NO141934B - Pull or lift chain. - Google Patents
Pull or lift chain. Download PDFInfo
- Publication number
- NO141934B NO141934B NO404771A NO404771A NO141934B NO 141934 B NO141934 B NO 141934B NO 404771 A NO404771 A NO 404771A NO 404771 A NO404771 A NO 404771A NO 141934 B NO141934 B NO 141934B
- Authority
- NO
- Norway
- Prior art keywords
- chain
- control element
- overload control
- link
- chain according
- Prior art date
Links
- 210000000078 claw Anatomy 0.000 claims description 2
- 238000004904 shortening Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/06—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using mechanical means
-
- 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
- B66C1/125—Chain-type slings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Passenger Equipment (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Lubricants (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Package Frames And Binding Bands (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Description
Oppfinnelsen vedrører en trekk- eller løftekjetting av den The invention relates to a pulling or lifting chain of it
type som er kjent fra GB-PS 8 97 161 og som er angitt i inn-ledningen av krav 1. type which is known from GB-PS 8 97 161 and which is stated in the introduction of claim 1.
Slike kjettinger benyttes spesielt for løfteinnretninger. Such chains are used especially for lifting devices.
Deres løftekraft utgjør jevnt over bare en brøkdel av brudd-belastningen. Brukeren av slike kjettinger må naturligvis være klar over kjettingens bærekraft for å velge ut en korrekt dimensjonert kjetting for den last som skal løftes. Denne ut-velgelse lettes ved at overbelastningselementet viser brukeren om-kjettingen overbelastes. Their lifting force is consistently only a fraction of the breaking load. The user of such chains must of course be aware of the chain's carrying capacity in order to select a correctly sized chain for the load to be lifted. This selection is facilitated by the overload element showing the user whether the chain is overloaded.
Ved den kjente trekk- eller løftekjetting er overbelastningselementet fastsveiset i kjettinglenken. Dette betyr at i tilfelle av en engangs overbelastning av overbelastningskontrollelementet, blir hele kjettinglenken ubrukelig og må er-stattes med en ny kjettinglenke på bruksstedet. En ytterligere ulempe ved den kjente konstruksjon består i at det ikke er mulig å gjennomføre en avveiet varmebehandling av kjeden efter sammensveisingen av leddene. Med en avveiet varmebehandling menes en varmebehandling som tar hensyn til kjetting-leddenes og overbelastningskontrollelementets ulike material-kvaliteter. Ved den kjente kjetting kan enten kun de normale ledd eller overbelastningskontrollelementet varmebehandles op-timalt. Dette betyr at produksjonen av kjettinger av den kjente art er meget problematisk. With the known pulling or lifting chain, the overload element is welded to the chain link. This means that in the event of a single overload of the overload control element, the entire chain link becomes unusable and must be replaced with a new chain link at the point of use. A further disadvantage of the known construction is that it is not possible to carry out a balanced heat treatment of the chain after the joints have been welded together. A balanced heat treatment means a heat treatment that takes into account the different material qualities of the chain links and the overload control element. With the known chain, either only the normal links or the overload control element can be optimally heat treated. This means that the production of chains of the known kind is very problematic.
Til grunn for oppfinnelsen ligger den oppgave å forbedre den trekk- eller løftekjetting av den i innledning til krav 1 an-gitte art for så vidt at overbelastningskontrollelelementet kan varmebehandles uavhengig av de resterende deler av kjettingen og lett og enkelt kan byttes ut av kjettingens bruker efter overbelastning. The invention is based on the task of improving the pulling or lifting chain of the type specified in the introduction to claim 1 to the extent that the overload control element can be heat treated independently of the remaining parts of the chain and can be easily and simply replaced by the user of the chain overload.
For å løse denne oppgave er det ifølge oppfinnelsen anordnet utformningstrekk som angitt i karakteristikken av krav 1, og i underkravene 2 - 6 er det angitt ytterligere utformninger som er fordelaktige og tjenlige for løsning av oppgaven. In order to solve this task, according to the invention, design features are arranged as indicated in the characteristic of claim 1, and in sub-claims 2 - 6 further designs are indicated which are advantageous and useful for solving the task.
Oppfinnelsen skal i det følgende beskrives nærmere under hen-visning til flere utførelseseksempler som er vist på tegningen. In the following, the invention will be described in more detail with reference to several exemplary embodiments shown in the drawing.
Oppfinnelsen skal i det folgende beskrives nærmere under hen-visning til flere utforelseseksempler som er vist i tegningen. Fig. 1 viser en perspektivskisse av en anslagskjetting med tre lenker som i endene er forsynt med tre forskjellige befestigel-ses- hhv. forkortningselementer for anskueliggjoring av forskjellige utformningsmuligheter. Fig. 2 viser et overbelastnings-kontrollelement anordnet mellom to forbindelsesorganer i form av kjettinglåser og gjengitt i utgangstilstand. Fig. 3 viser et overbelastnings-kontrollelement anordnet mellom to kjettinglåser og vist etter deformering til kjettinglenkens testbelastning. Fig. 4 viser et overbelastnings-kontrollelement anordnet mellom to kjettinglåser og vist etter belastning til minstebrudd-fasthet. Fig. 5 viser et overbelastnings-kontrollelement med midler for tydeliggjoring av den inntrådte deformering. Fig. 6 viser et overbelastnings-kontrollelement med steglignende ansatser og et innsatt kunststofflegeme. Fig. 7 viser et annet overbelastnings-kontrollelement med steglignende ansatser. Fig. 8 viser et overbelastnings-kontrollelement med et membranlignende kunststofflegeme som viser deformeringen. In the following, the invention will be described in more detail with reference to several exemplary embodiments shown in the drawing. Fig. 1 shows a perspective sketch of an impact chain with three links, which are provided at the ends with three different attachment systems, respectively. abbreviation elements for visualization of different design possibilities. Fig. 2 shows an overload control element arranged between two connecting means in the form of chain locks and shown in the initial state. Fig. 3 shows an overload control element arranged between two chain locks and shown after deformation to the chain link's test load. Fig. 4 shows an overload control element arranged between two chain locks and shown after loading to minimum breaking strength. Fig. 5 shows an overload control element with means for making clear the deformation that has occurred. Fig. 6 shows an overload control element with step-like projections and an inserted plastic body. Fig. 7 shows another overload control element with step-like projections. Fig. 8 shows an overload control element with a membrane-like plastic body which shows the deformation.
Fig. 9 er et snitt etter linjen IX-IX i fig. 8. Fig. 9 is a section along the line IX-IX in fig. 8.
I fig. 1 betegner 11 tre kjettinglenker som i sin nedre ende har hver sin kjettinglås 12 og i sin ovre ende har to kjettinglåser 13,14 hver som danner forbindelsesorganer. Mellom kjettinglåsene 13,14 er det anordnet overbelastnings-kontrollelementer 15,16 og 17. Kjettinglåsene 14 står via mellomledd 18, 19 i forbindelse med et opphengningsledd 2o. Etter kjettinglåsene 12 folger en gjennomforingsring 21, en osekrok 22 hhv. In fig. 1 designates 11 three chain links which at their lower end each have their own chain lock 12 and at their upper end have two chain locks 13,14 each which form connecting means. Overload control elements 15, 16 and 17 are arranged between the chain locks 13, 14. The chain locks 14 are connected via intermediate links 18, 19 to a suspension link 2o. After the chain locks 12 follows a through-ring 21, an eye hook 22 respectively.
en forkortelsesklo 24 som er festet til et kjettingparti 23. a shortening claw 24 which is attached to a chain part 23.
I praksis vil det mellom samtlige kjettinglåser 13,14 anbrin-ges like overbelastnings-kontrollelementer. I det viste utfo-relseseksempel er overbelastnings-kontrollelementet til enhver tid anordnet i serie med kjettinglenken 11. En parallell anord-ning av overbelastnings-kontrollelementet og forbindelsesorga-nene til et avlastet parti av kjettinglenken er også mulig. In practice, identical overload control elements will be placed between all chain locks 13,14. In the embodiment shown, the overload control element is at all times arranged in series with the chain link 11. A parallel arrangement of the overload control element and the connecting means to a relieved part of the chain link is also possible.
Dimensjonene av kjettinglenkenes 11 ledd, kjettinglåsene 13,14 og overbelastnings-kontrollelementet 15 fremgår av fig. 2, som gjengir de enkelte deler i ikke deformert tilstand. I fig. 2 er d diameteren av kjettinglenkens 11 rundledd. Den indre bredde av disse rundledd er 1,2 åv. Overbelastnings-kontrollelementet 15 som dannes av et sirkelringledd har en indre bredde på 3 d IV , hvor d is. er diameteren av det rundmateriale som er brukt for ringleddet og utgjor 1,4 dR. Fig. 3 viser overbelastnings-kontrollelementet etter at kjettingen er belastet til testlast, idet det ble brukt en ,testlast som svarer til 2,5 ganger bærelasten. Man ser tydelig den allerede inntrådte deformering som varsler brukeren om at kjettingen er blitt belastet over det tillatte. Fig. 4 viser formen på overbelastnings-kontrollelementet etter belastning til minste bruddlast, som i det viste tilfelle er lik den firedobbelte verdi av tillatt bærelast. Fig. 5 viser et overbelastnings-kontrollelement 25, hvor en hylse 26 og en stift 27 er festet på elementets grener. Hylsen og stiften kan ha forskjellige farger og på stiften 27 kan det være et faremerke 28. Overbelastning av kontrollelementet vars-les ved at stiftens faremerke trer inn i hylsen 26. The dimensions of the chain links 11 links, the chain locks 13,14 and the overload control element 15 are shown in fig. 2, which reproduces the individual parts in an undeformed state. In fig. 2, d is the diameter of the chain link's 11 round link. The inner width of these round joints is 1.2 mm. The overload control element 15 which is formed by a circular ring joint has an inner width of 3 d IV , where d is. is the diameter of the round material used for the ring joint and amounts to 1.4 dR. Fig. 3 shows the overload control element after the chain has been loaded to a test load, as a test load corresponding to 2.5 times the bearing load was used. You can clearly see the deformation that has already occurred, which alerts the user that the chain has been loaded beyond what is permitted. Fig. 4 shows the shape of the overload control element after loading to the minimum breaking load, which in the case shown is equal to four times the value of the permitted bearing load. Fig. 5 shows an overload control element 25, where a sleeve 26 and a pin 27 are attached to the element's branches. The sleeve and pin can have different colors and on the pin 27 there can be a danger mark 28. Overloading of the control element is signaled by the pin's danger mark entering the sleeve 26.
I hylsen 26 kan det også anordnes en tverrbolt 29 av kunst-stoff, som er utfort som nominelt bruddelement. Anslagsflater 3o og 31 begrenser den maksimale deformering av kontrollelementet i utforelseseksemplet ifolge fig. 5. In the sleeve 26, a transverse bolt 29 made of synthetic material can also be arranged, which is designed as a nominal breaking element. Stop surfaces 3o and 31 limit the maximum deformation of the control element in the embodiment example according to fig. 5.
Ved overbelastnings-kontrollelementet 32 ifolge fig. 6 forelig-ger det steglignende ansatser 33 og 34 på innsiden av sirkel-ringleddet. Mellom ansatsene 33,34 er det anordnet en kunst-stoff del 35. Ved deformering av kontrollelementet 32 vil fla-tene 36,37 skyve bort kunststoffdelen 35 og nærme seg hverandre til anlegg. Etter at denne stilling er oppnådd, har kontrollelementet storre formstivhet enn tidligere. In the case of the overload control element 32 according to fig. 6, there are step-like projections 33 and 34 on the inside of the circular ring joint. A plastic part 35 is arranged between the projections 33, 34. When the control element 32 is deformed, the surfaces 36, 37 will push away the plastic part 35 and approach each other to contact. After this position has been achieved, the control element has greater dimensional rigidity than before.
Overbelastnings-kontrollelementet 38 ifolge fig. 7 svarer i sin oppbygning prinsipielt til kontrollelementet ifolge fig. 6. I stedet for kunststoffdelen 35 brukes her imidlertid en stift 39 som etter deformering av kontrollelementet 38 trer ut av sin boring på den ene siden, som antydet ved 4o, og således danner et lett synlig fremspring. The overload control element 38 according to fig. 7 corresponds in principle to the control element according to fig. 6. Instead of the plastic part 35, however, a pin 39 is used here which, after deformation of the control element 38, emerges from its bore on one side, as indicated at 4o, and thus forms an easily visible projection.
Ved utforelseseksemplene ifolge fig. 8 og 9 er det brukt et membranlignende kunststofflegeme 41 som deformerings-varselor-gan. Ved deformering av kontrollelementet 42 brekker legemet 41 på det sted som er svekket ved spor 43. Ved fremstilling av overbelastnings-kontrollelementet må det omhyggelig sorges for noyaktig definisjon av begynnelsen på den plastiske deformering av kontrollelementet. Kalforming for og etter varmebehandling har vist seg fordelaktig. In the embodiment examples according to fig. 8 and 9, a membrane-like plastic body 41 is used as a deformation warning device. When the control element 42 is deformed, the body 41 breaks at the place weakened by the groove 43. When manufacturing the overload control element, care must be taken to accurately define the beginning of the plastic deformation of the control element. Cal forming before and after heat treatment has proven beneficial.
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702055253 DE2055253C3 (en) | 1970-11-03 | 1970-11-03 | Lashing or sling chain |
Publications (2)
Publication Number | Publication Date |
---|---|
NO141934B true NO141934B (en) | 1980-02-25 |
NO141934C NO141934C (en) | 1980-06-04 |
Family
ID=5787694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO404771A NO141934C (en) | 1970-11-03 | 1971-11-02 | Pull or lift chain. |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT316059B (en) |
BE (1) | BE774727A (en) |
CH (1) | CH555017A (en) |
DE (1) | DE2055253C3 (en) |
FR (1) | FR2113391A5 (en) |
GB (1) | GB1366108A (en) |
IT (1) | IT942771B (en) |
NO (1) | NO141934C (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2262975C3 (en) * | 1972-12-19 | 1981-12-03 | Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen | Control organ for overload control of chains |
DE2732246A1 (en) * | 1977-07-16 | 1979-02-01 | Thiele Fa August | HANGING HEAD FOR LOAD STRAND-ORIENTED SINGLE CHAIN SYSTEMS |
DE2811199A1 (en) * | 1978-03-15 | 1979-09-20 | Klippan Nv | DEVICE FOR THE LOAD INDICATOR OF A HOLDING DEVICE THAT CAN BE SUBMITTED UNDER TENSION |
DE2841686A1 (en) * | 1978-09-25 | 1980-04-03 | Thiele Fa August | ARRANGEMENT FOR OVERLOAD PROTECTION ON CHAINS, LIFTING BELTS AND THE LIKE |
DE2907692B1 (en) * | 1979-02-27 | 1980-06-26 | Rud Ketten Rieger & Dietz | Arrangement for overload control of lashing and sling chains |
FR2496264A2 (en) * | 1980-01-04 | 1982-06-18 | Stas Soc Tech Access Spec | Fatigue indicator for repeatedly stressed member - has circular central shearing sliver between to rigid members propagating cracks from ends of slit |
JPS56142439A (en) * | 1980-01-03 | 1981-11-06 | Esu Tee Aa Esu Soc Tech Dasets | Fatigue stress indicator |
FR2473178A1 (en) * | 1980-01-03 | 1981-07-10 | Stas Soc Tech Access Spec | Fatigue indicator for repeatedly stressed member - has circular central shearing sliver between to rigid members propagating cracks from ends of slit |
US4578941A (en) * | 1984-08-27 | 1986-04-01 | Emerson Electric Co. | Load carrying device |
DE19530687C2 (en) * | 1995-08-08 | 1999-03-04 | Rud Ketten Rieger & Dietz | Overload control device |
DE19914017C2 (en) * | 1999-03-19 | 2001-07-26 | Rud Ketten Rieger & Dietz | Chain made of round steel links |
NL2000139C2 (en) * | 2006-07-11 | 2008-01-14 | Partners Voor Strategie & Man | Hoisting device with overload detection. |
US7467510B2 (en) | 2006-11-15 | 2008-12-23 | Joy Mm Delaware, Inc. | Chain link anti-knuckle insert |
GB2452939B (en) * | 2007-09-19 | 2011-09-07 | Messier Dowty Ltd | Overload detection |
FI20125952A (en) * | 2012-09-14 | 2014-03-15 | Promeco Solutions Oy | Mechanical fuse and its use, as well as the method of receiving forces |
CN104386572A (en) * | 2014-11-17 | 2015-03-04 | 常熟市永固起重设备安装工程有限公司 | Multi-leg chain rigging set |
CN105858441A (en) * | 2016-05-13 | 2016-08-17 | 安徽九华机械股份有限公司 | Three-leg chain rigging |
US20180250197A1 (en) * | 2017-03-06 | 2018-09-06 | Your Solutions, Llc | Tethering device for a cup |
AU2018310750B2 (en) * | 2017-07-31 | 2023-10-26 | Mitchell Lee Lewis | Safety overload link |
DE102020005679A1 (en) * | 2020-09-16 | 2022-03-17 | Span Set Gesellschaft für Transportsysteme und technische Bänder mit beschränkter Haftung & Co. Kommanditgesellschaft | Tension indicator device |
-
1970
- 1970-11-03 DE DE19702055253 patent/DE2055253C3/en not_active Expired
-
1971
- 1971-10-29 FR FR7138946A patent/FR2113391A5/fr not_active Expired
- 1971-10-29 BE BE774727A patent/BE774727A/en unknown
- 1971-10-29 GB GB5044371A patent/GB1366108A/en not_active Expired
- 1971-11-01 CH CH1590771A patent/CH555017A/en not_active IP Right Cessation
- 1971-11-02 IT IT7059971A patent/IT942771B/en active
- 1971-11-02 AT AT942871A patent/AT316059B/en not_active IP Right Cessation
- 1971-11-02 NO NO404771A patent/NO141934C/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE774727A (en) | 1972-02-14 |
DE2055253C3 (en) | 1979-02-01 |
CH555017A (en) | 1974-10-15 |
AT316059B (en) | 1974-06-25 |
FR2113391A5 (en) | 1972-06-23 |
DE2055253B2 (en) | 1978-05-18 |
DE2055253A1 (en) | 1972-05-04 |
NO141934C (en) | 1980-06-04 |
GB1366108A (en) | 1974-09-11 |
IT942771B (en) | 1973-04-02 |
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