RU2454342C2 - High speed railway vehicle non-motored bogie - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to railway transport. Non-motored bogie accommodates braking system components and spring suspension elements and comprises two non-motored mounted axles arranged on bogie frame. Every non-motored mounted axle comprises axle, two wheels fitted thereon, brake disk fitted on said axle and two extra brake disks arranged on both bodes of the former at equal distance therefrom. Hubs of all brake disks are fitted on axle. Working part of every said disk is fastened to said hub. Vent channels made up of cooling ribs are made in working section of every disk. Said frame is made up of two lengthwise beams with their centers curved downward and one crosswise beam jointing said centers together. Mounted axle fasteners are arranged on said lengthwise beams. Crosswise beam is furnished with brake disk fasteners. Note here that three said fasteners are arranged on both sides of said beam. Lemniscate mechanism elements are arranged in opening made at crosswise beam center.

EFFECT: higher speed.

3 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 non-motorized bogies of rail vehicles (Biryukov I.V. et al. The mechanical part of traction rolling stock. - M .: Transport, 1992, pp. 355-385) used on electric locomotives and diesel locomotives, including passenger ones, are known from the prior art.

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 components and parts of the rolling stock, such as, for example, weight and size indicators, the possibility of placing additional and / or improved equipment, strength characteristics, etc.

The objective of the invention is the creation of a non-motorized trolley, allowing its use in high-speed passenger railway 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 non-motorized trolley of a high-speed railway vehicle is made with the possibility of placing elements of brake equipment and spring suspension on it and contains two non-motorized wheel pairs mounted on the frame. What is new is that in the proposed trolley, each non-motorized wheelset contains an axis, two wheels pressed onto the axis of the wheel, as well as a main brake disk mounted on the axis and two additional brake discs placed on both sides of the main brake disk at equal distances from it, the hubs of all brake discs are pressed onto the axle, the working part of each brake disc is removably attached to the hub using fasteners and ventilation ducts are provided in the working part of each brake disc, brazed by cooling fins, 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 on the longitudinal beams there are fasteners for two wheel pairs, fasteners for disk brake equipment are provided on the transverse beam moreover, on each side of the transverse beam at an equal distance from each other are located three of these elements, and in the middle of the transverse beam is made technologically s opening, allowing to place elements lemniskatnogo mechanism.

Equipping a non-motorized wheel pair with three ventilated brake discs located at an equal distance from each other allows optimizing the braking processes, increasing the braking efficiency and improving the cooling of the brake parts.

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 carts, top view;

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

- figure 3 is a schematic diagram of a non-motorized 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 non-motor and motor trolleys will be identical.

The proposed non-motorized carriage 1 of a high-speed railway vehicle is arranged to accommodate elements of brake equipment and spring suspension and contains two non-motorized wheel pairs 2 mounted on the frame.

Non-motor wheelset consists of an axis 3, two wheels 4, the main brake disc 5 and two additional brake discs 6 and 7.

Additional brake discs 6 and 7 are installed on both sides of the main brake disc 5 at equal distances "a" from it.

The hubs of all brake discs are pressed onto the axle. The working part of each brake disc is removably attached to the hub using fasteners. The working part of each brake disc has two brake planes, heat removal from which is effectively carried out through ventilation ducts formed by cooling fins.

Removing the brake discs into the space between the wheels 4 and arranging them at an equal distance from each other can reduce the dynamic and temperature loads on the wheels 4 and the elements of the braking system 8 and more efficiently distribute and use braking forces, significantly reducing the braking distance of the rail vehicle.

The wheels 4 are pressed onto the axle 3 by means of a cold press fit. Before fitting the wheels 4 and brake discs, the surfaces of the mounting holes and the seats of the axis 3 are covered with an even layer of lubricant, which 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.

Each axle box wheel assembly can be 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 will allow for constant monitoring and regulation of brake and acceleration processes.

The frame 9 of a non-motorized carriage 1 of a high-speed railway vehicle is formed by two longitudinal beams 10 and one transverse beam 11.

Each longitudinal beam 10 is curved with the middle part 12 down.

The transverse beam 11 connects the middle parts 12 of the longitudinal beams 10 with each other.

The use in the proposed design of one transverse beam of sufficient rigidity (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 occur during the movement of a high-speed 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 10, fastening elements 13 are provided, for example brackets, for two wheelsets.

On the transverse beam 11, fastening elements 14, for example brackets, are provided for the elements 8 of the disc braking equipment of each non-motor wheel pair.

The possibility of using disc brakes for each non-motor wheelset significantly increases braking performance, which allows the proposed carts to be used on high-speed passenger railway vehicles.

In the middle part of the transverse beam 11, a technological aperture 15 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 optimize the distribution of traction and braking forces, and on the other hand, to reduce the overall dimensions of the frame, optimize the layout of the components and components of a non-motorized carriage and increase its aerodynamic characteristics.

At the ends of the longitudinal beams 10, there are places 16 for installing the springs 17 of the first stage of spring suspension.

Secondary vertical suspension is made using air springs 18.

The 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.

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

Claims (3)

1. Non-motorized trolley of a high-speed railway vehicle, made with the possibility of placing elements of brake equipment and spring suspension on it and containing two non-motor wheelsets mounted on a frame, characterized in that each non-motor wheelset contains an axle, two wheels pressed onto the axle, and also mounted on the axis of the main brake disc and two additional brake discs located on both sides of the main brake disc at equal distances from it, at m the hubs of all brake discs are pressed onto the axle, the working part of each brake disc is removably attached to the hub using fasteners and ventilation channels formed by cooling fins are provided in the working part of each brake disc, the frame is formed by two longitudinal, curved middle part downward beams and one transverse a beam connecting the middle parts of the longitudinal beams with each other, and on the longitudinal beams are provided fasteners for two wheelsets, on the transverse beam are provided lementy mounting for a disk brake equipment, wherein on each side of the transverse beam at an equal distance from each other is disposed on three of said element, and in the middle of the transverse girder is made technological opening, which allows placing 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.

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