A suspended train with linear drive and electromagnetic guidance

Abstract

The present invention discloses a linearly driven and electromagnetically guided suspended train, wherein a reaction plate is arranged below the top plate of the track box beam, and the first frame and the second frame are mounted inside the track box beam; the front and rear linear motors are arranged above the first frame, and the front and rear guide electromagnets and guide sensors are arranged on the left and right sides respectively, and a guide wheel group is also arranged; the wheel axle is also arranged below the first frame, and the two ends of the wheel axle are respectively mounted with vehicle support wheels, and the vehicle support wheels are placed on the running surface of the lower plate of the track box beam; the second frame has the same structure as the first frame; the lower part of the first frame is also connected to the front part of the vehicle body through a front suspension arm, and the lower part of the second frame is also connected to the rear part of the vehicle body through a rear suspension arm. The structure of the present invention is conducive to alleviating the wear of the guide wheels of the existing suspended monorail train, increasing the lateral resistance of the vehicle, simplifying the vehicle structure and reducing the cost of operation and maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation, and in particular to a linearly driven and electromagnetically guided suspended train. Background Art

[0002] The suspended train is a new type of rail transit tool. As a diversified urban rail transit system, it has many advantages such as small footprint, short construction period, and low investment cost. It can serve the sightseeing of tourist areas, three-dimensional transportation between urban buildings, and supplementary transportation of elevated interchanges. With its many advantages, it is expected to have broad development and application prospects in my country.

[0003] At present, in order to achieve the purpose of noise reduction, the running wheels of existing suspended monorail vehicles are mostly rubber wheels. However, the running wheels themselves bear the weight of the vehicle, and the wear of the rubber wheels is relatively serious during actual operation, which in turn increases the system operation and maintenance costs.

[0004] In addition, the existing suspended train's running direction is controlled by guide wheels, which need to control the vehicle's direction through contact and friction with the side of the track box girder. On the one hand, this will cause wear of the guide wheels. On the other hand, due to the gap between the guide wheels and the side of the track box girder, back and forth shaking will occur during the guiding process, resulting in poor lateral resistance of the vehicle.

[0005] Currently, Germany, Japan, the United States, and China have all conducted research on suspended monorail trains. Chinese cities such as Guizhou Huangguoshu, Sichuan Chengdu, and Tianjin Binhai New Area have already planned and constructed projects. Researching and optimizing standard suspended trains is urgent and beneficial for the exploration of diversified transportation and future transportation modes. Summary of the invention

[0006] The object of the present invention is to provide a linearly driven and electromagnetically guided suspended train.

[0007] The technical solution of the present invention is as follows:

[0008] A linearly driven and electromagnetically guided suspended train comprises a track box beam, a reaction plate is arranged below the top plate of the track box beam; and a first frame is sleeved inside the track box beam, a front linear motor and a rear linear motor are arranged above the first frame, a left front guiding electromagnet, a left rear guiding electromagnet, a right front guiding electromagnet and a right rear guiding electromagnet are arranged on the left and right sides respectively, and each guiding electromagnet is provided with a guiding sensor matched therewith; the front linear motor and the rear linear motor are both adjacent to the reaction plate, and the left front guiding electromagnet and the left rear guiding electromagnet are arranged on the left and right sides respectively. The guide electromagnet and its guide sensor are both adjacent to the left side plate of the track box beam, and the right front guide electromagnet and the right rear guide electromagnet and their guide sensors are both adjacent to the right side plate of the track box beam; guide wheel groups are also provided on the left and right sides of the first frame, respectively; a wheel axle is also provided below the first frame, and vehicle support wheels are respectively mounted on both ends of the wheel axle, and the vehicle support wheels are placed on the running surface of the lower plate of the track box beam; it also includes a second frame with the same structure as the first frame, and the bottom of the first frame is also connected to the front of the vehicle body through a front suspension arm, and the bottom of the second frame is also connected to the rear of the vehicle body through a rear suspension arm.

[0009] Furthermore, the first frame and the second frame are respectively provided with weight-reducing electromagnets in the middle of the upper part; each weight-reducing electromagnet is provided with a weight-reducing sensor cooperating therewith; the weight-reducing electromagnets and their weight-reducing sensors are both adjacent to the top plate of the track box beam.

[0010] Furthermore, the reaction plate is made of anti-magnetic conductive material, and the track box beam is made of magnetic conductive material.

[0011] The structure of the present invention is conducive to alleviating the wear of the guide wheels of the existing suspended monorail train, increasing the lateral resistance of the vehicle, simplifying the vehicle structure and reducing the cost of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the left schematic diagram of the overall structure of the system.

[0013] Figure 2 It is a schematic diagram on the right side of the overall structure of the system.

[0014] Figure 3 It is a cross-sectional view of the linear drive portion of the overall system structure.

[0015] Figure 4 It is a cross-sectional view of the electromagnetic weight reduction part of the overall system structure.

[0016] Figure 5 It is a schematic diagram of two systems combined to form a complete vehicle unit.

[0017] Figure 6 It is a schematic diagram of the design of the weight-reducing electromagnet in a specific embodiment.

[0018] Figure 7 It is a design schematic diagram of the guide electromagnet in a specific embodiment.

[0019] Figure 8 It is a design schematic diagram of a short-stator asynchronous linear motor in a specific embodiment.

[0020] The reference numerals in the figure indicate: a linear drive system 100, a linear drive system reaction plate 101, an asynchronous short stator linear motor 102, an asynchronous short stator linear motor 103, a linear motor controller 104, a linear motor controller 105, a linear motor stator core 106 and a linear motor stator winding 107; an electromagnetic guide system 200, a guide electromagnet 201, a guide electromagnet 202, a guide electromagnet 203, a guide electromagnet 204, a guide controller 205, a guide controller 206, a guide controller 207, a guide controller Device 208, guide sensor 209, guide sensor 210, guide sensor 211, guide sensor 212, guide electromagnet pole 213 and guide electromagnet coil 214; electromagnetic weight reduction system 300, weight reduction electromagnet 301, weight reduction controller 302, weight reduction sensor 303, weight reduction electromagnet pole 304 and weight reduction electromagnet coil 305; vehicle guide wheel group 400, vehicle support wheel 4, track box girder 500, track box girder top surface 501, track box girder running surface 502, frame 1, vehicle body 2, boom 3. DETAILED DESCRIPTION

[0021] By using a linear motor drive to achieve the movement of the suspended train, the mechanical transmission device can be omitted. The driving part of the wheel in the existing system will be omitted, and only the supporting function will be assumed, so as to simplify the wheel axle system of the suspended train and improve its reliability. At the same time, with the electromagnetic weight reduction technology, the internal top surface of the box girder of the suspended train system track is fully utilized, and the electromagnetic suction force is used to make the top surface of the box girder generate an upward force on the vehicle, thereby reducing the pressure between the rubber wheel of the vehicle and the running surface of the box girder, achieving the effect of effectively reducing the wear of the rubber wheel. At the same time, the electromagnetic guidance method can effectively avoid the wear of the guide wheel and reduce the operation and maintenance costs, and can also provide sufficient anti-lateral force to ensure the smooth operation of the train.

[0022] The specific embodiments are as follows:

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4The system includes a linear drive system 100, an electromagnetic guide system 200, an electromagnetic weight reduction system 300, a vehicle guide wheel set 400 and a track box beam 500. The linear drive system is composed of a reaction plate 101, an asynchronous short stator linear motor 102, an asynchronous short stator linear motor 103, a linear motor controller 104, and a linear motor controller 105; the electromagnetic guide system 200 is composed of a guide electromagnet 201, a guide electromagnet 202, a guide electromagnet 203, a guide electromagnet 204, a guide controller 205, a guide controller 206, a guide controller 207, a guide controller 208, a guide sensor 209, a guide sensor 210, a guide sensor 211 and a guide sensor 212; the electromagnetic weight reduction system 300 is composed of a weight reduction electromagnet 301, a weight reduction controller 302 and a weight reduction sensor 303. The reaction plate 101 is fixed at the center of the upper surface of the track box beam 500 of the suspended monorail vehicle system, the asynchronous short stator linear motors 102 and 103 are installed on the upper part of the frame of the suspended monorail vehicle, corresponding to the position of the reaction plate 101, and the linear motor controllers 104 and 105 are installed on the frame of the suspended monorail vehicle; the guide electromagnets 201, 202, 203 and 204 are respectively fixed on the four corners of the side of the frame of the suspended monorail vehicle, corresponding to the left and right inner sides of the track box beam 500, and the guide controller and guide sensor of the electromagnetic guide system 200 are both installed on the frame of the suspended monorail vehicle; the weight reduction electromagnet 301 is installed on the upper part of the frame of the suspended monorail vehicle, corresponding to the upper surface of the track box beam 500, and the weight reduction controller and weight reduction sensor of the electromagnetic weight reduction system 300 are both installed on the frame of the suspended monorail vehicle. The vehicle guide wheel group 400 is fixed on both sides of the frame of the suspended monorail vehicle.

[0024] The reaction plate 101 installed on the inner upper surface of the track box beam 500 is made of anti-magnetic conductive material, and the track box beam 500 is made of magnetic conductive material.

[0025] The suspended monorail vehicle is powered by a linear drive system 100 for running and conventional braking. The vehicle's running posture is controlled by an electromagnetic guidance system 200. The electromagnetic weight reduction system 300 can reduce the pressure on the vehicle's tires. The vehicle's guide wheel set 400 can play a protective role and can be used for emergency guidance in the event of a failure in the electromagnetic guidance system 200.

[0026] The asynchronous short stator linear motors 102 and 103 generate driving force through electromagnetic interaction with the reaction plate 101 to drive the suspended monorail vehicle to operate. The magnitude of the driving force is achieved by the linear motor controllers 104 and 105 by controlling the input current magnitude, frequency, and phase sequence.

[0027] The four guide electromagnets 201, 202, 203, and 204 can all generate suction with the inner side of the track box beam 500 through electromagnetic action. The guide controller can control the size of the suction between the guide electromagnet and the track box beam according to the distance value collected by the guide sensor. When the distance value collected by a certain guide sensor is greater than its rated distance range, the electromagnetic suction force of the corresponding guide electromagnet is increased. When the distance value collected by a certain guide sensor is less than its rated distance range, the electromagnetic suction force of the corresponding guide electromagnet is reduced. The four guide electromagnets work together to adjust the running posture of the frame.

[0028] The weight-reducing electromagnet 301 generates electromagnetic suction through electromagnetic interaction with the surface of the track box beam 500, and the weight-reducing controller 302 can control the magnitude of the suction between the weight-reducing electromagnet 301 and the track box beam 500 according to the distance value collected by the weight-reducing sensor 303. Considering the factors of the unevenness of the actual line, the installation error of the track box beam and the settlement of the line, the distance value between the weight-reducing electromagnet and the inner upper surface of the track box beam is not fixed during the actual operation. When the distance value collected by the weight-reducing sensor is greater than the rated distance value, the suction between the weight-reducing electromagnet and the track box beam is increased. When the distance value collected by the weight-reducing sensor is less than the rated distance value, the suction between the weight-reducing electromagnet and the track box beam is reduced. The suction generated by the weight-reducing electromagnet can reduce the force between the wheels of the suspended monorail vehicle system and the track box beam, thereby achieving the purpose of weight reduction.

[0029] like Figure 5 By combining two suspended vehicles and two sets of linear drive and electromagnetic guidance systems for suspended vehicles, adding a crane arm to the bottom of each vehicle, and then fixing the carriages through the crane arm, a complete suspended train unit that can be used for marshaling can be realized to realize passenger operation.

[0030] like Figure 6 , Figure 7 and Figure 8The cross-sectional dimensions of the track box beam are 780mm*1100mm, the plate thickness is 15mm (except the top plate thickness is 25mm), the length is 30m, and the material is Q235; the cross-sectional dimensions of the reaction plate are 400mm*4mm, the length is 30m, and the material is aluminum; the weight-reducing electromagnet is a "mountain" type, with a cross-sectional dimension of 650mm*200mm, the thickness of the two side plates is 25mm, the thickness of the middle plate is 50mm, the length is 1m, the material is Q235, the wire package material is copper, and the filling rate is 0.6, The working air gap is 8mm; the core width of the asynchronous short stator linear motor is 240mm, the pole pitch is 216mm, the number of motor poles is 8, the motor length is 1900mm, the number of slots per pole per phase is 3, the total number of slots is 80, the air gap magnetic density is 0.18T, the equivalent air gap is 19mm, the winding material is copper, and the core is made of silicon steel sheet; the cross-sectional size of the guide electromagnet is 150mm*150mm, the pole plate thickness is 15mm, the length is 300mm, the material is Q235, the wire package material is copper, the filling rate is 0.6, and the working air gap is 6mm.

[0031] Through finite element simulation analysis, it is concluded that under the above design parameters, the results of the system's thrust, weight reduction, and guide force are shown in the table below.

[0032] Part Type Output force (unit N) Remark Asynchronous short stator linear motor 5460 thrust Weight loss electromagnet 52399 Reduced Gravity Guide electromagnet 7672 Guiding force

[0033] It can be seen from the above table that for the linear drive and electromagnetic guidance system of a single suspended vehicle, its two linear motors can provide a total thrust of 10920N, its one weight-reducing electromagnet can provide a weight-reducing force of 52399N, and its single guidance electromagnet can provide a guidance force of 7672N.

[0034] like Figure 5 The linear drive and electromagnetic guidance systems of the two suspended vehicles can be combined into a suspended train unit, with a total thrust of 21840N, approximately equivalent to 2184Kg, and a total weight reduction of 104798N, approximately equivalent to 10480Kg.

[0035] From the above analysis, we know that the use of linear drive, electromagnetic weight reduction, and electromagnetic guidance can effectively alleviate the pressure on the rubber tires and increase the service life of the rubber tires. At the same time, it can simplify the mechanical structure of the vehicle. By adding electromagnetic guidance, the guide wheels in existing vehicles can be transformed into safety protection wheels with almost no contact friction, effectively reducing operating and maintenance costs.

[0036] In summary, the present invention provides a linear drive and electromagnetic guidance system for a suspended vehicle. The entire system has the characteristics of simple structure and low operation and maintenance costs, and can well meet the needs of urban auxiliary transportation, tourist area transportation, and inter-building transportation.

Claims

1. A linearly driven and electromagnetically guided suspended train, characterized in that: The invention comprises a track box beam (500), wherein a reaction plate (101) is arranged below the top plate of the track box beam (500); and further comprises a first frame sleeved inside the track box beam (500), wherein a front linear motor (102) and a rear linear motor (103) are arranged above the first frame, and a left front guide electromagnet (203), a left rear guide electromagnet (204), a right front guide electromagnet (202) and a right rear guide electromagnet (201) are arranged on the left and right sides respectively, and each guide electromagnet is provided with a guide sensor matched therewith; the front linear motor (102) and the rear linear motor (103) are arranged above the first frame, and a left front guide electromagnet (203), a left rear guide electromagnet (204), a right front guide electromagnet (202) and a right rear guide electromagnet (201) are arranged on the left and right sides respectively. The motors (103) are all adjacent to the reaction plate (101); the left front guide electromagnet (203) and the left rear guide electromagnet (204) and their guide sensors are all adjacent to the left side plate of the track box beam (500); the right front guide electromagnet (202) and the right rear guide electromagnet (201) and their guide sensors are all adjacent to the right side plate of the track box beam (500); guide wheel groups (400) are also provided on the left and right sides of the first frame respectively; a wheel axle is also provided below the first frame, and vehicle support wheels are respectively mounted on both ends of the wheel axle, and the vehicle support wheels are placed on the running surface of the lower plate of the track box beam (500); It also includes a second frame with the same structure as the first frame. The lower part of the first frame is connected to the front part of the vehicle body through a front suspension arm, and the lower part of the second frame is connected to the rear part of the vehicle body through a rear suspension arm.

2. A linearly driven and electromagnetically guided suspended train as claimed in claim 1, characterized in that: The first frame and the second frame are also provided with a weight-reducing electromagnet (301) in the middle of the upper part respectively; each weight-reducing electromagnet (301) is provided with a weight-reducing sensor (303) matched therewith; the weight-reducing electromagnet (301) and its weight-reducing sensor (303) are both adjacent to the top plate of the track box beam (500).

3. A linearly driven and electromagnetically guided suspended train as claimed in claim 1, characterized in that: The reaction plate (101) is made of antimagnetic conductive material, and the track box beam (500) is made of magnetic conductive material.

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