Couplers

Semi High Speed
Coupler

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High Speed Coupler
High Tensile High Speed Coupler Assembly

SONA Comstar make High Tensile High Speed Centre Buffer Coupler with Balanced Draft Gear is designed to couple two coaches together.

This coupler is having double acting Draft Gear, which absorbs & releases energy in both Draw mode (Tensile) and Buff mode (Compression).

Engagement of one coupler with another coupler is automatic. However, unlocking is to be done manually. It is equipped with manual uncoupling device to unlock the coupler from outside the track.

This coupler also has the provision for Transition Screw Coupling for form coupling between 'H' type, 'E' Type or Hook type coaches/locomotives.

SONA Comstar make High Tensile Semi-Permanent CBC with Balanced Draft Gear & Muff Couplings is designed to couple two adjacent coaches together of Semi-Highspeed trains and forms a rigid connection to facilitate the formation of train.

When coupled, it allows the coaches to move and accommodate track curvature & differences in vertical height. It also absorbs the reversible energy in a controlled way which reduces the longitudinal jerks and provides comfortable journey to the passengers.

The precise design of balanced Draft Gear absorbs & releases the reversible energy in a controlled manner in both Draw mode (Tensile) and Buff mode (Compression) during train application.

The Semi-Highspeed Semi-Permanent Couplers consists of the following main components:

  1. • Muff Coupling Kit
  2. • Balanced Draft Gear with Shank
  3. • Guide Cone Assembly
  4. • Rear Carrier Plate Assembly
  1. • Intermediate Tube
  2. • H-Housing Assembly
  3. • Front Carrier Plate Assembly
The AAR-H Type High Tensile Coupler consists of the following main components;
  • • AAR-H type tight lock Coupler Head assembly
  • • Balanced Draft Gear assembly
  • • Vertical support Assembly
  • • Manual Uncoupling Device Assembly
  • • Front Carrier Plate Assembly
  • • Rear Carrier Plate Assembly
Principle Design Features;
  • 1. Horizontal and Vertical Articulation
    Horizontal articulation (±15°) and Vertical articulation (±5°).
  • 2. Gathering Coupling Range
    ±16 mm ALL AROUND (SP TYPE)
    ±110 mm Horizontal gathering (AAR-H Type)
    ±90 mm Vertical gathering (AAR-H Type)
  • 3. Static Load Capability
    Designed to withstand static Tensile load of 1500 kN, Compressive load of 2000 kN & vertical Bending load of 500 kN.
  • 4. Balanced Draft Gear
    Softening Draft Gears used in Balanced Draft Gear to absorb initial traction forces to reduce longitudinal jerks.
  • 5. Standards and Energy Absorption
    Balanced Draft Gear complies with UIC 526, EN 15551 standards and is designed to absorb reversible energy up to 35 kJ.
  • 6. Interchangeability
    Interchangeable with AAR-H Type Coupler & SPc design.
  • 7. Mechanically Controlled Movement
    Mechanically controlled mechanism to control BUFF (Compression), DRAW (Tensile) stroke & articulations during Train application.
  • 8. Reduced Slack and Improved Ride Comfort
    Designed to transfer running forces axially, reduced slack between the mating parts and provides comfortable ride with minimal jerk.
  • 9. Lightweight and Robust Design
    3-piece lightweight & robust design for smooth commissioning.
Salient Features
  • • Designed to withstand static Tensile load of 1500 kN, Compressive load of 2000 kN & vertical Bending load of 500 kN.
  • • Balanced Draft Gear Complies with UIC norms, designed to absorb reversible energy 35 kJ (Min.) & tested in dynamic condition using TUP-Hammer as per AAR.
  • • Coupling Speed of 3–5 kmph
  • • Ensures more positive engagement when coupling at low speeds upto 5kmph.
  • • Mechanically controlled mechanism to control BUFF (Compression) and DRAW (Tensile) stroke during Train application.
  • • Tertiary pin locking assy. provides more safety feature to stop uncoupling during train application.
AAR-H COUPLER
(COUPLED CONDITION)
INTERCHANGEABLE
SP COUPLER
(COUPLED CONDITION)