Controller for magnetic suspension railway

Abstract

The utility model belongs to the technical field of maglev trains, and discloses a controller for a maglev railway, which comprises a C-shaped shell and a fixed top plate, a control circuit structure and a heat dissipation device are arranged in the C-shaped shell and the fixed top plate, a plurality of groups of first fixing lugs are arranged on the C-shaped shell, and a plurality of groups of second fixing lugs are arranged on the fixed top plate. Second fixing lugs corresponding to the first fixing lugs are arranged on the fixing top plate, the [shell and the fixing top plate are fixedly installed at the bottom of a train through bolts, heat dissipation avoiding holes are formed in the bottom face of the [shell, a circuit board is arranged in the [shell, multiple sets of electronic components are installed above the circuit board, and a heat dissipation device is arranged on the outer side of the circuit board in a sleeving mode; the controller is compact and reasonable in structural design, the controller can be installed at the bottom of a train and nearby a sensor and an executing mechanism, the communication distance is shortened, control is more sensitive, heat dissipation is achieved through air flow, a refrigerating device is not used, and the controller is more convenient to use. Energy is saved, and the failure rate can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic levitation train, concretely is a controller for magnetic levitation railway. BACKGROUND

[0002] In the technical field of magnetic levitation train, as one of the core components, the performance of the controller plays a crucial role in the safe and efficient operation of the train. However, the current magnetic levitation train controller faces many challenges in terms of heat dissipation and installation layout.

[0003] Firstly, in terms of heat dissipation, the existing magnetic levitation train controller often uses a refrigeration device based on the thermoelectric effect. Thermoelectric refrigeration uses the Peltier effect of semiconductor materials to achieve refrigeration, but it has some problems that are difficult to overcome. When the controller is running, the semiconductor chip works and generates a hot end. The relatively small size of the magnetic levitation train controller makes it easy to accumulate heat at the semiconductor hot end. As the running time increases, heat continues to accumulate, and if it cannot be effectively dissipated in time, the temperature of the semiconductor chip will continue to rise. High temperature environment will seriously affect the performance of the semiconductor chip. In the long run, the semiconductor chip is easily damaged, which will cause the entire refrigeration device and even the controller to malfunction, affecting the normal operation of the magnetic levitation train and increasing maintenance costs and operational risks.

[0004] Secondly, from the installation layout of the controller, the existing controller has a big defect in the installation position. The distance between the controller and the sensor and the actuator is far away. In the process of train operation, the sensor collects a large amount of key operation data such as train speed, position, levitation height in real time, and transmits these data to the controller for processing. Then the controller sends control instructions to the actuator according to the processing result. But due to the long distance between the controller and the sensor and the actuator, communication delay will inevitably occur in the transmission process. This communication delay will make the controller unable to obtain accurate train operation state information in time, and also unable to quickly convey control instructions to the actuator, resulting in a decrease in the control response speed of the train and making it difficult to achieve precise control of the train. In the case of high-speed operation of the magnetic levitation train, even a very short communication delay can have a serious impact on the stability and safety of the train, such as causing inaccurate levitation height control, which will affect the smooth operation of the train. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the shortcomings of the prior art, the utility model provides a controller for magnetic levitation railway to solve the problems of heat dissipation and other problems of the existing controller mentioned in the background.

[0007] (II) Technical solutions

[0008] In order to achieve the above-mentioned purpose, the utility model provides technical schemes as follows: A controller for magnetic levitation railway, including shell and fixed top plate, the shell and fixed top plate are provided with control circuit structure and heat abstractor in, the shell is provided with a plurality of first fixed ears, the fixed top plate is provided with second fixed ear corresponding with the first fixed ear, the shell and fixed top plate are fixedly installed at the bottom of train through bolt.

[0009] Preferably, the shell bottom is provided with a heat dissipation avoiding hole, the shell is provided with a circuit board, a plurality of electronic components are installed above the circuit board, a heat abstractor is sleeved outside the circuit board, and an L-shaped protection block is arranged on one side of the circuit board and the heat abstractor.

[0010] Preferably, the heat abstractor comprises a heat conduction plate, a plurality of heat conduction pipes, a heat dissipation block and a heat conduction pad, the heat conduction plate is arranged above the circuit board, the heat conduction pad is arranged at the gap between the circuit board and the heat conduction plate, a flexible heat conduction rubber pad is arranged on the top surface of the electronic component, the bottom surface of the heat conduction plate abuts against the flexible heat conduction rubber pad, the top surface of the heat conduction plate abuts against the fixed top plate, a plurality of heat conduction pipes are arranged in the heat conduction plate, the heat dissipation block is arranged below the circuit board, and the plurality of heat conduction pipes extend out of the heat conduction plate into the heat dissipation block.

[0011] Preferably, a plurality of heat pipe protection grooves corresponding to the heat conduction pipes are arranged on the L-shaped protection block, the upper end of the L-shaped protection block abuts against the heat conduction plate, the lower end of the L-shaped protection block abuts against the heat dissipation block, and the side of the L-shaped protection block away from the heat abstractor abuts against the inner wall of the shell.

[0012] Preferably, a heat dissipation fin is arranged near the heat dissipation avoiding hole, the heat dissipation fin is composed of a plurality of streamlined metal sheets, the streamlined metal sheet is cut into a streamlined shape near the side of the L-shaped protection block, and the height of the streamlined metal sheet gradually increases away from the L-shaped protection block.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the utility model provides a controller for magnetic levitation railway, which has the following beneficial effects:

[0015] 1. The controller for magnetic levitation railway is provided with a shell, a fixed top plate and a passive heat abstractor, can be installed at the bottom of train, can be installed near a sensor and an actuator, shortens the communication distance, controls more sensitively, utilizes air flow to dissipate heat, does not use refrigeration device, not only saves energy but also can effectively reduce the failure rate.

[0016] 2, set up the heat dissipation fin, through the controller is installed at the bottom of the train using train running flow air to the controller cooling, no need to set up refrigeration device, and the unique streamline structure can part of the aerodynamic drag into positive pressure, forming a similar vacuum suction fastening effect, make the device adhere to the bottom of the train is not easy to fall off.

[0017] 3, set up L-shaped protection block, protection block can fill the internal space makes it compact, can prevent structure loose, and the upper end against the heat dissipation plate, the lower end against the heat dissipation block, can prevent heat pipe stress, can protect the heat pipe from being damaged, can improve the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the shell internal structure schematic diagram of the utility model;

[0020] Figure 3 It is the heat dissipation device structure schematic diagram of the utility model;

[0021] Figure 4 It is the streamline metal sheet schematic diagram of the utility model.

[0022] In the drawing: 1, shell;2, fixed top plate;3, first fixed lug;4, second fixed lug;5, heat dissipation avoidance hole;6, circuit board;7, heat dissipation device;8, L-shaped protection block;9, heat conduction plate;10, heat pipe;11, heat dissipation block;12, heat conduction pad block;13, heat pipe protection groove;14, heat dissipation fin;15, streamline metal sheet. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0024] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0025] A kind of controller for magnetic levitation railway, including shell 1 and fixed roof 2, control circuit structure and heat dissipation device 7 are arranged in shell 1 and fixed roof 2, a plurality of first fixed ears 3 are provided on shell 1, second fixed ear 4 corresponding with first fixed ear 3 is provided on fixed roof 2, shell 1 and fixed roof 2 are fixedly installed at train bottom by bolt.Compared with traditional installation mode, the device is installed at train bottom near sensor and actuator, and response speed is fast.

[0026] Further, shell 1 bottom is provided with heat dissipation avoiding hole 5, circuit board 6 is arranged in shell 1, a plurality of electronic components are installed above circuit board 6, heat dissipation device 7 is sleeved outside circuit board 6, and L-shaped protection block 8 is arranged on one side of circuit board 6 and heat dissipation device 7.Circuit board 6 is provided with current control circuit, damping control circuit, IGBT, drive circuit, power module, DSP chip and other electronic circuit structures, control circuit structure receives sensor signal, processes various signals and outputs to actuator (electromagnet) to control and adjust its operating state, so that it is more stable, and external disturbances such as vehicle vibration and track unevenness are overcome.

[0027] Further, heat dissipation device 7 includes heat conduction plate 9, a plurality of heat conduction pipes 10, heat dissipation block 11 and heat conduction pad 12, heat conduction plate 9 is arranged above circuit board 6, heat conduction pad 12 is arranged in the gap between circuit board 6 and heat conduction plate 9, flexible heat-conducting rubber pad is laid on the top surface of electronic components, the bottom surface of heat conduction plate 9 abuts against flexible heat-conducting rubber pad, the top surface of heat conduction plate 9 abuts against fixed roof 2, a plurality of heat conduction pipes 10 are arranged in heat conduction plate 9, heat dissipation block 11 is arranged below circuit board 6, and a plurality of heat conduction pipes 10 extend out of heat conduction plate 9 into heat dissipation block 11.Some higher electronic components contact heat dissipation block 11 through flexible heat-conducting rubber pad, some lower chip-type electronic components are raised by heat conduction pad 12, and heat conduction pad 12 fills the gap to make the structure more firm.

[0028] Further, a plurality of heat pipe protection grooves 13 corresponding with heat conduction pipe 10 are formed in L-shaped protection block 8, the upper end of L-shaped protection block 8 abuts against heat conduction plate 9, the lower end of L-shaped protection block 8 abuts against heat dissipation block 11, and the side of L-shaped protection block 8 away from heat dissipation device 7 abuts against the inner wall of shell 1.L-shaped protection block 8 can protect heat conduction pipe 10, and prevent heat conduction pipe 10 from being damaged by force.

[0029] Further, the heat dissipation block 11 is provided with heat dissipation fins 14 near the heat dissipation avoiding hole 5, the heat dissipation fins 14 are composed of multiple groups of streamlined metal sheets 15, the streamlined metal sheets 15 are cut into streamlined shape near one side of the L-shaped protection block 8, and the height of the streamlined metal sheet 15 gradually increases away from the L-shaped protection block 8. When moving, air moving along the streamlined metal sheet 15 can reduce air resistance and generate upward pressure, which can make the device more stable, and some air flowing from the gap between the streamlined metal sheets 15 will take away heat to play a heat dissipation function.

[0030] Structure description:

[0031] The shell 1 is the shell structure of the controller, the bottom surface is provided with a heat dissipation avoiding hole 5, which is used to accommodate internal components such as the circuit board 6 and the heat dissipation device 7, and provides protection and participates in the overall installation;

[0032] The fixed top plate 2 is a top structure matched with the shell 1, and cooperates with the shell 1 to fix the internal control circuit structure and the heat dissipation device 7, and is connected with the shell 1 through bolts and is installed on the bottom of the train with the help of the second fixed lug 4;

[0033] The first fixed lug 3 is an ear structure provided on the shell 1, corresponding to the second fixed lug 4 on the fixed top plate 2, connecting the two through bolts to realize stable installation of the controller on the bottom of the train;

[0034] The second fixed lug 4 is located on the fixed top plate 2 and cooperates with the first fixed lug 3 to assist the shell 1 and the fixed top plate 2 to be fixed on the bottom of the train through bolts to ensure the stability of the installation;

[0035] The heat dissipation avoiding hole 5 is a hole structure provided on the bottom surface of the shell 1, which provides space for the heat dissipation fins 14 of the heat dissipation block 11 to facilitate heat dissipation to the external environment;

[0036] The circuit board 6 is the core circuit carrier of the controller, multiple electronic components are installed on the top, bearing current control circuit, damping control circuit and various electronic circuit structures, responsible for processing sensor signals and controlling the actuator;

[0037] The heat dissipation device 7 is a heat dissipation structure for ensuring stable operation of the controller, composed of a heat conduction plate 9, a heat pipe 10, a heat dissipation block 11 and a heat conduction pad 12, which transmits and dissipates the heat generated by electronic components;

[0038] The L-shaped protection block 8 is a protection structure provided on one side of the circuit board 6 and the heat dissipation device 7, which is provided with a heat pipe protection groove 13 to protect the heat pipe 10 from damage by external force, and fills the internal space to prevent structure loosening;

[0039] Heat-conducting plate 9: a component of heat-dissipating device 7, located above circuit board 6, with its bottom surface against the flexible heat-conducting rubber pad on the electronic components and its top surface against fixed top plate 2, and with heat-conducting pipe 10 transferring heat to heat-dissipating block 11;

[0040] Heat-conducting pipe 10: a key component of heat-dissipating device 7 for heat transfer, which is arranged in heat-conducting plate 9 and extends to heat-dissipating block 11, and which quickly conducts heat and realizes efficient heat dissipation by virtue of its good heat-conducting performance;

[0041] Heat-dissipating block 11: located below circuit board 6 and connected with heat-conducting pipe 10, and with heat-dissipating fins 14 arranged near heat-dissipating avoidance hole 5, so as to dissipate the heat transferred by heat-conducting pipe 10 to the air through heat-dissipating fins 14;

[0042] Heat-conducting pad block 12: a structure installed at the gap between circuit board 6 and heat-conducting plate 9, which is used to pad up the electronic components of low height, so as to make them better contact with heat-conducting plate 9, and to fill the gap and fasten the structure;

[0043] Heat-pipe protection groove 13: a groove-shaped structure opened on L-shaped protection block 8, which corresponds to heat-conducting pipe 10 and provides protection for heat-conducting pipe 10, so as to prevent it from being damaged by force in the vibration of train operation;

[0044] Heat-dissipating fins 14: heat-dissipating structures installed near heat-dissipating block 11 and heat-dissipating avoidance hole 5, which are composed of multiple groups of streamlined metal sheets 15, and which utilize the air flow during train operation to take away heat and enhance the fixing effect by virtue of the unique structure;

[0045] Streamlined metal sheet 15: a metal sheet that constitutes heat-dissipating fins 14, which is cut and processed into a streamlined shape near one side of L-shaped protection block 8, and which gradually increases in height, so as to reduce air resistance, convert aerodynamic wind resistance into positive pressure and assist heat dissipation.

[0046] Working principle: The controller is mainly composed of a shell 1 and a fixed top plate 2, which are connected by bolts and installed at the bottom of the train through the first fixed ear 3 on the shell 1 and the second fixed ear 4 on the fixed top plate 2. This installation method has obvious advantages, which enables the controller to be close to the sensor and the actuator, greatly shortening the signal transmission distance. During the operation of the maglev train, the sensor collects various running data of the train in real time, such as speed, position, suspension height, etc., and quickly transmits these data to the controller. Due to the short distance, the signal transmission time is greatly reduced, and the controller can receive and process the data faster, thereby achieving fast response and accurate control of the train. The heat dissipation device 7 is an important part of ensuring the stable operation of the controller. It is mainly composed of a heat conduction plate 9, multiple heat conduction pipes 10, a heat dissipation block 11 and a heat conduction pad 12. The electronic components installed on the circuit board 6 generate a large amount of heat during work. In order to effectively dissipate heat, flexible heat-conducting rubber pads are laid on the top surface of the electronic components. The bottom surface of the heat conduction plate 9 is pressed against the flexible heat-conducting rubber pads, which can quickly absorb the heat generated by the electronic components. At the same time, heat conduction pads 12 are arranged in the gap between the circuit board 6 and the heat conduction plate 9. For some low-height chip-type electronic components, the heat conduction pads 12 not only increase their height to make them better contact with the heat conduction plate 9, but also fill the gap to make the structure more secure. The multiple heat conduction pipes 10 inside the heat conduction plate 9 are the key channels for heat transfer. The heat conduction pipes 10 have good heat conduction performance and can quickly transfer the heat absorbed by the heat conduction plate 9 to the heat dissipation block 11 below. The heat dissipation block 11 is adjacent to the heat dissipation avoidance hole 5 opened on the bottom surface of the shell 1, and a heat dissipation fin 14 composed of multiple streamlined metal sheets 15 is arranged at this position. When the train is running, air will flow along the streamlined metal sheets 15. On the one hand, this streamlined design can reduce air resistance, and on the other hand, air flow will carry away the heat on the heat dissipation fin 14, thereby achieving heat dissipation of the controller. Some air will also flow from the gap between the streamlined metal sheets 15, further enhancing the heat dissipation effect. The L-shaped protection block 8 plays an important protective role in the controller. It is provided with multiple heat pipe protection grooves 13 corresponding to the heat conduction pipes 10, the upper end is pressed against the heat conduction plate 9, the lower end is pressed against the heat dissipation block 11, and the side away from the heat dissipation device 7 is pressed against the inner wall of the shell 1. During the operation of the train, various vibrations and impacts will be generated, and if there is no effective protection measures, the heat conduction pipes 10 are easy to be damaged. The L-shaped protection block 8 can disperse and buffer external impact force through this structural design, preventing the heat conduction pipes 10 from being damaged by force, thereby ensuring the normal work of the heat dissipation device 7 and improving the reliability and service life of the controller. The heat dissipation fin 14 of the controller adopts a unique design, the streamlined metal sheets 15 are cut into streamlined shape near one side of the L-shaped protection block 8, and the height gradually increases away from the L-shaped protection block 8. When the train is moving, air moves along the streamlined metal sheets 15.This design not only can reduce air resistance, can make air to device produce upward pressure, form similar vacuum adsorption effect, make device fixed more stablely. Meanwhile, the flow of air can also take away heat, realize the heat dissipation function, further improve the stability and work efficiency of the controller. In summary, the controller for magnetic levitation railway realizes the fast response and accurate control to the train operation data through reasonable overall layout, efficient heat dissipation device 7, reliable protection structure and unique aerodynamic design, guarantees the stable operation under complex environment, provides strong guarantee for the safe and efficient operation of the magnetic levitation train.

[0047] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A controller for a magnetic levitation railway, characterized in that: The system includes a shell (1) and a fixed top plate (2). The shell (1) and the fixed top plate (2) are equipped with a control circuit structure and a heat dissipation device (7). The shell (1) is provided with multiple sets of first fixing ears (3), and the fixed top plate (2) is provided with second fixing ears (4) corresponding to the first fixing ears (3). The shell (1) and the fixed top plate (2) are fixedly installed at the bottom of the train by bolts.

2. A controller for a magnetic levitation railway according to claim 1, characterized in that: The bottom surface of the casing (1) is provided with heat dissipation and avoidance holes (5), a circuit board (6) is provided inside the casing (1), multiple electronic components are installed on the top of the circuit board (6), a heat dissipation device (7) is sleeved on the outside of the circuit board (6), and an L-shaped protective block (8) is provided on one side of the circuit board (6) and the heat dissipation device (7).

3. A controller for a magnetic levitation railway according to claim 2, characterized in that: The heat dissipation device (7) includes a heat-conducting plate (9), multiple sets of heat-conducting pipes (10), a heat sink (11), and a heat-conducting pad (12). A heat-conducting plate (9) is provided above the circuit board (6), and a heat-conducting pad (12) is provided in the gap between the circuit board (6) and the heat-conducting plate (9). A flexible heat-conducting pad is laid on the top surface of the electronic components. The bottom surface of the heat-conducting plate (9) abuts against the flexible heat-conducting pad, and the top surface of the heat-conducting plate (9) abuts against the fixed top plate (2). Multiple sets of heat-conducting pipes (10) are provided inside the heat-conducting plate (9). A heat sink (11) is provided below the circuit board (6), and multiple sets of heat-conducting pipes (10) extend out of the heat-conducting plate (9) into the heat sink (11).

4. A controller for a magnetic levitation railway according to claim 3, characterized in that: The L-shaped protective block (8) has multiple sets of heat pipe protection grooves (13) corresponding to the heat pipe (10). The upper end of the L-shaped protective block (8) abuts against the heat-conducting plate (9), the lower end of the L-shaped protective block (8) abuts against the heat sink (11), and the side of the L-shaped protective block (8) away from the heat sink (7) abuts against the inner wall of the shell (1).

5. A controller for a magnetic levitation railway according to claim 3, characterized in that: The heat sink (11) is provided with heat sink fins (14) near the heat sink clearance hole (5). The heat sink fins (14) are composed of multiple sets of streamlined metal sheets (15). The streamlined metal sheets (15) are cut into a streamlined shape on the side near the L-shaped protective block (8), and the height of the streamlined metal sheets (15) gradually increases as they move away from the L-shaped protective block (8).

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