MindMap Gallery Bogie outline
This is a mind map about bogies. The main contents include: bogie overview, common urban rail transit vehicle bogies, traction connection devices and driving devices, frames, spring damping devices, and wheel-to-axle box devices.
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bogie
Bogie overview
Main functions of bogie
1. Support the car body and transfer load
2. Make the vehicle pass the curve smoothly
3.Transmit traction and power
4. Ease the impact, ensure the safety of vehicle operation, and improve ride comfort
Basic requirements for bogies
The bogie is an independent component of the vehicle. There should be as few connecting parts as possible between the bogie and the vehicle model to facilitate disassembly and repair.
For motor vehicle bogies, a traction motor transmission device is installed to provide power to drive the vehicle.
Convenient installation of spring damping elements to meet their smoothness requirements
Main structure of bogie
Frame, wheel set, wheel box device, spring shock absorber device, traction drive device, traction connection device, braking device, auxiliary device, etc.
Overall layout of bogie
Main technical parameters of bogie
Architecture
Architectural role and design requirements
Architectural main functions
1. Transmit traction, braking force and carry the weight of the vehicle body.
2. Install bogie components and related systems.
3. Install the suspension gearbox.
4. Install the motor.
5. Install the basic braking unit.
Architecture type
According to the manufacturing process, it is divided into cast steel frame and welded frame.
According to the structural form, it is divided into open type, closed type, H type, Japanese type, eye type, etc.
Architecture composition
Two side beams and one middle cross beam are welded into a bolsterless or h structure.
Made of low-alloy high-strength steel plate
The welding of the structure is carried out in accordance with the requirements of the din6700 welding system.
The motor vehicle bogie frame and the trailer bogie frame are completely interchangeable
Wheel to axle box device
Wheel
Wheelset technical parameters
Wheelset composition
Made up of axles and wheels
wheelset effect
1. Guide the vehicle to run safely along the track
2. Bear the weight of the vehicle body
3.Transmit adhesive braking force and traction force to the vehicle
Wheelset requirements
Axle box device
1. Axle box
2.Bearings
3. Main functions of axle box device
Its main function is to support the vehicle transmission system and ensure the normal driving of the vehicle.
4. Accessories
Spring shock absorber
A series of suspension devices
Function:
Supports the weight of the vehicle above the wheelset.
Transmit traction and braking force.
Cushions the impact of traction and braking forces.
Support structure and body weight
Second series suspension device
Function:
Support the weight of the car body.
Reduce vibration, avoid resonance, and improve vehicle running stability.
Adjust vehicle height via height method.
height valve
shock absorber
Anti-roll torsion pole
Basic requirements: have suitable and stable resistance and characteristics. Sturdy construction and long service life. The oil does not leak during use and is easy to maintain.
Traction couplings and drives
central traction device
Traction coupling for bolsterless bogies
Traction coupling with bolster bogie
Traction drive
Rotary electric motor traction drive
Linear motor traction drive
Basic braking device
1. Brake caliper
2. Brake pads and brake discs
bogie force transmission
Common urban rail transit vehicle bogies
EMU bogie
trailer bogie
Rim lubrication device