CN102936986B - Magnetic levitation type portal crane device - Google Patents
Magnetic levitation type portal crane device Download PDFInfo
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- CN102936986B CN102936986B CN201210245637.8A CN201210245637A CN102936986B CN 102936986 B CN102936986 B CN 102936986B CN 201210245637 A CN201210245637 A CN 201210245637A CN 102936986 B CN102936986 B CN 102936986B
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Abstract
The invention discloses a magnetic levitation type portal crane device which comprises a fixing support module fixedly connected with a vertical wall face, a movable module glidingly connected with the fixing support module and a movable door connected onto the lower side of the movable module. The fixing support module is provided with a horizontally-arranged downward first moving face, the movable module is provided with a second moving face oppositely arranged with the first moving face, a flat plate type linear motor stator is arranged on the first moving face along a moving direction of the movable door, guide rails are arranged on two sides of the flat plate type linear motor stator, a flat plate type linear motor rotor is arranged on the second moving face, a plurality of slide blocks are arranged on two sides of the flat plate type linear motor rotor, and the slide blocks can be slidingly hung on the guide rails. The magnetic levitation type portal crane device is simple in mechanism, high in starting speed and capable of offsetting load of the movable door, reduces abrasion, prolongs service life and is high in installation accuracy.
Description
Technical field
The present invention relates to door mechanism system, specifically relate to a kind of driving mechanism of door mechanism system.
Background technology
Existing door machine device generally adopts electric rotating machine to drive, and therefore, needs the rectilinear motion by transmission devices such as rack-and-pinion, leading screw, Timing Belt, chains, the rotation of motor being changed into door.Owing to there is mechanical wear and mechanical clearance in this indirect drive manner, and transmission device has larger inertia, therefore its motion precision and stationarity not high, toggle speed is slow, application life is short, need periodic maintenance or change transmission device, especially close on some Long Distances, heavy load door airport, the problems referred to above will be more outstanding.
Chinese patent literature discloses one " automatic door ", Authorization Notice No. is CN201605942U, comprises motor, guide rail, door leaf, suspension bracket and is arranged on suspension bracket along the roller that guide rail rolls.The upper end of described door leaf is connected with suspension bracket.It also comprises reducing gear and belt gear, and described reducing gear is connected with motor, and described reducing gear is arranged in guide rail, and described belt gear is connected with reducing gear, and described belt gear is arranged in guide rail.Described suspension bracket is connected with belt gear.The cost of production of this automatic door is relatively low, has both been applicable to the occasion of installing Yishanmen fan, and be applicable to again the occasion that door leaf is fanned in installation two, the scope of application is wider.Because its motor is the movement being driven automatic door by belt gear, therefore still there is the problem that toggle speed is slow, wearing and tearing are large, application life is short.
Summary of the invention
The present invention is the problem that the toggle speed existing for the door machine device in order to solve prior art is slow, mechanical wear is large, application life is short, provides that a kind of toggle speed is fast, wear and tear door machine device that is little, long service life.
To achieve these goals, the present invention is by the following technical solutions: a kind of magnetic levitation type portal crane device, comprise the fixed support module be fixedly connected with vertical metope, the mobile module be slidably connected with fixed support module, and the moving door be connected on the downside of mobile module, described fixed support module has first all-moving surface be horizontally disposed with down, described mobile module has the second all-moving surface that and the first all-moving surface are arranged in opposite directions, first all-moving surface is provided with flat-plat type linear motor stator along the moving direction of moving door, and be provided with guide rail in the both sides of flat-plat type linear motor stator, second all-moving surface is provided with flat-plat type linear motor mover, and be provided with some slide blocks in the both sides of flat-plat type linear motor mover, described slide block hangs on guide rail slidably.
Door machine device of the present invention is mainly applicable to Long Distances, heavy load door airport is closed, the weight of moving door can reach more than one ton, owing to adopting flat-plat type linear motor Direct driver moving door, not only eliminate middle transmission device, be conducive to reducing wear, and can toggle speed be improved, increase the service life, especially, a Normal Force can be produced between flat-plat type linear motor stator and flat linear motor rotor, in the prior art, this Normal Force of dull and stereotyped linear electric motors is considered to harmful, people are normally by adopting double-flanged end structure, namely arrange respectively secondary both sides one elementary to balance Normal Force, the Normal Force between flat-plat type linear motor stator and flat linear motor rotor is make use of dexterously in the present invention, by adjusting the air gap between suitable flat-plat type linear motor stator and flat linear motor rotor, Normal Force is equaled substantially or slightly larger than the load of mobile module, like this, Normal Force is utilized to go the load of balanced sequence module, realize a kind of approximate maglev state, thus the interaction force between the guide rail of the slide rail of mobile module and fixed support module is reduced greatly, and then the frictional resistance that can reduce significantly between the two, reduce the wearing and tearing caused because of frictional force, increase the service life.
As preferably, described fixed support module comprises the installation wallboard be fixedly connected with metope vertically, the some junction plates being positioned at substrate, connection substrate and the installation wallboard of installing wallboard lower edge level, the soffit of described substrate is the first all-moving surface, substrate is spliced to form by the moving direction of some base board units along moving door, junction plate has two orthogonal fillets, junction plate respectively perpendicular to installation wallboard and substrate, two fillets respectively with the upper surface of substrate with wallboard external surface be installed be fixedly connected with.
The installed surface of dull and stereotyped linear electric motors has original vertical metope to be converted to horizontal plane by junction plate by the present invention, thus is conducive to the load offsetting mobile module with the Normal Force of dull and stereotyped linear electric motors.Particularly, in Long Distances situation, be difficult to reach a higher precision owing to installing the surface finish of metope, thus make the installation of dull and stereotyped linear electric motors very difficult, and the air gap between flat-plat type linear motor mover and flat-plat type linear motor stator is difficult to adjust and fix, and substrate is fixed to installation metope by several junction plates, the out-of-flatness of metope can be eliminated to greatest extent on the impact of dull and stereotyped linear electric motors installation accuracy, by the fine setting to each junction plate, substrate is made to have enough planeness, and then guarantee that the air gap between flat-plat type linear motor mover and flat-plat type linear motor stator can meet designing requirement.Because substrate is spliced to form by some base board units, be both conducive to the adjustment to planeness etc., be conducive to again substrate and realize modularized production, thus simplified design, manufacture and maintenance.
As preferably, described fillet is provided with T-shaped slide rail, upper surface and the installation wallboard external surface of described substrate are provided with the T-shaped chute be slidably connected with T-shaped slide rail accordingly, the both sides of T-shaped chute are threaded for the tight fixed bolt of fastening T-shaped slide rail, the outer ledge place that described T-shaped chute is installing wallboard top edge and substrate is open-minded, and screens groove is provided with at the place of opening, the outside of screens groove is provided with limiting plate, limiting plate is provided with bolt hole, T-shaped slide rail is provided with screw on the end face near limiting plate, adjusting bolt is threaded with screw through bolt hole, the screw rod of adjusting bolt is provided with screens dish at corresponding screens groove place.
Junction plate and wallboard is installed, between substrate by T-shaped slide rail, the removable connection of T-shaped chute, be thus conducive to the planeness and the levelness that adjust substrate.And the screens dish of adjusting bolt by screens in screens groove, when rotating adjusting bolt, junction plate can be driven to do oscilaltion, to finely tune its height, or driving substrate to do the movement of horizontal direction, and then the glacing flatness of adjustment substrate.
As preferably, the outer ledge of each base board unit is provided with at least one vertical transparent pipe, and transparent pipe two ends are open-minded, and the lower ending opening of each transparent pipe is connected house steward respectively and is communicated with one, base board unit upper surface is provided with altitude datum boss near transparent pipe place.Because each transparent pipe is connected by connecting house steward, therefore, as long as inject liquid inside, liquid level on each transparent pipe is contour, thus can be used as the basis of reference of Height Adjustment, altitude datum boss is then the elevation carrection benchmark of base board unit, by the comparison to basis of reference and elevation carrection benchmark, and can conveniently to the adjustment of base board unit height.
As preferably, described base board unit is also being provided with signal lamp near transparent pipe place, benchmark boss is fixed with the first conducting treadle bar, one end of first conducting treadle bar is bent to form test side, test side is positioned at the opening of transparent pipe upper end, and the other end of the first conducting treadle bar is connected with signal lamp by wire; Described connection house steward is provided with a capping, and capping is provided with the second conducting treadle bar, and one end of the second conducting treadle bar deeply connects in house steward, and the other end is connected with the signal lamp on each base board unit after connecting valve, battery successively.
In order to adjust the height of base board unit more accurately, what each transparent pipe was corresponding arranges a signal lamp, with the liquid be connected in house steward, there is electric conductivity owing to injecting transparent pipe, thus when the liquid level in transparent pipe contacts with the test side of the first conducting treadle bar, first conducting treadle bar, liquid, second conducting treadle bar, battery, switch and signal lamp just form a loop, signal lamp is lighted, in transparent pipe, progressively liquid is injected by measuring container, until all signal lamps are lighted, as long as measure the amount of liquid injected between first signal lamp lighted and the signal lamp that last is lighted, the difference in height between peak and minimum point can be conversed, to confirm whether it meets designing requirement.
As preferably, the cross section of described guide rail is rectangle, along guide rail, longitudinally semicircle groove is set in the middle of two sides, and the corner up and down of guide rail side between semicircle groove and guide rail soffit is provided with knuckle, thus the cross section of guide rail is made to be similar Pear-Shaped structure, like this, guide rail can carry out the spacing of upper and lower both direction to slide block, especially, the stress of guide rail can be improved significantly, avoid occurring that stress is concentrated.
As preferably, be provided with leg-of-mutton reinforcing rib between mobile module and moving door, reinforcing rib is threaded with mobile module and moving door respectively, thus the convenient adjustment to moving door.
Therefore, the present invention has following beneficial effect: mechanism is simple, and toggle speed is fast, the load that can offset moving door, and reduce wearing and tearing, increase the service life, installation accuracy is high.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the cross sectional representation at T-shaped slide rail and T-shaped chute place in the present invention.
Fig. 3 is that A in Fig. 1 is to partial schematic diagram.
Fig. 4 is that B in Fig. 1 is to partial schematic diagram.
In figure: 1, fixed support module 11, wallboard 12 is installed, substrate 13, junction plate 14, first all-moving surface 15, fillet 16, T-shaped slide rail 17, T-shaped chute 18, tight fixed bolt 19, screens groove 2, mobile module 20, limiting plate 21, second all-moving surface 22, screens dish 23, altitude datum boss 24, adjusting bolt 3, moving door 4, flat-plat type linear motor stator 5, flat-plat type linear motor mover 6, the semicircle groove 7 of guide rail 61, slide block 81, transparent pipe 82, connect house steward 84, first conducting treadle bar 85, test side 86, fixed end 87, capping 88, second conducting treadle bar.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention will be further described.
In embodiment as shown in Figure 1, a kind of magnetic levitation type portal crane device, be particularly useful for the occasion of Long travel, high capacity, the moving door 3 comprising the fixed support module 1 be fixedly connected with vertical metope, the mobile module 2 be slidably connected with fixed support module and be connected on the downside of mobile module.Fixed support module comprises the some junction plates 13 installing wallboard 11, substrate 12 and connection substrate and installation wallboard, installs wallboard and vertically arranges, and be fixedly connected with metope.Be connected to substrate level and wallboard lower limb is installed, make to form L shape between substrate with installation wallboard to be connected, substrate is spliced to form by the moving direction of some base board units along moving door, thus is conducive to substrate and realizes modularized production, and simplified design, manufacture and maintenance.The soffit of substrate is that the moving direction along moving door on the first all-moving surface 14, first all-moving surface is provided with flat-plat type linear motor stator 4, and arranges guide rail 6 in the both sides of flat-plat type linear motor stator.Analogously, mobile module is spliced to form by some mobile flat units horizontal along the moving direction of moving door, upper surface relative with the first all-moving surface on mobile module is the second all-moving surface 21, second all-moving surface is provided with flat-plat type linear motor mover 5, and being provided with some slide blocks 7 in the both sides of flat-plat type linear motor mover, slide block hangs on guide rail slidably.For ease of realizing modularized production, flat-plat type linear motor stator and flat-plat type linear motor mover can be made into some stator units and subunit, and each base board unit both sides can arrange the quantity of slide block for one to two along the moving direction of moving door, thus each base board unit can be adjusted independently.
In order to improve the bonding strength installed between wallboard and substrate, and be convenient to the adjustment of substrate, junction plate makes right triangular shape, thus there are two orthogonal fillets 15, junction plate respectively perpendicular to installation wallboard and substrate, two fillets respectively with the upper surface of substrate with wallboard external surface be installed be fixedly connected with.In addition, as shown in Figure 2 and Figure 3, fillet is provided with T-shaped slide rail 16 integratedly, correspondingly, substrate upper surface and the T-shaped chute 17 wallboard external surface being arranged and is slidably connected with T-shaped slide rail is installed, thus junction plate can oscilaltion, substrate can be moved horizontally.The both sides of T-shaped chute have then been threaded tight fixed bolt 18, and the afterbody of tight fixed bolt bears against on the transverse part of T-shaped slide rail both sides, thus by fastening for T-shaped slide rail, make junction plate respectively with substrate with wallboard be installed be fixedly connected with.Further, corresponding with the magnitude setting of slide block, each base board unit can arrange the quantity of junction plate for one to two along the moving direction of moving door, thus is convenient to the independence adjustment of each base board unit.
Further, the outer ledge place that T-shaped chute is installing wallboard top edge and substrate is open-minded, and the screens groove 19 through with end face is set on the end face opening place, the arranged outside limiting plate 20 of screens groove, screens groove is closed, thus facilitate the processing of screens groove, limiting plate is provided with bolt hole, correspondingly, T-shaped slide rail arranges screw on the end face near limiting plate, adjusting bolt 24 is threaded with screw through bolt hole, and the screw rod of adjusting bolt is provided with screens dish 22 at corresponding screens groove place, thus can limit moving axially of adjusting bolt.When rotating adjusting bolt, T-shaped slide rail relative adjustment bolt moves, because adjusting bolt is limited in the axial direction, therefore, junction plate can be driven to do oscilaltion along the T-shaped chute installed on wallboard by forward and reverse rotation adjusting bolt, to finely tune its height, or substrate is driven to do the movement of horizontal direction, and then the glacing flatness of adjustment substrate.
Track cross-section of the present invention is rectangle, and in the middle of two sides, along guide rail, longitudinally semicircle groove 61 is set, the corner up and down of the guide rail side between semicircle groove and guide rail soffit then arranges knuckle, thus make the cross section of guide rail be similar Pear-Shaped structure, like this, slide block is suspended on guide rail slidably, and guide rail can carry out the spacing of upper and lower both direction to slide block, especially, root can be avoided to occur that stress is concentrated, and then improve intensity and the application life of guide rail.
As shown in Figure 4, for ease of the adjustment to each base board unit, the outer ledge of each base board unit is provided with at least one vertical transparent pipe 81, its preferred value is two, can be separately positioned on two of base board unit, transparent pipe two ends are open-minded, and the lower ending opening of each transparent pipe is connected house steward 82 respectively and is communicated with one, base board unit upper surface is provided with altitude datum boss 23 accordingly near transparent pipe place, and the upper surface of altitude datum boss is datum.This altitude datum boss needs to reach certain precision during fabrication, to make it can be used as the elevation carrection benchmark of adjustment base board unit height, during adjustment, liquid is injected in transparent pipe, liquid is preferably red or blue, to facilitate observation, along with liquid progressively injects, the liquid level in transparent pipe raises gradually.When the liquid level of one of them transparent pipe and the datum of altitude datum boss contour time, measure the distance between liquid level in all the other transparent pipes and the datum of corresponding height benchmark boss, the difference in height between each base board unit can be known.
Certainty of measurement is improved in order to enter one, also on each base board unit, a signal lamp (not shown) can be set near transparent pipe place, altitude datum boss is fixedly installed the first conducting treadle bar 84, one end of first conducting treadle bar is bent to form test side 85, test side is positioned at the opening of transparent pipe upper end, to contact with the liquid level in transparent pipe, the other end of the first conducting treadle bar is fixed end 86, it is fixed on altitude datum boss, and is connected with the positive pole of signal lamp by wire.Meanwhile, connect on house steward and a capping 87 be set, capping be connected house steward thread seal can be adopted to connect.One end that capping is provided with the second conducting treadle bar 88, second conducting treadle bar deeply connects in house steward, thus contacts with the liquid be connected in house steward, and the other end is connected with the signal lamp negative pole on each base board unit after connecting valve, battery successively.Utilize the electric conductivity injected transparent pipe and have with the liquid be connected in house steward, when the liquid level in transparent pipe contacts with the test side of the first conducting treadle bar, first conducting treadle bar, liquid, the second conducting treadle bar, switch, battery and signal lamp just form a loop, signal lamp is lighted, thus the sensor that formation one is simple and easy and highly sensitive.Further, in order to ensure the high unity of the test side of the first conducting treadle bar on each base board unit, altitude datum boss can arrange a vertical marker post, this vertical marker post is provided with height gauge, the fixed end of the first conducting treadle bar is set on vertical marker post slidably, and fixed by holding screw, thus form the structure of a similar vernier height gauge, to realize the accurate correction of test side height.
Finally, between mobile module and moving door, be provided with leg-of-mutton reinforcing rib (not shown), reinforcing rib is threaded with mobile module and moving door respectively, thus the convenient adjustment to moving door.
Door machine device of the present invention is mainly applicable to Long Distances, heavy load door airport is closed, the weight of moving door can reach more than one ton, owing to adopting flat-plat type linear motor Direct driver moving door, not only eliminate middle transmission device, be conducive to reducing wear, and can toggle speed be improved, increase the service life.First, according to the difference in height of each base board unit, adjust its height to make it meet designing requirement, when needing the height adjusting base board unit, first can unclamp tight fixed bolt, then adjusting bolt is correspondingly rotated with elevation base plate unit, when each base board unit height is consistent, tighten tight fixed bolt, junction plate is fixed, in addition, by the air gap between adjustment flat-plat type linear motor mover and flat linear motor stator electric, Normal Force is between the two equaled substantially or slightly larger than the load of mobile module, like this, Normal Force is utilized to go the load of balanced sequence module, that whole mobile module is in a kind of approximate maglev state, thus the interaction force between the guide rail of the slide rail of mobile module and fixed support module is reduced greatly, and then the frictional resistance that can reduce significantly between the two, reduce the wearing and tearing caused because of frictional force, increase the service life.
Claims (6)
1. a magnetic levitation type portal crane device, comprise the fixed support module (1) be fixedly connected with vertical metope, the mobile module (2) be slidably connected with fixed support module, and the moving door (3) be connected on the downside of mobile module, it is characterized in that, described fixed support module has first all-moving surface (14) be horizontally disposed with down, described mobile module has the second all-moving surface (21) that and the first all-moving surface are arranged in opposite directions, first all-moving surface is provided with the flat-plat type linear motor stator (4) be made up of some stator units along the moving direction of moving door, and be provided with guide rail (6) in the both sides of flat-plat type linear motor stator, second all-moving surface is provided with the flat-plat type linear motor mover (5) be made up of some subunit, and be provided with some slide blocks (7) in the both sides of flat-plat type linear motor mover, described slide block hangs on guide rail slidably, described fixed support module comprises the installation wallboard (11) be fixedly connected with metope vertically, be positioned at the substrate (12) installing wallboard lower edge level, some junction plates (13) of connection substrate and installation wallboard, the soffit of described substrate is the first all-moving surface, substrate is spliced to form by the moving direction of some base board units along moving door, junction plate has two orthogonal fillets (15), junction plate is respectively perpendicular to installation wallboard and substrate, two fillets respectively with the upper surface of substrate with wallboard external surface be installed be fixedly connected with.
2. a kind of magnetic levitation type portal crane device according to claim 1, it is characterized in that, described fillet is provided with T-shaped slide rail (16), upper surface and the installation wallboard external surface of described substrate are provided with the T-shaped chute (17) be slidably connected with T-shaped slide rail accordingly, the both sides of T-shaped chute are threaded for the tight fixed bolt (18) of fastening T-shaped slide rail, the outer ledge place that described T-shaped chute is installing wallboard top edge and substrate is open-minded, and screens groove (19) is provided with at the place of opening, the outside of screens groove is provided with limiting plate (20), limiting plate is provided with bolt hole, T-shaped slide rail is provided with screw on the end face near limiting plate, adjusting bolt (24) is threaded with screw through bolt hole, the screw rod of adjusting bolt is provided with screens dish (22) at corresponding screens groove place.
3. a kind of magnetic levitation type portal crane device according to claim 1 and 2, it is characterized in that, the outer ledge of each base board unit is provided with at least one vertical transparent pipe (81), transparent pipe two ends are open-minded, the lower ending opening of each transparent pipe is connected house steward (82) respectively and is communicated with one, base board unit upper surface is provided with altitude datum boss (23) near transparent pipe place.
4. a kind of magnetic levitation type portal crane device according to claim 3, it is characterized in that, described base board unit is also being provided with signal lamp near transparent pipe place, benchmark boss is fixed with the first conducting treadle bar (84), one end of first conducting treadle bar is bent to form test side (85), test side is positioned at the opening of transparent pipe upper end, and the other end of the first conducting treadle bar is connected with signal lamp by wire; Described connection house steward is provided with a capping (87), and capping is provided with the second conducting treadle bar (88), and one end of the second conducting treadle bar deeply connects in house steward, and the other end is connected with the signal lamp on each base board unit after connecting valve, battery successively.
5. a kind of magnetic levitation type portal crane device according to claim 1 and 2, it is characterized in that, the cross section of described guide rail is rectangle, along guide rail, longitudinally semicircle groove (61) is set in the middle of two sides, and the corner up and down of guide rail side between semicircle groove and guide rail soffit is provided with knuckle.
6. a kind of magnetic levitation type portal crane device according to claim 1 and 2, is characterized in that, is provided with leg-of-mutton reinforcing rib between mobile module and moving door, and reinforcing rib is threaded with mobile module and moving door respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210245637.8A CN102936986B (en) | 2012-07-17 | 2012-07-17 | Magnetic levitation type portal crane device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210245637.8A CN102936986B (en) | 2012-07-17 | 2012-07-17 | Magnetic levitation type portal crane device |
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| CN102936986A CN102936986A (en) | 2013-02-20 |
| CN102936986B true CN102936986B (en) | 2015-05-20 |
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Families Citing this family (7)
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|---|---|---|---|---|
| CN103850568B (en) * | 2014-03-20 | 2016-06-15 | 东南大学 | Electric translation door drive based on line inductance electromotor |
| CN103997185B (en) * | 2014-05-13 | 2017-02-15 | 东南大学 | Bi-directional synchronous movement linear motor |
| CN105041095B (en) * | 2015-03-10 | 2017-03-15 | 中北大学 | Magnetic suspension self-powered vertical hinged automatic door |
| CN105649455A (en) * | 2016-03-23 | 2016-06-08 | 中国科学院宁波材料技术与工程研究所 | Magnetic levitation type portal crane device |
| CN109090972A (en) * | 2018-09-21 | 2018-12-28 | 浙江宏博新型建材有限公司 | A kind of household wall pendant |
| CN110153877B (en) * | 2019-04-12 | 2024-09-24 | 江苏德速智能机械股份有限公司 | Guide rail of precision grinding machine |
| CN111431372A (en) * | 2020-04-28 | 2020-07-17 | 歌尔股份有限公司 | Linear motor |
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| WO1994013055A1 (en) * | 1992-11-26 | 1994-06-09 | Stator B.V. | Stator-element for a linear-electrical-drive, door provided with a stator-element as such |
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| CN1692207A (en) * | 2002-12-09 | 2005-11-02 | 多玛两合有限公司 | Stabilishing mechanism for a guide carriage, in particular for a sliding door or similar that can be displaced by a linear drive |
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| CN202788404U (en) * | 2012-07-17 | 2013-03-13 | 中国科学院宁波材料技术与工程研究所 | Magnetically levitated portal crane device |
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| WO1994013055A1 (en) * | 1992-11-26 | 1994-06-09 | Stator B.V. | Stator-element for a linear-electrical-drive, door provided with a stator-element as such |
| CN1692207A (en) * | 2002-12-09 | 2005-11-02 | 多玛两合有限公司 | Stabilishing mechanism for a guide carriage, in particular for a sliding door or similar that can be displaced by a linear drive |
| CN1641180A (en) * | 2005-01-04 | 2005-07-20 | 沈永年 | Low-loss silencing auto-door driving mechanism |
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Application publication date: 20130220 Assignee: Ningbo Yongci Technology Co.,Ltd. Assignor: NINGBO INSTITUTE OF MATERIALS TECHNOLOGY & ENGINEERING, CHINESE ACADEMY OF SCIENCES Contract record no.: X2021330000211 Denomination of invention: A magnetic levitation gantry crane device Granted publication date: 20150520 License type: Exclusive License Record date: 20210901 |
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