EP1838395A1 - Intermediate bracket for fall arrest cables/safety lines - Google Patents
Intermediate bracket for fall arrest cables/safety linesInfo
- Publication number
- EP1838395A1 EP1838395A1 EP05814098A EP05814098A EP1838395A1 EP 1838395 A1 EP1838395 A1 EP 1838395A1 EP 05814098 A EP05814098 A EP 05814098A EP 05814098 A EP05814098 A EP 05814098A EP 1838395 A1 EP1838395 A1 EP 1838395A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- cable
- intermediate bracket
- cut
- bracket
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0081—Equipment which can travel along the length of a lifeline, e.g. travelers
- A62B35/0087—Arrangements for bypassing lifeline supports without lanyard disconnection
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/02—Devices for lowering persons from buildings or the like by making use of rescue cages, bags, or the like
- A62B1/04—Single parts, e.g. fastening devices
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0043—Lifelines, lanyards, and anchors therefore
- A62B35/005—Vertical lifelines
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0043—Lifelines, lanyards, and anchors therefore
- A62B35/0068—Anchors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3276—Arrangements on buildings for connecting safety-lines
Definitions
- the present invention relates to a bracket for a fall arrest system particularly though not exclusively for use by linesmen working on electricity supply towers or pylons.
- Fall arrest systems comprising a cable which extends continuously up the tower have been developed, a linesman clipping on at anti-climbing device level via a sliding cleat, which jams if he falls.
- the cable of such a system should remain in tension.
- a slack cable can frap and fail due to wear and fatigue.
- the cable will be so long as to require an intermediate bracket or indeed several such brackets. Frapping of the cable in an intermediate bracket is a particular problem, with long runs of the cable on both sides of the bracket.
- the frapping problem can be relieved by ensuring that the cable remains tensioned.
- this can lead to the further problem of aeolian vibration in the wire, i.e. resonance of the wire induced by wind currents around the tower and in particular around the corner of the tower on which the fall arrest system is installed.
- the corner member will be of angle iron, which is particularly likely to induce uneven air flow.
- the object of the present invention is to provide an improved intermediate bracket.
- an intermediate bracket for a fall arrest system comprising:
- the intermediate bracket further comprises the improvement of:
- the polymer lining is comprised of two parts, each being split for positioning over the cable and introduction into the opposite ends of the sleeve. . .
- the significant advantage of the improved intermediate bracket is that as opposed to requiring threading from the end of the cable, a tedious operation liable to cause skimping on the number of the brackets and use of unsuitable erroneously threaded brackets at the wrong position along the cable, the intermediate brackets can be installed wherever required at whatever stage in the process of installation of the fall arrest system.
- the transverse portion of the cut-out could be angled towards the ends of the sleeve, it is preferably at right angles to the length of the sleeve.
- the polymer lining parts could be lengths of extruded tube, either of a size to fit between the cable and sleeve and slit for opening to fit over the cable or over-size and double-slit to remove a strip so that it can be compressed to a size to fit.
- the lining parts can be injection mouldings, again either moulded to be opened for fitting or closed for fitting, hi the preferred embodiment, the parts are polyamide mouldings, which are open for fitting to the cable and compressed to fit the sleeve. Also they have keys to fit the end portions of the cut-outs, mutually engaging formations to engage with each other for their retention in the sleeve and end rims for protection of the cable from the ends of the sleeve.
- the preferred lining parts are mutually complementarily formed so that identical parts pressed into the sleeve from opposite ends engage with each other.
- the wall thickness of the lining parts is such as to give the cable negligible freedom from lateral movement.
- Figure 1 is a perspective view of an intermediate bracket of a fall arrest system in accordance with the invention.
- Figure 2 is plan view sleeve memb er of the intermediate bracket of Figure 1;
- Figure 3 is a side view of the sleeve member;
- Figure 4 is a front view of the sleeve member;
- Figure 5 is a perspective view of a polyamide liner for the sleeve member.
- Figure 6 is a view similar to Figure 4 showing two liners fitted to the sleeve member.
- the intermediate bracket 1 is fixed to a flange F of a corner angle iron of a pylon or tower by means of a climbing bolt B.
- the bracket has a base member 2 comprised of stainless steel rod bent to U-shape.
- a welded-on cross bar 3 holds the U against spreading and provides a positioning stop for the bracket.
- the arms 4 of the U are bent 5 to bring a cable C of the fall arrest system (otherwise un-illustrated) into the bisector plane of the two flanges F 5 Ff of the angle iron.
- a sleeve member 6 is secured by screws 7 through a lug 8 into the ends of the arms 4.
- the member has a tongue 9 integral with the lug and a sleeve 10 as such.
- the sleeve is cut open (in practice, the sleeve member is likely to be made in finished configuration by sintering), by a transverse cut 11 and longitudinal cuts 12,14 on opposite sides from the transverse cut to respective ends of the sleeve. This allows the cable to be introduced into the sleeve by turning the bracket with respect to the cable or vice versa.
- the cable is centred in the sleeve by moulded polyamide inserts 21, which are moulded over size diametrically, with a longitudinal slot 22 sized to receive the cable and yet be closed with edges abutting when introduced into the sleeve.
- the inserts also have rims 23 which abut the ends of the sleeve and extend out to the diameter of the sleeve, thus protecting the cable from touching the ends of the sleeve.
- the inserts have anti-rotation swellings 24 which occupy the cuts 12,14. Also they have detents 25 on the inside of the swellings and opposite, complementary openings 26. These engage with each other when the inserts are pushed into the sleeve from opposite ends and abut in the middle.
- the cable With the inserts in place, the cable is fully located in the centre of the sleeve.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0426149.1A GB0426149D0 (en) | 2004-11-29 | 2004-11-29 | Fall arrest |
PCT/GB2005/004532 WO2006056790A1 (en) | 2004-11-29 | 2005-11-28 | Intermediate bracket for fall arrest cables / safety lines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1838395A1 true EP1838395A1 (en) | 2007-10-03 |
EP1838395B1 EP1838395B1 (en) | 2009-10-14 |
Family
ID=33561501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05814098A Not-in-force EP1838395B1 (en) | 2004-11-29 | 2005-11-28 | Intermediate bracket for fall arrest cables/safety lines |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1838395B1 (en) |
AT (1) | ATE445442T1 (en) |
CA (1) | CA2589507A1 (en) |
DE (1) | DE602005017192D1 (en) |
GB (1) | GB0426149D0 (en) |
WO (1) | WO2006056790A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7883732B2 (en) | 2003-06-12 | 2011-02-08 | Cargill, Incorporated | Antimicrobial salt solutions for cheese processing applications |
US8486472B2 (en) | 2006-01-18 | 2013-07-16 | Cargill, Incorporated | Antimicrobial salt solutions for food safety applications |
GB0616261D0 (en) * | 2006-08-16 | 2006-09-27 | Uniline Safety Systems Ltd | Intermediate support for an elongate safety member |
CN102636340B (en) * | 2012-03-16 | 2014-04-09 | 山东省纺织科学研究院 | Fatigability check meter for movement repeating mechanism of speed difference self-controller |
US9132297B2 (en) | 2012-07-18 | 2015-09-15 | D B Industries, Llc | Rope grab |
US9168402B2 (en) | 2012-07-18 | 2015-10-27 | D B Industries, Llc | Rope grab |
CN103566502B (en) * | 2013-10-09 | 2015-12-09 | 国家电网公司 | Line maintenance steps on the overall process fall arrest personal security apparatus of bar |
NL2016476B1 (en) * | 2016-03-22 | 2017-10-05 | Xsplatforms B V | Cable guide. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2804708B1 (en) * | 2000-02-03 | 2002-03-15 | Dalloz Fall Prot | DEVICE FOR FIXING A LIFELINE AGAINST A WALL |
AU2002350892A1 (en) * | 2001-11-27 | 2003-06-10 | Latchways Plc | Safety line support |
-
2004
- 2004-11-29 GB GBGB0426149.1A patent/GB0426149D0/en not_active Ceased
-
2005
- 2005-11-28 EP EP05814098A patent/EP1838395B1/en not_active Not-in-force
- 2005-11-28 AT AT05814098T patent/ATE445442T1/en not_active IP Right Cessation
- 2005-11-28 CA CA002589507A patent/CA2589507A1/en not_active Abandoned
- 2005-11-28 WO PCT/GB2005/004532 patent/WO2006056790A1/en active Application Filing
- 2005-11-28 DE DE602005017192T patent/DE602005017192D1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006056790A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1838395B1 (en) | 2009-10-14 |
DE602005017192D1 (en) | 2009-11-26 |
GB0426149D0 (en) | 2004-12-29 |
ATE445442T1 (en) | 2009-10-15 |
CA2589507A1 (en) | 2006-06-01 |
WO2006056790A1 (en) | 2006-06-01 |
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