EP1253281B1 - Ladder for manhole - Google Patents
Ladder for manhole Download PDFInfo
- Publication number
- EP1253281B1 EP1253281B1 EP02008822A EP02008822A EP1253281B1 EP 1253281 B1 EP1253281 B1 EP 1253281B1 EP 02008822 A EP02008822 A EP 02008822A EP 02008822 A EP02008822 A EP 02008822A EP 1253281 B1 EP1253281 B1 EP 1253281B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ladder
- tread elements
- bars
- shaped configuration
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
- E06C9/02—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
Definitions
- the invention relates to a ladder according to claim 1, to be walked on of sewage shafts, with two vertical, parallel to each other Spars and a variety of tread elements that cannot be detached from the spars are attached, as well as with fasteners for attaching the ladder to the Shaft wall.
- brackets are known for example from DE 297 15 681 U1. adversely on these brackets is in particular the high required for the attachment Installation effort. For each bracket, two holes have to be made to measure into the shaft wall.
- JP-A-10317358 discloses a ladder with all the features of the preamble of claim 1.
- the invention has for its object to provide a shaft ladder, which the Deposition of fibrous material prevents a comfortable and safe Inspection of the shaft enables and only a small assembly effort requires.
- the object is achieved by a ladder according to claim 1, in which the tread elements are U-shaped and of the protrude into the cross-section of the shaft on the side walls of the shaft.
- the decisive advantage of the shaft ladder according to the invention is that Avoiding intersection points in the shaft cross-section between horizontal and vertical parts of the ladder and therefore only small parts Possibility of fibrous deposits on the ladder. Should fibrous parts still deposit on the ladder, these are essentially of the linear unbranched contour of the conductor can be easily removed.
- the individual tread elements of the ladder according to the invention can both be made of Pipe material, as well as solid material. Does the material have a sufficient strength, the use of pipe material is recommended, since this can be bent more easily during processing, the procurement is usually cheaper and handling due to the weight saving is simplified. When using non-corrosion resistant It is better to work with solid materials, especially with Presence of aggressive media which ensures strength.
- the ladder according to the invention made of V4a material manufacture. Additional corrosion protection is advantageously dispensed with.
- U-shaped tread elements have a round cross-section. They should also be U-shaped trained tread elements be designed such that the two legs the U shape to the section between the legs from the by the of protrude the horizontal plane defined between the two legs and thus protection against lateral sliding off the tread elements form. Such a design of the tread elements wins especially in view to the mostly damp, low-friction environment in canals.
- the risk of a dangerous slipping off the ladder according to the invention is advantageously reduced in that the tread elements on their footprint are provided with surveys.
- These bumps can shape of spherical pimples, or also useful in the manner of a Tear plate can be formed.
- the execution of these projections should be both prevent sideways and frontal sliding off the tread elements.
- the manufacturing cost of a ladder according to the invention is reduced if the Tread elements consist essentially of bent tubes.
- the material used after the bend has insufficient strength properties have, is a design of the tread elements from pipe bends and straight pipe sections that are welded together are preferable.
- the conductor is provided with the reference number 1.
- the ladder 1 consists essentially of two vertical bars 2 and one Large number of individual welded to the two vertical spars 2 Step elements 3.
- the ladder 1 is at certain vertical intervals by means of fasteners 4 attached to the shaft wall 5.
- the tread elements 3 are U-shaped when viewed vertically, the section 6 between the two legs 7 of the U-shape so bent is that a lateral sliding from the tread elements 3 avoided becomes.
- the round cross section of the tread elements 3 enables a comfortable one Hold on during the inspection.
- the individual tread elements 3 are welded to the vertical bars 2. All components are rustproof due to their design in V4A material.
- the section 6 between the two legs 7 of the U-shape is used on the Top side as contact area 8 and is there with nub-like elevations 9 Mistake.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
Die Erfindung betrifft eine Leiter nach Anspruch 1, zum Begehen
von Abwasserschächten, mit zwei senkrechten, parallel zueinander verlaufenden
Holmen und einer Vielzahl von Trittelementen, die unlösbar an den Holmen
befestigt sind, sowie mit Befestigungsmitteln zum Befestigen der Leiter an der
Schachtwand.The invention relates to a ladder according to
Im Rahmen von Wartungsarbeiten und Reparaturen ist die Begehbarkeit von Schächten ein dringendes Erfordernis. Daher finden sich im Kanalbau meist an den Kanalwänden befestigte Leitern oder Bügel, die in den Schachtquerschnitt vorstehen.Within the scope of maintenance work and repairs, the accessibility of Shafting an urgent requirement. That is why they are mostly found in sewer construction ladders or brackets fastened to the channel walls, which extend into the shaft cross section protrude.
Solche Bügel sind beispielsweise aus der DE 297 15 681 U1 bekannt. Nachteilig an diesen Bügeln ist insbesondere der für die Anbringung erforderliche hohe Montageaufwand. Für jeden Bügel müssen nämlich zwei Bohrungen maßgerecht in die Schachtwand eingebracht werden.Such brackets are known for example from DE 297 15 681 U1. adversely on these brackets is in particular the high required for the attachment Installation effort. For each bracket, two holes have to be made to measure into the shaft wall.
Aus der deutschen Patentschrift DE 30 40 981 C1 ist es bekannt, eine Steighilfe mittels umlaufender Befestigungsringe in einem runden Schacht anzubringen. Die dafür vorgesehen Steigeisen sind an zwei Vertikalholmen jeweils um eine halbe Schrittlänge zueinander versetzt angeordnet. Äußerst schwierig und daher auch gefährlich ist das Festhalten an diesen Steigeisen. Die Steigeisen erlauben kein Umgreifen, sondern müssen kraftraubend im Zangengriff benutzt werden. From the German patent DE 30 40 981 C1 it is known to use a climbing aid to be installed in a round shaft using circumferential fastening rings. The crampons provided for this purpose are on each of the two vertical bars half stride length offset. Extremely difficult and therefore holding onto these crampons is also dangerous. Allow the crampons no gripping, but must be used in a force-consuming manner in the pliers handle.
Es ist weiterhin Stand der Technik, herkömmliche Leitern mittels Streben an einer Schachtwand zu befestigen. In den sich ergebenden, frei im Raum stehenden Kreuzungspunkten zwischen den vertikalen Leiterholmen und den Leitersprossen sowie den vertikalen Leiterholmen und den Befestigungsstreben setzen sich hartnäckige faserige Ablagerungen ab, die selbst mit leistungsfähigem Reinigungsgerät nur schwer zu entfernen sind. Derartige Ablagerungen machen nach einiger Zeit das Begehen der Leiter höchst unsicher, wenn nicht sogar unmöglich.It is also state of the art, conventional conductors by means of struts on one To fix the shaft wall. In the resulting, free-standing space Crossing points between the vertical ladder bars and the rung as well as the vertical ladder stiles and the fastening struts stubborn fibrous deposits settle, even with powerful Cleaning device are difficult to remove. Such deposits after a while make walking the ladder extremely unsafe, if not even impossible.
Weiterhin offenbart JP-A-10317358 eine leiter mit allen Merkmalen des Oberbegriffs des Anspruchs 1.Furthermore, JP-A-10317358 discloses a ladder with all the features of the preamble of
Ausgehend von den beschriebenen Nachteilen des Standes der Technik liegt der Erfindung die Aufgabe zugrunde, eine Schachtleiter zu schaffen, welche die Ablagerung von faserigem Material verhindert, eine komfortable und sichere Begehung des Schachtes ermöglicht und einen nur geringen Montageaufwand erfordert.Based on the disadvantages of the prior art described the invention has for its object to provide a shaft ladder, which the Deposition of fibrous material prevents a comfortable and safe Inspection of the shaft enables and only a small assembly effort requires.
Erfindungsgemäß wird die Aufgabe durch eine Leiter nach Anspruch 1 gelöst,
bei welcher die Trittelemente U-förmig ausgebildet sind und von den
an der Schachtwand anliegenden Holmen in den Schachtquerschnitt vorstehen.According to the invention the object is achieved by a ladder according to
Der entscheidende Vorteil der erfindungsgemäßen Schachtleiter liegt in der Vermeidung von im Schachtquerschnitt liegenden Kreuzungspunkten zwischen horizontalen und vertikalen Teilen der Leiter und der dadurch nur noch geringen Möglichkeit, daß sich faserige Ablagerungen an der Leiter festsetzen. Sollten sich dennoch faserige Teile an der Leiter ablagern, sind diese von der im wesentlichen linearen unverzweigten Kontur der Leiter leicht zu entfemen.The decisive advantage of the shaft ladder according to the invention is that Avoiding intersection points in the shaft cross-section between horizontal and vertical parts of the ladder and therefore only small parts Possibility of fibrous deposits on the ladder. Should fibrous parts still deposit on the ladder, these are essentially of the linear unbranched contour of the conductor can be easily removed.
Ein weiterer großer Vorteil der erfindungsgemäßen Leiter liegt in dem geringen Montageaufwand, da die Leiter an nur wenigen Befestigungspunkten mit den Vertikalholmen an der Schachtwand angebracht wird. Das im Stand der Technik übliche Einbringen von Steigbügeln in die Schachtwand und die dafür erforderlichen zahlreichen Bohrungen entfallen. Die Schachtleiter wird als vorgefertigtes Bauteil an ihrem Einsatzort an der Schachtwand befestigt. Sollte der Schacht eine außergewöhnlich große Tiefe aufweisen, ist es auch denkbar, mehrere Teilstücke im Schacht übereinander angeordnet zu befestigen. Another great advantage of the conductors according to the invention is the small size Assembly effort, since the ladder with the Vertical bars are attached to the shaft wall. That in the state of the art The usual introduction of stirrups into the shaft wall and the necessary ones numerous holes are omitted. The shaft ladder is called prefabricated Component fastened to the shaft wall at its place of use. Should the shaft have an exceptionally large depth, it is also conceivable to have several Fasten sections arranged one above the other in the shaft.
Die einzelnen Trittelemente der erfindungsgemäßen Leiter können sowohl aus Rohrmaterial, als auch aus Vollmaterial bestehen. Verfügt das Material über eine ausreichende Festigkeit, empfiehlt sich die Verwendung von Rohrmaterial, da sich dieses im Rahmen der Verarbeitung leichter biegen läßt, die Beschaffung in der Regel kostengünstiger ist und die Handhabung aufgrund der Gewichtsersparnis vereinfacht wird. Bei Verwendung von nicht korrosionsbeständigen Werkstoffen arbeitet man besser mit Vollmaterial, damit insbesondere bei Anwesenheit von aggressiven Medien die Festigkeit gewährleistet ist.The individual tread elements of the ladder according to the invention can both be made of Pipe material, as well as solid material. Does the material have a sufficient strength, the use of pipe material is recommended, since this can be bent more easily during processing, the procurement is usually cheaper and handling due to the weight saving is simplified. When using non-corrosion resistant It is better to work with solid materials, especially with Presence of aggressive media which ensures strength.
Die Erfahrung hat ebenfalls im Hinblick auf die aggressiven Medien in Kanälen gezeigt, daß es zweckmäßig ist, die erfindungsgemäße Leiter aus V4a Material herzustellen. Ein zusätzlicher Korrosionsschutz entfällt in vorteilhafter Weise. Die bisher übliche Beschichtung hielt den starken Belastungen, insbesondere während der Reinigung, selten stand.The experience also has with regard to the aggressive media in channels shown that it is expedient, the ladder according to the invention made of V4a material manufacture. Additional corrosion protection is advantageously dispensed with. The previously common coating withstood the heavy loads, in particular during cleaning, rarely stood.
Das Begehen der Leiter, insbesondere das Festhalten an den Trittelementen, fällt dem Benutzer sehr viel leichter, wenn die U-förmig ausgebildeten Trittelemente einen runden Querschnitt aufweisen. Darüber hinaus sollten die U-förmig ausgebildeten Trittelemente derart ausgebildet sein, daß die beiden Schenkel der U-Form zu dem Abschnitt zwischen den Schenkeln aus der durch die von dem Abschnitt zwischen den beiden Schenkeln definierten Horizontalebene hervorstehen und so einen Schutz gegen seitliches Abgleiten von den Trittelementen bilden. Eine derartige Ausbildung der Trittelemente gewinnt vor allem in Hinblick auf die meist feuchte, reibungsmindemde Umgebung in Kanälen an Bedeutung.Walking on the ladder, especially holding onto the tread elements, is much easier for the user if the U-shaped tread elements have a round cross-section. They should also be U-shaped trained tread elements be designed such that the two legs the U shape to the section between the legs from the by the of protrude the horizontal plane defined between the two legs and thus protection against lateral sliding off the tread elements form. Such a design of the tread elements wins especially in view to the mostly damp, low-friction environment in canals.
Das Risiko eines gefährlichen Abrutschens von der erfindungsgemäßen Leiter wird vorteilhafterweise dadurch reduziert, daß die Trittelemente auf ihrer Aufstandsfläche mit Erhebungen versehen sind. Diese Erhebungen können die Gestalt von sphärenhaften Noppen haben, oder auch zweckmäßig in der Art eines Tränenblechs ausgebildet sein. Die Ausführung dieser Vorsprünge sollte sowohl ein seitliches, als auch ein frontales Abgleiten von den Trittelementen verhindern. The risk of a dangerous slipping off the ladder according to the invention is advantageously reduced in that the tread elements on their footprint are provided with surveys. These bumps can shape of spherical pimples, or also useful in the manner of a Tear plate can be formed. The execution of these projections should be both prevent sideways and frontal sliding off the tread elements.
Der Fertigungsaufwand einer erfindungsgemäßen Leiter ist reduziert, wenn die Trittelemente im wesentlichen aus gebogenen Rohren bestehen. Sollte das verwendete Material jedoch nach der Biegung nur noch unzureichende Festigkeitseigenschaften aufweisen, ist eine Ausführung der Trittelemente aus Rohrbögen und geraden Rohrstücken, die miteinander verschweißt sind, vorzuziehen.The manufacturing cost of a ladder according to the invention is reduced if the Tread elements consist essentially of bent tubes. should that However, the material used after the bend has insufficient strength properties have, is a design of the tread elements from pipe bends and straight pipe sections that are welded together are preferable.
Sollte die Schachtwand des Schachtes in der die erfindungsgemäße Leiter zu installieren ist, Vorsprünge und Hinterschneidungen aufweisen, ist es sinnvoll, zwischen der Schachtleiter und der Schachtwand zur Überbrückung von Unterschieden im Abstandsniveau Distanzscheiben anzuordnen. Auch hier kommt ein weiterer Vorteil der erfindungsgemäßen Leiter gegenüber herkömmlichen Steigbügeln zum Tragen, da Absätze in der Schachtwand bei herkömmlichen Steigbügeln stets unterschiedliche Tiefenniveaus der Trittelemente zur Schachtwand zur Folge hatte. Diese Unterschiede können mit der erfindungsgemäßen Leiter durch das Unterlegen von Distanzscheiben zweckmäßig ausgeglichen werden.Should the shaft wall of the shaft in the ladder according to the invention install protrusions and undercuts, it makes sense between the shaft ladder and the shaft wall to bridge differences Arrange spacers in the distance level. Also comes here Another advantage of the ladder according to the invention over conventional stirrups to wear because heels in the shaft wall with conventional stirrups always different depth levels of the tread elements to the shaft wall resulted in. These differences can be achieved with the ladder according to the invention be appropriately compensated for by placing spacers.
Zur Verdeutlichung der Erfindung wird im folgenden ein spezielles Ausführungsbeispiel unter Bezugnahme auf Zeichnungen näher erläutert. Es zeigen:
- Fig. 1:
- Eine Seitenansicht einer erfindungsgemäßen Leiter,
- Fig. 2:
- Eine Sicht von vome auf eine erfindungsgemäße Leiter und
- Fig. 3:
- Einen Schnitt durch eine erfindungsgemäße Leiter.
- Fig. 1:
- A side view of a ladder according to the invention,
- Fig. 2:
- A view from vome of a ladder and
- Fig. 3:
- A section through a ladder according to the invention.
In den Figuren 1, 2 und 3 ist die Leiter jeweils mit dem Bezugszeichen 1 versehen.
Die Leiter 1 besteht im wesentlichen aus zwei vertikalen Holmen 2 und einer
Vielzahl von einzelnen an den beiden vertikalen Holmen 2 angeschweißten
Trittelementen 3. Die Leiter 1 ist in bestimmten vertikalen Abständen mittels Befestigungsmitteln
4 an der Schachtwand 5 angebracht. In Figures 1, 2 and 3, the conductor is provided with the
Die Trittelemente 3 sind in vertikaler Betrachtungsweise U-förmig ausgeführt,
wobei der Abschnitt 6 zwischen den beiden Schenkeln 7 der U-Form derart abgekröpft
ist, daß ein seitliches Abgleiten von den Trittelementen 3 vermieden
wird. Der runde Querschnitt der Trittelemente 3 ermöglicht ein komfortables
Festhalten bei der Begehung.The
Die einzelnen Trittelemente 3 sind mit den vertikalen Holmen 2 verschweißt.
Sämtliche Bauteile sind aufgrund ihrer Ausführung in V4A-Material nichtrostend.The
Der Abschnitt 6 zwischen den beiden Schenkeln 7 der U-Form ist dient auf der
Oberseite als Aufstandsfläche 8 und ist dort mit noppenartigen Erhebungen 9
versehen.The section 6 between the two legs 7 of the U-shape is used on the
Top side as contact area 8 and is there with nub-
Claims (8)
- A ladder (1) for negotiating sewerage shafts, comprising two perpendicular bars (2) which extend parallel to each other and a plurality of tread elements (3) which are non-releasably fixed to the bars (2), and fixing means (4) for fixing the ladder (1) to the shaft wall (5), wherein the tread elements (3) are of a U-shaped configuration and project from the bars (2) into the shaft cross-section, and which ladder can be mounted with the fixing means (4) to the shaft wall (5) in such a way that the bars (2) bear directly against the shaft wall (5), and characterised in that the tread elements (3) of a U-shaped configuration are welded to the bars (2) and are of a cranked configuration in such a way that the two limbs (7) of the U-shape project to the portion (6) between the two limbs (7) out of the horizontal plane defined by the portion (6) between the two limbs (7) and thus form protection from sliding laterally off the tread elements (3).
- A ladder (1) according to claim 1 characterised in that the tread elements (3) of a U-shaped configuration comprise tubular material.
- A ladder (1) according to claim 1 characterised in that the tread elements (3) of a U-shaped configuration comprise solid material.
- A ladder (1) according to claim 1 characterised in that the ladder (1) comprises V4A material.
- A ladder (1) according to claim 1 characterised in that the tread elements (3) of a U-shaped configuration are of a round cross-section.
- A ladder (1) according to claim 1 characterised in that the tread elements (3) are provided with projections on their tread surface (8).
- A ladder (1) according to claim 1 characterised in that the tread elements (3) substantially comprise curved tubes.
- A ladder (1) according to claim 1 characterised in that the tread elements (3) substantially comprise tubular hoops and straight tubular portions which are welded together.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20107005U | 2001-04-23 | ||
| DE20107005U DE20107005U1 (en) | 2001-04-23 | 2001-04-23 | Shaft manager |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1253281A1 EP1253281A1 (en) | 2002-10-30 |
| EP1253281B1 true EP1253281B1 (en) | 2004-05-19 |
Family
ID=7956109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02008822A Expired - Lifetime EP1253281B1 (en) | 2001-04-23 | 2002-04-19 | Ladder for manhole |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1253281B1 (en) |
| AT (1) | ATE267336T1 (en) |
| DE (2) | DE20107005U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202021103802U1 (en) | 2021-07-15 | 2022-02-07 | Thomas Schmitz | ladder |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4100997A (en) * | 1976-06-21 | 1978-07-18 | Peacock Bobbie D | Step construction employing insertable fastener having deformable projections |
| US4232760A (en) * | 1978-04-17 | 1980-11-11 | Buffalo Brake Beam Company | Ladder assembly and method of making same |
| CA1096146A (en) * | 1978-12-20 | 1981-02-24 | Anthony Foscarini | Method of installing manhole safety steps and plugs therefor |
| DE3040981C1 (en) | 1980-10-28 | 1982-09-02 | Udo 1000 Berlin Scheffler | Device for holding crampons |
| US4548294A (en) * | 1982-09-22 | 1985-10-22 | Harris Manufacturing Corporation | Ladder for a boat and method of fabrication |
| US4702349A (en) * | 1985-09-20 | 1987-10-27 | Zenhaeusern Heinrich | Anchor step |
| DE9315655U1 (en) * | 1993-10-18 | 1993-12-09 | A. Barthof GmbH, 44653 Herne | Roof ladder |
| AT1507U1 (en) | 1996-09-17 | 1997-06-25 | Koch Josef | WALL RUNG FOR STEEL AID |
| JP3066954B2 (en) * | 1997-05-19 | 2000-07-17 | 三山工業株式会社 | Attachment structure for manhole footrest |
| JP3066957B2 (en) * | 1997-05-19 | 2000-07-17 | 三山工業株式会社 | Footrest mounting device |
| JP3066953B2 (en) * | 1997-05-19 | 2000-07-17 | 三山工業株式会社 | Attachment structure for manhole footrest |
| DE20106892U1 (en) * | 2001-04-20 | 2001-06-28 | Stahlbau Kurt Klatetzki GmbH & Co.KG, 58739 Wickede | Manhole entry and ladder |
-
2001
- 2001-04-23 DE DE20107005U patent/DE20107005U1/en not_active Expired - Lifetime
-
2002
- 2002-04-19 EP EP02008822A patent/EP1253281B1/en not_active Expired - Lifetime
- 2002-04-19 DE DE50200451T patent/DE50200451D1/en not_active Expired - Lifetime
- 2002-04-19 AT AT02008822T patent/ATE267336T1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202021103802U1 (en) | 2021-07-15 | 2022-02-07 | Thomas Schmitz | ladder |
| EP4119765A1 (en) | 2021-07-15 | 2023-01-18 | Thomas Schmitz | Ladder |
Also Published As
| Publication number | Publication date |
|---|---|
| DE20107005U1 (en) | 2001-08-16 |
| DE50200451D1 (en) | 2004-06-24 |
| EP1253281A1 (en) | 2002-10-30 |
| ATE267336T1 (en) | 2004-06-15 |
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