RU2441785C2 - Motor bogie of high-speed railway vehicle - Google Patents

Abstract

FIELD: rail transport.

SUBSTANCE: each motor wheelpair includes an axis, single-stage axis gearbox, 2 axis pressed-on wheels, each of which has 2 brake disks and 2 axle boxes in the disk portion. Each axle box is equipped with a temperature sensor. There is a gear clutch with arch teeth linking gearbox with tractive motor. The frame consists of two lateral beams bent down by their middle portion, and one transversal beam interconnecting middle portions of the lateral beams. The lateral beams are provided with the fasteners for motor wheelpairs. A transversal beam is provided with the fasteners for two tractive electric motors and disk braking module for each wheel. There is a process opening in the middle portion of the transversal beam where lemniscal somatosensory elements can be allocated.

EFFECT: increase of railway vehicle speed, enhancement of sensing and transfer of traction and braking efforts.

4 cl, 6 dwg

Description

The invention relates to rail transport and can be used in the chassis of railway rolling stock, especially high-speed passenger transport.

Currently, due to the significantly increased speeds of rail transport, increased demands are placed on the trolleys, since the trolley is the main bearing unit of the car. It transfers the body weight, traction and braking forces developed by each wheelset. When the trolley moves along a straight or curved section of the path, it perceives the forces acting on the wheelsets when they interact with the rails in the vertical and horizontal planes.

The prior art motor bogies of rail vehicles (BIRYUKOV I.V. and others. The mechanical part of the traction rolling stock. - M .: Transport, 1992, p.365-385) used on electric locomotives and diesel locomotives, including passenger .

A disadvantage of the known technical solutions is the mismatch of their technical characteristics with the new requirements presented by modern railway transport to the nodes and parts of the rolling stock.

The closest technical solution can be considered a motor trolley, disclosed in US 4353309 A dated 12.10.1982, made with the possibility of placing traction drive elements, brake equipment and spring suspension on it and containing two motor wheelsets mounted on a frame including two longitudinal and two cross beams.

The disadvantages of the prototype, as in the previous case, include the mismatch of its technical characteristics with the new requirements presented by modern railway transport to the components and parts of the rolling stock, such as, for example, mass and dimensional indicators, the possibility of placing an additional and / or improved equipment, strength characteristics, etc.

The objective of the invention is the creation of a motor trolley that allows you to use it on high-speed passenger rail vehicles.

The technical result achieved by the implementation of the present invention consists in the possibility of increasing the speed mode of a railway vehicle by simultaneously reducing the mass of the trolley as a whole, increasing the efficiency of perception and transmission of traction and braking forces and by increasing the braking efficiency.

The specified technical result is achieved due to the fact that the motor carriage of a high-speed railway vehicle is made with the possibility of placing traction drive elements, brake equipment and spring suspension on it and contains two motor wheelsets mounted on the frame. New is that in the proposed motor trolley, each motor wheelset contains an axle, a single-stage axial gear, two wheels pressed onto the axle, each of which has two brake discs and two axle boxes on the disk part, each of which is equipped with a temperature sensor, while for coupling the said gearbox with the traction motor, a gear clutch with arc teeth is provided, the frame is formed by two longitudinal, curved middle part down, beams and one transverse beam connecting the middle parts the native beams between each other, and on the longitudinal beams there are fastening elements for motor wheelsets, on the transverse beam there are fastening elements for two traction motors and for disc braking equipment for each wheel, while a technological opening is made in the middle of the transverse beam, allowing the elements to be placed lemniscate mechanism.

In some cases, it may be advisable if the spring suspension is performed in two stages, while the second stage of the spring suspension will be made pneumatic.

In the most preferred embodiment, information from the temperature sensor of each axle box can be fed to the vehicle control panel.

The performance of the gearbox is single-stage with its fastening on the axle of the wheel pair and equipping it with fasteners to the frame of the railway carriage, as well as its connection with the traction motor through a gear clutch with arc teeth, can significantly increase the efficiency of torque transmission, reduce friction losses and increase the reliability of fastening elements leading to increased speed characteristics of the vehicle. However, it is known that an increase in the speed of vehicles, especially passenger ones, is possible only if the braking efficiency is increased, as required by safety measures during the transportation of passengers. To increase the braking efficiency, which will allow operating the rolling stock at a higher speed, it is proposed to use disc brakes instead of shoe brakes, while each wheel pressed onto the axle should have two brake discs on the disc part, which will increase the useful area of interaction between the brake elements and, accordingly, increase braking performance.

The implementation of the frame of the proposed form, with curved longitudinal beams and with only one transverse beam having a technological opening that allows you to place elements of the lemniscate mechanism, reduces the mass of the frame, helps to reduce the resistance of the incoming flow during movement, improves the perception and transmission of traction and braking forces . The presence of additional fastening elements allows the use of disc braking equipment. All of the above allows you to increase the speed mode of a railway vehicle.

To increase the efficiency of perception and transmission of traction and braking forces, as well as to increase comfort, the spring suspension of the frame can be performed in two stages, while the second stage of the spring suspension can be made pneumatic.

Further, the invention will be disclosed in more detail, with reference to graphic materials on which:

- figure 1 is a schematic diagram of the proposed trolley, top view,

- figure 2 is a schematic diagram of the proposed trolley, side view,

- figure 3 is a schematic diagram of a motor wheelset,

- figure 4 is a schematic diagram of a frame, a top view,

- figure 5 is a schematic diagram of a frame, side view,

- Fig.6 is a three-dimensional image of the frame (inverted 180 °).

The trolley described in the framework of this application will be used on a high-speed passenger railway vehicle, for the convenience of use and maintenance of which it is assumed that all the trolleys will have a modular design. The main components, as far as possible, in motor and non-motor carts will be performed identically.

The proposed motor carriage 1 of a high-speed railway vehicle is made with the possibility of placing traction drive elements, brake equipment and spring suspension on it and contains two motor wheel sets 2 mounted on the frame.

A motor pair of wheels consists of an axis 3, two axle boxes, two wheels 4, two brake discs 5 and 6, on the disk part 7 of each wheel 4 and one axial single-stage gearbox 8.

Brake discs 5 and 6, mounted on the disk part 7 of each wheel 4, make it possible to increase the area of frictional contact during braking, reduce dynamic and temperature loads on the wheels 4 and elements of the brake system, and more effectively distribute and use braking forces, significantly reducing the stopping distance of the rail vehicle.

Each axle box unit is equipped with a temperature sensor (not shown), information from which can be transmitted in real time to the control panel of the rail vehicle, which allows constant monitoring and regulation of brake and acceleration processes.

To transmit the torque of the traction motor 9 to the axial single-stage gearbox 8, a gear clutch 10 with arc teeth is provided. The proposed technical solution improves the transmission of torque by increasing the efficiency of the gear transmission and reducing friction losses.

The details of the axial single-stage gearbox 8 — the labyrinth ring, the bearing, the gear wheel — are pressed or mounted hot in separate seats on the gearbox 8 mentioned.

Wheels 4 are pressed onto the axle 3 by means of a cold seat.

Before fitting the wheels 4 and the gears of the axial single-stage gearbox 8, the surfaces of the mounting holes and the seats of the axis 3 are covered with a smooth layer of lubricant that ensures electrical conductivity of the landing and does not reduce the fatigue strength of the axis 3.

The open surface of the axle 3 and the wheels 4 is coated with a primer and then with a topcoat. This coating protects surfaces from corrosion.

The frame 11 of the motor carriage 1 is formed by two longitudinal beams 12 and one transverse beam 13.

Each longitudinal beam 12 is curved with the middle part 14 down.

The transverse beam 13 connects the middle parts 14 of the longitudinal beams 12 with each other.

The use of one transverse beam of sufficient rigidity in the proposed design (instead of two - as in the known constructions) allows to reduce the mass of the frame and significantly optimize the distribution of traction and braking forces that arise during the movement of a railway vehicle. The characteristic external shape of the frame, obtained by bending the longitudinal beams, also helps optimize the distribution of traction and braking forces and, in addition, leads to a decrease in aerodynamic drag.

On the longitudinal beams 12, fastening elements 15 are provided, for example, brackets, for two motor wheelsets.

On the transverse beam 13, fastening elements 16 are provided, for example, brackets for two traction motors 9 and fastening elements for disk brake equipment 17 for each wheel 4.

The ability to use disc brakes for each wheel significantly increases braking performance, which allows the use of the proposed carts on high-speed passenger railway vehicles.

In the middle part of the transverse beam 13, a technological opening 18 is made, which allows placing elements of the lemniscate mechanism.

The implementation of the technological opening allows, on the one hand, to increase the rigidity of the frame and to optimize the distribution of traction and braking forces, and on the other hand, to reduce the mass-dimensional parameters of the frame, optimize the layout of the components and parts of the motor carriage and increase its aerodynamic characteristics.

At the ends of the longitudinal beams 12, places 19 are provided for mounting the springs 20 of the first spring suspension stage.

Secondary vertical suspension is made using air springs 21. Air cushioning on each trolley consists of two systems of air springs. Directly connected to the air springs is an additional reservoir of compressed air, which is mounted on top of the trolley on the traverse of the car body. The adjustment of the level of the second stage of cushioning to equalize various loading states is carried out by the air spring control device.

To increase the resistance to lateral rolling, lateral rolling stops are provided.

In case of air spring failure, the wagon body may fall onto the emergency springs, while movement with a speed limit of up to 120 km / h is possible.

Performing a two-stage spring suspension allows for more efficient perception and transmission of traction and braking forces, as well as improving the ergonomic characteristics of high-speed passenger rail vehicles.

Due to the different adaptation of the trolleys to the mass and position of the center of gravity of individual wagons, as well as the result of different settings for suspension of the trolleys without changes, the settings are interchangeable only within wagons of the same type.

Carts on head cars can be equipped with rail cleaners made of elastomeric materials mounted in front of the wheels. The latter are located as close to the wheels as possible and have the smallest possible distance to the rail head.

Thus, the proposed design and layout of the inventive motor carriage allow it to be used on high-speed passenger rail vehicles by simultaneously reducing the mass of the frame, increasing the efficiency of perception and transmission of traction and braking forces, as well as by increasing braking efficiency and increasing ergonomic characteristics.

Claims (4)

1. Motor carriage of a high-speed railway vehicle, made with the possibility of placing traction drive elements, brake equipment and spring suspension on it and containing two motor wheelsets mounted on a frame, characterized in that each motor wheelset contains an axis, a single-stage axial gearbox, two wheels pressed onto the axle, each of which has two brake discs and two axle boxes on the disk part, each of which is equipped with a temperature sensor, at For connecting the said gearbox with the traction motor, a gear clutch with arc teeth is provided, the frame is formed by two longitudinal, curved middle part downwards beams and one transverse beam connecting the middle parts of the longitudinal beams to each other, and fastening elements for motor wheelsets are provided on the longitudinal beams, fastening elements for two traction electric motors and for disk brake equipment for each wheel are provided on the transverse beam, while in the middle of the transverse ba Ki made a technological opening, allowing to place elements lemniskatnogo mechanism. 2. The trolley according to claim 1, characterized in that the spring suspension is made in two stages. 3. The trolley according to claim 2, characterized in that the second stage of spring suspension is made pneumatic. 4. The trolley according to claim 1, characterized in that the information from the temperature sensor of each axle box is fed to the vehicle control panel.

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