JPH03293904A - Method of increasing driving force of railway car - Google Patents

Abstract

PURPOSE:To enable high acceleration/deceleration operation and steep inclination operation by installing the primary side of a linear motor onto a track during a specific section and a reaction plate on the secondary side onto a car and operating both the primary side of the linear motor and the reaction plate on the secondary side as linear induction motors only when the car travels during the specific section. CONSTITUTION:The primary side 9 of a linear motor mounted onto a track and a reaction plate 10 on the secondary side of a linear motor set up to a trailer 4 are installed. When a car travels during the specific section, the position and speed of the car are detected, and the linear-motor primary side 9 on the track is supplied with power, in which voltage and frequency are controlled, so that the car can pass by a preset travelling pattern. A non-adhesion driving function by linear induction motors is added to the car besides adhesion travelling by a main motor 5, and driving force works as shown in the arrow. The reaction plate 10 is mounted on a loading device 13 crossed over two pairs of wheels 7 in the same truck. Accordingly, the increasing method of the driving force can be introduced by comparatively slight remodeling.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to an iron 4, which is propelled by adhesion between wheels and rails.
This relates to a method for increasing the propulsion force of a railway vehicle equipped with a kidney-induction motor function.
This will be explained based on the diagram. Figure 5 shows an example of a general electric train, and Figure 6 shows the gear rail system used in steep slope sections. In Figures 5 and 6, l is the rail, 2 is the tooth rail, and 3 is the electric car, 4 is an accompanying vehicle, 5 is a main motor, 6 is a drive device, 7
is a wheel and 8 is a gear. If there are multiple identical devices, the number listed is the representative number.

In Fig. 4, an electric vehicle 3 and an accompanying vehicle 4 are placed on the rail l.
(hereinafter both will be collectively referred to as a vehicle) rides on it via wheels 7, and the structure is such that the rotational force generated by the main motor 5 of the electric vehicle 3 is transmitted to the wheels 7 through a drive device 6. Due to the adhesive force existing between the wheels 7 and the rails 1, the wheels 7 kick the rails 1 backward, and the electric vehicle 3 gains propulsion from the reaction force. A companion vehicle 4 without power is indexed by an electric vehicle 3 having a main motor 5. When braking is applied, a force acts to suppress the rotation of the wheels 7 of the vehicle, but the braking force obtained by the vehicle depends on the adhesive force between the wheels 7 and the rails 1.

In this way, both the propulsive force and braking force are limited by the adhesion between the wheels and the rails, so in steep slope sections that require large propulsive force and reliable braking force, there are no teeth on the track as shown in Figure 6. A rail 2 is installed, and a gear 8 that meshes with it is connected to an electric vehicle 3.
A method is adopted in which it is installed on top and driven.

[Problem to be solved by the invention]

As mentioned above, in general vehicles, the action of power depends on the adhesive force between the rails and wheels, so if the rotational force of the wheels exceeds the adhesive force, the wheels will spin, resulting in high propulsive force and braking force. Therefore, it was difficult to obtain acceleration or deceleration above a certain level. Also, regarding the slope,
If it is unavoidable that the slope cannot be steeper than a certain value due to limited propulsive force and braking force, a complicated method using toothed tracks as shown in Figure 6 must be adopted. There wasn't.

[Means 2 for Solving the Problem] The present invention has been made in view of the above points, and the propulsive force and braking force are increased in locations where high acceleration/deceleration is required or where there is a steep slope. As a reinforcement method, the primary side of the linear motor is installed on the track of this specific section, and the secondary side reaction grating is installed on the vehicle, so that the linear induction motor works on both sides only when the vehicle is traveling in the specific section. By doing so, the propulsive force or braking force is increased.

In other words, in steady sections, the conventional electric motor is used as the power source to run using the adhesion of the wheels and rails, and in particular sections characterized by acceleration and deceleration forces, the adhesion is utilized. By adding linear induction and motor functions in addition to running, it is possible to provide an exceptional device with large propulsive force and braking force.

〔Example〕

FIG. 1 shows running conditions in a specific section using the propulsion force enhancement method according to the present invention, where 9 shows the primary side of the near motor installed on the track, and 10 shows the secondary side of the near motor installed on the accompanying vehicle 4. This is the reaction plate on the side. When traveling in this specific section, the position and speed of the vehicle are detected, and the voltage and frequency are controlled to be supplied to the next side 9 of the linear motor on the track so that the vehicle can pass according to a preset travel pattern. supply.

In addition to sticky running by the main electric motor 5, the vehicle has a non-stick moving function by a linear induction motor, and the propulsion force acts as shown by the arrow in the figure.

Figures 2 and 3 show details of the bogie portion on which the secondary reaction plate 10 is mounted in Figure 1.
11 is a sleeper, 12 is a bearing, 13 is a mounting device, 14 is an axle spring, and 15 is a truck frame. Devices with the same reference numerals as in FIGS. 4 and 5 indicate parts having the same functions.

Wheels 7 mounted on rails 1 support the vehicle body via bearings 12, shaft springs 14, and bogie frame 15, and linear motor next side 9 installed on sleepers 11 is connected to reaction plate 10 and linear induction installed on the bogie. Since the gap between the two motors must be kept constant, the reaction grate 10 is attached to a mounting device 13 that is connected to two sets of wheels 7 in the same truck. According to such a method, this propulsion force enhancement method can be introduced to a conventional vehicle with relatively minor modification.

〔Effect of the invention〕

As explained above, according to the present invention, high acceleration/deceleration operation and steep gradient operation can be performed on a railway, and furthermore, it is possible to do this with relatively minor modifications to an existing railway.

FIG. 4 compares before and after the adoption of the propulsion assist system according to the present invention, where a', b', and C' represent the deceleration distance, acceleration distance, and steepest gradient according to the present invention;

b and c represent the deceleration distance, acceleration distance, and steepest slope of the conventional method.

As can be seen in the figure, it is clear that the distance of deceleration and acceleration is shortened and the steepest gradient is increased, which leads to shorter travel times and shorter driving intervals, and has the effect of increasing transportation capacity on commuter routes in large cities. Not only is this promising, but it is also effective in reducing construction costs by shortening the distance of new slope lines when installing new slope lines through grade-level intersections and dam construction.

In addition, when designing a new car using this method, there is no need to increase the rotational force at low speeds or between slopes, so equipment such as the traction motor can be made smaller and lighter.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the propulsive force enhancement method according to the present invention, Figure 2
Figure 3 is a detailed view of the vicinity of the truck mounted with the reaction plate shown in Figure 1, Figure 4 is a comparison view before and after implementation of the present invention,
FIG. 5 shows an example of a conventional vehicle, and FIG. 6 shows an example of a toothed rail system. 1...Rail, 2...Toothed rail, 3...
...Electric vehicle, 4...Accompanying vehicle, 5...
Main motor, 6... Drive device, 7... Wheels, 8... Gears, 9... Linear motor next side, 10... Reakshi, plate, 11
...Sleeper, 12...Bearing, 13...
...Mounting device, 14...Axis spring, 15...
...bogie frame, S...station, a, ml...
...Deceleration distance, h, b'...Acceleration distance, e
, C'... Steepest slope. Aguchi 2nd figure, Akira 3rd figure/,ri

Claims (1)

[Claims] In railway vehicles that have power installed on the vehicle and are propelled by adhesion between wheels and rails, the primary side of the linear motor is installed on the track in a specific section, and the reaction plate of the secondary side of the linear motor is installed on the vehicle. A method for increasing the propulsive force of a railway vehicle, characterized by adding a linear induction motor function in addition to sticky running only in a section to increase the propulsive force or braking force.