CN111216563B - Medium-low speed maglev train and linear motor mounting structure thereof - Google Patents
Medium-low speed maglev train and linear motor mounting structure thereof Download PDFInfo
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- CN111216563B CN111216563B CN201911345080.3A CN201911345080A CN111216563B CN 111216563 B CN111216563 B CN 111216563B CN 201911345080 A CN201911345080 A CN 201911345080A CN 111216563 B CN111216563 B CN 111216563B
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- motor
- stator
- screw rod
- mounting structure
- low speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/04—Magnetic suspension or levitation for vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/025—Asynchronous motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Linear Motors (AREA)
Abstract
The invention relates to a linear motor mounting structure of a medium-low speed maglev train, which comprises a motor stator, a motor beam arranged on a supporting arm and a stator floating mounting assembly used for mounting the stator on the motor beam, wherein the stator floating mounting assembly comprises: the mounting hole is formed in the motor beam, and the axis of the mounting hole is parallel to the vertical direction; the sleeve is fixed in the mounting hole, and a step hole is formed in the sleeve; the cover has the screw rod of spring, and in the screw rod penetrated the sleeve by the top of mounting hole, spring one end supported with the step in step hole, and the other end supported with the end cap of screw rod or supported with the nut of installing at the screw rod top, and the screw rod can freely up-and-down motion in the mounting hole, and motor stator hoists in the lower extreme of screw rod. The linear motor mounting structure can automatically adjust the gap between the motor stator and the motor rotor according to different working conditions, so that the efficiency of the motor is improved, and the comprehensive energy consumption of the magnetic suspension train is reduced. The invention also discloses a medium and low speed maglev train.
Description
Technical Field
The invention relates to the technical field of design and manufacture of magnetic suspension trains, in particular to a medium-low speed magnetic suspension train and a linear motor mounting structure thereof.
Background
The speed of the magnetic suspension train can be divided into low speed, medium speed and high speed, the speed per hour of the low speed magnetic suspension train is below 125km, the speed per hour of the medium speed magnetic suspension train is about 250km, the speed per hour of the high speed magnetic suspension train is about 500km, and the speed per hour of the high speed magnetic suspension train is mainly used for long distance and high passenger flow rate high speed passenger traffic among cities.
The middle and low speed maglev train is driven by a short stator linear asynchronous motor, the short stator linear asynchronous motor is composed of a short stator and a rotor (aluminum reaction plate) on a track, when the train is in suspension operation, the suspension gap is 8 +/-4 mm, the gap between the polar surface of the stator and the polar surface of the rotor is 13 +/-4 mm, and the gap between the stator and the rotor is large, as shown in figure 1, the stator 04 of the linear motor in the existing maglev train is fixedly arranged on a motor beam 02 through a screw rod 03, the rotor 05 is positioned above an electromagnet 06, the motor beam 02 is arranged on a support arm 01, and the gap between the stator 04 and the rotor 05 cannot be adjusted according to the real-time operation working condition of the train, so that the efficiency of the linear motor is low, and the energy conservation and the acceleration of the.
Therefore, how to adjust the gap between the stator and the rotor adaptively according to the working condition to improve the efficiency of the linear motor is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In order to enable the gap between the stator and the rotor to be adaptively adjusted according to the working condition, thereby improving the efficiency of the linear motor and reducing the energy consumption of the maglev train, the first aspect of the invention provides a linear motor mounting structure of a medium-low speed maglev train, which comprises a motor stator, a motor rotor arranged on a maglev track, a motor beam arranged on a supporting arm, and a stator floating mounting assembly used for mounting the stator on the motor beam, wherein the stator floating mounting assembly comprises:
the mounting hole is formed in the motor beam, and the axis of the mounting hole is parallel to the vertical direction;
the sleeve is fixed in the mounting hole, a stepped hole formed by two sections of cylindrical holes with different diameters is formed in the sleeve, and the diameter of the cylindrical hole close to the bottom of the motor beam is smaller;
the cover has the screw rod of spring, the screw rod by telescopic top penetrates in the sleeve, spring one end with the step position in step hole offsets, the other end with the end cap of screw rod offsets or with install the nut at screw rod top offsets, just the screw rod is in can free up-and-down motion in the sleeve, motor stator hoist and mount in the lower extreme of screw rod.
Preferably, the stator floating installation component further comprises a limiting cylinder sleeved on the screw rod, one end of the limiting cylinder abuts against the step position of the step hole, and the other end of the limiting cylinder is used for limiting the pressing stroke of the screw rod.
Preferably, the limiting cylinder is sleeved outside the spring.
Preferably, the motor beam is a hollow beam.
Preferably, the step position in step hole still be provided with be used for with the lower extreme limiting plate that the lower extreme of spring offseted, still be provided with on the screw rod be used for with the upper end limiting plate that the upper end of spring offseted.
The second aspect of the present invention also provides a medium-low speed maglev train, wherein the linear motor mounting structure of the medium-low speed maglev train is the mounting structure of the linear motor disclosed in any one of the above.
Preferably, in the length direction of the train, the motor stator comprises a plurality of sections, and two ends of each section of the motor stator are respectively installed on the motor beam through one or more stator floating installation assemblies.
Preferably, two ends of each section of the motor stator are respectively installed on the motor beam through the two stator floating installation assemblies.
Preferably, the two stator floating assemblies located at the same end of the motor stator are symmetrical about a transverse midline of the motor beam.
According to the technical scheme, in the linear motor mounting structure of the medium-low speed maglev train disclosed by the invention, the stator is mounted on the motor beam through the stator floating mounting assembly, specifically, the stator floating mounting assembly comprises a mounting hole formed in the motor beam, a sleeve fixed in the mounting hole and a screw rod sleeved with a spring, wherein a step hole formed by two sections of cylindrical holes with different diameters is formed in the sleeve, the axis of the mounting hole is parallel to the vertical direction, the screw rod penetrates into the mounting hole from the top end of the sleeve, one end of the spring abuts against the step position of the step hole, the other end of the spring abuts against an end cap of the screw rod or a nut mounted at the top of the screw rod, the screw rod can move up and down freely in the sleeve, and the motor stator is hung at the lower end of the screw rod.
The mode realizes the elastic hoisting of the motor stator on the screw rod, under some working conditions, the vertical component force between the motor stator and the motor rotor is smaller or no vertical component force, at the moment, the spring is possibly not compressed or the compression amount is smaller, under other working conditions, the vertical component force between the motor stator and the motor rotor is larger, and in addition, the gravity of the motor stator can increase the compression amount of the spring, so that the gap between the motor stator and the motor rotor is reduced, the efficiency of the motor is further improved, and the comprehensive energy consumption of the magnetic suspension train is reduced.
Drawings
FIG. 1 is a schematic diagram of a prior art linear motor mounting structure;
fig. 2 is a schematic view of a linear motor mounting structure disclosed in an embodiment of the present invention;
fig. 3 is a schematic view illustrating an installation position structure of a linear motor according to another embodiment of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic sectional view taken along line B-B of FIG. 3;
fig. 6 is a schematic structural view of the stator floating mount assembly shown in fig. 4.
Wherein, 1 is the trailing arm, 2 is the motor roof beam, 3 is the screw rod, 4 is motor stator, 5 is electric motor rotor, 6 is the electro-magnet, 7 is the spring, 9 is the magnetic suspension track, 10 is the nut, 11 is check washer, 12 is the upper end limiting plate, 13 is spacing section of thick bamboo, 14 is the lower extreme limiting plate, 15 is the sleeve, and A is the stator installation component that floats.
Detailed Description
The core of the invention is to provide a linear motor mounting structure of a medium-low speed maglev train, so that the gap between a stator and a rotor can be adaptively adjusted according to the working condition, and the efficiency of the linear motor is improved.
The other core of the invention is to provide a medium and low speed magnetic suspension train adopting the linear motor mounting structure.
Referring to fig. 2, in an embodiment, the linear motor mounting structure of a medium-low speed maglev train disclosed by the present invention includes a motor stator 4, a motor rotor 5 and a motor beam 2, the motor beam 2 is fixedly mounted on a supporting arm 1, the motor stator 4 is disposed on the motor beam 2, the motor rotor 5 is mounted on a maglev track, in addition, the linear motor mounting structure further includes a stator floating mounting assembly a for mounting the motor stator 4 on the motor beam 2, the stator floating mounting assembly includes a mounting hole, a sleeve 15 and a screw rod 3 sleeved with a spring 7, the mounting hole is opened on the motor beam 2, an axis of the mounting hole is parallel to a vertical direction, the sleeve 15 is fixedly disposed in the mounting hole, a stepped hole formed by two sections of cylindrical holes with different diameters is disposed in the sleeve 15, and the diameter of the cylindrical hole near the bottom of the motor beam is smaller, as shown in fig. 2, the screw 3 sleeved with the spring 7 penetrates into the sleeve 15 from the top end of the sleeve 15, one end of the spring 7 abuts against the step position of the step hole, the other end abuts against the end cap of the screw 3 or the nut 10 installed at the top of the screw 3 according to the specific form of the screw 3, the screw 3 can freely move up and down in the installation hole, and the motor stator 4 is hung at the lower end of the screw 3.
The technical scheme disclosed in the embodiment realizes the elastic hoisting of the motor stator on the screw rod 3, under some working conditions, the vertical component force (suction force) between the motor stator 4 and the motor rotor 5 is smaller, at the moment, the spring 7 may not be compressed or the compression amount is smaller, and under other working conditions, the vertical component force between the motor stator 4 and the motor rotor 5 is larger, and in addition, the gravity of the motor stator 4 per se can increase the compression amount of the spring 7, so that the gap between the motor stator 4 and the motor rotor 5 is reduced, the efficiency of the motor is improved, and the comprehensive energy consumption of the magnetic suspension train is reduced.
In an embodiment, in practice, it is found that when a train is in a traction working condition and an electric braking working condition, the spring 7 can be compressed by 5mm through the vertical component force of the motor and the self weight of the motor stator 4, the gap between the stator and the rotor pole face is reduced to 8mm from 13mm, and the change rule of the gap and the motor efficiency is calculated.
In order to ensure that a necessary gap is maintained between the pole faces of the stator and the rotor and prevent the spring 7 from being excessively compressed, the embodiment further optimizes the above embodiment, in the linear motor mounting structure disclosed in the embodiment, the stator floating mounting assembly further comprises a limiting cylinder 13 sleeved on the screw rod 3, one end of the limiting cylinder 13 abuts against the step position of the step hole, and the other end of the limiting cylinder 13 abuts against an end cap at the top of the screw rod 3 or a nut 10 installed on the screw rod 3 to limit the downward pressing stroke of the screw rod 3.
Referring to fig. 3 to 6, in an embodiment, the motor beam 2 is a hollow beam, a top opening is formed at the top of the motor beam 2, a bottom opening corresponding to the top opening is formed at the bottom of the motor beam, and the mounting hole is formed in a cavity between the top opening and the bottom opening.
In order to further optimize the solution, so as to provide the installation stability and the working reliability of the spring 7, a lower end limit plate 14 for abutting against the lower end of the spring 7 is further provided at the step position of the stepped hole, and as shown in fig. 6, an upper end limit plate 12 for abutting against the upper end of the spring 7 is further provided on the screw rod 3.
If the upper end of the screw rod 3 is screwed by the nut 10, a check washer 11 is preferably disposed between the nut 10 and the upper end limit plate 12 to improve the installation stability of the entire stator floating installation assembly.
Therefore, the linear motor mounting structure disclosed by the invention adopts a matching form of the screw rod 3 and the spring 7, the improvement on the existing motor beam 2 is less, the structure is simple, the mounting, the overhauling, the replacement and the maintenance are convenient, and the production cost and the maintenance cost are lower.
The embodiment of the invention also discloses a medium-low speed maglev train, and the linear motor mounting structure of the medium-low speed maglev train is the linear motor mounting structure disclosed in any one of the embodiments.
Due to the adoption of the linear motor mounting structure, the medium-low speed maglev train has the advantages of energy conservation and consumption reduction brought by the linear motor mounting structure.
In the medium and low speed maglev train, in the length direction of the train, the motor stator 4 comprises a plurality of sections, two ends of each section of the motor stator 4 are respectively installed on the motor beam 2 through one or more stator floating installation assemblies a, as shown in fig. 3-5, two ends of the motor stator 4 shown in the drawings of the specification of the invention are respectively and fixedly connected to two ends of the motor beam 2, and each end is installed on the motor beam 2 through two stator floating installation assemblies a.
Referring to fig. 4 and 5, in order to ensure the installation stability of the motor stator 4 and the force uniformity of the motor beam 2, the two stator floating installation assemblies a located at the same end of the motor stator 4 in the present embodiment are symmetrical with respect to the transverse midline of the motor beam 2. In fig. 4, the vertical direction along the paper surface is the transverse direction of the motor beam 2, and the transverse bisector is a straight line passing through the midpoint of the motor beam 2 in the transverse direction and parallel to the axis of the motor beam 2.
The middle-low speed maglev train and the linear motor mounting structure thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a linear electric motor mounting structure of well low-speed maglev train, includes motor stator (4), sets up motor rotor (5) on the magnetic levitation track and sets up motor roof beam (2) on trailing arm (1), its characterized in that still including be used for with the stator is installed stator floating installation subassembly on motor roof beam (2), stator floating installation subassembly (A) includes:
the mounting hole is formed in the motor beam (2) and the axis of the mounting hole is parallel to the vertical direction;
the sleeve (15) is fixed in the mounting hole, a stepped hole formed by two sections of cylindrical holes with different diameters is formed in the sleeve (15), and the diameter of the cylindrical hole close to the bottom of the motor beam is smaller;
the cover has screw rod (3) of spring (7), screw rod (3) by the top of sleeve (15) penetrates in sleeve (15), spring (7) one end with the step position in step hole offsets, the other end with the end cap of screw rod (3) offsets or with install nut (10) at screw rod (3) top offset, just screw rod (3) are in can free up-and-down motion in sleeve (15), motor stator (4) hoist in the lower extreme of screw rod (3).
2. The linear motor mounting structure according to claim 1, wherein the stator floating mounting assembly (a) further comprises a limiting cylinder (13) sleeved on the screw (3), one end of the limiting cylinder (13) abuts against a step position of the stepped hole, and the other end of the limiting cylinder is used for limiting a pressing-down stroke of the screw (3).
3. The linear motor mounting structure according to claim 2, wherein the limiting cylinder (13) is sleeved outside the spring (7).
4. A linear motor mounting structure according to claim 1, characterized in that the motor beam (2) is a hollow beam.
5. The linear motor mounting structure according to claim 1, wherein a lower end limit plate (14) for abutting against a lower end of the spring (7) is further provided at a stepped position of the stepped hole, and an upper end limit plate (12) for abutting against an upper end of the spring (7) is further provided on the screw (3).
6. A medium-low speed maglev train, characterized in that the linear motor mounting structure of the medium-low speed maglev train is the linear motor mounting structure as claimed in any one of claims 1 to 5.
7. The medium and low speed maglev train according to claim 6, wherein the motor stator (4) comprises a plurality of segments in the length direction of the train, and both ends of each segment of the motor stator (4) are respectively mounted on the motor beam (2) through one or more stator floating mounting assemblies (A).
8. The medium and low speed maglev train according to claim 7, wherein both ends of each section of the motor stator (4) are respectively mounted on the motor beam (2) by two stator floating mounting assemblies (A).
9. Medium and low speed maglev train according to claim 8, characterized in that the two stator float assemblies located at the same end of the motor stator (4) are symmetrical with respect to the transverse midline of the motor beam (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911345080.3A CN111216563B (en) | 2019-12-24 | 2019-12-24 | Medium-low speed maglev train and linear motor mounting structure thereof |
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| CN201911345080.3A CN111216563B (en) | 2019-12-24 | 2019-12-24 | Medium-low speed maglev train and linear motor mounting structure thereof |
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| CN111216563A CN111216563A (en) | 2020-06-02 |
| CN111216563B true CN111216563B (en) | 2021-05-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113714113A (en) * | 2021-01-11 | 2021-11-30 | 北京京东乾石科技有限公司 | Monitoring device and system of secondary plate and cross belt sorting machine |
| CN113489281B (en) * | 2021-07-02 | 2022-11-08 | 北京京东乾石科技有限公司 | Linear motor system and crossed belt sorting equipment |
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| CN103895528A (en) * | 2014-03-25 | 2014-07-02 | 西南交通大学 | Medium and lower speed maglev train travelling mechanism |
| DE102013111268A1 (en) * | 2013-10-11 | 2015-04-16 | Max Bögl Stiftung & Co. Kg | Method for operating a vehicle of a magnetic levitation railway and a corresponding vehicle |
| CN205141965U (en) * | 2015-11-03 | 2016-04-06 | 西南交通大学 | Magnetic levitation vehicle driving motor stator winding multistage distribution structure is often led to well low -speed |
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| CN108736592A (en) * | 2018-08-10 | 2018-11-02 | 北京九州动脉隧道技术有限公司 | A kind of Linear motor device and magnetic suspension train |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108394310B (en) * | 2018-01-22 | 2023-08-29 | 同济大学 | Driving and protecting device for linear motor of medium-low speed maglev train |
| CN108657013A (en) * | 2018-04-04 | 2018-10-16 | 中国铁建重工集团有限公司 | Magnetic suspension linear electrical-coil regulating device and magnetic-levitation train on a kind of suspension rack |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070880A (en) * | 1992-10-31 | 1993-04-14 | 周木春 | Multiple row is organized into groups the hitch stress cutting traction method of heavily loaded car team |
| CN200942714Y (en) * | 2006-07-31 | 2007-09-05 | 南车四方机车车辆股份有限公司 | Pad type height adjusting mechanism |
| DE102013111268A1 (en) * | 2013-10-11 | 2015-04-16 | Max Bögl Stiftung & Co. Kg | Method for operating a vehicle of a magnetic levitation railway and a corresponding vehicle |
| CN103895528A (en) * | 2014-03-25 | 2014-07-02 | 西南交通大学 | Medium and lower speed maglev train travelling mechanism |
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