GB2299357A - Access frame - Google Patents
Access frame Download PDFInfo
- Publication number
- GB2299357A GB2299357A GB9506198A GB9506198A GB2299357A GB 2299357 A GB2299357 A GB 2299357A GB 9506198 A GB9506198 A GB 9506198A GB 9506198 A GB9506198 A GB 9506198A GB 2299357 A GB2299357 A GB 2299357A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wall
- wall portion
- lid
- frame
- sealing member
- 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
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
- E02D29/1463—Hinged connection of cover to frame
-
- 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
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)
Abstract
An access frame has a hinged lid L which is arranged to prevent ingress of fluid. One wall M1 of the frame is of channel section with an outer wall 10 and an inner wall 11. The outer wall has a back wall 13, an overhanging roof 14 and a depending wall 15. Between the walls 14, 15 are bridges for mounting a hinge pin. A rail 19 projects from wall 15 to support a seal. The movement of the lid is such that the seal is not damaged during greasing thereof. A second seal 22 seals against the underside of the lid.
Description
ACCESS FRAMES
The invention relates to access frames, e.g. for access to pits or floors, vaults, drains, ceilings and the like.
It is an object of this invention to provide a hinge access frame comprising a frame member defining an enclosure to receive a hinged lid, and which is easily sealed against passage of fluid, e.g. liquid or gas therethrough.
According to the invention, there is provided an access frame comprising a frame deflning an enclosure and a lid to be located thereon, the frame being made up of wall members, the lid being hinged by a hinge member to a wall member of the frame, the wall member comprising an outer wall portion and an inner wall portion with a gap in between; one end of the hinge member being pivotally connected to the outer wall portion and the other end being connected to the underside of the lid, the hinge member passing through the gap; a sealing member being present on the inner wall of the outer wall portion whereby when lid is located on the frame the lid is substantially level with the top of the outer wall portion and the sealing member seals the lid against passage of fluid between the lid and the wall member.
Preferably the sealing member extends substantially continuously along the inner wall of the outer wall portion. Preferably the sealing member is a gasket mounted on a ledge extending from the outer wall portion into the gap.
In a preferred aspect the inner wall portion is shorter than the outer wall portion and a second sealing member is present on the inner wall portion.
Preferably the second sealing member is mounted in the top edge of the inner wall portion.
Preferably the outer wall portion has a top portion of inverted channel shape and the hinged member comprises an arm incorporating a crank and the free end of the arm is pivotally mounted within the channel shape.
In order that the invention may be well understood it will now be described by way of example only, with reference to the accompanying diagrammatic drawings, in which:
Figure 1 is a vertical section through a frame of the invention with the
lid down; and
Figure 2 is a section as in Figure 1 showing the frame open and the
lid in the up condition.
The frame comprises four wall members M of which only one M1, carrying a hinge member H for a lid L, is shown in detail. The wall member M1 comprises a length of channel section having an outer wall portion 10 and an inner wall portion 11 joined together by a floor 12. The outer wall portion has a back wall 13 and an overhanging roof 14 from which depends a shorter vertical wall 15 generally parallel to the back wall 13. Within the overhang defined by the roof 14, the back wall 13 and the short wall 15 are bridges 16. A horizontal hinge pin 17 extends through the bridges 16 parallel to the back wall 13. The bridges 16 rest on ledges 18. A rail 19 projects towards the wall portion 11 about half way up the vertical wall 15.
A sealing member 20 is secured to the rail 19. The member is formed of compressible thermoplastic material and has an upper tubular body 21. The member extends continuously along the wall M1.
The inner wall portion 11 is a single wall and is shorter than the outer wall portion 13. A solid sealing rod 22 is partially received in a slot 23 in the top of the wall 11, at about the level of the member 20. A rod extends continuously along the wall 11. There is a gap G between the vertical wall 15 and the inner wall 11.
A lid L is to be mounted in the enclosure, extending across the gap G towards the opposite side, not shown. A hinge member H comprises a cranked arm 24, one end 25 of which is looped about the hinge pin 17 and the other 26 forms a plate which is bolted to the underside of the lid L near its outer edge. The access frame is embedded in a body of concrete, e.g. a standing area for vehicles, a delivery station or the like, having access points to underground passages. Because of the cranks in the hinge arm, the lid L can rest generally horizontal and level with the roof 14, the seal member 20 being compressed (Figure 1) and resting on the seal member 22.
As a result, fluids, e.g. water, spilled fuel, etc. will not flow into the access door. Because of the cranks in the hinge arms, the lid L may be raised to the condition shown in Figure 2, (for access) and the seals will not be damaged.
The access frame may include other components such as lilting arms, stays, latches, locks and the like.
Claims (6)
1. An access frame comprising a frame deigning an enclosure and a lid
to be located thereon, the frame being made up of wall members, the
lid being hinged by a hinge member to a wall member of the frame,
the wall member comprising an outer wall portion and an inner wall
portion with a gap in between; one end of the hinge member being
pivotally connected to the outer wall portion and the other end being
connected to the underside of the lid, the hinge member passing
through the gap; a sealing member being present on the inner wall of
the outer wall portion whereby when lid is located on the frame the
lid is substantially level with the top of the outer wall portion and the
sealing member seals the lid against passage of fluid between the lid
and the wall member.
2. A frame according to Claim 1, wherein the sealing member extends
substantially continuously along the inner wall of the outer wall
portion.
3. A frame according to Claim 1 or 2, wherein the inner wall portion is
shorter than the outer wall portion and a second sealing member is
present on the inner wall portion.
4. A frame according to Claim 3, wherein the second sealing member is
mounted in the top edge of the inner wall portion.
5. A frame according to any preceding Claim, wherein the first sealing
member is a gasket mounted on a ledge extending from the outer wall
portion into the gap.
6. A frame according to any preceding Claim wherein the outer wall
portion has a top portion of inverted channel shape and the hinged
member comprises an arm incorporating a crank and the free end of
the arm is pivotally mounted within the channel shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9506198A GB2299357B (en) | 1995-03-27 | 1995-03-27 | Access frames |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9506198A GB2299357B (en) | 1995-03-27 | 1995-03-27 | Access frames |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9506198D0 GB9506198D0 (en) | 1995-05-17 |
GB2299357A true GB2299357A (en) | 1996-10-02 |
GB2299357B GB2299357B (en) | 1998-04-08 |
Family
ID=10771952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9506198A Expired - Lifetime GB2299357B (en) | 1995-03-27 | 1995-03-27 | Access frames |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2299357B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327447A (en) * | 1997-07-16 | 1999-01-27 | Stuart Entwhistle | Drainage grid assembly |
GB2395217A (en) * | 2002-11-18 | 2004-05-19 | Clover Rainer | Access cover |
EP2933383A1 (en) * | 2014-04-15 | 2015-10-21 | Harde Staal ApS | Hinged cover assembly |
WO2020021464A1 (en) * | 2018-07-26 | 2020-01-30 | Ironmade International S.R.L. | Manhole cover |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114718120A (en) * | 2022-05-12 | 2022-07-08 | 浙江章达轻工机械厂 | Connecting rod auto-lock manhole structure |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1050685A (en) * | ||||
GB2163467A (en) * | 1984-07-13 | 1986-02-26 | Turner Bros | Manhole cover with torsion spring hinge to facilitate opening |
-
1995
- 1995-03-27 GB GB9506198A patent/GB2299357B/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1050685A (en) * | ||||
GB2163467A (en) * | 1984-07-13 | 1986-02-26 | Turner Bros | Manhole cover with torsion spring hinge to facilitate opening |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327447A (en) * | 1997-07-16 | 1999-01-27 | Stuart Entwhistle | Drainage grid assembly |
GB2327447B (en) * | 1997-07-16 | 2001-07-25 | Stuart Entwhistle | A Drainage grid assembly |
GB2395217A (en) * | 2002-11-18 | 2004-05-19 | Clover Rainer | Access cover |
EP2933383A1 (en) * | 2014-04-15 | 2015-10-21 | Harde Staal ApS | Hinged cover assembly |
WO2020021464A1 (en) * | 2018-07-26 | 2020-01-30 | Ironmade International S.R.L. | Manhole cover |
Also Published As
Publication number | Publication date |
---|---|
GB2299357B (en) | 1998-04-08 |
GB9506198D0 (en) | 1995-05-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PE20 | Patent expired after termination of 20 years |
Expiry date: 20150326 |