A power bogie of a 200 km / h low-floor motor train unit

Abstract

The utility model discloses a kind of 200 kilometers per hour low-floor motor train unit power bogies, belong to rail vehicle bogie technical field, the utility model includes framework, wheelset axlebox positioning device, secondary suspension device, central traction device, driving device, basic braking device, auxiliary device, axle end device;Wherein, central traction device is connected with car body by contact pillow beam, and adopts Z type traction pull rod to form;Framework is H type welded structure box body framework, framework is H type welded structure box body framework, brake seat is welded on the inside of framework side beam, on the top of beam two sides, for connecting basic braking device, framework longitudinal beam one end is connected with auxiliary device, the bogie of the utility model adopts the connecting mode of contact pillow beam and car body, simultaneously meet the low-floor requirement of train, vehicle gauge meets TSI specification, under the line condition of meeting TSI standard, vehicle dynamics meets EN14363 standard.

Description

Technical Field

[0001] This utility model relates to the field of railway vehicle bogie technology, and in particular to a power bogie for a low-floor EMU with a speed of 200 km / h. Background Technology

[0002] For rail vehicles to enter the EU market, they must pass the EU Rail Interoperability Technical Specification (TSI) certification. Obtaining EU recognition is essentially obtaining a passport for rail products to enter the EU market, which is highly beneficial for markets outside the EU. To meet TSI certification requirements, product design, manufacturing, testing, and verification must fully comply with European technical standards systems such as TSI, EN, UIC, IEC, and ISO.

[0003] Currently, the design, manufacturing, and testing of various types of high-speed trains operating in China are based on GB and TB standards, which do not meet TSI certification and therefore cannot be imported into the European Union.

[0004] Therefore, it is necessary to develop a power bogie for a 200 km / h low-floor EMU that fully complies with European technical standards such as TSI, EN, UIC, IEC, and ISO, and meets European standard clearance and platform height requirements. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the existing technology and provide a power bogie for a low-floor EMU with a speed of 200 km / h, which is used to meet the European standard clearance and platform height requirements for low-floor car bogies and obtain TSI certification.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a power bogie for a low-floor EMU with a speed of 200 km / h, comprising:

[0008] The system includes a frame mounted on the wheelset axle box positioning device, a secondary suspension system mounted on the frame, a central traction device mounted on the secondary suspension system, and a drive unit installed between the frame and the wheelset axle box positioning device; it also includes...

[0009] The basic braking device is installed under the frame, and the axle end device is installed at the end of the axle to install the wheel set axle box positioning device;

[0010] The central traction device is connected to the car body via a connecting bolster beam and is composed of Z-shaped traction rods.

[0011] The frame is an H-shaped welded box frame. Brake seats are welded on the inner side of the frame side beams and above both sides of the cross beams to connect the foundation braking device. An auxiliary device is connected to one end of the frame longitudinal beam.

[0012] Furthermore, the brake seat, gearbox hanger, traction rod seat, motor seat, torsion bar seat, and swing arm positioning seat on the frame are all made of integral forgings.

[0013] Furthermore, the wheelset axle box positioning device adopts a swing arm structure.

[0014] Furthermore, the axle of the wheelset axle box positioning device is a hollow axle, the wheel is a straight web plate structure, and the bearing is an integral self-sealing roller bearing.

[0015] Furthermore, the anti-roll torsion bar of the secondary suspension system adopts an integral torsion bar structure, and the torsion bar of the anti-roll torsion bar is connected to the frame through an adjustable link.

[0016] Furthermore, the connecting pillow beams are all made of cast aluminum, and the connecting pillow beams serve as additional air chambers for the air springs.

[0017] Furthermore, the basic braking device adopts a disc brake method with four-point suspension installation. The braking unit can have a parking function, and the braking unit with parking function is equipped with a manual release line.

[0018] In the above technical solution, the present invention provides a power bogie for a low-floor EMU with a speed of 200 km / h, which has the following advantages:

[0019] The bogie adopts a connection method between the bolster beam and the car body, while meeting the requirements for a low floor of the train. The vehicle clearance meets the TSI specification, and the vehicle dynamic performance meets the EN14363 standard under the conditions of a line that meets the TSI standard. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the power bogie disclosed in this utility model;

[0022] Figure 2 This is a schematic diagram of the power steering frame structure disclosed in this utility model;

[0023] Figure 3 This is a schematic diagram of the power bogie wheelset axle box positioning device disclosed in this utility model;

[0024] Figure 4 This is a schematic diagram of the secondary suspension device of the power bogie disclosed in this utility model;

[0025] Figure 5 This is a schematic diagram of the central traction device of the power bogie disclosed in this utility model;

[0026] Figure 6 This is a schematic diagram of the power bogie drive device disclosed in this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the power bogie basic braking device disclosed in this utility model. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] See Figure 1 As shown;

[0030] The utility model relates to a power bogie for a low-floor EMU with a speed of 200 km / h, comprising a frame 1, a wheelset axle box positioning device 2, a secondary suspension device 3, a central traction device 4, a drive device 5, a basic braking device 6, an auxiliary device 7, and an axle end device 8.

[0031] The bogie is connected to the car body via the connecting bolster beam 4-1. The frame 1 adopts an H-type welded frame. The wheel set axle box positioning device 2 is a swing arm type axle box positioning device. The primary suspension device 2-5 adopts a parallel connection of double-circle helical steel springs and vertical dampers. The secondary suspension device 3 adopts a high-flexibility air spring 3-1, a secondary vertical damper 3-7, a lateral damper 3-4, a lateral buffer 3-3, and a single-sided anti-hunting damper 3-6. The central traction device 4 adopts a Z-type traction rod 4-3. The basic braking device 6 adopts a wheel disc braking method.

[0032] See Figure 2 As shown:

[0033] Frame 1 adopts an H-type welded frame, mainly composed of side beams 1-1 and 1-2, cross beam 1-3, and various hanging seats. Both the cross beams and side beams adopt steel plate welded box-type structures. The cross beams and side beams are welded together by variable cross-section connecting seats. The upper part of the cross beam 1-3 of frame 1 is set on the gearbox hanging seat 1-5, traction rod seat 1-6, motor seat 1-7. The outer side of the side beams 1-1 and 1-2 is set with torsion bar seat 1-8. The lower part of both ends of the side beams 1-1 and 1-2 is set with swing arm positioning seat 1-9. The inner surface of the side beams 1-1 and 1-2 is welded above the two sides of the cross beam 1-3 with brake seat 1-4. The basic braking device 5 is connected through the brake seat 1-4. The brake seat 1-4, gearbox hanging seat 1-5, traction rod seat 1-6, motor seat 1-7, torsion bar seat 1-8, and swing arm positioning seat 1-9 are all made of integral forging structure. By embedding the integral forging into the frame, the overall welding strength of the frame is improved.

[0034] See Figure 3 As shown:

[0035] The wheelset axle box positioning device 2 adopts a swing arm structure, including a wheel 2-1, an axle 2-2, a wheel brake disc 2-3, an axle box swing arm device 2-4, a primary suspension device 2-5, a primary vertical shock absorber 2-6, and a gearbox 2-7. The axle box device 2-4 integrates a primary suspension device mounting seat, and the primary rubber pad and steel spring assembly are installed on the primary suspension device mounting seat.

[0036] Axle 2-2 is a hollow axle, and wheel 2-1 has a straight web plate structure. The bearings are integral self-sealing roller bearings. The primary suspension system 2-5 consists of a helical steel spring assembly, rubber laminated springs, primary vertical stops, and a vertical hydraulic damper. The helical steel spring assembly consists of an inner and outer coil spring with opposite directions of rotation; the steel spring assembly is used to buffer wheel-rail impact vibration. The lower part of the spring assembly has rubber laminated springs, which mainly absorb relative motion and bending motion in the vertical and horizontal directions, and also absorb and mitigate high-frequency vibrations and provide insulation between frame 1 and the axle box. The spring assembly contains stops to prevent the springs from being crushed and to provide support in emergency situations. A primary hydraulic damper is installed between the front end of the axle box and frame 1 to absorb wheel-rail impact vibration energy; the damper contains a lifting stop for lifting the wheelset and bogie as a whole.

[0037] See Figure 4 As shown:

[0038] The secondary suspension device 3 includes an air spring 3-1, an anti-roll torsion bar assembly 3-2, a lateral buffer 3-3, a lateral damper 3-4, an air spring control device 3-5, an anti-hunting damper 3-6, and a secondary vertical damper 3-7. These parts work together to complete the secondary suspension function of the bogie. The anti-roll torsion bar assembly 3-2 adopts an integral torsion bar structure, and the torsion bar is connected to the frame 1 through an adjustable link.

[0039] See Figure 5 As shown:

[0040] Each bogie is equipped with a central traction device 4, which adopts a "Z" type tie rod structure. The central traction device 4 includes a connecting bolster beam 4-1, a center pin 4-2, a traction tie rod assembly 4-3, and a traction beam assembly 4-4.

[0041] The connecting bolster beam 4-1 is a transitional connecting element between the bogie and the car body. It can transmit various forces and torques between the car body and the bogie, and can also be used as an additional air chamber for the air spring system. The connecting bolster beam 4-1 consists of the connecting bolster beam body, anti-hunting damper seat, anti-roll torsion bar seat, positioning pin, grounding seat, etc. The connecting bolster beam body and the anti-hunting damper seat are made of cast aluminum.

[0042] The upper end of the center pin 4-2 is bolted to the connecting bolster beam 4-1, and the lower end is embedded in the traction beam. The traction beam and the bogie are connected by two traction rods arranged in a "Z" shape. A center pin sleeve is fixed inside the traction beam. The center pin sleeve is a rubber-metal component. This structure eliminates the gap between the center pin, center pin sleeve, and traction beam, achieving gapless traction. The deformation of the rubber layer in the center pin sleeve can also accommodate the relative rotation between the car body and the bogie, thereby eliminating wear. The fit between the center pin, traction beam, and center pin sleeve is a metal-metal fit, eliminating the influence of rubber creep and ensuring stable performance.

[0043] See Figure 6 As shown:

[0044] The bogie drive unit 5 includes a gearbox 5-1, a coupling 5-2, and a traction motor 5-3. The traction motor 5-3 outputs torque, which is transmitted to the gearbox 5-1 through the coupling, and then transmitted to the wheelset through a first-stage reduction gearbox. The traction motor 5-3 adopts a flexible frame suspension and is fixed on the crossbeam of the bogie frame 1. The output torque and speed of the traction motor 5-3 are transmitted to the gearbox through the coupling, thereby driving the wheels and the vehicle.

[0045] See Figure 7 As shown:

[0046] The basic braking device 6 of the power bogie adopts a disc brake system. The brake calipers 6-1 are suspended at four points on the brake hangers of each power bogie, allowing for easy and complete free movement. The brake cylinder at the rear of the caliper is mounted on the brake cylinder hanger. Each brake caliper 6-1 contains two brake pad holders for mounting brake pads and enabling quick replacement when the brake pads wear. The braking unit may have a parking function, and the braking unit with the parking function is equipped with a manual brake release cable.

[0047] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A power bogie for a low-floor EMU with a speed of 200 km / h, characterized in that, include: The system includes a frame (1) mounted on the wheelset axle box positioning device (2), a secondary suspension device (3) mounted on the frame (1), a central traction device (4) mounted on the secondary suspension device (3), and a drive device (5) mounted between the frame (1) and the wheelset axle box positioning device (2); it also includes... The basic braking device (6) is installed under the frame (1), and the axle end device (8) is installed at the axle end of the wheel set axle box positioning device (2). Among them, the central traction device (4) is connected to the car body through the connecting bolster beam (4-1) and is composed of Z-type traction rods (4-3). The frame (1) is an H-shaped welded box frame. Brake seats (1-4) are welded on the inner side of the side beams of the frame (1) and above both sides of the crossbeams (1-3) for connecting the foundation braking device (6). An auxiliary device (7) is connected to one end of the longitudinal beam of the frame (1).

2. The power bogie for a 200 km / h low-floor EMU according to claim 1, characterized in that: The brake seat (1-4), gearbox hanger (1-5), traction rod seat (1-6), motor seat (1-7), torsion bar seat (1-8), and swing arm positioning seat (1-9) on the frame (1) are all made of integral forging structure.

3. The power bogie for a 200 km / h low-floor EMU according to claim 1, characterized in that: The wheelset axle box positioning device (2) adopts a rotating arm structure.

4. A power bogie for a low-floor EMU with a speed of 200 km / h according to claim 1 or 3, characterized in that: The axle (2-2) of the wheelset axle box positioning device (2) is a hollow axle, the wheel (2-1) is a straight web plate structure, and the bearing is an integral self-sealing roller bearing.

5. The power bogie for a low-floor EMU with a speed of 200 km / h according to claim 1, characterized in that: The anti-roll torsion bar component (3-2) of the secondary suspension device (3) adopts an integral torsion bar structure. The torsion bar of the anti-roll torsion bar component (3-2) is connected to the frame (1) through an adjustable link.

6. The power bogie for a 200 km / h low-floor EMU according to claim 1, characterized in that: The connecting pillow beam (4-1) is made of cast aluminum, and the connecting pillow beam (4-1) serves as an additional air chamber for the air spring.

7. A power bogie for a low-floor EMU with a speed of 200 km / h according to claim 1, characterized in that: The basic braking device (6) adopts a disc brake method and is installed with four-point suspension. The braking unit can have a parking function, and the braking unit with parking function is equipped with a manual release line.

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