KR20010077501A - A personal rapid transit positioning a linear induction motor on the bottom of vehicle - Google Patents

Abstract

PURPOSE: A PRT(Personal Rapid Transit) system having a linear induction motor is provided to simplify structure and to realize stable operation of a PRT vehicle by mounting a linear induction motor in the bottom of the vehicle. CONSTITUTION: A PRT system includes a motor drive member(81) and a reaction rail(82) composing a linear induction motor(80). The linear induction motor is installed in a bottom of a vehicle. For a smooth travel and shakiness prevention, left and right guide wheels(90a,90b) and guide rails(91a,91b) are installed. Branch devices(100a,100b) are prepared in the PRT system. The branch devices are constituted of branch electromagnets(101a,101b) and branch rails(102a,102b). A vehicle is guided in a desired direction by the electromagnetic force of the branch electromagnets. Since linear induction motors are installed horizontally, a void is kept uniform. Therefore, stable driving force is obtained.

Description

A personal rapid transit positioning a linear induction motor on the bottom of vehicle

The present invention relates to a PRT (Personal Rapid Transit) system that moves on a track hypothesized by a linear induction motor. In particular, the linear induction motor is mounted on the floor of a vehicle to simplify the structure and enable stable driving. In addition, the present invention relates to a PALTI system equipped with a linear induction motor on the floor of the vehicle provided with a branch auxiliary wheel to prevent the accident of leaving the track at the time of branching.

In general, with the rapid development of science and technology, passenger cars without environment and pollution are expected to be commercialized in the future, and a typical passenger vehicle is a railroad car that runs on elevated tracks, which are hypothesized to have a constant height on the ground. Such a system using a tracked vehicle is commonly referred to as a personal rapid transit (hereinafter, referred to as a PALTI system). PALTI system uses a linear induction motor to drive on a fixed track. The PTI system is provided with a branching device in the vehicle body in order to branch to the branch to be driven from the branch point. In addition, a braking device is also provided to stop where desired. The PTI system equipped with such a conventional linear induction motor is shown in FIGS. 1 to 4.

FIG. 1 is a configuration diagram of a PRT system driven by a conventional linear induction motor, and FIG. 2 is a view for explaining a brake device applied to the method shown in FIG.

As shown in the figure, the vehicle body 20 is seated in the guideway wall 10 having an upper opening and having a substantially rectangular space. Main wheels 22a and 22b are formed below the main frame 21 of the vehicle body 20, and a pair of motor driving members 31a and 31b are fixed to both sides thereof. The pair of motor driving members 31a and 31b are fixed to the left and right sides of the main frame 21 by horizontal supports 32a and 32b. Corresponding reaction rails 33a and 33b are provided on the guide path wall 10 facing the motor driving members 31a and 31b, respectively. As a result, the reaction rails 33a and 33b and the motor driving members 31a and 31b react to obtain a driving force of the vehicle. Thus, the motor driving members 31a and 31b and the reaction rails 33a and 33b which obtain the driving force by the interaction are collectively referred to as linear induction motors 30a and 30b. The linear induction motors 30a and 30b are designed to have a narrow width of the motor driving member and the reaction rail of the linear induction motor in order to reduce the installation cost of the reaction rails 33a and 33b. In order to obtain the propulsion force of the desired size with such narrow width, the length of the linear induction motor is made very long.

In addition, the PALTI system is provided with branching devices 40a and 40b, and the reaction rails 33a and 31b attached to the motor driving members 31a and 31b and the guiding path wall 10 which are usually provided in the vehicle body 20 are provided. Branching is performed by the attraction force between 33b). However, in case of lack of magnetic attraction of the linear induction motors 30a and 30b, branch electromagnets 41a and 41b are attached to the upper and lower sides of the motor driving members 31a and 31b. Branch rails 42a and 42b are formed on the upper and lower sides of the 33a and 33b. The branch rails 42a and 42b are made of soft iron, and guide the vehicle in a desired direction by magnetic attraction with the branch electromagnets 41a and 41b. That is, when the branch electromagnet 41a on the left side of the main frame 21 is activated and exhibits magnetism, the branch rail 42a and magnetic attraction corresponding thereto are generated and branched toward the left rail from the branch point, on the contrary, on the right side. When the branch electromagnet 41b provided in the magnetism becomes magnetic, the branch rail 42b on the right side and magnetic attraction are generated to be guided to the right rail at the branch point.

In particular, the PTI system is provided with pairs of guide wheels 50a, 50b, 51a, 51b and guide rails 60a, 60b, 61a, 61b, which are arranged up and down, to smoothly run and to prevent oscillation during driving. have. The guide wheels 50a, 50b, 51a, and 51b are mounted to the left and right ends of the support shafts 52a, 52b, 53a, and 53b arranged on the main frame 21, and the guide rails 60a, 60b, 61a, and 61b are It is attached in the guide path wall 10 opposite it.

The PALTI system is provided with braking devices 60a and 60b to stop at a desired position during travel. The braking devices 60a and 60b attach brake plates 62a and 62b to both ends of the fixed bars 61a and 61b that are horizontally fixed to both upper sides of the main frame 21, and the movable bars 63a and 63b. By the operation of the contracted pair of brake plates (62a, 62b) is to contract or expand the drive. Therefore, the opposing brake plates 62a and 62b stop the vehicle by the friction by pressing and holding both sides of the reaction rails 33a and 33b attached to the guide path wall 10 correspondingly thereto.

As described above, the conventional PTA system causes the following problems because the linear induction motor is composed of a pair of the left and right sides of the vehicle body.

3A and 3B are diagrams for explaining a problem according to a driving method of a linear induction motor applied to an existing method, in which the motor driving member 31, which is a component of the linear induction motor 30, and corresponding intervals thereof are shown. The spaced reaction rails 33 maintain a constant air gap d by the air gap holding wheels 34. In particular, the driving force of the linear induction motor 30 is greatly affected by the small distance change of the motor driving member 31 and the reaction rail 33 changes. In general, since the curved curvature of the left and right directions is much larger than the upper and lower curvatures of the ground, the distance between the motor driving member 31 and the reaction rail 33 is determined by the characteristics of the route when the curved section is operated. Difficult to keep constant Therefore, the driving force is unstable at the time of driving, causing a great obstacle in building a safe system. In particular, as the curvature radius has a small curvature radius, this problem is more difficult to solve. To solve this problem, the motor driving member 31 of the linear induction motor 30 is divided into two or more and the connection point thereof is solved. Although a joint structure is used to connect the joint, this causes another problem that increases the manufacturing and maintenance costs as well as complicates the structure, making maintenance difficult.

In addition, such a linear induction motor is composed of two pairs on the left and right sides of the vehicle body not only increases the weight of the entire system, but also increases the power consumption for driving him by increasing the weight of the vehicle, and also makes the guideway wall, which is the driving path, more robust. There are construction difficulties that must be followed. As a result, the existing system has been closed due to an increase in overall costs for manufacturing and operation.

4 is a view for explaining the problem of the branch drive in the branch line in the conventional method, the branch electromagnet (41a, 41b) shown in the black is shown in the magnetized state and white It indicates a state of no magnetization. In the conventional system, when an abnormality occurs in the branching device during the branching, there is a high possibility that the vehicle 1 collides with the guide road wall 10 in the middle of the fork. That is, if the branch electromagnets 41a and 41b are not magnetized, the branch rail (not shown) attached to the guide path wall 10 on the side to be directed and no manpower are generated, so that the vehicle 1 loses its direction and As you can see, at the crossroads, it could cause an extremely dangerous accident that hits the front wall of the guideway. In addition, since the branch rail of the soft iron material is manufactured integrally with the reaction rail and installed in all sections, that is, branch rails are installed even in sections other than the crossroads, so that the installation cost is increased, and the weight of the vehicle body to support them is increased. In addition, the weight is also increased, the weight of the entire system is heavy and the production cost increases.

In addition, the conventional PTI system has a branch rail attached to the reaction rail is integrated, so the width of the contraction or expansion of the baffle plate gripping the upper and lower sides should be turned on, and as a result, the brake plate becomes large and heavy.

As described above, the existing system has two pairs of linear induction motors and branch rails installed in all sections, and the brake plate becomes large, resulting in heavy weight of the entire system, thereby increasing the energy required for operation, and increasing the cost of manufacturing and repairing. It was uneconomical.

Accordingly, an object of the present invention is to solve the above-mentioned drawbacks, and to install a linear induction motor on the floor of the vehicle to simplify the structure and stable driving PALTI equipped with a linear induction motor on the vehicle floor In providing a system.

Furthermore, the present invention provides a PALTI equipped with a linear induction motor mounted on the floor of the vehicle, which has a branch auxiliary wheel, which prevents the accident of leaving the track at the branch in advance, thereby making it possible to construct a system having doubled safety. The purpose is to provide a system.

1 is a configuration diagram of a PRT system driven by a conventional linear induction motor,

2 is a view for explaining a braking device applied to the method shown in FIG.

3a and 3b is a view for explaining a problem according to the driving method of the linear induction motor applied to the existing method,

4 is a view for explaining a problem in the branch drive in the branch line in the conventional method,

Figure 5 is a longitudinal sectional view showing the configuration of the PALTI system mounted on the vehicle floor with a linear induction motor according to the present invention;

Figure 6 is a longitudinal sectional view showing the brake portion of the PALTI system mounted on the vehicle floor with a linear induction motor according to the present invention;

7 is an operation state diagram showing the control state of the branch line in the system,

8A to 8C are cross-sectional views taken along lines A-A, B-B and C-C of FIG. 7,

9A and 9B are explanatory views for explaining a switching method in a branch line in the present invention.

* Code descriptions for the main parts of the drawings

10: guide wall 11a, 11b: auxiliary rail

80: linear induction motor 81: motor drive member

82: reaction rail 90a, 90b: guide wheel

91a, 91b: guide rail 92a, 92b: support shaft

100a, 100b: branch device 101a, 101b: branch electromagnet

102a, 102b: branch rail 110a, 110b: braking device

111a, 111b: fixing bar 112a, 112b: brake plate

113a, 113b: movable bar 120a, 120b: branch auxiliary wheel

121: drive bar

The PALTI system equipped with the linear induction motor according to the present invention as described above is mounted on the floor of the vehicle in the PALTI system in which the vehicle is seated and driven in the guideway wall, the upper portion of which is opened to form a rectangular space. A linear induction motor having a motor driving member and a reaction rail attached to a bottom of the guide path wall corresponding to the motor driving member; And a pair of left and right branch rails attached to an upper portion of the guide path wall and left and right sides of the vehicle body of the vehicle corresponding to the branch rails, and which one side is magnetized to change from a branch point to a desired line. It includes a branch device having a branch rail and a branch electromagnet generating magnetic attraction.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is a longitudinal sectional view showing the configuration of the PALTI system equipped with a linear induction motor according to the present invention, Figure 6 is a brake portion of the PALTI system equipped with a linear induction motor according to the present invention It is a longitudinal cross-sectional view shown.

As shown in the drawing, the guide path wall 10 is opened upward and has a substantially rectangular space portion therein. In particular, the guide path wall 10 has its open upper end bent inward to be used as auxiliary rails 11a and 11b. In the space part, the vehicle body 20 is seated. The main wheels 22a and 22b are formed under the main frame 21 of the vehicle body 20, and the motor driving member 81 is fixed to the bottom part. . The motor driving member 81 is mounted directly to the bottom of the main frame 21, and a corresponding reaction rail 82 is provided on the bottom of the guide path wall 10 opposite thereto. As a result, the reaction rail 82 and the motor driving member 81 react to obtain a driving force of the vehicle. In this way, the motor driving member 81 and the reaction rail 82 which obtain the driving force by the interaction constitute a linear induction motor 80. In the present invention, the linear induction motor 80 is composed of a pair of motor driving member 81 and the reaction rail 82, in particular the installation position is located on the floor of the vehicle. Therefore, the manufacturing cost can be reduced, as well as the structure is simplified and the vertical change is small, driving stability can be secured.

Particularly, in the present PALTI system, the pair of guide wheels 90a and 90b on the upper and left side of the main frame 21 and the guide path wall 10 corresponding to the upper part of the main frame 21 are used to smoothly run and to prevent shaking during driving. Guide rails 91a and 91b are provided at the side. The guide wheels 90a and 90b are attached to the left and right ends of the support shafts 92a and 92b arranged on the main frame 21.

The PALTI system is also provided with branching devices 100a and 100b, which are branching electromagnets 101a and 101b mounted on the upper and lower sides of the main frame 21, and the branching devices 100a and 100b. Corresponding to the configuration, branch rails 102a and 102b are housed in guide rails 91a and 91b. The branch rails 102a and 102b are made of soft iron, and guide the vehicle in a desired direction by magnetic attraction with the branch electromagnets 101a and 101b. That is, when the branch electromagnet 101a on the left side of the main frame 21 is activated and exhibits magnetism, the branch rail 102a and magnetic attraction are generated and branched toward the left rail from the branch point, on the contrary, the branch for When the electromagnet 101b becomes magnetic, the right branch rail 102b and magnetic attraction are generated to be guided to the right rail at the branch point.

The PALTI system is equipped with braking devices 110a and 110b to stop at a desired position when driving. The brake devices 110a and 110b attach brake plates 112a and 112b to both ends of the fixed bars 111a and 111b that are horizontally fixed to both upper sides of the main frame 21, and the movable bars 113a and 113b. The pair of facing brake plates 112a and 112b are contracted by the operation of the expansion drive. Therefore, the pair of brake plates 112a and 112b correspondingly stops the vehicle by the friction by pressing and holding both sides of the guide rails 91a and 91b attached to the guideway wall 10. .

Above the main frame 21 is further provided with a pair of left and right subsidiary wheels 120a and 120b. The branch auxiliary wheels 120a and 120b are fixed to both ends of the driving bar 121, and the driving bar 121 is integrated so that the other end is lowered when one end is raised. Accordingly, the branch auxiliary wheels 120a and 120b fixed to both ends of the driving bar 121 have the branch auxiliary wheels 120b fixed to the other end when the branch auxiliary wheels 120a of one side are raised. Will descend. The drive of the drive bar 121 is performed by a drive motor or actuator not shown. The branch auxiliary wheels 120a and 120b respectively correspond to the pair of auxiliary rails 11a and 11b bent downward at the upper end opening of the guide path wall 10 described above. Therefore, when driving to the left side, in addition to the magnetic attraction of the above-described branching apparatus 100a, the branch auxiliary wheel 120a on the left side is in close contact with the auxiliary rail 11a on the left side thereof and is caught and guided, thereby leaving the opposite side. Will be regulated. Of course, when driving to the right, on the contrary, the branching auxiliary wheel 120b on the right side is closely attached to the auxiliary rail 11b on the right side to be caught and guided to prevent the deviation to the opposite side. Detailed description thereof will be described later with reference to FIGS. 7 to 8.

7 is an operation state diagram showing a control state of a branch line in the present system, and FIGS. 8A to 8C are cross-sectional views taken along lines A-A, B-B and C-C of FIG. 7. Particularly, in FIG. 7, a vehicle is briefly illustrated in order to explain a branching method using a branching device, and the magnetized ones of the branch electromagnets provided on the left and right sides of the vehicle body are marked in black and the others are marked in white.

In order for the vehicle 2 to diverge from the branching point, the branching magnets 101a and 101b located in the direction to which the vehicle is going to go in a certain direction are magnetized and guided by the magnetic attraction with the branch rails 102a and 102b. It moves along the wall 10. When the vehicle 2 to go to the right track comes to a predetermined point (I point) of the branch point, the branch electromagnet 101b on the right side is magnetized to generate an attraction force with the branch rail 102b, so that the guide road wall 10 on the left side is generated. Will move along. Particularly, at the point I, the branch auxiliary wheel 120b on the right side of the pair of branch auxiliary wheels 120a and 120b provided on the upper portion of the main frame 21 is raised as shown in FIG. 8A. By the secondary rail (11b) is regulated to guide to the right track. Also, even at the point II, the vehicle 2 travels to the right in the guide wall 10 due to the attraction force of the branching electromagnet 101b on the right side as shown in FIG. 8B with the branch rail 102b on the right side. Done. Of course, even at this time, the branch auxiliary wheel 120b on the right side is regulated and moved on the right side auxiliary rail 11b to prevent the vehicle from being separated.

On the other hand, if you want to go to the left track, the branching electromagnet 101a on the left side is magnetized at point I. Accordingly, the branch electromagnet 101a on the left side generates magnetic attraction with the branch rail 11a on the left side as shown in FIG. 8C, and moves along the left side surface of the guide path wall 10. Particularly, at this time, the branch auxiliary wheels 120a on the left side of the branch auxiliary wheels 120a and 120b are raised to be regulated and guided to the left auxiliary rail 11a.

9A and 9B are explanatory views for explaining a switching method in a branch line in the present invention.

When branching to the left side as shown in FIG. 9A at the time of branching, the branching electromagnet 101a on the left side is magnetized and moves along the guide path wall 10 on the left side, and the branching electromagnet 101b on the right side is branched on the right side. The magnetization is performed along the guide path wall 10 on the right side.

Meanwhile, when the two tracks are merged, as shown in FIG. 9B, the vehicle coming from the left track moves along the left wall surface of the guide path wall 10 by magnetizing the branch electromagnet 101a on the left side, and the vehicle coming from the right track. In (2), the branch electromagnet 101b on the right side is self-rotating and travels along the wall of the guide road on the right side.

As described above, the PALTI system equipped with the linear induction motor according to the present invention is driven by mounting only one linear induction motor horizontally on the vehicle floor, compared to the conventional method using a pair of linear induction motors. Not only can the structure be simplified and lightweight, but the manufacturing cost can be reduced. In addition, due to the characteristics of the line, the vertical and horizontal bending is smoother than the horizontal bending. This device is installed horizontally induction motor horizontally, so that the space of the linear induction motor can be kept constant compared to the installation on the left and right, stable It has the advantage of securing driving force.

In addition, the present invention can suppress the deviation of the line to the branch auxiliary wheels mounted even when the branch device breaks down during branching, it is possible to promote safe driving. In addition, since the branch rail is housed in the guide rail, the size can be reduced, and the branch rail is installed only in the branch section and does not need to be installed over the entire section, thereby reducing the installation cost and having economic advantages.

In addition, the present system has the effect of reducing the size of the brake rail by storing the branch rail in the guide rail, as well as reducing the size and weight of the brake plates that hold and brake the brake to facilitate installation and easy maintenance. .

Claims (6)

In a PALTI system in which a vehicle is mounted and travels in a guide wall that opens at an upper portion to form a rectangular space portion, A linear induction motor having a motor driving member mounted on the bottom of the vehicle and a reaction rail attached to the bottom of the guide path wall corresponding to the motor driving member; And The pair of left and right branch rails attached to the upper part of the guide path wall and the left and right sides of the vehicle body of the vehicle corresponding to the branch rails are mounted on the left and right sides so that either side is magnetized to change from the branch point to the desired line. A PALTI system mounted on a vehicle floor with a linear induction motor including a branching device having a branching rail and a branching electromagnet generating magnetic attraction. A pair of auxiliary rails that are bent inwardly from an upper portion of the opening of the guideway wall and the auxiliary rails on the upper and left and right sides of the vehicle body to be in close contact with the auxiliary rail toward the desired track. PTI system equipped with a linear induction motor on the vehicle floor further comprising a pair of left and right subsidiary wheel for driving one side is driven up. The guide wheel of claim 1, further comprising a pair of left and right guide wheels mounted on an upper portion of the main frame of the vehicle and moving along the left and right side walls of the guide path wall and supporting the vehicle, and the guide road wall corresponding to the guide wheel. PALTI system equipped with a linear induction motor on the vehicle floor further comprising a guide rail attached. 4. The PALTI system according to claim 1 or 3, wherein the guide rail is formed in a substantially 'C' shape so that the branch rail is accommodated therein. The PTI system according to claim 4, wherein the branch rail accommodated in the guide rail is installed only in a branch section. 2. The PALTI system according to claim 1, further comprising a braking device for stopping the vehicle by gripping the upper and lower parts of the guide rail.