EP0286711A1 - Rundschlinge zum Heben von Lasten - Google Patents

Rundschlinge zum Heben von Lasten Download PDF

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Publication number
EP0286711A1
EP0286711A1 EP87106085A EP87106085A EP0286711A1 EP 0286711 A1 EP0286711 A1 EP 0286711A1 EP 87106085 A EP87106085 A EP 87106085A EP 87106085 A EP87106085 A EP 87106085A EP 0286711 A1 EP0286711 A1 EP 0286711A1
Authority
EP
European Patent Office
Prior art keywords
round sling
test
endless strand
sling according
conductor
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.)
Withdrawn
Application number
EP87106085A
Other languages
German (de)
English (en)
French (fr)
Inventor
Heinz Franke
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.)
Spanset Inter AG
Original Assignee
Spanset Inter AG
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 Spanset Inter AG filed Critical Spanset Inter AG
Publication of EP0286711A1 publication Critical patent/EP0286711A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/18—Band-type slings
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status

Definitions

  • the invention relates to a round sling for lifting loads with the features listed in the preamble of claim 1.
  • the construction of such round slings also known as woven lifting slings, is the subject of DIN 61 360.
  • the thread of the endless strand consists of a synthetic, multifilament material.
  • Such round slings have to be checked for integrity at certain intervals. This check is inevitably largely limited to checking the integrity of the protective hose, because the scrim or the endless strand cannot be checked visually due to the covering by the protective tube made of non-transparent textile material, although the endless strand alone forms the load-bearing core of the round sling.
  • the invention has for its object to provide a round sling of the type mentioned, which allows a check of the integrity of its endless strand without special expertise. This object is solved by the characterizing part of claim 1.
  • the invention is based on the finding that the load-bearing capacity of a round sling is impaired when one of the many turns of the scrim or the supporting endless strand is damaged or is particularly severed. Such damage or severing of the endless strand has an externally measurable influence on the passage of the test medium applied to the ends of the test conductor.
  • the material properties of the test conductor should be such that, in the event of an overload in the longitudinal direction, only the endless strand and then the test conductor breaks.
  • the test conductor can be connected to the protective tube at both ends in a particularly simple manner.
  • the identification feature of claim 4 ensures that the continuous strand can be checked over its entire length for its integrity by the test manager. This can be ensured in a simple manner in that the test conductor is spun together with the thread of the endless strand.
  • the test conductor can be embedded all around in the thread of the endless strand, which advantageously ensures that it does not come into direct contact with the test conductor of an adjacent turn of the endless strand.
  • the higher elasticity of the test conductor in relation to the elasticity of the thread of the endless strand can be e.g. thereby achieve that the endless conductor runs in an undulating or helical shape in the longitudinal direction of the thread of the endless strand.
  • the test conductor can be an electrical conductor for a continuity test. For this purpose, it can advantageously be encased in insulation. However, it is equally possible for the test conductor to be a light guide for a light continuity test.
  • the load-bearing core of the round sling consists of an endless strand 1 made of synthetic, multifilament thread material, for example of a polyamide and / or polyester fiber thread.
  • the number of individual turns 11 of adjacent strand sections determines the load capacity of the round sling to be taken up by the laid scrim.
  • the scrim or the endless strand 1 is encased by a protective tube 2 loosely surrounding it.
  • the protective hose 2 consists of a textile hose fabric or a sewn textile fabric. The protective hose is only filled to about 60% to 70% of its maximum hose cross-sectional area by the scrim or the endless strand 1.
  • the protective tube 2 is also slightly in the circumferential direction 3 of the round sling in folds, so that an expansion occurring in the event of a load and thus an increase in the circumferential length of the scrim or the endless strand 1 are still not to act on a tensile load on the protective tube and thus to damage it leads.
  • the slack with which the scrim or the endless strand 1 lies in the protective tube 2 ensures that the protective tube 2 is opposite the scrim or endless strand 1 and the individual thread strands or windings 11 can easily shift against each other for automatic load balancing.
  • the endless strand 1 has in its center a carried test conductor 4, the two ends 41, 42 of which are connected to two connecting ends or connecting contacts 5, 6 for the test medium, the connecting contacts 5, 6 passing through the wall of the protective tube 2, so that they are accessible from the outside. If the round sling has a plurality of endless strands 1 as a scrim, each test strand 4 is assigned to each endless strand 1 with two connecting ends or contacts 5, 6 respectively led out of the protective tube 2.
  • the test conductor 4 expediently has the same length as the continuous strand 1 assigned to it, so that it is carried over its entire length.
  • the test conductor 4 can be an electrical conductor for a continuity test.
  • the electrical conductor is expediently sheathed with an insulation 12 in order to avoid mutual contacting of the test conductors by threads or turns 11 of the endless strand 1 lying adjacent to one another.
  • the test conductor 4 can also be a light guide for a light continuity test.
  • test manager 4 As long as the test manager 4 is undamaged, it can easily be determined even by an inexperienced user by means of a simple continuity tester whether the test manager is still intact or severed. If no turn 11 of the endless strand 1 is cut, the through shows gait tester continuity on. However, if there is a cut, this is indicated by the continuity tester. For example, a current does not flow with an electrical test conductor. If the test conductor is a light guide, even a partial separation of the same can be determined optically in a simple manner. In any case, the design of the round sling according to the invention enables simple checking whether the load-bearing core of the round sling is still intact.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Control And Safety Of Cranes (AREA)
  • Emergency Lowering Means (AREA)
  • Ropes Or Cables (AREA)
  • Treatment Of Fiber Materials (AREA)
EP87106085A 1986-05-15 1987-04-27 Rundschlinge zum Heben von Lasten Withdrawn EP0286711A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3616465 1986-05-15
DE3616465A DE3616465C1 (de) 1986-05-15 1986-05-15 Rundschlinge zum Heben von Lasten

Publications (1)

Publication Number Publication Date
EP0286711A1 true EP0286711A1 (de) 1988-10-19

Family

ID=6300944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106085A Withdrawn EP0286711A1 (de) 1986-05-15 1987-04-27 Rundschlinge zum Heben von Lasten

Country Status (15)

Country Link
US (1) US4757719A (it)
EP (1) EP0286711A1 (it)
JP (2) JPS6312586A (it)
KR (1) KR870011034A (it)
CN (1) CN87103447A (it)
AU (1) AU586102B2 (it)
BR (1) BR8702503A (it)
DE (2) DE3616465C1 (it)
DK (1) DK246287A (it)
ES (1) ES1016421Y (it)
FI (1) FI872158A (it)
IT (1) IT222157Z2 (it)
NO (1) NO871921L (it)
NZ (1) NZ220301A (it)
ZA (1) ZA873492B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2676814A1 (fr) * 1991-05-24 1992-11-27 Elf Aquitaine Systeme de surveillance et de controle des cables par fibre optique.
CN104428462A (zh) * 2012-10-29 2015-03-18 小浜制绳株式会社 合成纤维绳

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703547A1 (de) * 1987-02-06 1988-08-18 Spanset Inter Ag Verfahren zum herstellen einer rundschlinge
FR2651762B1 (fr) * 1989-09-11 1992-01-03 R P Dev Sarl Elingue a haute resistance et son procede de fabrication.
US5727833A (en) * 1996-06-10 1998-03-17 American Steel Investment Corporation Eye-and-eye sling
ATE500185T1 (de) * 2001-12-03 2011-03-15 Mamutec Ag Hebegurtschlinge
US7134267B1 (en) 2003-12-16 2006-11-14 Samson Rope Technologies Wrapped yarns for use in ropes having predetermined surface characteristics
US7475926B2 (en) * 2004-06-19 2009-01-13 First Sling Technology Llc Synthetic roundsling with inspectable core
WO2006049226A1 (en) * 2004-11-02 2006-05-11 Toray International, Inc. Fiber sling and method for evaluating its performance
US7661737B2 (en) * 2005-05-23 2010-02-16 Slingmax, Inc. Sling with predictable pre-failure warning indicator
US8341930B1 (en) 2005-09-15 2013-01-01 Samson Rope Technologies Rope structure with improved bending fatigue and abrasion resistance characteristics
US8256810B2 (en) 2006-03-03 2012-09-04 Mueller Dewayne Lifting sling with excessive elongation warning indictor
US7422256B2 (en) * 2006-03-03 2008-09-09 Mueller Dewayne Lifting sling with excessive elongation warning indicator
US7938468B2 (en) 2006-03-03 2011-05-10 Mueller Dewayne Lifting sling with excessive elongation warning indicator
US8109072B2 (en) 2008-06-04 2012-02-07 Samson Rope Technologies Synthetic rope formed of blend fibers
KR100927857B1 (ko) * 2009-01-20 2009-11-19 배성남 라운드슬링
US9003757B2 (en) 2012-09-12 2015-04-14 Samson Rope Technologies Rope systems and methods for use as a round sling
US8689534B1 (en) 2013-03-06 2014-04-08 Samson Rope Technologies Segmented synthetic rope structures, systems, and methods
ES2525948B1 (es) * 2013-06-26 2015-09-09 Industrias Ponsa, S.A. Procedimiento para la fabricación de una eslinga textil redonda y una eslinga así obtenida
WO2015105509A1 (en) * 2014-01-13 2015-07-16 Slingmax, Inc. Roundslings with radio frequency identification pre-failure warning indicators
CN103922218B (zh) * 2014-05-06 2015-10-28 哈尔滨建成集团有限公司 一种吊装锥形体仪器舱的吊具
NL2012849B1 (en) * 2014-05-20 2016-03-07 Cabin Air Group Bv Cable, and method for monitoring a cable.
EP3114273B1 (en) 2014-05-20 2017-08-30 Cabin Air Group B.V. Cable, and method for monitoring a cable
DE102015106515B3 (de) * 2015-04-28 2016-10-20 Mizu Vertriebs-Gmbh Aufrollhilfe
US9573661B1 (en) 2015-07-16 2017-02-21 Samson Rope Technologies Systems and methods for controlling recoil of rope under failure conditions
US9589444B1 (en) * 2015-10-14 2017-03-07 Slingmax Technologies LLC Electronic roundsling inspection, load monitoring and warning system
US10377607B2 (en) * 2016-04-30 2019-08-13 Samson Rope Technologies Rope systems and methods for use as a round sling
USD908362S1 (en) * 2019-04-02 2021-01-26 Lift-All Company, Inc. Sling
US11577894B2 (en) * 2020-11-24 2023-02-14 Idea Makers, LLC Self-binding equipment ties

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB454641A (en) * 1934-12-27 1935-06-28 Stephen Percival Foreacre Snee Improvements in or relating to cordage
US3104515A (en) * 1962-04-09 1963-09-24 United States Steel Corp Wire rope
FR2099108A5 (it) * 1970-06-17 1972-03-10 Spanset Inter Ag
FR2205468A1 (it) * 1972-11-08 1974-05-31 Skepps & Fiskeritillbehoer
FR2410077A1 (fr) * 1977-11-28 1979-06-22 Seine & Lys Cables, cordages et sangles de securite, notamment en matieres textiles synthetiques
GB2053303A (en) * 1979-07-20 1981-02-04 Platts M J Elastic Tie Member
GB2130611A (en) * 1982-11-22 1984-06-06 Dr A T Ratcliffe Synthetic fibre rope: monitoring strain using optical fires
GB2152088A (en) * 1983-12-20 1985-07-31 Bridon Plc Detection of deterioration in rope

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080748A (en) * 1959-11-27 1963-03-12 Goodyear Aircraft Corp Strain detection apparatus
US3958455A (en) * 1973-09-21 1976-05-25 Russell John D Force transducer for strain gage
GB1570511A (en) * 1976-08-20 1980-07-02 Standard Telephones Cables Ltd Strain threshold alarm device
GR73539B (it) * 1980-01-21 1984-03-12 Spanset Inter Ag

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB454641A (en) * 1934-12-27 1935-06-28 Stephen Percival Foreacre Snee Improvements in or relating to cordage
US3104515A (en) * 1962-04-09 1963-09-24 United States Steel Corp Wire rope
FR2099108A5 (it) * 1970-06-17 1972-03-10 Spanset Inter Ag
FR2205468A1 (it) * 1972-11-08 1974-05-31 Skepps & Fiskeritillbehoer
FR2410077A1 (fr) * 1977-11-28 1979-06-22 Seine & Lys Cables, cordages et sangles de securite, notamment en matieres textiles synthetiques
GB2053303A (en) * 1979-07-20 1981-02-04 Platts M J Elastic Tie Member
GB2130611A (en) * 1982-11-22 1984-06-06 Dr A T Ratcliffe Synthetic fibre rope: monitoring strain using optical fires
GB2152088A (en) * 1983-12-20 1985-07-31 Bridon Plc Detection of deterioration in rope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2676814A1 (fr) * 1991-05-24 1992-11-27 Elf Aquitaine Systeme de surveillance et de controle des cables par fibre optique.
CN104428462A (zh) * 2012-10-29 2015-03-18 小浜制绳株式会社 合成纤维绳
US10100462B2 (en) 2012-10-29 2018-10-16 Obama Rope Mfg., Co., Ltd. Synthetic-fiber rope

Also Published As

Publication number Publication date
BR8702503A (pt) 1988-02-23
JPH02108989U (it) 1990-08-30
IT222157Z2 (it) 1995-01-24
NZ220301A (en) 1988-11-29
FI872158A0 (fi) 1987-05-15
ES1016421U (es) 1991-11-16
DE3616465C1 (de) 1987-05-14
CN87103447A (zh) 1988-01-20
FI872158A (fi) 1987-11-16
ES1016421Y (es) 1992-05-01
ZA873492B (en) 1987-11-12
NO871921D0 (no) 1987-05-11
ITMI910906U1 (it) 1993-04-17
KR870011034A (ko) 1987-12-19
JPS6312586A (ja) 1988-01-19
US4757719A (en) 1988-07-19
DK246287D0 (da) 1987-05-14
AU586102B2 (en) 1989-06-29
DE8706451U1 (de) 1987-07-30
NO871921L (no) 1987-11-16
AU7310187A (en) 1987-11-19
DK246287A (da) 1987-11-16

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