CN112277975A - Suspension type train driven by bilateral linear motor - Google Patents
Suspension type train driven by bilateral linear motor Download PDFInfo
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- CN112277975A CN112277975A CN202011214612.2A CN202011214612A CN112277975A CN 112277975 A CN112277975 A CN 112277975A CN 202011214612 A CN202011214612 A CN 202011214612A CN 112277975 A CN112277975 A CN 112277975A
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- bogie
- linear motor
- carriage body
- train
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
- B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
- B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
The invention discloses a suspension type train driven by a bilateral linear motor, which comprises a carriage body, a first bogie and a second bogie, wherein the first bogie and the second bogie are sleeved in the carriage body; the first bogie is connected to one end of the connecting flat plate through a first rotating shaft, and the second bogie is connected to the other end of the connecting flat plate through a second rotating shaft; linear motor secondary aluminum plates are respectively arranged on the left inner side and the right inner side of the carriage body, and linear motor primary aluminum plates are respectively arranged on the left outer side and the right outer side of the first bogie and the second bogie; wheel shafts are respectively arranged below the front part and the rear part of the first bogie and the second bogie, wheels are respectively sleeved at two ends of the wheel shafts, and the wheels are positioned on the track surface on the lower side of the carriage body; the lower parts of the first bogie and the second bogie respectively suspend the vehicle body through connecting rods. The invention can effectively reduce the complexity of the system structure, simplify the space and simultaneously improve the driving performance of the suspension train; the energy consumption of the system can be effectively reduced, and the service life of the rubber wheel of the suspension type train is prolonged.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a suspension type train driven by a bilateral linear motor.
Background
Urban rail transit belongs to public transport, and the development direction of present urban traffic is three-dimensional traffic, and suspension type train's advantage lies in its area of occupation is little, and moves in the air, and the very little ground traffic resource that occupies. A suspension train is an urban rail transit system with vehicles suspended below a rail beam, and Germany is the systemOrigin of originThe area of the country has wide development prospect in Japan due to the territorial area of Japan and other reasons, and the suspension train is less applied to the urban rail transit system in China at present. With the development of rail transit in China becoming faster and faster, the development of main railway traffic tends to be perfect, but the development in the aspect of urban rails needs to be perfect continuously. The suspension type train is a good development direction, has already planned and constructed projects in cities such as Sichuan Chengdu and Tianjin coastal new areas, and is favored by more and more cities.
However, the suspension type monorail transit system is a new type of domestic rail transit system, and has disadvantages in many aspects. The mode that the suspension type train adopted the rubber tyer to march, and the whole car weight of suspension type train is pressed on the track, and the mode of marcing of suspension type train still is through the frictional force effect, and through the frictional force definition of generalized, the relation of normal pressure and frictional force is directly proportional relation, so there is the serious problem of rubber tyer wearing and tearing in the actual operation in-process in the suspension type train, and then leads to the operation maintenance cost of this system to improve. In the aspect of operation, a traditional alternating current transmission mode is adopted, a system formed by the mode is complex, and due to the fact that the requirement on the adhesion degree of the rubber wheels is high, traction power is necessarily reduced after friction force is reduced in some ways, and the development of a suspension type train is limited.
Disclosure of Invention
The invention aims to provide a suspension type train driven by a bilateral linear motor.
The technical scheme for realizing the purpose of the invention is as follows:
a suspension type train driven by a bilateral linear motor comprises a carriage body, a first bogie and a second bogie, wherein the first bogie and the second bogie are sleeved in the carriage body; the first bogie is connected to one end of the connecting flat plate through a first rotating shaft, and the second bogie is connected to the other end of the connecting flat plate through a second rotating shaft; linear motor secondary aluminum plates are respectively arranged on the left inner side and the right inner side of the carriage body, and linear motor primary aluminum plates are respectively arranged on the left outer side and the right outer side of the first bogie and the second bogie; wheel shafts are respectively arranged below the front part and the rear part of the first bogie and the second bogie, wheels are respectively sleeved at two ends of the wheel shafts, and the wheels are positioned on the track surface on the lower side of the carriage body; the lower parts of the first bogie and the second bogie respectively suspend the vehicle body through connecting rods.
The other technical scheme is that the left and right outer sides of the first bogie and the second bogie are respectively provided with a linear motor primary, and the two are replaced by: the left and right outer sides of the connecting flat plate are respectively provided with a linear motor primary.
Further, the carriage body is made of ferromagnetic materials; and weight-reducing electromagnets are respectively arranged above the first bogie and the second bogie.
The invention has the beneficial effects that:
the arrangement of the connecting flat plate can increase the flexibility of the train passing through complex road conditions such as curves and the like, and meanwhile, the linear motor with a rigid structure is convenient to install. The linear motors connected with the two sides of the flat plate can adopt different control strategies, and the steering is realized by using the normal force difference under the condition of not sacrificing the driving force. The structure can effectively reduce the complexity of the system structure, simplify the space and improve the driving performance of the suspension train.
The weight-reducing electromagnet can provide an adjustable suspension force. The weight-reducing electromagnet controller can adjust the current change of the weight-reducing electromagnet according to the air gap and speed signals acquired by the air gap sensor and the speed sensor, so that the weight-reducing force of the weight-reducing electromagnet is changed. In the starting stage of the train, the acceleration with larger friction force between the rubber wheel and the rail is needed, and at the moment, the electromagnet only needs to provide smaller gravity reduction force; in the constant speed stage of the train, the force of the weight-reducing electromagnet is maintained to reach a rated air gap, and the rubber wheel is not contacted with the track; and in the deceleration stage of the train, the current of the weight-reducing electromagnet is reduced to achieve the braking effect. The structure can effectively reduce the energy consumption of the system and prolong the service life of the rubber wheel of the suspension type train.
Drawings
Fig. 1 is a front view of the overall structure of the system.
Fig. 2 is a side sectional view of the overall structure of the system.
Fig. 3 is a schematic view of a single-sided linear motor.
Figure 4 is a schematic view of a weight reducing electromagnet.
Fig. 5 is a schematic view of a connection plate.
Labeled as: the railway carriage or compartment body comprises a carriage or compartment body 1, a bogie 2, a track surface 3, a carriage body 4, a connecting rod 5, a rubber wheel 6, a connecting plate 7 and a connecting plate shaft 8. The weight-reducing electromagnet comprises a weight-reducing electromagnet 100, a weight-reducing electromagnet controller 101, a linear motor primary 200, a linear motor secondary pole 201, a linear motor controller 202, a speed sensor 300, a linear motor primary iron core 400, a linear motor primary coil 401, a weight-reducing electromagnet magnetic pole 501, a weight-reducing electromagnet coil 500 and an electromagnet air gap sensor 301.
Detailed Description
The traditional suspension train adopts an alternating current transmission mode and a rubber wheel traveling mode, and the mode has two defects. First, the tire advances by rubbing against the rail, and the friction of the rubber wheel is severe. Secondly, the conventional rotating electrical machine needs to be changed into a linear motion through a mechanical structure. Through improving the structure, through bilateral linear electric motor drive and the mode that the electro-magnet subtracts heavy, not only reduce the friction of rubber tyer but also simplified transmission system.
FIG. 1 is an elevational, cross-sectional view of the system of the present invention, and FIG. 2 is a side, cross-sectional view of the system of the present invention. The electromagnetic weight reduction system comprises a weight reduction electromagnet 100, a weight reduction electromagnet controller 101 and an electromagnet air gap sensor 301. The weight-reducing electromagnet 100 is positioned at the lower end of the top of the carriage body 1, the top end of the carriage body 1 is made of ferromagnetic materials, the distance between the weight-reducing electromagnet 100 and the lower end of the top of the carriage body 1 is in a fixed range, and the size of an air gap is detected by an electromagnet air gap sensor 301. The weight-reducing electromagnet controller 101 simultaneously collects the values of the air gap sensor 301 and the speed sensor 300, and controls the current change of the weight-reducing electromagnet through the change of the speed and the air gap, namely the electromagnetic force of the electromagnet. In the starting stage of the train, namely in the acceleration stage, larger friction force is needed to provide larger acceleration, and at the moment, the weight-reducing electromagnet provides smaller electromagnetic weight reduction under the condition of ensuring a certain air gap range or enlarging a plurality of air gaps. In the uniform speed stage, only the range of the air gap can be determined, and the weight reducing force is determined in a fixed mode. In the deceleration stage, when the deceleration is to be carried out, the weight reducing force is removed, and the brake is carried out. In this way, friction of the rubber wheel 6 is reduced, and abrasion of the rubber wheel 6 is reduced.
The bilateral linear motor driving system comprises a bilateral linear motor primary 200, a bilateral linear motor secondary 201, a linear motor controller 202 and a speed sensor 300. Connecting plates 7 are installed between the bogies 2 and connected through connecting plate shafts 8, and bilateral linear motors are installed on two sides of the connecting plates 7 in symmetrical distribution. The primary double-sided linear motor 200 is arranged on a connecting plate 7 between bogies 2, and the carriage body 1 is made of ferromagnetic materials, so that the secondary linear motor secondary plate 201 is only required to be arranged on the positions, corresponding to the primary double-sided linear motor, of the carriage body 1, and the driving force of the train is provided by the interaction of the primary double-sided linear motor 200 and the secondary double-sided linear motor 201. The purpose of mounting the connecting plate 7 is that the linear motor is a rigid body, when the train turns and other complex road conditions, flexible train operation needs to be carried out through the mechanical structure of the connecting plate 7, and meanwhile, the bilateral linear motor structure ensures that the linear motor is mounted on the connecting plate 7 and can also provide driving force for a suspended train. The linear motor structure directly carries out linear driving on the train without a complex mechanical structure. The speed is set through train operation, the linear motor controller 202 collects speed signals of the speed sensor 300 to control the linear motors, the influence of normal force of the linear motors on train steering and running needs to be considered when the linear motors are installed laterally, but the problem can be perfectly solved by the bilateral linear motors. Different control is realized only in some special sections, for example, when a train turns, different current control is carried out on linear motors on two sides under the condition of not sacrificing the driving force of the train, the normal force difference is realized, and the steering is realized, which is equivalent to a guiding system. As described above, the arrangement of the connecting flat plate can realize mechanical decoupling, which is convenient for the train to flexibly perform complex operations such as turning and the like; the bilateral linear motor can save space, simplify the mechanical structure of the system, realize steering through different control strategies and mechanical structures of the bilateral motor, and effectively improve the driving performance of the suspension type train.
According to the analysis, the lateral bilateral linear motor driving mode and the multi-electromagnet electromagnetic weight reduction are adopted, the pressure of the rubber wheel can be effectively relieved, the service life of the rubber wheel is prolonged, the mechanical structure of a vehicle can be simplified, and the lateral bilateral linear motors are controlled in different modes during steering, so that steering is realized.
The cross section of the box girder shown in fig. 1 is shown in a front sectional view, and the specific size is 780mm × 1100mm, the plate thickness is 15mm (except the thickness of the top plate is 25 mm), the length is 30m, and the material is Q235; the weight-reducing electromagnet is of a mountain shape, the cross section size is 650mm x 200mm, the thicknesses of two side electrode plates are 25mm, the thickness of a middle electrode plate is 50mm, the length is 1m, the material is Q235, the coil material is copper, the filling rate is 0.6, and the working air gap is 8mm to 10 mm; one side of the double-sided linear motor adopts an asynchronous short stator linear motor, the width of an iron core is 300mm, the pole distance is 216mm, the number of poles of the motor is 8, the length of the motor is 1800mm, the number of slots of each phase of each pole is 3, the total number of slots is 80, the air gap flux density is 0.20T, an equivalent air gap is 15mm, a winding material is copper, and the iron core is made of silicon steel sheets; the working air gap of the motor is 6 to 10 mm.
The results of thrust, gravity reduction and guiding force of the system under the condition of the above design parameters are obtained through finite element simulation analysis and are shown in the following table.
| Type of component | Output force (Unit N) | Remarks for note |
| Unilateral linear motor | 6125.3 | Thrust force |
| Weight-reducing electromagnet | 32399 | Gravity reduction |
From the above table, for the single suspended vehicle linear driving and electromagnetic guiding system, a segment of double-sided linear motor can provide 12250.6N thrust, and a weight-reducing electromagnet can provide 52399N weight-reducing force.
As shown in fig. 2, two electromagnetic weight reduction systems and 1 bilateral linear motor constitute a driving weight reduction unit, as a driving system of the train, the bilateral linear motor can provide 12250.6N thrust, and the weight reduction force of the two electromagnets is 64798N.
The invention has the characteristics that the rubber wheel load can be effectively reduced, the service life of the rubber wheel is prolonged, the maintenance workload is reduced, the driving mode is improved, the traditional electric transmission traction mode is changed into a bilateral linear motor driving mode, and the operation is more convenient.
Claims (3)
1. A suspension type train driven by a bilateral linear motor is characterized by comprising a carriage body (1), a first bogie (2) and a second bogie, wherein the first bogie (2) and the second bogie are sleeved in the carriage body (1); the first bogie (2) is connected to one end of the connecting flat plate (7) through a first rotating shaft (8), and the second bogie is connected to the other end of the connecting flat plate (7) through a second rotating shaft; the left inner side and the right inner side of the carriage body (1) are respectively provided with a linear motor secondary aluminum plate (201), and the left outer side and the right outer side of the first bogie (2) and the second bogie are respectively provided with a linear motor primary (200); wheel shafts are respectively arranged below the front part and the rear part of the first bogie (2) and the second bogie, wheels (6) are respectively sleeved at two ends of each wheel shaft, and the wheels (6) are positioned on the track surface (3) on the lower side of the carriage body (1); the lower parts of the first bogie (2) and the second bogie are respectively suspended with a vehicle body (4) through a connecting rod (5).
2. A double sided linear motor driven ride according to claim 1, wherein the left and right outer sides of the first bogie (2) and the second bogie are further provided with linear motor primaries (200) instead of: the left and right outer sides of the connecting flat plate (7) are respectively provided with a linear motor primary (200).
3. A double-sided linear motor driven suspension train according to claim 1 or 2, characterized in that the car body (1) is made of ferromagnetic material; and weight-reducing electromagnets (100) are respectively arranged above the first bogie (2) and the second bogie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011214612.2A CN112277975A (en) | 2020-11-02 | 2020-11-02 | Suspension type train driven by bilateral linear motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011214612.2A CN112277975A (en) | 2020-11-02 | 2020-11-02 | Suspension type train driven by bilateral linear motor |
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| CN112277975A true CN112277975A (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011214612.2A Pending CN112277975A (en) | 2020-11-02 | 2020-11-02 | Suspension type train driven by bilateral linear motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117021962A (en) * | 2023-10-07 | 2023-11-10 | 成都尚华电气有限公司 | Train, system and control method based on short stator linear motor drive |
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| CN104876099A (en) * | 2015-05-16 | 2015-09-02 | 焦作市华鹰机电技术有限公司 | Direct-driven elevator system |
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| CN110682924A (en) * | 2019-11-24 | 2020-01-14 | 山西中海威轨道交通工程有限公司 | Linear electric motor drive and mixed electromagnetism subtract heavy suspension type train |
| CN210391118U (en) * | 2019-06-17 | 2020-04-24 | 山西中海威轨道交通工程有限公司 | Suspension type monorail train system with double-row type electromagnetic weight reduction mechanism |
| CN210390795U (en) * | 2019-06-17 | 2020-04-24 | 山西中海威轨道交通工程有限公司 | Suspension type monorail train system with single electromagnet subtracts heavy structure |
| CN111196165A (en) * | 2020-01-19 | 2020-05-26 | 中国科学院电工研究所 | Vacuum pipeline full permanent magnet repulsion type suspension vehicle rail |
| CN211494032U (en) * | 2019-11-24 | 2020-09-15 | 山西中海威轨道交通工程有限公司 | Linear electric motor drive and mixed electromagnetism subtract heavy suspension type train |
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2020
- 2020-11-02 CN CN202011214612.2A patent/CN112277975A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876099A (en) * | 2015-05-16 | 2015-09-02 | 焦作市华鹰机电技术有限公司 | Direct-driven elevator system |
| CN110182227A (en) * | 2019-06-17 | 2019-08-30 | 山西中海威轨道交通工程有限公司 | A kind of suspension monorail system with the hybrid loss of weight mechanism of electromagnet and permanent magnet |
| CN210391118U (en) * | 2019-06-17 | 2020-04-24 | 山西中海威轨道交通工程有限公司 | Suspension type monorail train system with double-row type electromagnetic weight reduction mechanism |
| CN210390795U (en) * | 2019-06-17 | 2020-04-24 | 山西中海威轨道交通工程有限公司 | Suspension type monorail train system with single electromagnet subtracts heavy structure |
| CN110682924A (en) * | 2019-11-24 | 2020-01-14 | 山西中海威轨道交通工程有限公司 | Linear electric motor drive and mixed electromagnetism subtract heavy suspension type train |
| CN211494032U (en) * | 2019-11-24 | 2020-09-15 | 山西中海威轨道交通工程有限公司 | Linear electric motor drive and mixed electromagnetism subtract heavy suspension type train |
| CN111196165A (en) * | 2020-01-19 | 2020-05-26 | 中国科学院电工研究所 | Vacuum pipeline full permanent magnet repulsion type suspension vehicle rail |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117021962A (en) * | 2023-10-07 | 2023-11-10 | 成都尚华电气有限公司 | Train, system and control method based on short stator linear motor drive |
| CN117021962B (en) * | 2023-10-07 | 2024-01-19 | 成都尚华电气有限公司 | Train, system and control method based on short stator linear motor drive |
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