NO119135B - - Google Patents
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- Publication number
- NO119135B NO119135B NO16361766A NO16361766A NO119135B NO 119135 B NO119135 B NO 119135B NO 16361766 A NO16361766 A NO 16361766A NO 16361766 A NO16361766 A NO 16361766A NO 119135 B NO119135 B NO 119135B
- Authority
- NO
- Norway
- Prior art keywords
- respirator
- spring
- disc
- piston
- pump
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036391 respiratory frequency Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
- E02F3/345—Buckets emptying side-ways
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/401—Buckets or forks comprising, for example, shock absorbers, supports or load striking scrapers to prevent overload
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
- Chain Conveyers (AREA)
- External Artificial Organs (AREA)
- Earth Drilling (AREA)
- Load-Engaging Elements For Cranes (AREA)
Description
Respirator. Respirator.
Nærværende oppfinnelse vedrører en respiratoranordning av den type hvor trykkimpulsene tilveiebringes ved hjelp av en over en eksenteranordning drevet, luftpumpe. Slike respiratorpumper må i kraft av sin funksjonering ha et unødvendig stort volum for å oppnå den riktige trykk-kurve for tilveiebringelse av pasientens inn- og utåndingsfunksjoner. Slike respiratorpumper har tidligere vært drevet ved f. eks. en motor som over en krumtapp eller en eksenter har beveget stemplet frem og tilbake i regelmessig takt, dvs. at innåndingsslaget og utåndingsslaget har vært av tilnærmet lik lengde. Dette har imidlertid vist seg lite heldig for pasientens åndedrett, idet en innåndingstid som er lik omtrent halvparten av utåndings-tiden har vist seg gunstigere. The present invention relates to a respirator device of the type where the pressure impulses are provided by means of an air pump driven over an eccentric device. By virtue of their functioning, such ventilator pumps must have an unnecessarily large volume in order to achieve the correct pressure curve for providing the patient's inhalation and exhalation functions. Such ventilator pumps have previously been operated by e.g. an engine which, over a crankshaft or an eccentric, has moved the piston back and forth at a regular rate, i.e. the inhalation stroke and exhalation stroke have been of approximately the same length. However, this has proved to be unlucky for the patient's breathing, as an inhalation time equal to approximately half of the exhalation time has proved more favorable.
Ved tidligere slike kjente respirator-anordninger har der i tilkoblingsledningen til selve respiratorskjoldet e. 1. vært anordnet åpninger for utjevning av trykket under pumpens funksjonering. Derved blir imidlertid luftforbruket meget stort og an-ordningens dimensjonering blir plasskre-vende. In previously known respirator devices of this type, there have been openings in the connecting line to the respirator shield itself e. 1. to equalize the pressure during the pump's operation. Thereby, however, the air consumption becomes very large and the dimensioning of the device becomes space-consuming.
Det er oppfinnelsens hensikt å tilveie-bringe en respiratoranordning hvorved oppnåes en gunstigere forløpende trykk-kurve for inn- og utånding, samtidig som anordningen kan gjøres med betydelig mindre dimensjoner enn de tidligere kjente slike. It is the purpose of the invention to provide a respirator device whereby a more favorable continuous pressure curve for inhalation and exhalation is achieved, while at the same time the device can be made with significantly smaller dimensions than the previously known ones.
Til bedre forståelse av oppfinnelsen skal denne beskrives nærmere under hen-visning til tegningen, hvor For a better understanding of the invention, it will be described in more detail with reference to the drawing, where
fig. 1 skjematisk viser drivorganene for respiratoranordningen ifølge oppfinnelsen, og fig. 1 schematically shows the drive members for the respirator device according to the invention, and
fig. 2 viser en kurve til bedre forståelse av denne. fig. 2 shows a curve for a better understanding of this.
Respiratorpumpen består av en i den ene ende åpen sylinder 1, i hvilken et stem-pel 2 med tetningskant 3 kan beveges frem og tilbake ved hjelp av en stempelstang 4. Bevegelsen skjer ved hjelp av en hjerteskive 5 som roterer om en motordrevet aksel 6, idet bevegelsen til stempelstangen 4 skjer over kamfølgeren 7. The respirator pump consists of a cylinder 1 open at one end, in which a piston 2 with a sealing edge 3 can be moved back and forth by means of a piston rod 4. The movement takes place by means of a heart disk 5 which rotates about a motor-driven shaft 6, as the movement of the piston rod 4 takes place over the cam follower 7.
Konturlinjen for hjerteskiven er slik tilpasset at skivens rotasjon gir to konstante stempelhastigheter, en for inn- og en for utånding, samtidig som stempel-hastigheten ikke avtar (øker) i nærheten av topp- eller bunnstilling. Dette sammen med de senere nevnte ventiler muliggjør det trykkdiagram som er vist helt opptruk-ket i fig. 2. The contour line for the heart disc is adapted in such a way that the rotation of the disc gives two constant piston speeds, one for inhalation and one for exhalation, while the piston speed does not decrease (increase) near the top or bottom position. This, together with the valves mentioned later, enables the pressure diagram which is shown completely drawn in fig. 2.
Ved tidligere kjente anordninger skjed-de trykkfallet, eventuelt -stigningen, etter et noe krummere forløp, f. eks. slik som antydet med strekede linjer i fig. 2, mens det er ønskelig med en steilt forløpende kurve, spesielt for trykkstigningen etter innåndingsperioden, slik som vist helt opp-trukket i fig. 2. In the case of previously known devices, the pressure drop, or possibly the rise, took place after a somewhat more curved course, e.g. as indicated by dashed lines in fig. 2, while a steeply running curve is desirable, especially for the pressure rise after the inhalation period, as shown fully drawn up in fig. 2.
Den stilling som anordningen i fig. 1 inntar svarer omtrent til punktet x på den helt opptrukne kurve i fig. 2, idet pumpe-stemplet nesten har nådd ytterstillingen, dvs. innåndingsperioden er praktisk talt avsluttet. Et hensiktsmessig undertrykk er ca. 25 gram pr. cm2 med en åndedrettsfre-kvens på ca. 20 pr. minutt. The position in which the device in fig. 1 takes approximately the point x on the fully drawn curve in fig. 2, as the pump piston has almost reached the extreme position, i.e. the inhalation period has practically ended. An appropriate negative pressure is approx. 25 grams per cm2 with a respiratory frequency of approx. 20 per minute.
I tilkoblingsledningen 9 til respiratorskjoldet e. 1. (ikke vist) er der anbrakt to klappventiler henholdsvis 10 og 11, som er fjærbelastet 12, 13. Fjærbelastningen er slik tilpasset at ventilen først åpner etter et visst under- resp. overtrykk og for inn-sugningsventilens 11 vedkommende er denne fjærkraft 13 regulerbar, f. eks. ved stillskruen 14. Under innåndingsslaget, altså den under O-linjen liggende del av kurven på fig. 2, vil derfor undertrykket raskt øke fra 0 til ca. 25 gram pr. cm-', på hvilket tidspunkt ventilen 11 åpner seg og slipper luft inn fra atmosfæren. Undertrykket vil ikke stige ytterligere og man får da en stort sett rektangulært forlø-pende kurve, slik som antydet i fig. 2. Under pumpens tilbakegående slag, dvs. utåndingsslaget, behøves der et forholdsvis lite overtrykk, idet utåndingen for pasien-ten vanligvis skjer ved at brystet synker sammen uten anvendelse av noe nevnever-dig press av luften i respiratorskjoldet, altså under et forløp som det i fig. 2 viste. In the connection line 9 to the respirator shield e. 1. (not shown) there are two flap valves 10 and 11 respectively, which are spring-loaded 12, 13. The spring load is adapted so that the valve only opens after a certain under- or excess pressure and for the intake valve 11, this spring force 13 is adjustable, e.g. at the adjusting screw 14. During the inhalation stroke, i.e. the part of the curve below the O line in fig. 2, the negative pressure will therefore quickly increase from 0 to approx. 25 grams per cm-', at which point the valve 11 opens and lets in air from the atmosphere. The negative pressure will not rise further and you then get a largely rectangular continuous curve, as indicated in fig. 2. During the return stroke of the pump, i.e. the exhalation stroke, a relatively small excess pressure is required, as exhalation for the patient usually occurs by the chest collapsing without the application of any significant pressure of the air in the respirator shield, i.e. during a process such as in fig. 2 showed.
For bedre å utjevne belastningen på motoren som driver akselen 6 kan med fordel kamfølgeren 7 være forbundet med hjerteskiven 5 ved hjelp av en fjæranord-ning 8 festet eksentrisk til skiven 5 i for-hold til rotasjonsakselen 6, f. eks. til tap-pen 15. Ved denne anordning vil den i fjæren oppmagasinerte spenning under til-bakeføringen bidra til at kamfølgeren 7 ligger til stadighet mot hjerteskivens 5 kontur, hvorved kraftforbruket utjevnes under skivens rotasjon, hvilket igjen vil si at anordningen ifølge oppfinnelsen kan drives med en betydelig svakere motor enn om ikke denne fjærforbindelse forelå. Fjæranordningen 8 har også den fordel at maksimal forlengelse er meget mindre enn om fjæren hadde vært fast montert i den ene ende av stempelstangen. Om, ønskes kan stempelpumpen som anvendes for respiratoren erstattes med et hulstempel som arbeider med væskelåstetning hvorved friksjon og andre forstyrrende krefter for anordningen elimineres. To better equalize the load on the motor that drives the shaft 6, the cam follower 7 can advantageously be connected to the heart disk 5 by means of a spring device 8 attached eccentrically to the disk 5 in relation to the rotation shaft 6, e.g. to the pin 15. With this device, the tension stored in the spring during the return will contribute to the cam follower 7 constantly lying against the contour of the heart disc 5, whereby the power consumption is equalized during the rotation of the disc, which again means that the device according to the invention can be operated with a significantly weaker engine than if this spring connection were not present. The spring device 8 also has the advantage that the maximum extension is much less than if the spring had been permanently mounted at one end of the piston rod. If desired, the piston pump used for the respirator can be replaced with a hollow piston that works with a liquid lock seal, whereby friction and other disturbing forces for the device are eliminated.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE845265A SE314029B (en) | 1965-06-24 | 1965-06-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO119135B true NO119135B (en) | 1970-03-23 |
Family
ID=20274109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO16361766A NO119135B (en) | 1965-06-24 | 1966-06-23 |
Country Status (11)
Country | Link |
---|---|
JP (1) | JPS4933980Y1 (en) |
AT (1) | AT287600B (en) |
BE (1) | BE683037A (en) |
CH (1) | CH490580A (en) |
DE (2) | DE1634865A1 (en) |
DK (1) | DK112088B (en) |
FI (1) | FI47216C (en) |
GB (2) | GB1146307A (en) |
NL (1) | NL6608336A (en) |
NO (1) | NO119135B (en) |
SE (1) | SE314029B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4238896A (en) * | 1979-08-24 | 1980-12-16 | Caterpillar Tractor Co. | Cutting edge assembly for a loader bucket |
DE102004015489B3 (en) * | 2004-03-26 | 2005-05-25 | Kurz, Andreas, Dipl.-Ing. | Shovel-tilting device used for attaching to an excavator, shovel dozer, etc. comprises a shovel pivotably mounted on a shovel support via three different pivot axes so that the shovel can be tilted forward, to the right and to the left |
-
1965
- 1965-06-24 SE SE845265A patent/SE314029B/xx unknown
-
1966
- 1966-06-16 NL NL6608336A patent/NL6608336A/xx unknown
- 1966-06-17 GB GB2720066A patent/GB1146307A/en not_active Expired
- 1966-06-20 GB GB2736666A patent/GB1146308A/en not_active Expired
- 1966-06-21 FI FI165166A patent/FI47216C/en active
- 1966-06-21 DE DE19661634865 patent/DE1634865A1/en active Pending
- 1966-06-22 DE DE19661634866 patent/DE1634866A1/en active Pending
- 1966-06-23 BE BE683037D patent/BE683037A/xx unknown
- 1966-06-23 CH CH912366A patent/CH490580A/en not_active IP Right Cessation
- 1966-06-23 DK DK324066A patent/DK112088B/en unknown
- 1966-06-23 NO NO16361766A patent/NO119135B/no unknown
- 1966-06-23 AT AT598366A patent/AT287600B/en not_active IP Right Cessation
-
1969
- 1969-08-15 JP JP7706269U patent/JPS4933980Y1/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1634866A1 (en) | 1971-03-11 |
SE314029B (en) | 1969-08-25 |
GB1146308A (en) | 1969-03-26 |
NL6608336A (en) | 1966-12-27 |
FI47216C (en) | 1973-10-10 |
GB1146307A (en) | 1969-03-26 |
FI47216B (en) | 1973-07-02 |
CH490580A (en) | 1970-05-15 |
AT287600B (en) | 1971-01-25 |
DK112088B (en) | 1968-11-04 |
DE1634865A1 (en) | 1971-02-04 |
BE683037A (en) | 1966-12-01 |
JPS4933980Y1 (en) | 1974-09-13 |
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