CA2024584A1 - Wheeled transfer device for moving an aircraft - Google Patents
Wheeled transfer device for moving an aircraftInfo
- Publication number
- CA2024584A1 CA2024584A1 CA 2024584 CA2024584A CA2024584A1 CA 2024584 A1 CA2024584 A1 CA 2024584A1 CA 2024584 CA2024584 CA 2024584 CA 2024584 A CA2024584 A CA 2024584A CA 2024584 A1 CA2024584 A1 CA 2024584A1
- Authority
- CA
- Canada
- Prior art keywords
- transfer device
- wheels
- transfer
- friction roller
- axle
- 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.)
- Abandoned
Links
Landscapes
- Motorcycle And Bicycle Frame (AREA)
Abstract
(57) Abstract The object of the invention is a transfer device equipped with support wheels (4) to move an aircraft (1) or other device equipped with double wheels (6) over a base (2), which transfer device includes at least one so-called self-wedging friction roller (3) which grips the wheels (6) of the device to be moved beneath their axles, and two support wheels to drive at essentially the same peripheral velocity in the opposite direction, and in which transfer device these two driving support wheels (4) are located close to the line of the friction roller (3) The transfer device in accordance with the invention includes a pushing section (12) with its own wheels, power source drive and steering devices, and that the friction rollers and driving support wheels are located in a transfer unit (9), which is connected to the pushing section (12) by means of a boom (11), which is connected to the transfer unit (9) by means of a vertical point (10) and to the pushing unit (11) by means of a horizontal joint (13).
Description
2024!~8~ ~
A Wheeled Transfer Device for moving an Aircraft The ob~ect of the invention i5 a transfer device equipped with wheels for movlng an aircraft or other wheeled device over a 5 base, which transfer device includes at least one ~o-called self- wedging frlction roller which presses onto the wheel~ o~
the device to be moved, beneath their axle~, drive devices to drive tho friction roller and two support wheels at ess-ntially the same peripherical velocity in different directions, and in 10 whiah tran-~er devio- these two driving ~upport wheels are located close to the centre line of the friction roller Here double wheel also means two neighbouring wheels o~ a bogie and friction roller also means a friction track lS The trans~er of al~araft on an airfield usually take~ place u~lng tug tractor~, which must be constructed hoavily, ~o that they will have th- neces~ary tractive capacity Th- oon-truction o~ a tran~er device can be e~-ntially 20 lighten-d when the driving rOrc- i~ transrerred to the ground wheel of the aircrart rrom a drlv- wheel or friction roller belonglng to th- transrer devic- Thi~ pre~uppo~e- that the ~rlatlon roller i~ pres~ed against th- airora~t ground wheol whloh uoh a rOro- that is u~ually a rew peroent of th- weight ~S ooming onto th- wh~
~hi~ invention is eop-cially connected to tran~-r d-vic-~
quipp-d with ~o-called s-lf-wedging friction roller-, whioh ar-known, for example, from the following patent publications, SE
30 437137, GB 845,105, SU 425527, and US 4,125,029 and from Finnish Patent Application 870710 The transfer device ~hown in the US
publication ~ differs considerably from the two previouely mentioned in that it i8 only applicable to pulling the device to be moved In the two ~irst as in thi~ invention the question i~
3S one of a transfer device equipped with a pushing friction roller In these the aforementioned compr-~sive force i~ created by the combined effect of a turning moment and the transfer device's own driving support wheels The known devic-~ demand either good friction conditions or they must be located very low 40 down, which causes difficulties in construction A small 202458~
friction roller can always be placed quite low down, but the surface pressure on the ground wheel then easily becomes greater than that permitted. The known devices are poorly adapted to moving aircraft equipped with double wheels. For example a 5 transfer deviae in accordance with the GB publicatton doe~ not permit the aircraft to turn when the double wheel~ would rotate at di~ferent speeds.
: : .
~ he intention o~ this invention i~ to oreate a new tran~er 10 devl¢e equlpped wlth a so-called self-wedglng rrictlon roller, whlch can operate under very much poorer ~riction conditions than earlier devlces, in which case the transfer device can operate when the rrlction roller is oven quite high in relation to the axle of the ground wheel o~ the device to be moved. The 15 prlnclpal characterl~tlcs o~ the lnventlon appear in the aocompanylng Patent Clalm 1. The maln prlnclple o~ the device iB
to us- the transfer devlce to mul:tlply the pushing power. Under typical conditions a coef~icient of 10 - 15 can be achieved.
Then ~or example the 1 tn (10 kN~ push of a small tractor acting 20 a~ a pusher multlplle~ to 10 - lS tn, whlch power 1B enough to move v-ry large alrcra~t. ~y mean~ o~ the lnventlon ln accordanc- wlth Patent Clalm 2 the lntentlon 1~ to creato a trans~er device e~peolally lntended to move devloe~ wlth double wheel~, whlch permlt~ the devloe belng moved to turn, when the 2S double wheels rotate at di~erent ~p-ed~
The forms of application in accordance with Patent Claims 3 - 5 ~re technloally very advantageous. The form of applioation in acoordance with Patent Clalm 6 makes lt po~ible to use a small 30 traotor as a pusher, ln whloh oase the trans~er unit and boom ~orm a detaohable separate accessory. In a transfer device ln aocordance with Patent Claim 7 the steering is lmplemented in lt~ own movement advantageously by turnlng the trans~er unit in relation to the boom.
In what ~ollows the invention i6 illustrated by me~n~ o~ an example by reference to the accompanying ~igures ln whlch 202~5~4 Flgure 1 shows the trans~er device seen trom above Figure 2 6hows the 6ituation in Figure 1 seem from the side.
5 The trans~er device shown by Figures 1 and 2 is intended ~or moving an aircraft 1 on an air~ield 2 In the figure~ aircrart ~ hown a~ only a part of the undercarriage and ground wheel~
'; ' . ' 10 ~he prinolpal component~ of the tranefer device are the tran~er unit 9 its-l~ and tho pu~hlng section 12 and th- boom 11 th~t conn-ct~ them The pu~hing ~ection i~ advantageou~ly a small traotor, when th- tran~er unit 9 and the boom 11 form a d-taohabl- acoes~ory Th- tran~er unit 9 1~ oonneot-d to the 15 boom 11 by means of a vertlcal ~olnt 10, whioh makes it possible ~or th- airora~t 1 to turn while being pu~hed The ~pring~ 22 r-turn th- tran-~-r unit 9 to a o ntral po~ition a~t-r po~ible d-vlatlon 20 Tho tran-~er unit 9 i- construoted on a ~rame, to whioh two l--v- axl-- 23 ar- attaoh-d by b-arlnq- on eaoh ld- o~ th-a~- lln- th--- ar- combln-d by a oommon maln axl- 16, round ; whlch both l--v-- ar- ~ree to rotat- 8impl- ~ournal b-arlng~
are adoquat- hero, becaus- the ~riotion roller- generally rotate 2S at the ~ame speed Frlotlon roll-r 3 1~ permanently attaohed to -v- axl- 23 and ~upport wh--l 4 i~ attaoh-d to lt by a b-arlng Th- hydraullo motor- 5 with qoarbox-~ aro attaoh-d to ~th- ~ram- and tholr axl- ~orms th- drlve axle 20, on whioh thor-the drlvo toothwheel 17 and drive chainwheol 19 Th~ orm 30 part o~ the gearwheel drive 7, by mean~ o~ which drive 1 tran~mltted to the upport wheel 4, and o~ the chain trlve, by m-an~ Or whlch drlve 1~ tran-mitted to the ~riction roll-r 3 The drlvon toothwheel 18 18 attached to support wh--l 4 and inoludes a oentre hole through whlch ~leove axl- 23 runs Tho 35 drlven oh~lnwheol 23 is attaohed to the sleeve axle 23 lt~el~
: :,~ , . ,: . .
:,, ~-.... - ~-,' 202~4 ~ ::
.
High-pressure hydraulic oil is produced in the pump unit in the tractor The figures do not show the hydraulic connection between the transfer unit and the tra¢tor -. ,.-.:
.
5 By uoing parallel toothwheel 7 and chain tran~mi~sion 8 moment in dif~erent directions in the friction roller~ 3 and support wheels 4 are created ~imply, however, the peripheral velocitie~
remain Or the ~ame absolute value . .
10 Figure 2 ~hows the connection o~ the tran~fer unit 9 to the pushing unit 12 The boom 11 that transmit~ the push i8 connected in a horizontal dire¢~ion ~y means o~ ~oint 13 to pu~hing unit 12, which thus permi~s the tran~fer unit to move in accordance with the ~orm o~ the surface Or the airr~eld In lS order that the transfer device can be brought rapidly clo~e to an aircra~t 1 and taken away rrom it, the tran~er unit 9 can be sllghtly ralsed Or~ the ground by means o~ th- ~ointed auxllllary arm 14 The auxilliary arm 14 include~ oporating d-vlc- lS, by mean~ oS which it can be retract-d 80 that the 20 tran~er unlt 9 and wlth it the ~upport wheel~ 4 can be llrted o~ th- base 2 Th- pu-hing -otlon and the transSer unit oan naturally also be oon~truot-d as a ~ingle unlt The pushlng unit is then equipped 29 with only two drive wheel~ and operatlng devioe~, by mean~ Or which the transfer unit can be turned in ordor to ~teer the trans~-r devic-., , ~ . - . , ~ .
. , ,"~, ','~; .' ' ' ' ~'.
~-' : .
A Wheeled Transfer Device for moving an Aircraft The ob~ect of the invention i5 a transfer device equipped with wheels for movlng an aircraft or other wheeled device over a 5 base, which transfer device includes at least one ~o-called self- wedging frlction roller which presses onto the wheel~ o~
the device to be moved, beneath their axle~, drive devices to drive tho friction roller and two support wheels at ess-ntially the same peripherical velocity in different directions, and in 10 whiah tran-~er devio- these two driving ~upport wheels are located close to the centre line of the friction roller Here double wheel also means two neighbouring wheels o~ a bogie and friction roller also means a friction track lS The trans~er of al~araft on an airfield usually take~ place u~lng tug tractor~, which must be constructed hoavily, ~o that they will have th- neces~ary tractive capacity Th- oon-truction o~ a tran~er device can be e~-ntially 20 lighten-d when the driving rOrc- i~ transrerred to the ground wheel of the aircrart rrom a drlv- wheel or friction roller belonglng to th- transrer devic- Thi~ pre~uppo~e- that the ~rlatlon roller i~ pres~ed against th- airora~t ground wheol whloh uoh a rOro- that is u~ually a rew peroent of th- weight ~S ooming onto th- wh~
~hi~ invention is eop-cially connected to tran~-r d-vic-~
quipp-d with ~o-called s-lf-wedging friction roller-, whioh ar-known, for example, from the following patent publications, SE
30 437137, GB 845,105, SU 425527, and US 4,125,029 and from Finnish Patent Application 870710 The transfer device ~hown in the US
publication ~ differs considerably from the two previouely mentioned in that it i8 only applicable to pulling the device to be moved In the two ~irst as in thi~ invention the question i~
3S one of a transfer device equipped with a pushing friction roller In these the aforementioned compr-~sive force i~ created by the combined effect of a turning moment and the transfer device's own driving support wheels The known devic-~ demand either good friction conditions or they must be located very low 40 down, which causes difficulties in construction A small 202458~
friction roller can always be placed quite low down, but the surface pressure on the ground wheel then easily becomes greater than that permitted. The known devices are poorly adapted to moving aircraft equipped with double wheels. For example a 5 transfer deviae in accordance with the GB publicatton doe~ not permit the aircraft to turn when the double wheel~ would rotate at di~ferent speeds.
: : .
~ he intention o~ this invention i~ to oreate a new tran~er 10 devl¢e equlpped wlth a so-called self-wedglng rrictlon roller, whlch can operate under very much poorer ~riction conditions than earlier devlces, in which case the transfer device can operate when the rrlction roller is oven quite high in relation to the axle of the ground wheel o~ the device to be moved. The 15 prlnclpal characterl~tlcs o~ the lnventlon appear in the aocompanylng Patent Clalm 1. The maln prlnclple o~ the device iB
to us- the transfer devlce to mul:tlply the pushing power. Under typical conditions a coef~icient of 10 - 15 can be achieved.
Then ~or example the 1 tn (10 kN~ push of a small tractor acting 20 a~ a pusher multlplle~ to 10 - lS tn, whlch power 1B enough to move v-ry large alrcra~t. ~y mean~ o~ the lnventlon ln accordanc- wlth Patent Clalm 2 the lntentlon 1~ to creato a trans~er device e~peolally lntended to move devloe~ wlth double wheel~, whlch permlt~ the devloe belng moved to turn, when the 2S double wheels rotate at di~erent ~p-ed~
The forms of application in accordance with Patent Claims 3 - 5 ~re technloally very advantageous. The form of applioation in acoordance with Patent Clalm 6 makes lt po~ible to use a small 30 traotor as a pusher, ln whloh oase the trans~er unit and boom ~orm a detaohable separate accessory. In a transfer device ln aocordance with Patent Claim 7 the steering is lmplemented in lt~ own movement advantageously by turnlng the trans~er unit in relation to the boom.
In what ~ollows the invention i6 illustrated by me~n~ o~ an example by reference to the accompanying ~igures ln whlch 202~5~4 Flgure 1 shows the trans~er device seen trom above Figure 2 6hows the 6ituation in Figure 1 seem from the side.
5 The trans~er device shown by Figures 1 and 2 is intended ~or moving an aircraft 1 on an air~ield 2 In the figure~ aircrart ~ hown a~ only a part of the undercarriage and ground wheel~
'; ' . ' 10 ~he prinolpal component~ of the tranefer device are the tran~er unit 9 its-l~ and tho pu~hlng section 12 and th- boom 11 th~t conn-ct~ them The pu~hing ~ection i~ advantageou~ly a small traotor, when th- tran~er unit 9 and the boom 11 form a d-taohabl- acoes~ory Th- tran~er unit 9 1~ oonneot-d to the 15 boom 11 by means of a vertlcal ~olnt 10, whioh makes it possible ~or th- airora~t 1 to turn while being pu~hed The ~pring~ 22 r-turn th- tran-~-r unit 9 to a o ntral po~ition a~t-r po~ible d-vlatlon 20 Tho tran-~er unit 9 i- construoted on a ~rame, to whioh two l--v- axl-- 23 ar- attaoh-d by b-arlnq- on eaoh ld- o~ th-a~- lln- th--- ar- combln-d by a oommon maln axl- 16, round ; whlch both l--v-- ar- ~ree to rotat- 8impl- ~ournal b-arlng~
are adoquat- hero, becaus- the ~riotion roller- generally rotate 2S at the ~ame speed Frlotlon roll-r 3 1~ permanently attaohed to -v- axl- 23 and ~upport wh--l 4 i~ attaoh-d to lt by a b-arlng Th- hydraullo motor- 5 with qoarbox-~ aro attaoh-d to ~th- ~ram- and tholr axl- ~orms th- drlve axle 20, on whioh thor-the drlvo toothwheel 17 and drive chainwheol 19 Th~ orm 30 part o~ the gearwheel drive 7, by mean~ o~ which drive 1 tran~mltted to the upport wheel 4, and o~ the chain trlve, by m-an~ Or whlch drlve 1~ tran-mitted to the ~riction roll-r 3 The drlvon toothwheel 18 18 attached to support wh--l 4 and inoludes a oentre hole through whlch ~leove axl- 23 runs Tho 35 drlven oh~lnwheol 23 is attaohed to the sleeve axle 23 lt~el~
: :,~ , . ,: . .
:,, ~-.... - ~-,' 202~4 ~ ::
.
High-pressure hydraulic oil is produced in the pump unit in the tractor The figures do not show the hydraulic connection between the transfer unit and the tra¢tor -. ,.-.:
.
5 By uoing parallel toothwheel 7 and chain tran~mi~sion 8 moment in dif~erent directions in the friction roller~ 3 and support wheels 4 are created ~imply, however, the peripheral velocitie~
remain Or the ~ame absolute value . .
10 Figure 2 ~hows the connection o~ the tran~fer unit 9 to the pushing unit 12 The boom 11 that transmit~ the push i8 connected in a horizontal dire¢~ion ~y means o~ ~oint 13 to pu~hing unit 12, which thus permi~s the tran~fer unit to move in accordance with the ~orm o~ the surface Or the airr~eld In lS order that the transfer device can be brought rapidly clo~e to an aircra~t 1 and taken away rrom it, the tran~er unit 9 can be sllghtly ralsed Or~ the ground by means o~ th- ~ointed auxllllary arm 14 The auxilliary arm 14 include~ oporating d-vlc- lS, by mean~ oS which it can be retract-d 80 that the 20 tran~er unlt 9 and wlth it the ~upport wheel~ 4 can be llrted o~ th- base 2 Th- pu-hing -otlon and the transSer unit oan naturally also be oon~truot-d as a ~ingle unlt The pushlng unit is then equipped 29 with only two drive wheel~ and operatlng devioe~, by mean~ Or which the transfer unit can be turned in ordor to ~teer the trans~-r devic-., , ~ . - . , ~ .
. , ,"~, ','~; .' ' ' ' ~'.
~-' : .
Claims (7)
1. A transfer device equipped with support wheels (4) for moving an aircraft (1) or other device equipped with double ground wheels (6) over a base (2), which transfer device includes at least one so-called self-wedging friction roller (3) that takes hold of the ground wheels (6) of the device to be moved beneath their axles, drive devices to rotate the friction roller (3) and two support wheels (4) at essentially the same peripheral velocity in different directions, and in which transfer device these two driving support wheels (4) are located close to the axle line of the friction roller (3), characterized in that the transfer device includes a pushing section (12) equipped with wheels and devices to drive them, and that the friction rollers and driving support wheels (4) are located in a transfer unit (9), which is connected to the pushing section (12) by means of a vertical joint (10).
2. A transfer device in accordance with Patent Claim 1, characterized in that the transfer device includes two friction rollers (3), which are equipped with separate devices to rotate them (7, 8) and by means of which it is possible to separately rotate the double ground wheels (6) of the device (1) to be moved.
3. A transfer device in accordance with Patent Claims 1 or 2 characterized in that both the friction roller (3) and the driving support wheel (4) are located on the same axle (16, 23).
4. A transfer device in accordance with Patent Claim 3, characterized in that that both the sleeve axle (23), which is joined to the transfer unit (9) frame, and one friction roller (3) and the wheel (20) driving it, that form part of the transfer device, are permanently locked to this sleeve axle (23) and that the driving support wheel (4) is attached to this sleeve axle (23) by bearings.
5. A transfer device in accordance with Patent Claims 3 or 4 characterized in that both the driving devices (7, 8) include toothwheel (7) and chain drive (8) transmission between the aforementioned axle (16) and drive axle (17), in which the driving toothwheel (17) and chainwheel (19) are permanently located on the drive axle (20), and in which one of the driven wheels (18, 20) is placed in permanent connection to the friction roller (3) and the other in permanent connection to the support wheel (4) and in which case the transmissions (7, 8) form the aforementioned peripheral velocities in different directions
6. A transfer device in accordance with one of the above Patent Claims 1 - 5, characterized in that the transfer device includes a boom, by means of which the transfer unit (9) is connected to the pushing section (12), and that the boom (11) is connected to the transfer unit (9) by means of the aforementioned joint (10) and to the pushing unit (12) by means of a horizontal joint (12).
7. A transfer device in accordance with one of the above Patent Claims 1 - 5, characterized in that the transfer device includes an operating device to turn the transfer unit (9) and thus to steer the entire transfer device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2024584 CA2024584A1 (en) | 1990-09-04 | 1990-09-04 | Wheeled transfer device for moving an aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2024584 CA2024584A1 (en) | 1990-09-04 | 1990-09-04 | Wheeled transfer device for moving an aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2024584A1 true CA2024584A1 (en) | 1992-03-05 |
Family
ID=4145889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2024584 Abandoned CA2024584A1 (en) | 1990-09-04 | 1990-09-04 | Wheeled transfer device for moving an aircraft |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2024584A1 (en) |
-
1990
- 1990-09-04 CA CA 2024584 patent/CA2024584A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |