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Bar Suspension

Definition:

  • Bar Suspension:
  • A method used to mount the motor on an electrically propelled vehicle. In this setup, one side of the motor is supported on the driving axle, and the other side is supported by a spring-suspended bar that lies transversely across the truck. This method is also known as yoke suspension.

Purpose:

  • Motor Support and Stability:
  • To provide a stable and secure method of supporting the motor in an electrically propelled vehicle, ensuring smooth operation and minimizing vibrations and shocks.

Mechanism:

  1. Driving Axle Support:
  • One side of the motor is directly supported on the driving axle, which is responsible for transferring power from the motor to the wheels.
  1. Spring-Suspended Bar:
  • The other side of the motor is supported by a bar that is suspended by springs.
  • This bar lies transversely (horizontally) across the truck, providing additional support and stability to the motor.

Benefits:

  1. Reduced Vibrations:
  • The spring-suspended bar helps to absorb and dampen vibrations and shocks, leading to smoother operation and reduced wear on the motor and vehicle components.
  1. Improved Stability:
  • By supporting the motor on both the driving axle and a transverse bar, the system provides better stability and balance, enhancing the overall performance of the vehicle.
  1. Enhanced Durability:
  • The method helps distribute the load and stresses more evenly, reducing the risk of damage to the motor and other components, thereby extending their lifespan.

Applications:

  1. Electric Trains:
  • Commonly used in electric locomotives and train cars to mount traction motors securely and efficiently.
  1. Electric Buses:
  • Applied in electric buses to ensure the motor is properly supported and to enhance ride comfort by minimizing vibrations.
  1. Industrial Vehicles:
  • Used in various types of electrically propelled industrial vehicles where motor stability and reduced vibrations are crucial for efficient operation.

Example Process:

  1. Installation:
  • The motor is mounted on the driving axle on one side.
  • A transverse bar is positioned across the truck and connected to the motor on the other side using springs for suspension.
  1. Operation:
  • As the vehicle operates, the driving axle transfers power from the motor to the wheels.
  • The spring-suspended bar absorbs vibrations and shocks, ensuring smooth and stable operation.
  1. Maintenance:
  • Regular inspection of the spring-suspended bar and driving axle connections is necessary to ensure they are secure and functioning correctly.
  • Any worn or damaged components should be replaced to maintain the system’s effectiveness.

Bar suspension, or yoke suspension, is a reliable and effective method for mounting motors in electrically propelled vehicles. By supporting the motor on both the driving axle and a spring-suspended transverse bar, this system enhances stability, reduces vibrations, and improves the overall durability of the motor and vehicle components. It is widely used in electric trains, buses, and various industrial vehicles, providing significant benefits in terms of performance and longevity.

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