CA2042387A1 - Levitation undercarriage with servomotor driven air gap regulation - Google Patents
Levitation undercarriage with servomotor driven air gap regulationInfo
- Publication number
- CA2042387A1 CA2042387A1 CA 2042387 CA2042387A CA2042387A1 CA 2042387 A1 CA2042387 A1 CA 2042387A1 CA 2042387 CA2042387 CA 2042387 CA 2042387 A CA2042387 A CA 2042387A CA 2042387 A1 CA2042387 A1 CA 2042387A1
- Authority
- CA
- Canada
- Prior art keywords
- levitation
- undercarriage
- air gap
- track
- load
- 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
- 238000005339 levitation Methods 0.000 title claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000005684 electric field Effects 0.000 claims description 3
- 241000269350 Anura Species 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000036962 time dependent Effects 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/08—Sliding or levitation systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
- Linear Motors (AREA)
Abstract
Levitation Undercarriage With Servomotor Driven Air Gap Regulation For the Magley Train System (Magnetic Levitation Train system) Abstract The levitation undercarriage for a magnetic levitation train whose supporting and driving forces are generated by way of a long stator on the track and permanent magnets on the vehicle (magnetic levitation train system) is given such a configuration that, instead of a purely mechanical air gap regulation to regulate the load dissipation of the vehicle, this regulation is effected by means of electric or hydraulic servomotors.
Description
3 ~ 7 LEVITATION UNDERCARRIAGE
WIT~ SERVOMOTOR DRIVEN AIR GAP REGULATION
Specification The present invention relates to the air gap regulation for a levitation undercarriage of a track-~ound magnetic levitation train transportation system. In this system, the vehicles are driven by way of a long stator motor installed on the track. The traveling electric field in the windings of the long stator motor cooperates with the magnetic forces of the permanent magnets of the levitation undercarriages.
This cooperation takes place without contact. It must be ensured that this freedom from contact (air gap) is reliably guaranteed. At the same time, the magnetic forces acting over the steel track (here the sheet metal packets of the long stator) transfer the weight of the vehicle to the track as a load distributed over the entire surface area over the length of the magnet strips. This air gap must be set as a function of the load by an air gap regulating device, that is, with increasing load/increasing weight (loads added to the vehicle), the servomotors must reduce the air gap with ~ ~ ~ 2 3 ~3 r~/
the result that the magnetic attraction forces between the permanent magnets of the levitation undercarriage and the track rail carrying the integrated long stator become greater. Load dependent mechanical air gap regulators and electronically controlled support and guide systems are known. The mechanical air gap regulation has a complex configuration, is expensive and has a limited functionality, poor adjustability and a broad margin of error in its settings. An electronically regulated support and guide lo system is complex and economical only for high-speed applica-tions. It is the object of the present invention to provide a simply constructed, economical, easily adjusted air gap regulation which has a small margin of error in its settings.
This is accomplished by the characterizing features of claim l. Advantageous embodiments and/or modifications are defined in the dependent claims.
The invention will now be described in greater detail with reference to exemplary drawing figures.
Figure 1 is a sectional view of the levitation undercar-riage of a magnetic levitation train including the air gapregulation according to the invention in cooperation with the track of the magnetic levitation train.
~23~7 Figure 2 is a top view of the levitation undercarriage :~ of Figure 1.
The magnetic levitation train track is composed of a track carrier and the track profile. The track carrier is composed of a supporting profile 11 and a transverse connec-.: tor 12. The track profile includes a support rail 21, a lateral guide profile 22 and a long stator 23.
The levitation undercarriage includes a ~igid frame 31, a spindle drive 32, a servomotor 321, upper vertical rollers 10 33, lower vertical rollers 34, a lateral guide roller 35 and a magnet strip 36. The magnetic levitation train cabin, which is not shown, may be connected with rigid frame 31, for example by way of pneumatic bellows 45 and a slew~ng ring 44. The air gap is regulated according to the invention by ` 15 load dependent desired value inputs made by means of ser-vomotors 321. Servomotors 321 are attached on both sides of a rectangular undercarriage frame 31 in each case at the end of a longitudinal carrier. By means of an electronic control system and a spindle drive 32, they regulate the distance between magnet strips 36 of tne levitation undercarriage and long stator 23 according to predetermined permissible load values for the upper vertical rollers 33 (not adjustable in " :: :
.,, ~
,: ~ : : , .:: .
`:
.
WIT~ SERVOMOTOR DRIVEN AIR GAP REGULATION
Specification The present invention relates to the air gap regulation for a levitation undercarriage of a track-~ound magnetic levitation train transportation system. In this system, the vehicles are driven by way of a long stator motor installed on the track. The traveling electric field in the windings of the long stator motor cooperates with the magnetic forces of the permanent magnets of the levitation undercarriages.
This cooperation takes place without contact. It must be ensured that this freedom from contact (air gap) is reliably guaranteed. At the same time, the magnetic forces acting over the steel track (here the sheet metal packets of the long stator) transfer the weight of the vehicle to the track as a load distributed over the entire surface area over the length of the magnet strips. This air gap must be set as a function of the load by an air gap regulating device, that is, with increasing load/increasing weight (loads added to the vehicle), the servomotors must reduce the air gap with ~ ~ ~ 2 3 ~3 r~/
the result that the magnetic attraction forces between the permanent magnets of the levitation undercarriage and the track rail carrying the integrated long stator become greater. Load dependent mechanical air gap regulators and electronically controlled support and guide systems are known. The mechanical air gap regulation has a complex configuration, is expensive and has a limited functionality, poor adjustability and a broad margin of error in its settings. An electronically regulated support and guide lo system is complex and economical only for high-speed applica-tions. It is the object of the present invention to provide a simply constructed, economical, easily adjusted air gap regulation which has a small margin of error in its settings.
This is accomplished by the characterizing features of claim l. Advantageous embodiments and/or modifications are defined in the dependent claims.
The invention will now be described in greater detail with reference to exemplary drawing figures.
Figure 1 is a sectional view of the levitation undercar-riage of a magnetic levitation train including the air gapregulation according to the invention in cooperation with the track of the magnetic levitation train.
~23~7 Figure 2 is a top view of the levitation undercarriage :~ of Figure 1.
The magnetic levitation train track is composed of a track carrier and the track profile. The track carrier is composed of a supporting profile 11 and a transverse connec-.: tor 12. The track profile includes a support rail 21, a lateral guide profile 22 and a long stator 23.
The levitation undercarriage includes a ~igid frame 31, a spindle drive 32, a servomotor 321, upper vertical rollers 10 33, lower vertical rollers 34, a lateral guide roller 35 and a magnet strip 36. The magnetic levitation train cabin, which is not shown, may be connected with rigid frame 31, for example by way of pneumatic bellows 45 and a slew~ng ring 44. The air gap is regulated according to the invention by ` 15 load dependent desired value inputs made by means of ser-vomotors 321. Servomotors 321 are attached on both sides of a rectangular undercarriage frame 31 in each case at the end of a longitudinal carrier. By means of an electronic control system and a spindle drive 32, they regulate the distance between magnet strips 36 of tne levitation undercarriage and long stator 23 according to predetermined permissible load values for the upper vertical rollers 33 (not adjustable in " :: :
.,, ~
,: ~ : : , .:: .
`:
.
2~2387 PCT/EP90~01604 height) which are fixed to undercarriage 31. The load on upper vertical rollers 33 is measured by means of force measuring devices such as, for example, load cells. In this way, the adjustable transfer of the load of the vehicle weight to the track carrier ensures that vertical rollers 33 experience minimum stress. With the air gap regulation according to the invention, it is further possible to con-figure rigid frame 31 in such a way that a free space is created in its center region as shown in Figure l. Thus switch and crossover frogs of the magnetic levitation train track can be configured in such a manner that they project beyond the upper edge of the track profile and nevertheless can be easily traversed by the cars of the magnetic levita-tion train.
It is particularly advantageous to configure the spindle drive 32 in such a way that the distance between the long stator 23 and magnet strip 36 can be enlarged in such a way that the separation of the electrical field of long stator 23 and the magnetic field of the permanent magnets of magnet strip 36 interrupts the flow of forces and thus permits a reliable interruption of the drives, for example in the parking area of the transportation system or for other ~ ;" .' ,, , .
,:
: ::
~23~7 requirements. This is of great significance for reliable train operation and for the switching of trains. Thus it is possible to bring different cars into the same inverter region of the drive system with the result that, by being able to switch off the drives of individual vehicles, they can be parked in close proximity to one another and thus it is possible to considerably reduce the length of the parking tracks.
Another advantageous type of embodiment results in that ;; 10 the supporting arms of the magnet strips 36 are equipped with support points which are not shown; they are positioned above the upper running face of support rail 21 in such a manner that, at the maximum distance required for safe drive switch-off, the vehicle weight is supported by the upper support rail 21 resulting in a complete removal of the load from the upper vertical rollers 33. In this way it is avoided that the elastic running faces of these vertical rollers would be deformed when there is no movement for a longer period of time. This, in turn improves the running characteristics since flat portions are avoided. This support of the vehicle weight simultaneously acts as a holding brake and to safely park it. The above statements are only an exemplary ~23~
PCT/~:P90/01604 description. In the same sense it is also possible, for example, to connect magnet strip 36 with rigid frame 31 and to perform the air gap regulation by an adjustment in the ; height of upper vertical rollers 33.
. :
- .: , ~ .. :
It is particularly advantageous to configure the spindle drive 32 in such a way that the distance between the long stator 23 and magnet strip 36 can be enlarged in such a way that the separation of the electrical field of long stator 23 and the magnetic field of the permanent magnets of magnet strip 36 interrupts the flow of forces and thus permits a reliable interruption of the drives, for example in the parking area of the transportation system or for other ~ ;" .' ,, , .
,:
: ::
~23~7 requirements. This is of great significance for reliable train operation and for the switching of trains. Thus it is possible to bring different cars into the same inverter region of the drive system with the result that, by being able to switch off the drives of individual vehicles, they can be parked in close proximity to one another and thus it is possible to considerably reduce the length of the parking tracks.
Another advantageous type of embodiment results in that ;; 10 the supporting arms of the magnet strips 36 are equipped with support points which are not shown; they are positioned above the upper running face of support rail 21 in such a manner that, at the maximum distance required for safe drive switch-off, the vehicle weight is supported by the upper support rail 21 resulting in a complete removal of the load from the upper vertical rollers 33. In this way it is avoided that the elastic running faces of these vertical rollers would be deformed when there is no movement for a longer period of time. This, in turn improves the running characteristics since flat portions are avoided. This support of the vehicle weight simultaneously acts as a holding brake and to safely park it. The above statements are only an exemplary ~23~
PCT/~:P90/01604 description. In the same sense it is also possible, for example, to connect magnet strip 36 with rigid frame 31 and to perform the air gap regulation by an adjustment in the ; height of upper vertical rollers 33.
. :
- .: , ~ .. :
Claims (8)
1. Levitation undercarriage for a track-bound magnetic levitation train transportation system, the system including a linear motor integrated in the track and permanent magnets in the levitation undercarriage for supporting and driving vehicles, with a rigid frame serving as carrier for all required components, characterized in that on each side at the ends of the longitudinal carriers of the rigid frame there is provided an electrically or hydraulically operated servomotor drive for an adjustment in height of either the magnet strip and the permanent magnets fastened thereto or the guide and spacer rollers (vertical rollers), and the height adjustment is effected as a function of the load.
2. A levitation undercarriage according to claim 1, characterized in that the load on the upper guide rollers is measured by means of a force measuring device in order to obtain a measured value for regulation of the size of the air gap under different loads.
3. A levitation undercarriage according to claim 1 or 2, characterized in that the air gap size is regulated electronically to correspond to a given load value.
4. A levitation undercarriage according to one of the preceding claims, characterized in that temporary load peaks are regulated out by way of a weight and/or time dependent threshold regulation.
5. A levitation undercarriage according to one of the preceding claims, characterized in that the rigid frame is configured in such a way that a free space is created in the center region of the frame along its longitudinal axis, with said free space extending to beyond the upper edge of the track profile so as to enable travel over switch or crossover center frogs.
6. A levitation undercarriage according to one of the preceding claims, characterized in that the servomotors increase the distance between the long stator of the track and the magnet strip of the undercarriage in such a way that separation of the electrical field of the long stator from the magnetic field of the permanent magnets of the undercar-riage interrupts the flow of forces and thus reliably shuts off the drive.
7. A levitation undercarriage according to claim 6, characterized in that, due to the appropriate configuration the support arms of the magnet strips to include support points positioned above the upper running faces of the supporting rail, the vehicle weight is simultaneously sup-ported on the upper running face of the track rails at the maximum space required for reliable shut-off of the drive and thus the upper vertical rollers of the levitation undercar-riage are completely relieved of their load.
8. A levitation undercarriage according to claim 7, characterized in that, when the upper vertical rollers are completely relieved of their load, the support points of the magnet strip support arms act as a parking brake.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3931797.8 | 1989-09-23 | ||
| DE19893931797 DE3931797A1 (en) | 1989-09-23 | 1989-09-23 | FLOATING / CHASSIS WITH ACTUATOR-OPERATED AIR GAP CONTROL FOR THE M-RAIL SYSTEM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2042387A1 true CA2042387A1 (en) | 1991-03-24 |
Family
ID=6390043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2042387 Abandoned CA2042387A1 (en) | 1989-09-23 | 1990-09-21 | Levitation undercarriage with servomotor driven air gap regulation |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0445271B1 (en) |
| JP (1) | JPH04501950A (en) |
| CA (1) | CA2042387A1 (en) |
| DE (2) | DE3931797A1 (en) |
| DK (1) | DK0445271T3 (en) |
| ES (1) | ES2066227T3 (en) |
| WO (1) | WO1991004182A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160168A (en) * | 2017-06-28 | 2017-09-15 | 泰安市源通智能机械技术研究院 | Small-sized detachable moving numerical control drilling-milling hole machine tool |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5688778A (en) * | 1989-05-15 | 1997-11-18 | Institute Of Organic Chemistry And Biochemistry Of The Academy Of Sciences Of The Czech Republic | Nucleoside analogs |
| DE4206491C2 (en) * | 1992-03-02 | 1996-04-11 | Magnetbahn Gmbh | Measuring device and method for determining the wheel forces of magnetic railway vehicles |
| DE102008060569A1 (en) | 2008-12-04 | 2010-06-10 | Schaeffler Kg | Bearing arrangement with magnetic bearing portion and method for controlling one or the bearing assembly |
| CN109228884B (en) * | 2018-10-11 | 2020-05-05 | 湖南磁浮技术研究中心有限公司 | Magnetic suspension train and suspension frame thereof |
| CN111762206A (en) * | 2020-07-14 | 2020-10-13 | 九洲运通(北京)超导新技术产业发展有限公司 | Superconductive magnetic suspension built-in suspension type air rail traffic system |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2279597A1 (en) * | 1974-07-26 | 1976-02-20 | Heidelberg Goetz | METHOD AND DEVICE FOR MAGNETIC SUPPORT OF VEHICLES |
| DE2436106C2 (en) * | 1974-07-26 | 1986-10-23 | Heidelberg, Götz, Dipl.-Phys., 8130 Starnberg | Magnetic levitation vehicle with permanent magnets and regulated electromagnets |
| JPS51100515A (en) * | 1975-02-28 | 1976-09-04 | Tokyo Shibaura Electric Co | JODENDOJIKI FUJOSHA |
| DE2545336A1 (en) * | 1975-10-09 | 1977-04-21 | Siemens Ag | Lateral guidance control for magnetic induction hovertrain - has coils laterally displaced by steering servos driving through bevel gears |
| DE2813023A1 (en) * | 1977-03-18 | 1979-09-27 | Heidelberg Goetz | Stability control for magnetic induction train - with sprung wheels to control magnetic gap and vehicle position |
| DE2711994C3 (en) * | 1977-03-18 | 1980-05-14 | Goetz Dipl.-Phys. 8136 Percha Heidelberg | Vehicle that is held opposite a track with the aid of an attracting magnetic device and an additional force device |
| DE3107341C2 (en) * | 1981-02-26 | 1985-08-01 | Magnet-Bahn Gmbh, 8130 Starnberg | Magnetic levitation vehicle with a load carrier that is sprung against the supporting part |
| DE3134049A1 (en) * | 1981-08-28 | 1983-03-10 | Herbert Prof. Dr.-Ing. 3300 Braunschweig Weh | Magnet control with external actuators |
| JP2572016B2 (en) * | 1986-01-08 | 1997-01-16 | 東洋電機製造株式会社 | Speed and suction force control system for steel plate suspended conveyance |
| DE3637844A1 (en) * | 1986-11-06 | 1988-05-19 | Messerschmitt Boelkow Blohm | RAIL VEHICLE WITH TRACKED WHEELS |
| JPH01152905A (en) * | 1987-12-08 | 1989-06-15 | Mitsubishi Electric Corp | Magnetic levitation carrier |
-
1989
- 1989-09-23 DE DE19893931797 patent/DE3931797A1/en not_active Ceased
-
1990
- 1990-09-21 WO PCT/EP1990/001604 patent/WO1991004182A1/en active IP Right Grant
- 1990-09-21 DE DE59008141T patent/DE59008141D1/en not_active Expired - Fee Related
- 1990-09-21 ES ES90914524T patent/ES2066227T3/en not_active Expired - Lifetime
- 1990-09-21 EP EP90914524A patent/EP0445271B1/en not_active Expired - Lifetime
- 1990-09-21 DK DK90914524T patent/DK0445271T3/en active
- 1990-09-21 CA CA 2042387 patent/CA2042387A1/en not_active Abandoned
- 1990-09-21 JP JP2513595A patent/JPH04501950A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160168A (en) * | 2017-06-28 | 2017-09-15 | 泰安市源通智能机械技术研究院 | Small-sized detachable moving numerical control drilling-milling hole machine tool |
| CN107160168B (en) * | 2017-06-28 | 2023-11-28 | 翟泉来 | Small detachable movable numerical control drilling and milling machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0445271A1 (en) | 1991-09-11 |
| ES2066227T3 (en) | 1995-03-01 |
| WO1991004182A1 (en) | 1991-04-04 |
| JPH04501950A (en) | 1992-04-02 |
| DE59008141D1 (en) | 1995-02-09 |
| DK0445271T3 (en) | 1995-02-27 |
| EP0445271B1 (en) | 1994-12-28 |
| DE3931797A1 (en) | 1991-04-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |