NO793732L - PROCEDURE FOR FOLDING PLASTIC BELGES. - Google Patents
PROCEDURE FOR FOLDING PLASTIC BELGES.Info
- Publication number
- NO793732L NO793732L NO793732A NO793732A NO793732L NO 793732 L NO793732 L NO 793732L NO 793732 A NO793732 A NO 793732A NO 793732 A NO793732 A NO 793732A NO 793732 L NO793732 L NO 793732L
- Authority
- NO
- Norway
- Prior art keywords
- bellows
- section
- cross
- folded
- folding
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 230000004323 axial length Effects 0.000 claims description 3
- 238000004904 shortening Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- HZFDKBPTVOENNB-GAFUQQFSSA-N N-[(2S)-1-[2-[(2R)-2-chloro-2-fluoroacetyl]-2-[[(3S)-2-oxopyrrolidin-3-yl]methyl]hydrazinyl]-3-(1-methylcyclopropyl)-1-oxopropan-2-yl]-5-(difluoromethyl)-1,2-oxazole-3-carboxamide Chemical compound CC1(C[C@@H](C(NN(C[C@H](CCN2)C2=O)C([C@H](F)Cl)=O)=O)NC(C2=NOC(C(F)F)=C2)=O)CC1 HZFDKBPTVOENNB-GAFUQQFSSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/22—Corrugating
- B29C53/30—Corrugating of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
- B31F1/0006—Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof
- B31F1/0032—Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof of tubes
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
- F16L11/111—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall with homogeneous wall
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Duct Arrangements (AREA)
- Cartons (AREA)
- Materials For Medical Uses (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
Oppfinnelsen angår en fremgangsmåte ved brettingThe invention relates to a method for folding
au plastbelgrør med et minstetverrsnitt for gjennomblåsning, utformet som lagringsbelger (Sp eicherlutten) og' som kan transporteres i rombesparende enheter. au plastic bellows with a minimum cross-section for blowing through, designed as storage bellows (Sp eicherlutten) and' which can be transported in space-saving units.
Vanligvis blir de til gruve- og bergverksdrift under jorden, eksempelvis ved stenkullutvinning, for fremstilling av en luftekanal nødvendige belger, fremstilt i lengder på 10 meter og levert under jorden. Belgene brettes sammen til flate pakker og leveres på stedet og blir syklisk innbygget i luftekanalen, avhengig av fremdriften. Usually, they are needed for mining and quarrying operations underground, for example in the case of hard coal extraction, for the production of an air duct necessary bellows, produced in lengths of 10 meters and delivered underground. The bellows are folded into flat packages and delivered on site and are cyclically built into the air duct, depending on progress.
Myndighetene foreskriver den konstante avstand mellom utblåsningavstandene til fri luft for luftekanalen. The authorities prescribe the constant distance between the blow-out distances to free air for the air duct.
F.or å kunne tilpasse denne forskriftsmessige avstand med fremdriften, innsettes belglagre. Belglagrene danner en omfattende konstruksjon, er kostbare i anskaffelse og er der-ti 1 uhåndterlig ved gjentatt benyttelse. In order to be able to adapt this regulatory distance to the progress, bellows bearings are inserted. The bellows form an extensive construction, are expensive to acquire and are therefore unmanageable when used repeatedly.
Oppfinnelsen står overfor den oppgave å fremskaffe en fremgangsmåte ved b.retting av plastbelger med et minstetverrsnitt for gjennomblåsning, hvorved både den gjentatte innsetting av belger fremstilt i normlengder, og også innsetting av belglagre av vanlig og som ovenfor beskreven type, bortfaller. Oppfinnelsen danner dermed en enkel og økonomisk løsning og letter i tillegg den gjentatte transport og sikrer en nedsettelse av belgenes slitasje på stedet. The invention is faced with the task of providing a method for straightening plastic bellows with a minimum cross-section for blowing through, whereby both the repeated insertion of bellows produced in standard lengths, and also the insertion of bellows bearings of the usual and above-described type, is eliminated. The invention thus forms a simple and economical solution and also facilitates the repeated transport and ensures a reduction in the wear of the bellows on site.
Denne oppgave løses ifølge oppfinnelsen ved at en belgs opprinnelig sirkelformede tverrsnitt i radial retning ved forkortelse av den aksiale lengde brettes sammen til polygoner, idet polygonene er forsatt mot hverandre i enkelte According to the invention, this task is solved by folding the originally circular cross-section of a bellows in the radial direction into polygons by shortening the axial length, the polygons being offset from each other in certain
bretteplan med en på forhånd gitt vinkel.folding plane with a pre-given angle.
Innenfor rammen av oppfinnelsen viser det seg for-delaktig at en belgs sirkelformede tverrsnitt legges i brettetverrsnitt med eksempelvis triangulær, rektangulær eller mangekantet form. Within the framework of the invention, it proves advantageous that a bellows' circular cross-section is placed in a folded cross-section with, for example, a triangular, rectangular or polygonal shape.
De. ulike b ret tet verr sni tt gir på den ene side en ulik brettehøyde og på den andre side ulike åpningstverrsnitt. The. different folds and cross-sections give, on the one hand, different fold heights and, on the other hand, different opening cross-sections.
Oppfinnelsens tekniske fremskritt kan sees ved atThe technical progress of the invention can be seen in that
en kan gå bort fra de hittil små normlengder, eksempelvisone can move away from the hitherto small standard lengths, for example
på 10 meter, hvorved den stadige forlengelse av luftekanalen forenkles og slitasjen forminskes. I tillegg bortfaller de of 10 metres, whereby the constant extension of the air duct is simplified and wear is reduced. In addition, they expire
kostnadskrevende vedlikeholdsarbeider og reparasjoner som costly maintenance work and repairs such as
•fremkommer ved det store antall kanalforbindelser. Tegningene inneholder flere utførelser ifølge oppfinnelsen og forklares i det følgende, idet fig. 1 viser en brettet belg, dels i snitt,og fig. 2 - r 5 viser utførelser med forskjellige •appears due to the large number of channel connections. The drawings contain several embodiments according to the invention and are explained in the following, as fig. 1 shows a folded bellows, partly in section, and fig. 2 - r 5 show designs with different
brettetverrsnitt.board cross-section.
Fremgangsmåten ved bretting av plastbelger ifølge oppfinnelsen tydeliggjøres ved hjelp av figurene 1 - 5. The procedure for folding plastic bellows according to the invention is made clear with the help of figures 1 - 5.
Den delvis viste belg 6 på fig. 1 brettes, orn mulig maskinelt, i radial retning slik at det opprinnelig sirkelformede tverrsnitt 1 ved forkortelse av den aksiale lengde, får et mindre åpningstverrsnitt. The partially shown bellows 6 in fig. 1 is folded, as far as possible by machine, in the radial direction so that the originally circular cross-section 1, by shortening the axial length, gets a smaller opening cross-section.
Med utgangspunkt i den på fig. 1 viste bretting med et åpningstverrsnitt 7 i bretteplanet, fremviser denne en triangelform 2. Det etterfølgende bretteplan er forsatt med-sols med en vinkel på 60°. På denne måte fremviser det frie åpningstverrsnitt 7 en sekskantet form. Det frie åpningstverrsnitt 7 er i forhold til belgens 6 opprinnelig sirkelformede tverrsnitt, lite. Dette brettetverrsnitt på fig. 1 er gjengitt i snitt på fig. 2. Based on the one in fig. 1 showed folding with an opening cross-section 7 in the folding plane, this presents a triangular shape 2. The subsequent folding plane is continued clockwise with an angle of 60°. In this way, the free opening cross-section 7 presents a hexagonal shape. The free opening cross-section 7 is small compared to the originally circular cross-section of the bellows 6. This fold cross-section in fig. 1 is shown in section in fig. 2.
Fig. 3 - 5 gjengir andre utførelser av brettetverr-snittene. Det i et plan gitte brettetverrsnitt, eksempelvis i form av et polygon,3, gir et polygon 4 som fritt åpningstverrsnitt 7, idet polyyonets 4 hjørnetall er avhengig av den på forhånd gitte vinkel hvorved bretteplanene er forsatt i forhold til hverandre. l/ed brettingen forkortes belgen 6 Fig. 3 - 5 reproduce other designs of the board cross-sections. The fold cross-section given in a plane, for example in the form of a polygon, 3, gives a polygon 4 as a free opening cross-section 7, the number of corners of the polygon 4 being dependent on the pre-given angle by which the fold planes are offset in relation to each other. l/ed the folding shortens the bellows 6
i aksial retning og åpningstverrsnittet 7 etter brettingen sikrer en sådan belgs 6 funksjonsevne. Koples en på denne måte sammenbrettet belg 6 til den uttaksende av en belg-kanal som skal forlenges, så kan den strekke seg ut kontinuer-lig og følge fremdriften og atter innta det opprinnelig runde tverrsnitt 1 og alltid tillate utblåsning i en optimal avstand fra stollens ende. in the axial direction and the opening cross-section 7 after folding ensures the functionality of such a bellows 6. If a bellows 6 folded in this way is connected to the protruding end of a bellows channel that is to be extended, it can extend continuously and follow the progress and again take the original round cross-section 1 and always allow blowing out at an optimal distance from the stollen end.
Det er niulig å samrnenbrette belglengde.r på eksempelvis -100 meter til en pakke og bygge dette sammen i ett stykke. Forholdet mellom lengden på en uttrukket belglengde og høyden på en sammenbrettet belgpakke, utgjør, avhengig av brette-tverrsnittet, omtrent 100:1. It is not necessary to fold together bellows lengths of, for example -100 meters into a package and build this together in one piece. The ratio between the length of an extended bellows length and the height of a folded bellows package is, depending on the folded cross-section, approximately 100:1.
Ifølge en ytterligere utførelse som ikke er v/istAccording to a further embodiment which is not shown
på tegningene, er det mulig å fremstille en på denne måte in the drawings, it is possible to produce one in this way
brettet belg.au bøyelige plater. Platene kappes opp i tre-kanter ifølge den gitte fremgangsmåte og forbindes fleksibelt med'.hverandre. Bruken av en sådan belg egner seg særlig ved konvensjonell sprengningsf rerndrif t hvor luftekanalen forkortes før sprengningen for derved å bringes ut av faresonen, men imidlertid uten å avbryte friskluftti1 førselen. folded bellows.au bendable sheets. The boards are cut into three sides according to the given method and connected flexibly to each other. The use of such a bellows is particularly suitable for conventional blasting operations where the air duct is shortened before blasting in order to thereby be brought out of the danger zone, but without interrupting the supply of fresh air.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2850267A DE2850267C2 (en) | 1978-11-20 | 1978-11-20 | Method of folding plastic tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO793732L true NO793732L (en) | 1980-05-21 |
Family
ID=6055134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO793732A NO793732L (en) | 1978-11-20 | 1979-11-19 | PROCEDURE FOR FOLDING PLASTIC BELGES. |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2850267C2 (en) |
| FR (1) | FR2441476A1 (en) |
| GB (1) | GB2035505B (en) |
| NO (1) | NO793732L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1264044B (en) * | 1993-02-04 | 1996-09-09 | CONVEYOR SLEEVE. |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB672960A (en) * | 1948-11-04 | 1952-05-28 | Gen Motors Corp | Improved machine for folding sheet material into bellows |
| GB680263A (en) * | 1949-09-12 | 1952-10-01 | Gen Motors Corp | Improved machine for folding sheet material into bellows |
| DE842588C (en) * | 1950-01-24 | 1952-06-30 | Gen Motors Corp | Method and machine for folding bellows |
| DE965485C (en) * | 1951-05-26 | 1957-06-13 | Hans Georg Schauenburg | Harmonica-like foldable weather flute |
| US3339004A (en) * | 1966-03-16 | 1967-08-29 | Sweetheart Plastics | Forming of flexible drinking straws |
-
1978
- 1978-11-20 DE DE2850267A patent/DE2850267C2/en not_active Expired
-
1979
- 1979-08-22 GB GB7929303A patent/GB2035505B/en not_active Expired
- 1979-10-17 FR FR7925813A patent/FR2441476A1/en active Granted
- 1979-11-19 NO NO793732A patent/NO793732L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2441476B1 (en) | 1984-04-06 |
| GB2035505B (en) | 1982-11-17 |
| GB2035505A (en) | 1980-06-18 |
| FR2441476A1 (en) | 1980-06-13 |
| DE2850267A1 (en) | 1980-06-04 |
| DE2850267C2 (en) | 1983-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS4865076A (en) | ||
| NO793732L (en) | PROCEDURE FOR FOLDING PLASTIC BELGES. | |
| AU2009212092B2 (en) | A method and an apparatus for mining a material in an underground environment | |
| DE1211474B (en) | Device for erecting the bottom parts on folding box blanks | |
| CN205972169U (en) | Carton with dampproofing bottom plate | |
| CN205949720U (en) | Two pay -off structures | |
| CN206915460U (en) | A kind of High-precision paperboard stack height detection means | |
| US4483238A (en) | Dust control in longwall mining | |
| EP0288686B1 (en) | Coder for gases produced by gasification | |
| FI62235C (en) | INMATNINGSANORDNING FOER STRAOLKVARN | |
| CN215401961U (en) | Medicine box paging machine | |
| US5706931A (en) | Device for transferring products | |
| CN107512567A (en) | The belt conveyer and installation method of a kind of coal cutting roadway | |
| CN207391966U (en) | A kind of track adapter for adjustable height on banding concrete construction side form | |
| DE576014C (en) | Blowing device with feed funnel and subsequent nozzle pipe | |
| US1597023A (en) | Art of mining coal | |
| SU1151672A1 (en) | Method of mining gently-sloping seams | |
| US1659153A (en) | Spiral separator | |
| DE102021129323A1 (en) | Conveying device for a plant for the production of cement | |
| Barker | The Story of Crown Point Iron | |
| SU1247540A1 (en) | Method of mining mineral deposits | |
| SU1689623A1 (en) | Method for working steep ore deposits of moderate thickness | |
| DE3229995C1 (en) | Plant for the expansion of perlite and similar expandable material | |
| DE3710854A1 (en) | BUNKER FURNITURE FOR OPEN CITIES | |
| SU1738126A1 (en) | Method and device for cleaning and grading potato tubers |