KR20130057379A - A structure helping the regenenative brake of an electric rail car - Google Patents

Abstract

PURPOSE: A structure helping regenerative braking of a motor is provided to increase an energy recovery rate by supplying generated electricity to a running motor car in a short distance. CONSTITUTION: A bush is rotated by rotating of an electric motor when braking. Width of a spring plate spring(52) is widely formed and thickness of a spring plate spring is thinly formed. A weight(55) is moved up and down by rotation of a chain gear. A large gear(50) and a small gear are rotated by force of unrolling. The force is generated by releasing of a locking unit when starting a motor car.

Description

A structure helping the regenenative brake of an electric rail car}

Figure 1, when the electric vehicle brakes power generation, the electric power generated by the generator of the electric vehicle is supplied to the electric motor installed on the ground, so that power is stored in the spring-loaded composite leaf spring and the weight is lifted by the chain while the electric vehicle is braked. Cross section shown structure

Figure 2 is composed of a spring shape, the thickness of the leaf spring of the inner surface of the leaf spring is small, the thickness of the leaf spring is compounded in multiple layers and the thickness of the leaf spring is gradually thickened by decreasing the number of leaf springs Section showing the structure formed

Figure 3 is a cross-sectional view showing a planetary gear structure in the inner diameter while the thickness of the inner spring and outer diameter of the self-winding composite leaf spring is constant.

Figure 4 is a plan view from above showing a structure in which the curved leaf spring is arranged in parallel on both sides of the rail to increase or decrease the power storage amount of the leaf spring according to the gravity of the train and the number of passengers.

FIG. 5 shows that when braking is started before the electric vehicle (train) of FIG. 4 enters history, electricity of the electric vehicle is stopped and power is supplied to the motor on the ground side of the rail while the electric motor is switched to the generator and the power is braked. Side sectional view showing a structure in which power is stored as the curved leaf spring is contracted by two motors at both ends.

Figure 6 is a plan view showing a state in which power is stored by the electric motor is braked in power generation by the two motors the curved leaf springs arranged in four rows arranged in a fixed position.

FIG. 7 is a side sectional view seen from the side of FIG. 6; FIG.

Figure 8 is a side cross-sectional view of the curved leaf spring before it is stretched before the power is stored and the spring rail including the spring case so that the spring does not escape.

9 shows that the compressed panel is in contact with the rear lap 136 of the electric vehicle in a state in which one end of the curved leaf spring is fixed to the spring base and the curved leaf spring is contracted by the compression panel after the electric vehicle is braked. Side sectional view showing the starting of an electric car.

Description of the Related Art

45; horizontal axis 46; slide key 47; bush

48; clutch 49; stator 50; large gear

51; small gear 52; self-winding leaf spring 54; chain gear

55; weight 56; protrusion 57; chain

58; limit switch 60; electric motor 70; spring case

71; anchor point 72; latch gear 73; stretcher bracket

80; composite leaf spring 81; ring gear 82; prenut gear

83; Sun gear 100; No. 1 curved leaf spring 101; spring roller

102; spring rail 103; spring case 104; 1 spring chain

105; 1 chain gear 106; clutch 107; spring base.

108; One-spring compression panel 113; 1 gear gear 120; large gear

122,123; electric motor 125; small gear 126,127; motor shaft

128; pit 130; rail 131; train (train)

132; electric car wheel 133; power line 134; terminal

136; rear opening of the vehicle 200; Curve 2 leaf spring 204; 2-spring chain

205; Two-chain gear 207; chain shaft 208; 2-spring compression panel

213; 2 latch gears

In order to get on and off the passengers at the platform, the electric vehicle, which is the transportation means of the city, usually has power braking and braking by pneumatic pressure before braking the electric vehicle before entering the platform.

To recover the acceleration power dissipated during braking by the electric vehicle running to get on and off the passengers, the electric motor is converted into a generator and the electric power generated while braking transmits electric power to the electric vehicle running in the near distance.

If there is no electric car running in the near distance, brake braking is performed and the acceleration power is lost and heat is generated.

We are developing an energy storage system using a DC1,500V supercapacitor, but the energy recovery rate is not high.

In the present invention, when the electric vehicle brakes power generation, the electric power is supplied to the electric motor provided on the railroad side to store power in the composite leaf spring, and when the electric vehicle starts, the electric motor is converted into a generator and the stored power is again Electric power is supplied to electric vehicles to generate electric power, which enables regenerative braking of electric vehicles.

In power trains or trains, power generation braking before entering the platform for getting on and off passengers is carried out by the composite leaf springs arranged on both sides of the tracks being deformed by the motor and stored as power.

The structure that assists the regenerative braking of the train is applied to the spring-loaded composite leaf spring shown in Figures 1, 2, and 3 when the platform is on the ground, and the motor is braked because the weight is raised to the ground by laying the power shaft on the ground. This saves power.

Another type of regenerative braking structure for electric vehicles is that of autonomous composite leaf springs.

The self-winding composite leaf spring and the self-curved composite leaf spring overlap a plurality of layers by thinning the thickness of the leaf spring to increase the efficiency.

As the thickness of the leaf spring becomes thinner, the elastic modulus becomes higher (thickness and elastic modulus are inversely proportional).

The spring-loaded composite leaf spring determines the amount of energy to store power while maintaining the stability and precision of the spring, depending on the width, the diameter of the circumference, and the number of composites.

Curved leaf springs combine the length and thickness between the width and the bend to determine the amount of energy to store power while maintaining the stability and precision of the spring.

When the electric vehicle brakes power generation, the generated electric power is transmitted to the electric motors 122 and 123 to store power in the curved leaf spring by the electric motor, and when the electric vehicle starts after the passenger rides, the electric motor curves regardless of the electric motor. Since the compression panel of the leaf spring is connected to the breaker of the electric vehicle and pushed, the power is output directly to increase the efficiency.

In order to increase the efficiency of another regenerative braking, the brakes are directly connected to the curved plate springs and the laps of the trains during braking, and the direct connection at start-up can increase the efficiency of regenerative braking up to 70%. Expect to be.

In order to realize the regenerative braking rate up to 70% at the time of braking, the impact occurs when the curved plate spring and the fastener have a high speed, and thus the impact is generated. The simple structure of the brake makes it possible to brake the high-speed train smoothly.

Normally, electric cars are driven by electric motors because they supply electric power to motors built on wheels of trains.

The power structure of another train that runs on national railways runs a train because a diesel engine generates power to drive a generator and drives a motor with generated power.

An electric motor and a composite leaf spring are arranged to store the acceleration force that is lost when braking before entering the platform of the electric vehicle and the diesel train as power.

The composite plate spring is installed with the motor on the ground structure to store the power by the spring-loaded composite plate spring and the height that can be raised on the ground, or may store the power by arranging the autonomic curve leaf spring long.

(When the self-winding composite leaf spring and the autonomic curved composite leaf spring are commonly used for convenience, they are called leaf springs.)

Since the curved leaf spring is long in length and heavy in weight, the spring roller supports the spring at regular distances.

The spring formed with the spring roller does not move away from the spring case formed on the spring rail is linear movement.

The structure for assisting the regenerative braking of the electric vehicle of the present invention is the first embodiment showing the structure of the power storage by the spring and leaf spring and the second embodiment showing the structure of power storage by the curved leaf spring. .

<Example of First Embodiment>

A transverse shaft 45 arranged laterally at a height as high as possible in a suitable space on the side of the landing in FIG. 1, and a clutch 49 operated when power is input and power is output;

The electric shaft 59 and the small gear 51 and the large gear that rotate together with the rotation of the electric motor 60 on the ground by the electric power generated when the motor converts to the generator and brake power generation when braking the electric vehicle or train 50;

The rotation of the electric motor rotates with a considerably large difference in speed ratio between the small gear and the large gear in order to increase the rotation speed of rotation when inputting power or outputting power.

(In the structure of the present invention, when the electric vehicle brakes, it is called a power input and when the electric vehicle starts, it is called a power output.)

When the electric vehicle enters the platform and brakes, the electric motor is converted into a generator, and the electric power is generated, and when the electric power is transmitted to the electric motor 60 provided on the ground, the electric motor 59 rotates and the small gear ( 51) and the large gear 50, the lower the rotational speed of the bush 47, which is the central axis of the self-winding leaf spring 52 is rotated so that the self-winding leaf spring 52 is relatively slowly wound and braking.

The structure of the self-winding leaf spring 52 may be formed by thinning the thickness of the inner leaf spring of which the diameter is small and compounding a plurality of layers and increasing the thickness of the leaf spring as the diameter increases.

Also in the weight 55, the train brakes as the weight goes up while being wound on the chain 57.

The self-winding leaf spring 52 and the weight 55 may be input and output power because the clutches operate in different independent configurations, respectively.

The electric vehicle is braked to stop and at the same time restrain the latch gear 72 by the latch gear catcher 73, and the stator 49 is fixed by axially moving by the slide key 46 on the non-rotating transverse shaft 45 so that the stator 49 is fixed. Is fixed.

Since there are no power lines and terminals on railway lines, the power lines and terminals are provided as much as the braking distance of trains in the platform.

When the train departs after the passenger rides, the clutch-operated stator 49 is released, and the catcher 72 is released from the catcher catcher 73, so that the self-winding leaf spring 52 together with the bush 47 is Cold rotates in reverse.

One pinion can be added to match the direction of rotation at power input and output.

When the electric vehicle starts after the passenger rides, the electric motor 60 is switched to the generator and the rapid rotation of the large gear 50, the small gear 51 and the electric shaft 59 by the loosening force of the spring leaf 52. It regenerates electricity by regenerating electricity and supplying power to electric vehicles again.

The clutch operation (not shown) of the stator 49 may be applied to the structure of pneumatic, hydraulic or magnet.

In FIG. 2, the spring can be improved by distributing and tightening one of the self-winding leaf springs, which are compounded in multiple layers, on the outer circumferential surface of the bush 47 to which the inner diameter of the spring leaf spring 52 is fixed.

<Example of the second embodiment>

Arrange the curved leaf springs (100,200) in two or more rows in parallel on both sides of the track at a distance that can be braked before the train enters the platform.

The parallel arrangement of two or more rows saves a lot of power when the number of passengers is small and when the number of occupants is increased.

Power is stored in the number 1 curved plate spring 100 when the number of people riding normally, and the clutch 106 of the chain shaft 207 is operated when there are a large number of people in the rush hour and leaving time, so the number 1 and 2 curved plates Since power is input to the springs 100 and 200, the efficiency of regenerative braking is increased while reducing the loss of braking power.

A structure in which power is inputted in a curved leaf spring in which power is stored and thus contracted in an elongated direction;

On the contrary, it is possible to realize a structure in which power is input by extending the curved leaf spring in a contracted state.

In Figures 4 and 5 relates to the structure provided in the spring rail 102 and the spring case 103 in a state in which the curved leaf springs (100,200) are extended.

Figure 4 is a view from above showing the curved leaf springs are arranged in parallel on both sides of the railway.

One end of the curved leaf springs 100, 200 is always fixed to an independent spring base 107 irrespective of the spring chains 104, 204;

The other end of the curved leaf spring is compressed by spring compression panels 108 and 208 which are fastened to the spring chains 104 and 204, and are compressed by the rotation of the spring chains 104 and 204.

The structure of the spring compression panel is recessed in the spring case 103 together with the curved leaf spring 100 to maintain the balance by the four rollers and compress the curved leaf spring while moving freely.

When the electric vehicle brakes before entering the platform, the electric motor is converted into a generator, and the generated electric power rotates the electric motors 122 and 123 on the ground and rotates the motor shafts 126 and 127, the small gear 125 and the large gear 120. By the compression of the spring compression panel 108, which is integrally coupled with the spring chain 104, the number 1 curved plate spring 100 arranged on both sides of the railway is slowly compressed and braked.

The ratio of the small gear and the large gear is reduced, and a shift gear structure is provided to adjust the load of the electric vehicle.

The structure of the one-spring chain 104 is the one-chain gear 105 built on the chain shaft 207 at both ends of the number 1 curved plate spring 100 is built,

Since the curved leaf springs 100 and 200 are long and heavy, they are supported by the spring roller 101 and are stretched and stretched in the spring rail 102 and the spring case 103, and the power is output. The regenerative braking of the electric vehicle is performed.

Since the number of occupants increases during the rush hour and the rush hour, 2 arranged in parallel with the number 1 plate spring 100 by the operation of the clutch 106 arranged on the gear shaft 207 and the gear shaft 207 of the other end. As the curved leaf spring 200 is expanded and contracted at the same time, the electric vehicle is braked.

When the electric vehicle is stopped while the power is stored and the passenger starts, the spring compression panel 108 of the curved leaf spring, which is stretched in FIG. 7, pushes the rear switch 136 of the electric car and directly moves the curved leaf springs 100 and 200. Starting the electric train reduces power loss.

If the curved leaf spring is pushed directly when the electric vehicle starts to output power, the energy regeneration efficiency is increased and the wear of the train rail is reduced, so the life of the rail is long.

The structure of the curved leaf spring (100,200) is a structure for storing power while forcibly stretched in the state that the base is extended;

On the contrary, it can be configured to store power while forcibly elongating while the base of the curved leaf spring is stretched.

The structure of the electric vehicle is braking while the electric motor (122,123) on the ground by the electric motor (122,123) when the braking power generation when braking and braking and starting, regardless of the electric motor one-spring compression panel (108) Since the electric vehicle starts by pushing the rear patch 136 of the electric vehicle directly, the efficiency of the regenerative energy is high while the power loss is small.

The structure to help the regenerative braking of the electric vehicle of the present invention can be applied to the platform of the national railway track running by the electric motor because the generator operates in the diesel internal combustion engine,

It can be applied to electric cars running in the city,

If the power lines are arranged as much as the braking distance and acceleration distance in the route bus platform that operates the city, it can save energy, reduce railway wear and tire wear, and reduce dust generation and heat generation due to braking.

Claims (3)

A clutch unit configured to accumulate a horizontal shaft 45 at a high side of a landing space and operate at a power input and a power output to the shaft; An electric motor 60, an electric shaft 59, a small gear 51, and a large gear 50 that rotate by electric power generated when the motor converts into a generator and brakes power generation when braking an electric vehicle or a train; A bush 47 rotating by rotation of the electric motor 60 during braking; A bushing 47 that is distributedly fastened to an outer circumferential surface of the fixed point 71 and an inner end of which the outer end of the main leaf leaf spring 52 is fixed; An outer end is fixed to the fixing point 71 and the inner end is a spring leaf spring 52 is a plurality of leaf springs are distributedly coupled to the outer peripheral surface of the bush (47); The spring leaf wider 52 which is made wider in width and thinner in thickness in the leaf spring; The self-winding leaf spring 52 of which the diameter of the leaf spring of the inner diameter is small and the thickness of the leaf spring of the outer diameter of which the diameter is increased is thick; A weight 55 which moves up and down by rotation of the chain gear 54 which rotates together with the rotation of the bush 47; A clutch 48 and a latch gear catcher 73 and a latch gear 72 which are locked so that the spring leaf spring and the weight are not released after the electric vehicle is braked; A large gear 50 and a small gear 51 that rotate by a release force when the locking device is released when the electric vehicle starts; Rotating together to generate power and to help the regenerative braking of the electric car to convert the electric motor to the generator in order to transmit the generated electric power to the electric train. 2. The structure of claim 1, wherein the transverse shaft (45) rotates during braking to assist regenerative braking of the electric vehicle that is powered and locked by the stator after braking and unlocked at start. According to claim 1, Curved leaf springs (100,200) arranged in parallel to the left and right of the platform railroad tracks; A curved leaf spring having a plurality of spring rollers (101) formed to support the up and down and freely contracting and expanding the curved leaf spring having a long longitudinal direction; A spring rail 102 including a spring case 103 through which the spring roller 101 can move freely; A spring base 107 to which one end of the curved plate spring is fixed; The other end of the curved plate spring is a spring chain 104 including a compression panel 108 for compressing the leaf spring when braking; A chain gear 105 for rotating the spring chain 104 at positions of both ends of the curved leaf spring, and a large gear 120 and a small gear 125 for enabling high speed rotation of the electric motors 122 and 123; Electric motors (122,123) for rotating the spring chain 104, including a shift gear to reduce the speed of expansion and contraction of the curved leaf spring (100,200); The electric motors 122 and 123 that consume electric power generated while the electric motor of the electric vehicle is switched to a generator during braking to brake power generation; Clutch 106 that operates so that the operation of the two curved plate springs 200 arranged in parallel as the number of passengers can be increased at the same time; Chain shafts 207 at both ends of the chain gears 105 and 205; A locking device for the electric vehicle to prevent the brake and simultaneous spring from loosening; When the electric vehicle starts after the passenger rides, the compression panel 108 of the curved plate spring pushes the rear panel 136 of the electric vehicle directly, and the rear panel 136 of the electric vehicle starts to come into contact with the compression panel 108; A structure that assists regenerative braking of an electric vehicle, which is composed of a rear lap of the electric vehicle that is closed when the electric vehicle is accelerated significantly after departure.

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