WO2006026824A1 - Puits d'acces extensible - Google Patents

Puits d'acces extensible Download PDF

Info

Publication number
WO2006026824A1
WO2006026824A1 PCT/AU2005/001367 AU2005001367W WO2006026824A1 WO 2006026824 A1 WO2006026824 A1 WO 2006026824A1 AU 2005001367 W AU2005001367 W AU 2005001367W WO 2006026824 A1 WO2006026824 A1 WO 2006026824A1
Authority
WO
WIPO (PCT)
Prior art keywords
pit
base
service line
sections
pit according
Prior art date
Application number
PCT/AU2005/001367
Other languages
English (en)
Inventor
George Magoulias
Original Assignee
Magoulias, Francisca
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from AU2004905115A external-priority patent/AU2004905115A0/en
Application filed by Magoulias, Francisca filed Critical Magoulias, Francisca
Publication of WO2006026824A1 publication Critical patent/WO2006026824A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole
    • 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
    • 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
    • E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination

Definitions

  • This invention relates to a pit for installation in the ground in order to provide access to an underground location such as an underground installation.
  • the underground installation may be of any appropriate type, such as for example an underground service line including a telecommunication line, an electrical supply line, a gas supply line, a water supply line, a reticulation line, a waste-water line or a sewage line.
  • the invention has been devised particularly, although not necessarily solely, as a service pit to provide access to junctions and other components incorporated within telecommunication lines.
  • Service pits are commonly used to provide access at various locations to underground telecommunication lines.
  • a service pit comprises a sidewall structure which extends from ground level to the location of the underground installation, with a cover being provided to close the open top of the pit.
  • a pit is installed so that the cover is at about surrounding ground level.
  • the surrounding ground level may comprise an unprepared surface constituted by the surrounding ground material (for example, sand) or a prepared surface such as a surface paved with bitumen, concrete or paving blocks.
  • a pit comprising a body defining a central pit area, the body having a side wall structure surrounding the central pit area and an open top adapted to receive a closure, the body comprising upper and lower body sections moveable one relative to another for varying the depth of the pit area, the two sections being in partial overlapping relationship, and means being provided for releasably securing the overlapping sections together.
  • the sidewall structure is selectively extendible and contractible for varying the level of the open top.
  • the securing means may comprise an upper set of locking holes in the upper body section and a lower set of locking holes in the lower body section, the locking holes in each set being spaced one with respect to another at vertically extending intervals, whereby one hole in one set can register with one hole in another set to provide a pair of aligned holes for receiving a locking element for securing the two body sections together.
  • the locking element comprises a locking pin.
  • locking holes are provided on two opposed sides of the body. More preferably, the locking holes are provided in pairs, with each pair comprising two sets of locking holes positioned one adjacent the other. This arrangement is advantageous in that affords stable coupling between the upper and lower body sections when connected together by way of the securing means.
  • the two locking pins can be defined by a common locking member having two projections each defining one of the locking pins.
  • the common locking member would comprise a substantially U-shaped element, with each leg of the U defining one of the locking pins.
  • a sealing means may be provided for preventing ingress of material into the gap between the overlapping upper and lower body sections.
  • the sealing means may comprise a brush seal fixed to one of the body sections and adapted to sealingly brush against the other body section as it moves relative thereto.
  • the body defining the pit area may be provided with a base.
  • the base may have provision for the pit to be fitted around a service line already installed underground. This is particularly advantageous as it would avoid the need for the service line to be cut in order for it to be accommodated within the pit.
  • telecommunication service pits which are fitted in position in relation to an existing underground telecommunications line, it is necessary to cut the telecommunications line in order for it to be fed into the service pit. This is particularly disadvantageous, as it requires technical personnel to cut the service line so that it can be fed in to the pit and thereafter reconnect the service line so that it is operationally intact.
  • the base is moveable between open and closed conditions, whereby with the base in the open condition the pit can be positioned on the service line and thereafter the base moved into the closed condition so as to enclose a portion of the service line within the pit.
  • the base comprises two moveable base sections each hingedly mounted onto opposed sides of the body, with the two base sections cooperating to define two opposed ports through which the service line can extend when the base is in the closed condition.
  • the ports are provided with sealing means to provide a seal between the service line and the pit body.
  • Each sealing means may comprise a brush seal having bristles which contact the service line passing through the respective port.
  • Each moveable base section may be provided with a handle to facilitate manual manipulation thereof for closing the base with access from the interior of the pit.
  • a locking means may be provided for releasably locking the base sections in the closed condition.
  • a pit comprising a body defining a central pit area, the body having a side wall structure surrounding the central pit area, an open top adapted to receive a closure and a base, the base having provision for the pit to be fitted around a service line already installed underground.
  • the base is moveable between open and closed conditions, whereby with the base in the open condition the pit can be positioned on the service line and thereafter the base moved into the closed position so as to enclose a portion of the service line within the pit.
  • Figure 1 is a schematic view of a service pit according to the embodiment
  • Figure 2 is a schematic view showing installation of the service pit about an underground service line
  • Figure 3 is a schematic perspective view illustrating the service pit after installation in the ground about the underground service line.
  • Figure 4 is a cross-sectional side view of the pit in the installed condition shown in Figure 3.
  • the embodiment shown in the drawings is directed to a service pit 10 for providing access to a telecommunications service line 11 installed underground.
  • the telecommunications pit 10 is positioned in a hole 13 in the ground at a location where access is required to the underground service line 11.
  • the access pit 10 has been devised so that it can be installed in position about the telecommunications line 11 without any disruption to operation of the service line. In particular, there is no need for the service line to be severed in order for the pit 10 to be positioned about it.
  • the pit 10 is also designed so that its depth is selectively variable in order to accommodate the depth requirements of the hole 13 and to also accommodate any subsequent changes to the relative height of the surrounding ground level 14.
  • the pit 10 comprises a body 15 conveniently formed of plastics material such as polyethylene.
  • the body 15 has a sidewall structure 17, a base 19 and an open top 21 which accommodates a removable cover 23.
  • the body 15 defines a central pit area 25 which is accessible through the open top 21 upon removal of the cover 23.
  • the upper end of the body 15 incorporates a peripheral lip 27 surrounding a ledge 29 on which the cover 23 is supported when in position to close the open top. In this way, the top of the cover 23 is flush with the top of the lip 27 when the cover is in position closing the open top.
  • the body comprises an upper body section 31 and a lower body section 33.
  • the two body sections 31 , 33 are sized so that the upper body section 31 is slidably received within the lower body section 33.
  • the two body sections 31 , 33 are in telescopic relationship, as best seen in Figure 4 of the drawings, whereby the effective depth of the central pit area can be varied by moving one body section with respect to the other.
  • the sidewall structure 17 is extendible and contractible.
  • the lower body section 33 has a peripheral lip 34 at the top end thereof.
  • Means 35 are provided for selectively locking the upper and lower body sections 31 , 33 together.
  • the locking means 35 comprises two groups of holes 37 positioned on opposed sides of the wall structure 17.
  • Each group of holes 37 comprises two sets of upper holes 39 in the upper body section 31 and two sets of holes 41 in the lower body section 33.
  • the two sets of upper holes 39 are positioned one alongside the other, and also the two sets of lower holes 41 are positioned alongside each other, as shown in the drawings.
  • Each set of holes comprises a plurality of holes 43 arranged at spaced intervals in a vertical row.
  • the upper set of holes 39 comprises first and second rows 45 and 47
  • the lower set of holes 41 comprises first and second rows 48, 49.
  • the two first rows 45, 48 are in vertical alignment, as are the two second rows 47, 49.
  • the two body sections 31 , 33 can be moved telescopically one with respect to the other and secured in any position corresponding to a location where there is alignment between holes in the upper set of holes 39 and holes in the lower set of holes 41.
  • the securing means 35 further comprises locking pins 51 adapted to be received in the aligned holes thereby to secure the upper and lower body sections 31 , 33 together.
  • the locking pins 51 for each group of holes 37 is defined by a common locking member 53.
  • the locking member 53 comprises a U-shaped member having two leg portions 55 interconnected by a bridge portion 57. Each leg portion 55 provides a respective one of the locking pins 51.
  • a sealing means 61 is provided at the overlap between the upper and lower body sections 31 , 33 to prevent ingress of dirt and other matter into the gap therebetween. It is particularly useful to exclude dirt and debris from the gap between the overlapping body sections 31 , 33 as it can contribute to jamming of the two body sections together at some later stage when there is a need to move the upper section relative to the lower section.
  • the sealing means 61 comprises a brush seal 63 having a plurality of bristles 65 mounted on the upper face of the lip 34 provided on the lower body section 33.
  • the bristles 65 extend inwardly and brush against the exterior surface of the upper body section 31 , as best seen in Figure 4 of the drawings.
  • an internal brace 64 is optionally provided for the purpose of providing internal structural support to the body 15. This can be important in circumstances where the body 15 is constructed of plastics material and the surrounding ground surface is likely to be subjected to high loadings which could be transferred through the ground to the pit.
  • the base 19 is constructed so as to allow the pit 10 to be positioned on the telecommunications service line 11 without interference to the operation of the latter. This is achieved by constructing the base 19 in two base sections 71 , 72 movable between open and closed conditions. Each base section 71 , 72 is pivotally connected at hinge 73 to a respective one of opposed sides of the wall structure 17 for movement between an open condition as shown in Figure 2 and a closed condition as shown in Figure 3. In moving towards the open condition, each base section 71 , 72 pivots downwardly and outwardly away from the central pit area 25, thereby allowing the bottom edge of the sidewall structure 17 to rest upon the telecommunications service line 11 , as shown in Figure 2.
  • the base sections 71 , 72 can be pivoted inwardly and upwardly so as to embrace the telecommunications service line 11 , as shown in Figure 3.
  • the base sections 71 , 72 each have "cut-out" portions 75 which cooperate to define a port 77 at each end through which the telecommunication service line 11 extends.
  • the port 77 is provided with a seal 79 for sealing between the body 15 of the pit and the telecommunications service line 11 to inhibit ingress of dirt and other unwanted matter.
  • the seal 79 comprises a brush seal 81 constructed in two brush sections 82, 83, one associated with each of the base sections 71 , 72, as best seen in Figure 2.
  • the brush seal 81 comprises bristles 85 which contact and lay against the telecommunications service line 11 for sealing interaction therewith.
  • each hinge based section 71 , 72 is provided with a handle for grasping the respective base section from the interior of the service pit.
  • a user would be kneeling on the ground surrounding the pit, reaching into the pit and grasping the base sections 71 , 72 by way of the handles to pivot them inwardly and upwardly from the open condition to the closed condition.
  • Locking means 91 are provided for selectively locking the two base sections 71 , 72 in the closed condition.
  • the locking means 91 can be of any appropriate form.
  • the pit 10 may be used to provide a new pit for accessing the service line 11 , or alternatively a replacement pit for a pre-existing pit.
  • a new pit for accessing the service line 11
  • a replacement pit for a pre-existing pit.
  • the pre-existing pit is removed and the replacement pit installed, conveniently using the same hole for access to the service line 11.
  • the two base sections 71 , 72 are moved into the open condition, and the lower body section 33 is inserted into the hole.
  • the lower body section 33 is rested on the service line 11 , and then the base section 71 , 72 are pivoted inwardly and upwardly so as to embrace the service line 11 as previously described.
  • the upper body section 31 is then inserted into the lower body section 33 and moved telescopically with respect thereto until the top lip 27 is at an appropriate level with respect to the adjacent ground surface. Any minor height adjustments are then made to ensure that are holes 43 within the hole groups 37 in registration in order to allow the locking pins 51 to be inserted in order to secure the upper and lower body sections 31 , 33 together.
  • Holes within the hole groups 37 not occupied by the locking pins 51 can be sealed with removable plugs (not shown).
  • the removable plugs are installed and removed from the inside of the pit.
  • the internal brace 64 can be installed if required.
  • the installation of the pit can then be completed in the same manner as a conventional pit, with the hole 13 being filled around the pit body 15.
  • the securing means 37 involving a series of holes which provide a series of available positions of the upper body section relative to the lower body section is particularly convenient, as it provides a simple yet reliable way of securing the two body sections together. It is then advantageous that the rows of holes be provided in pairs, as this enhances stability of the overall pit involving the upper and lower sections connected together. From the foregoing, it is apparent that the present embodiment provides a simple yet highly effective pit which can be readily adjusted as necessary to accommodate changes in ground level. Further, the pit can be easily installed about an existing service line without interrupting operation of the service line.

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)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

L'invention concerne un puits d'accès (10) destiné à être installé dans un trou (13) dans le sol afin de permettre l'accès à une canalisation souterraine (11). Le puits d'accès de l'invention (10) comprend un corps (15) qui définit une zone de puits centrale (25). Le corps (15) possède une structure de paroi latérale (17) qui entoure la zone de puits centrale (25), un dessus ouvert (21) apte à recevoir un couvercle (23), et une base (19). Le corps (15) comprend des sections de corps supérieure et inférieure (31, 33) qui peuvent se déplacer l'une par rapport à l'autre afin de faire varier la profondeur de la zone de puits (25). Les deux sections précitées (31, 33) se trouvent dans une relation de chevauchement partial, des moyens de verrouillage (35) permettant de fixer entre elles de manière libérable les sections en chevauchement (31, 33). Cet agencement permet d'offrir une structure de paroi latérale (17) qui peut être sélectivement étendue ou contractée afin de faire varier le niveau du dessus ouvert (21). La base (19) comprend des moyens qui permettent de fixer le puits d'accès (10) autour d'une canalisation (11) même lorsque cette dernière est déjà installée dans le sol, ce qui évite de devoir couper la canalisation (11) pour la placer à l'intérieur du puits (10).
PCT/AU2005/001367 2004-09-08 2005-09-08 Puits d'acces extensible WO2006026824A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004905115 2004-09-08
AU2004905115A AU2004905115A0 (en) 2004-09-08 Extendible Service Pit

Publications (1)

Publication Number Publication Date
WO2006026824A1 true WO2006026824A1 (fr) 2006-03-16

Family

ID=36036022

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2005/001367 WO2006026824A1 (fr) 2004-09-08 2005-09-08 Puits d'acces extensible

Country Status (1)

Country Link
WO (1) WO2006026824A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009092835A1 (fr) * 2008-01-22 2009-07-30 Morales Legupin Tomas Plaque d'égout réglable
WO2019238795A3 (fr) * 2018-06-12 2020-03-05 Wrekin Holdings Limited Ensembles d'accès à la surface du sol
RU199005U1 (ru) * 2020-02-19 2020-08-07 Роман Александрович Голдашевский Удлиняющая секция кабельного колодца
RU217398U1 (ru) * 2023-01-17 2023-03-30 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Кабельный колодец

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204077A (en) * 1987-04-24 1988-11-02 Robert Frazer And Sons Limited Prefabricated chamber for use underground to house pipes and fittings
DE19611946A1 (de) * 1995-03-27 1996-10-02 Josef Feit Schachtabdeckung bzw. Straßenkappe und Verfahren zum Einbau in eine Straße
EP1061183A2 (fr) * 1999-06-18 2000-12-20 Swintex Limited Améliorations dans ou se rapportant à la boíte de jonction souterraine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204077A (en) * 1987-04-24 1988-11-02 Robert Frazer And Sons Limited Prefabricated chamber for use underground to house pipes and fittings
DE19611946A1 (de) * 1995-03-27 1996-10-02 Josef Feit Schachtabdeckung bzw. Straßenkappe und Verfahren zum Einbau in eine Straße
EP1061183A2 (fr) * 1999-06-18 2000-12-20 Swintex Limited Améliorations dans ou se rapportant à la boíte de jonction souterraine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Q42 Week 199645, Derwent World Patents Index; Class Q41, AN 1996-444137 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009092835A1 (fr) * 2008-01-22 2009-07-30 Morales Legupin Tomas Plaque d'égout réglable
WO2019238795A3 (fr) * 2018-06-12 2020-03-05 Wrekin Holdings Limited Ensembles d'accès à la surface du sol
GB2590226A (en) * 2018-06-12 2021-06-23 Wrekin Holdings Ltd Ground surface access assemblies
GB2590226B (en) * 2018-06-12 2023-03-22 Wrekin Holdings Ltd Ground surface access assemblies
RU199005U1 (ru) * 2020-02-19 2020-08-07 Роман Александрович Голдашевский Удлиняющая секция кабельного колодца
RU217398U1 (ru) * 2023-01-17 2023-03-30 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Кабельный колодец

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