside of the well ring 5 and the wedge path 3 and pressing or knocking down until a certain initial stress is created. By moving upwardly of the casing 1, the locking body rolls down while at the same time reducing the space of the locking body 8 as a result of the inclination of the wedge web 3, which drastically increases the locking force, even though the inside 6 of the well ring 5 has the one shown in FIG. 1.

For at forhindre at låselegemet 8 falder ned i brønden, hvis dækslet 1 lægges ekscentrisk i en brønd med maksimale mål, er hver kilebane 3 ved den nedre ende forsynet med en vulst 9. Denne vulst har en sådan vinkel i forhold til låselegemet 8, at låselegemet føres op, indtil det indtager en lige stilling for montage, hvor dækslet centreres i brønden.In order to prevent the locking body 8 from falling into the well, if the cover 1 is placed eccentrically in a well of maximum dimensions, each wedge path 3 is provided at the lower end with a bead 9. This bead has such an angle with respect to the locking body 8 that the locking body is raised until it takes a straight position for mounting, where the cover is centered in the well.

Kilesporene 2's gavlvægge 4a og 4b har tre funktioner: 1. Forstærker kilebanerne 3 2. Forhindrer låselegemet 8 i at falde ud af sin stilling 3. Udgør en forstærkning, når dækslet 1 er placeret på brønden.The gable walls 4a and 4b of the wedge grooves 2 have three functions: 1. Reinforces the wedge webs 3 2. Prevents the locking body 8 from falling out of its position 3. Provides a reinforcement when the cover 1 is located on the well.

Montage og demontage kan tilvejebringes ved hjælp af et enkelt værktøj, f.eks. et brækjern, der ved montagen anvendes til at hamre låselegemet ned. Ved demontage føres brækjernets ende op i udsparingen 7, og låselegemet kan således løsnes .Mounting and disassembly can be provided by a simple tool, e.g. a fracture iron used during assembly to hammer the locking body down. Upon disassembly, the end of the bracket is inserted into the recess 7 and thus the locking body can be loosened.

Ved et aggregat ifølge opfindelsen opnås den bedst mulige korrosionsbeskyttelse, da alene støbejern anvendes, og da faren for spændingsvirkningen ved eventuel korrosion ikke er til stede.An assembly according to the invention achieves the best possible corrosion protection, since only cast iron is used and since the danger of the stress effect of any corrosion is not present.

Claims

An assembly for locking a well cover (1) against a well wall (6) in a drain well, which includes a lockable assembly from the upper lockable locking members of the cover (1), characterized in that the well cover (0-) is provided with a number located along its periphery. wedge groove (2), each containing a keyway (3) provided with a centrally located recess (3) which together with the well wall (6) forms a downwardly narrowing groove for receiving a locking body in the form of a roller (8).

Assembly according to claim 1, characterized in that each wedge path (3) is defined by two. gable walls (4a, 4b).

An assembly according to claim 1 or 2, characterized in that the lower end of the wedge track (3) is provided with a bead (9).