NO337035B1 - ELECTRICAL LINEAR ACTUATOR - Google Patents
ELECTRICAL LINEAR ACTUATOR Download PDFInfo
- Publication number
- NO337035B1 NO337035B1 NO20150107A NO20150107A NO337035B1 NO 337035 B1 NO337035 B1 NO 337035B1 NO 20150107 A NO20150107 A NO 20150107A NO 20150107 A NO20150107 A NO 20150107A NO 337035 B1 NO337035 B1 NO 337035B1
- Authority
- NO
- Norway
- Prior art keywords
- spindle
- actuator
- gearbox
- sleeve
- angle drive
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2031—Actuator casings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Valve Device For Special Equipments (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Description
Foreliggende oppfinnelse vedrører en lineær aktuator. Aktuatoren omdanner en roterende bevegelse mottatt fra en motor, slik som en elektromotor, til en lineær bevegelse. En slik aktuator kan ha mange bruksområder, for eksempel kan den brukes til å drive ei stempelpumpe. The present invention relates to a linear actuator. The actuator converts a rotary motion received from a motor, such as an electric motor, into a linear motion. Such an actuator can have many applications, for example it can be used to drive a piston pump.
Lineære aktuatorer finnes i en mengde utførelser. En utgave omfatter en sentral spindel som drives av en motor. Spindelen har et spiralformet spor. Utenpå spindelen ligger det en sylinder. I den indre veggen på sylinderen er det et tilsvarende spor. En eller flere kuler ligger i sporene og kobler spindelen til sylinderen. Føringer hindrer sylinderen fra å dreie seg. Når spindelen roteres vil sylinderen forflyttes lineært. Linear actuators are available in a variety of designs. One version includes a central spindle driven by a motor. The spindle has a spiral groove. Outside the spindle there is a cylinder. In the inner wall of the cylinder there is a corresponding groove. One or more balls lie in the grooves and connect the spindle to the cylinder. Guides prevent the cylinder from turning. When the spindle is rotated, the cylinder will move linearly.
I kjente aktuatorer må spindelen opplagres i begge ender. Dette kan være en ulempe i situasjoner hvor det er umulig å anordne en opplagring i den ytre enden av spindelen. In known actuators, the spindle must be stored at both ends. This can be a disadvantage in situations where it is impossible to arrange a storage at the outer end of the spindle.
Fra DK/EP 2232101 T3 er det kjent en lineær aktuator omfattende en elektrisk motor som driver en gjenget spindel via et planetgir. Spindelen er i inngrep med en spindelmutter og driver denne frem og tilbake langs spindelen. From DK/EP 2232101 T3, a linear actuator comprising an electric motor which drives a threaded spindle via a planetary gear is known. The spindle engages with a spindle nut and drives this back and forth along the spindle.
SE 510 459 C2 beskriver en donkraft med en spindel og en løper plassert utenpå spindelen. Løperen står i forbindelse med en drivmutter, som igjen står i inngrep med spindelen, og kan forskyve løperen langs spindelen når spindelen dreies. SE 510 459 C2 describes a jack with a spindle and a runner placed outside the spindle. The runner is connected to a drive nut, which in turn engages with the spindle, and can displace the runner along the spindle when the spindle is turned.
Fra DK/EP 2232100 T3 og US 2014/0300228 Al er det kjent lignende aktuatorer. Similar actuators are known from DK/EP 2232100 T3 and US 2014/0300228 Al.
Det er en hensikt med foreliggende oppfinnelse å frembringe en lineær aktuator som unngår den ovenfor nevnte ulempe, og derfor har et videre anvendelsesområde. It is an aim of the present invention to produce a linear actuator which avoids the above-mentioned disadvantage, and therefore has a wider field of application.
Dette løses med en aktuator slik det fremgår av de etterfølgende patentkrav. This is solved with an actuator, as is evident from the subsequent patent claims.
Oppfinnelsen vil nå bli beskrevet i detalj med henvisning til de vedføyde tegninger, hvor The invention will now be described in detail with reference to the attached drawings, where
Fig. 1 viser aktuatoren i langsgående snitt, Fig. 1 shows the actuator in longitudinal section,
Fig. 2 viser aktuatoren i tverrsnitt, og Fig. 2 shows the actuator in cross-section, and
Fig. 3 viser en komponent som inngår i aktuatoren. Fig. 3 shows a component included in the actuator.
Som Fig. 1 viser omfatter aktuatoren en motor 1 som driver en spindel 3 via en gearboks 2 og/eller et vinkeldrev (ikke vist). Motoren kan være enhver type som egner seg til formålet. Dette er for en stor del avhengig av hvilke kraftkilder som er tilgjengelig. Fortrinnsvis brukes en elektromotor, men aktuatoren kan også drives av pneumatiske eller hydrauliske motorer. Likeledes kan gearboksen være enhver egnet type, slik som et planetgear. Aktuatoren kan også omfatte et vinkeldrev, spesielt om det er ønskelig å begrense aktuatorens dimensjoner i lengderetningen. Vinkeldrevet kan være montert mellom motoren og gearboksen, eller mellom geraboksen og spindelen 3. Funksjonene til vinkeldrevet og gearboksen kan også være kombinert i et snekkedrev. As Fig. 1 shows, the actuator comprises a motor 1 which drives a spindle 3 via a gearbox 2 and/or an angle drive (not shown). The engine can be any type suitable for the purpose. This largely depends on which power sources are available. An electric motor is preferably used, but the actuator can also be driven by pneumatic or hydraulic motors. Likewise, the gearbox can be any suitable type, such as a planetary gear. The actuator can also comprise an angle drive, especially if it is desired to limit the dimensions of the actuator in the longitudinal direction. The angle drive can be mounted between the motor and the gearbox, or between the gear box and the spindle 3. The functions of the angle drive and the gearbox can also be combined in a worm drive.
I spindelen 3 er det et dobbelt spiralformet spor 6, idet sporet starter ved den ene enden av spindelen, går rundt og langs spindelen til den andre enden av spindelen, og så går tilbake til utgangspunktet med motsatt skrueretning. Sporet 6 danner således en kontinuerlig sløyfe. In the spindle 3 there is a double helical groove 6, the groove starting at one end of the spindle, going around and along the spindle to the other end of the spindle, and then returning to the starting point with the opposite screw direction. The track 6 thus forms a continuous loop.
Utenpå spindelen 3 er det plassert ei hylse 4. I veggen på hylsa 4 er det to langsgående hull 10a, 10b (Fig. 2). I hullene 10a, 10b er det satt inn to langsgående føringsstenger lia, 11b. Stengene er i en ende festet til gearboksen 2. Stengene hindrer hylsa 4 fra å rotere, dvs. at hylsa 4 bare kan bevege seg lineært i forhold til spindelen 3. A sleeve 4 is placed on the outside of the spindle 3. In the wall of the sleeve 4 there are two longitudinal holes 10a, 10b (Fig. 2). In the holes 10a, 10b, two longitudinal guide rods 11a, 11b are inserted. The rods are attached at one end to the gearbox 2. The rods prevent the sleeve 4 from rotating, i.e. that the sleeve 4 can only move linearly in relation to the spindle 3.
I et tverrgående hull 8 i veggen på hylsa 4 er det satt inn en medbringer 5. Medbringeren kan rotere i hullet 8 og holdes i hullet 8 av et lokk 12 som dekker åpningen på hullet. Medbringeren, vist i detalj i Fig. 3, omfatter et sylindrisk legeme 5a og en kniv 5b som er montert i enden av sylinderen. Kniven griper inn i sporet 6 og er utformet med en konkav egg tilpasset den runde spindelen 3. Når spindelen 3 dreies vil medbringeren 5 drive hylsa 4 med seg. Når medbringeren 5 kommer til enden av spindelen 3 (og sporet 6), vil den rotere ca. en kvart omdreining i hullet 8, og følge sporet 6 tilbake mot motsatt ende av spindelen 3. Hylsa vil på denne måten drives ut og inn i forhold til spindelen. A driver 5 is inserted in a transverse hole 8 in the wall of the sleeve 4. The driver can rotate in the hole 8 and is held in the hole 8 by a lid 12 which covers the opening of the hole. The driver, shown in detail in Fig. 3, comprises a cylindrical body 5a and a knife 5b which is mounted at the end of the cylinder. The knife engages in the slot 6 and is designed with a concave egg adapted to the round spindle 3. When the spindle 3 is turned, the driver 5 will drive the sleeve 4 with it. When the driver 5 reaches the end of the spindle 3 (and the slot 6), it will rotate approx. a quarter of a turn in the hole 8, and follow the groove 6 back towards the opposite end of the spindle 3. In this way, the sleeve will be driven out and in in relation to the spindle.
Spindelen kan også være utstyrt med bare et enkelt spiralspor, men da må dreieretningen på spindelen (dvs. motoren) omkastes når medbringeren kommer til enden av sporet for å drive hylsa i motsatt retning. Aktuatoren kan da være utstyrt med endebrytere som er innrettet til enten å stoppe motoren når medbringeren når enden av sporet, eller innrettet til å kaste om motorens dreieretning. The spindle can also be equipped with just a single spiral track, but then the direction of rotation of the spindle (ie the motor) must be reversed when the driver reaches the end of the track to drive the sleeve in the opposite direction. The actuator can then be equipped with limit switches which are arranged to either stop the motor when the carrier reaches the end of the track, or arranged to reverse the direction of rotation of the motor.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20150107A NO337035B1 (en) | 2015-01-22 | 2015-01-22 | ELECTRICAL LINEAR ACTUATOR |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20150107A NO337035B1 (en) | 2015-01-22 | 2015-01-22 | ELECTRICAL LINEAR ACTUATOR |
Publications (2)
Publication Number | Publication Date |
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NO20150107A1 NO20150107A1 (en) | 2016-01-04 |
NO337035B1 true NO337035B1 (en) | 2016-01-04 |
Family
ID=61800202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20150107A NO337035B1 (en) | 2015-01-22 | 2015-01-22 | ELECTRICAL LINEAR ACTUATOR |
Country Status (1)
Country | Link |
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NO (1) | NO337035B1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE510459C2 (en) * | 1996-03-26 | 1999-05-25 | Linvent Ab | Geared power unit for linear movement |
DK2232100T3 (en) * | 2008-01-12 | 2013-01-02 | Linak As | LINEAR ACTUATOR |
DK2232101T3 (en) * | 2008-01-12 | 2013-02-11 | Linak As | Linear actuator |
US20140300228A1 (en) * | 2013-04-05 | 2014-10-09 | Festo Ag & Co. Kg | Linear Actuator |
-
2015
- 2015-01-22 NO NO20150107A patent/NO337035B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE510459C2 (en) * | 1996-03-26 | 1999-05-25 | Linvent Ab | Geared power unit for linear movement |
DK2232100T3 (en) * | 2008-01-12 | 2013-01-02 | Linak As | LINEAR ACTUATOR |
DK2232101T3 (en) * | 2008-01-12 | 2013-02-11 | Linak As | Linear actuator |
US20140300228A1 (en) * | 2013-04-05 | 2014-10-09 | Festo Ag & Co. Kg | Linear Actuator |
Also Published As
Publication number | Publication date |
---|---|
NO20150107A1 (en) | 2016-01-04 |
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MM1K | Lapsed by not paying the annual fees |