EP3719208A1 - Montagerahmen für schächte und verfahren zum einbau oder austausch davon - Google Patents

Montagerahmen für schächte und verfahren zum einbau oder austausch davon Download PDF

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Publication number
EP3719208A1
EP3719208A1 EP20020138.2A EP20020138A EP3719208A1 EP 3719208 A1 EP3719208 A1 EP 3719208A1 EP 20020138 A EP20020138 A EP 20020138A EP 3719208 A1 EP3719208 A1 EP 3719208A1
Authority
EP
European Patent Office
Prior art keywords
key
frame
ground surface
access assembly
lifting
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.)
Granted
Application number
EP20020138.2A
Other languages
English (en)
French (fr)
Other versions
EP3719208B1 (de
EP3719208C0 (de
Inventor
Barry Turner
Simon John Gibson
Samantha Sarah Elizabeth Evans
Liam Mark Ratcliffe
Simon Turner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wrekin Holdings Ltd
Original Assignee
Wrekin Holdings Ltd
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
Application filed by Wrekin Holdings Ltd filed Critical Wrekin Holdings Ltd
Publication of EP3719208A1 publication Critical patent/EP3719208A1/de
Application granted granted Critical
Publication of EP3719208B1 publication Critical patent/EP3719208B1/de
Publication of EP3719208C0 publication Critical patent/EP3719208C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02D29/1445—Tools for positioning or removing cover frames
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
    • B66F19/005—Lifting devices for manhole covers
    • 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
    • E02D29/1454—Non-circular covers, e.g. hexagonal, elliptic

Definitions

  • This invention relates to the frame of a ground surface access assembly; and in particular to means of engaging the flange with lifting keys in order to facilitate initial installation or subsequent removal.
  • Ground surface access assemblies are widely employed in roadways and sidewalks/pavements.
  • such assemblies include a frame with a flange and hinged or removable cover portion.
  • Such covers are relatively heavy and need to be handled using approved lifting gear, in order to avoid possible injury to operatives during installation or servicing.
  • One or more Lifting Keys (in accord with BS 7903) are generally used to engage keyholes in the cover member. These keys engage the keyholes in a similar way to a key engaging a door-lock; that is by alignment of the key-blade with the keyhole, prior to insertion and the part rotation.
  • Such keyholes are difficult to produce by the metal casting procedures typically used to manufacture such assembly covers and are prone to blockage by sand (after casting) and also (in normal use) by debris.
  • An aim of the present invention is to provide a frame for a ground surface access assembly that is easier and safer to install or replace than existing frames because means for engaging lifting keys are provided on the frame; in particular on the frame flange, the frame side-walls, or both.
  • the invention comprises a ground surface access assembly frame surrounding and defining an aperture, with sidewalls that extend downwardly to connect to an outwardly extending flange portion: said frame comprising at least one key-engaging member that extends externally/outwardly from said frame, and further comprises a pair of spaced-apart members, located in a raised position relative to the general level of said flange portion; and a slot/recess located on the underside of each spaced-apart member, configured to allow engagement of a lifting key (K) having a shaft (Ks) by firstly sideways movement of the shaft (Ks) to a position between said spaced-apart members followed by upward movement of said key (K) towards said underside slots/recesses.
  • K lifting key
  • the key-engaging member may extend upwardly from said flange portion or may extend outwardly from a said frame sidewall. Alternatively, the key-engaging member may extend upwardly from said flange portion and outwardly from a said sidewall.
  • the underside slots/recesses may comprise a planar/flat upper face and at least one perpendicularly extending flat/planar side face. Where there are two (spaced-apart) side faces they, advantageously, restrain pivotal/rotational movement of the key shaft (Ks) relative to the frame, during the lifting sequence; especially where the centre-of-gravity of the frame is such that it otherwise wobble during lifting, and so result in an unstable, and less-safe lift.
  • the slots/recesses may be arcuate or semi-circular in cross section.
  • the two spaced-apart members may be connected by an intermediate roof member to form a roof portion that presents a generally "U-Shaped” aperture; this allows sideways access to the lifting key shaft (Ks).
  • This "U-Shaped” aperture also advantageously results in movement of a suitably configured key shaft (Ks) relative to the frame, during lifting, being restrained, owing to close proximity of the key shaft (Ks) to (or abutment against) the inner (e.g. semi-circular) sidewall of said aperture.
  • a bridge member may connect the roof portion to the sidewall.
  • the key-engaging member(s) may further comprise a sloping portion that extend downwardly from the outer end of each spaced-apart member and adjoin said flange portion.
  • the flange portion is generally flat/planar and extends underneath said spaced-apart members.
  • the flange portion may not extend underneath said pair of key engaging members and the space there-between.
  • the key-engaging member is configured to allow engagement of a lifting key (K) by firstly sideways movement of the shaft of said key (K) to a position between said spaced-apart members followed by upward and non-rotational movement of said key (K) towards said underside slots/recesses.
  • the invention comprises a ground surface access assembly frame surrounding and defining an aperture, with sidewalls that extend downwardly to connect to an outwardly extending flange portion: said frame comprising at least one key-engaging member that extends externally/outwardly from said frame, and further comprises a pair of spaced-apart members that in use are engaged by a lifting key (K) having a shaft (Ks) by firstly sideways movement of the shaft (Ks) to a position between said spaced-apart members followed by upward movement of said key (K) towards said spaced-apart members.
  • K lifting key
  • Ks having a shaft (Ks) by firstly sideways movement of the shaft (Ks) to a position between said spaced-apart members followed by upward movement of said key (K) towards said spaced-apart members.
  • the invention comprises a method of lifting a ground surface access assembly frame according to any preceding claim, during initial installation or replacement; wherein said frame has at least two key-engaging members located on opposite sides of said frame; using a pair of keys (K1, K2), each comprising a main shaft (Ks) and at least one radially extending side-arm (Kb), that in use engage said key engaging members; comprising the following steps:
  • step (a) comprises: engaging said lifting keys (K1, K2) within each key-engagement members by firstly sideways none-rotational movement and then secondly movement of said keys (K1, K2), both movements being relative to said frame.
  • the invention comprises a ground surface access assembly frame surrounding and defining an aperture, with sidewalls that extend downwardly to connect to an outwardly extending flange portion: said frame comprising at least one key-engaging member that extends externally from said frame, and further comprises a pair of spaced-apart members, located in a raised position relative to the general level of said flange portion; each of said spaced apart members having an underside slot configured to allow engagement of a lifting key (K) by firstly sideways movement of the shaft of said key (K) to a position between said spaced-apart members followed by upward movement of said key (K) towards said underside slots.
  • a lifting key K
  • the ground surface access assembly frame key-engaging member comprises a roof portion that has an aperture defining a keyhole and is located in a raised position relative to said flange portion.
  • the key-engaging member may further comprise a downwardly extending portion that extends from an outer end of said roof portion.
  • the underside surface of said roof portion may be arcuate or semi-circular in cross section.
  • the ground surface access assembly frame key engaging member comprises a pair of spaced-apart key-engaging slots that are located side-by-side.
  • a pair of spaced-apart key-engaging slots share a single roof portion.
  • the shared single roof portion may contain a generally "U-Shaped" aperture that allows access for the shaft (Ks) of a lifting key (K).
  • said key-engaging member extends upwardly from said flange portion.
  • said key-engaging member extends outwardly from said frame sidewall.
  • said key-engaging member extends upwardly from said flange portion and outwardly from a said sidewall.
  • the frame flange portion is generally flat/planar and extends underneath said pair of key engaging slots and the space there-between.
  • the ground surface access assembly frame (10) may further comprise a flange portion that is generally flat/planar but does not extend underneath said key-engaging slot(s).
  • the invention comprises a ground surface access assembly frame surrounding and defining an aperture; said frame comprising sidewalls that extend downwardly to connect to an outwardly extending flange portion: and further comprising a key-engaging member that extends externally from said frame: configured to allow engagement of a lifting key (K) by firstly sideways none-rotational movement and then secondly upward movement of said key (K), both movements being relative to said frame.
  • the invention comprises a ground surface access assembly frame surrounding and defining an aperture; said frame comprising sidewalls that extend downwardly to connect to an outwardly extending flange portion; and further comprising at least one key-engaging member that extends externally from said frame: configured to allow engagement of a lifting key by firstly sideways movement and then secondly upward movement of said key (K), both movements being relative to said assembly frame.
  • the invention comprises a method of lifting a ground surface access assembly frame according to present invention, during initial installation or replacement; wherein said frame has at least two key-engaging members located on opposite sides of said frame; using a pair of keys (K1, K2), comprising a main shaft with at least one radially extending side-arm, that in use engages said key engaging members; and comprising the following steps:
  • Figure 1 shows a perspective view illustration of a ground surface access assembly frame (10) according to a first embodiment of the invention.
  • the frame (10) surrounds and defines an aperture and comprises four sidewall portions (12) that extend downwardly; three of these sidewall portions (12) being connected via curved intermediate portions (12a) to three outwardly extending and generally planar flange portions that together form a flange (14).
  • the flange (14) further comprises a member(s) configured to allow engagement of a lifting key; thus a key-engaging member (16) extends upwardly the upper surface of at least one of said three flange portions.
  • FIG 2 shows an enlarged perspective view of the key-engaging member (16) illustrated in Figure 1 , that provides a pair of spaced-apart key-engaging slots (18) defined by a pair of side-by-side, spaced-apart roof members (20) a pair of inclined/sloping portions (22) and a pair of rear sidewall portions (24). These two spaced-apart slots are (left and right hand) mirror images of one-another.
  • the pair of inclined/sloping sidewall portions (22) extend downwardly from said spaced-apart members (20) and away from each other at an acute angle (in this illustration at ca. 45°) to the flange portion (14).
  • Each key-engaging slot (18) is defined by a rear sidewall portion (24) that extends upwardly from the flange portion (14), preferably in a vertical direction; again leading to and being integrally formed with said spaced-apart member (20).
  • the illustration shows the normal, generally planar, underside of the flange portion (14) being interrupted by the key-engaging member (16).
  • the flange portion (14) is preferably made by casting ferrous material, this open-bottom arrangement of the key-engaging member facilitates the casting process.
  • the frame member may be uninterrupted (as described below in the second embodiment).
  • the sidewall portions (22) may extent upwardly in a generally vertical direction.
  • pair of key-engaging slots (18) are preferably formed by two/three generally perpendicular walls (20, 22, 24), these slots may comprise a continuous curved face, when using a lifting key that has a pair of (outwardly extending) blades of circular cross section.
  • Figures 3a and 3b show how a lifting key normally engages the key-engaging member (16) comprising a pair of spaced-apart members (20a, 20b).
  • Figure 3a shows the blade (Kb) attached to the shaft (Ks) of a lifting key (K); where the shaft (Ks) is positioned near to and in front of an entry gap (G) located between the spaced-apart members (20a, 20b), such that the shaft (Ks) can be moved in a direction generally perpendicular to the rim of the flange portion (14), until it is located within the entry gap (G); the shaft (Ks) and attached blade (Kb) are then vertically lifted so that the two upper side faces of the key blade (Kb) engage the recesses (18) that extend downwardly from the underside face of the spaced-apart members (20a, 20b).
  • the required engagement is achieved simply by: firstly sideways movement (towards the frame sidewall (12); and then secondly upward (vertical) movement of the key shaft (Ks) and blade (Kb); both movements being relative to the frame (10).
  • firstly sideways movement towards the frame sidewall (12); and then secondly upward (vertical) movement of the key shaft (Ks) and blade (Kb); both movements being relative to the frame (10).
  • the more complex movement where a key is first aligned with a key-hole, then inserted, and then rotated to engage
  • the key-engaging member is less likely to become blocked with debris than a conventional keyhole, as the side entry arrangement is less susceptible such blockage, and can in any event be unblocked more easily.
  • FIGS 4 to 6 illustrate a second embodiment of the present invention again using a pair of spaced-apart key-engaging slots (118) but in this case sharing a common roof portion (120) and having an uninterrupted flange portion (114a) underneath.
  • Figure 4 shows a perspective view illustration of a ground surface access assembly frame (10) according to this second embodiment of the invention.
  • the frame (110) surrounds and defines an aperture and comprises four sidewall portions (112) that extend downwardly; three of these sidewall portions (112) being connected to three outwardly extending flange portions are that together form a flange (114).
  • the flange (114) further comprises two members configured to allow engagement of a pair of lifting keys (K1 and K2); these key-engaging member (116) again being located on the upper surface of opposite (opposing) flange portions.
  • K1 and K2 the pair of lifting keys
  • the figure shows the pair of lifting keys engaged such that the frame can be moved either manually; or more preferably using approved lifting gear (not shown).
  • Figure 5 shows an enlarged perspective view of the key-engaging member (116) illustrated in Figure 4 , that provides a pair of spaced-apart key-engaging slots (118) defined by a single of roof portion (120) a pair of sidewall portions (122) and a single rear-wall portion (124). These two spaced-apart slots are (left and right hand) mirror images of one-another.
  • the pair of sidewall portions (122) extend generally vertically upwards from the upper surface of a flange portion (114) and lead to the single roof portion (120).
  • Each key-engaging slot (118) is further defined by a single rear-wall portion (124) that extends upwardly from the frame flange (114), preferably in a vertical direction; again leading to and being integrally formed with said single roof portion (120).
  • This single roof portion (120) has a U-Shaped aperture provided to allow access of a lifting key shaft (Ks) and also to form two separate (spaced apart) engagement slots (118).
  • the two sidewalls portions (122) and the single rear-wall portion have are generally U-Shaped cross-section, when viewed from above.
  • Figure 5 also shows the normal, generally planar, underside of the flange (114) being uninterrupted by the key-engaging member (116).
  • This configuration of the key-engaging member facilitates/assists secure bedding of the frame upon its support surface.
  • the frame member may be interrupted (as described above in the first embodiment).
  • each of the spaced-apart key-engaging slots (118) are formed by two/three generally perpendicular walls (120, 122, 124), these slots may comprise a continuous curved face - when using a lifting key that has a pair of (outwardly extending) blades (Kb) of circular cross section.
  • FIGs 6a and 6b show how a lifting key can engage a key-engaging member (116).
  • the two spaced-apart members (120a, 120b) are connected by an intermediate roof member (120c) to form roof portion (120) presenting a generally "U-Shaped” aperture that allows sideways access the lifting key shaft (Ks).
  • Figure 6a shows the blade (Kb) attached to the shaft (Ks) of a lifting key (K); where the shaft (Ks) is positioned near to and in front of an entry gap (G) located between the spaced-apart members (120a, 120b), such that the shaft (Ks) can be moved in a direction generally perpendicular to the rim of the flange portion (14), until it is located within the entry gap (G); the shaft (Ks) and attached blade (Kb) are then vertically lifted so that the two upper side faces of the key blade (Kb) engage the recesses (118) that extend downwardly from the underside face of the spaced-apart members (120a, 120b).
  • the required engagement is achieved simply by: firstly sideways movement (towards the frame sidewall (112); and then secondly upward (vertical) movement of the key shaft (Ks) and blade (Kb); both movements being relative to the frame (10).
  • firstly sideways movement towards the frame sidewall (112); and then secondly upward (vertical) movement of the key shaft (Ks) and blade (Kb); both movements being relative to the frame (10).
  • the more complex movement where a key is inserted in a key-hole, and then rotated to engage
  • the key-engaging member is less likely to become blocked with debris than a conventional keyhole, as the side entry arrangement is less susceptible such blockage, and can in any event be cleaned more easily.
  • Figure 7 illustrates a variant of the second embodiment where a bridge member (128) connecting the roof portion (120) to the sidewall (112) is provided.
  • Figure 8 illustrates the key-engagement member (216) and part of the sidewall (212) and flange (214) for a further embodiment where the key-engagement member (216) comprises a pair (only one shown) of spaced-apart members (220) extending outwardly from a frame sidewall (212) the engagement slots (218) in the underside of the spaced-apart members (220) being semi-circular or arcuate in cross-section, this being particularly suitable when the blade (Kb) of the lifting key (K) is circular in cross-section.
  • the engagement-slots (218) may be defined by a sidewall, the roof member (220) and a portion that extends downwardly from an outer end of this roof portion (220), as described in the earlier embodiments.
EP20020138.2A 2019-03-30 2020-03-26 Montagerahmen für schächte und verfahren zum einbau oder austausch davon Active EP3719208B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1904508.7A GB2582759B (en) 2019-03-30 2019-03-30 A ground surface access assembly frame and method of installation or replacement

Publications (3)

Publication Number Publication Date
EP3719208A1 true EP3719208A1 (de) 2020-10-07
EP3719208B1 EP3719208B1 (de) 2023-11-15
EP3719208C0 EP3719208C0 (de) 2023-11-15

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EP20020138.2A Active EP3719208B1 (de) 2019-03-30 2020-03-26 Montagerahmen für schächte und verfahren zum einbau oder austausch davon

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GB (1) GB2582759B (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244034A1 (de) * 1982-11-27 1984-05-30 Duroplaststein Gmbh, 3549 Volkmarsen Erhaertende masse zum verfuellen eines fugenspaltes unter einbauteilen in strassendecken
JPH02209506A (ja) * 1989-02-07 1990-08-21 Showa Electric Wire & Cable Co Ltd マンホール用蓋枠の舗装切削装置
US6276732B1 (en) * 2000-01-20 2001-08-21 Omni-Lift U.S.A. Lifting device
US20130089373A1 (en) * 2011-10-11 2013-04-11 Ameren Corporation Systems and methods for venting gas in the event of an explosion in a space covered by a manhole cover
KR101454224B1 (ko) * 2014-03-14 2014-10-23 삼서공업 주식회사 노면의 파쇄와 절단을 수행하는 가변형 원형절단기와 콤파스형 높이조절기를 이용한 맨홀 보수공법
FR3059018A1 (fr) * 2016-11-22 2018-05-25 Fonderies De Brousseval & Montreuil Trappe de sol etanche a plaques multiples

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Publication number Priority date Publication date Assignee Title
BE861949A (fr) * 1977-01-05 1978-04-14 Dumortier Robert Dispositif de verrouillage pour tampon de regard de chaussee ou autres
NL1010356C1 (nl) * 1998-10-20 1999-02-01 Stichting Dienst Waterbeheer E Haak voor het lichten van putdeksels.
DE20014499U1 (de) * 2000-08-22 2001-01-11 Baumert Johannes Hilfswerkzeug für das Aufsetzen und Abnehmen von Straßenablaufdeckeln
DE20017721U1 (de) * 2000-10-16 2001-02-22 Baumert Johannes Hilfswerkzeug für das Aufsetzen und Abnehmen von Schmutz- und Regenwasser-Schachtdeckeln
WO2012042478A1 (en) * 2010-09-29 2012-04-05 Sika Technology Limited Improvements in/or and relating to utility chambers and surrounds and methods therfor
US20190161936A1 (en) * 2016-10-10 2019-05-30 Trumbull Manufacturing, Inc. Cover assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244034A1 (de) * 1982-11-27 1984-05-30 Duroplaststein Gmbh, 3549 Volkmarsen Erhaertende masse zum verfuellen eines fugenspaltes unter einbauteilen in strassendecken
JPH02209506A (ja) * 1989-02-07 1990-08-21 Showa Electric Wire & Cable Co Ltd マンホール用蓋枠の舗装切削装置
US6276732B1 (en) * 2000-01-20 2001-08-21 Omni-Lift U.S.A. Lifting device
US20130089373A1 (en) * 2011-10-11 2013-04-11 Ameren Corporation Systems and methods for venting gas in the event of an explosion in a space covered by a manhole cover
KR101454224B1 (ko) * 2014-03-14 2014-10-23 삼서공업 주식회사 노면의 파쇄와 절단을 수행하는 가변형 원형절단기와 콤파스형 높이조절기를 이용한 맨홀 보수공법
FR3059018A1 (fr) * 2016-11-22 2018-05-25 Fonderies De Brousseval & Montreuil Trappe de sol etanche a plaques multiples

Also Published As

Publication number Publication date
GB2582759B (en) 2021-03-24
GB2582759A (en) 2020-10-07
EP3719208B1 (de) 2023-11-15
GB201904508D0 (en) 2019-05-15
EP3719208C0 (de) 2023-11-15

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