Draw-Gear TRIZ Cases

A railway coupling draw gear uses a pivoting second pressure plate to transmit compressive forces through an asymmetrical spring array.

A pivot anchor uses a surrounding deformation tube to absorb collision energy through controlled plastic yielding.

Nested elastomeric stacks absorb draft and buff loads, preventing buckling and leakage while limiting force transmission to the car frame.

Rotating locking ring engages drawbar limiting block to secure extension position, eliminating internal pressure-receiving rod and reducing space occupation.

A railcar damping system uses differentiated travel capabilities to manage energy absorption during impact events.

A kinematic coupling system uses tension bands and a sleeve to distribute deceleration forces between rail carriages.

Direct coupling fixing device connection to longitudinal beams reduces power transmission element mass and frees underfloor space.

External shoulder welding connects the connector to the center sill, avoiding internal welds that complicate replacement and increase labor.

Austempering and ribbed coring lower yoke mass, improving handling efficiency without compromising fatigue resistance.

An asymmetric draft gear mechanism absorbs shock energy through mechanical friction to protect railcars from buff forces.

Cast support frame uses recessed areas and thick flanges to optimize tensile force transmission, reducing weight while maintaining load-bearing capacity.

A hybrid draft gear integrates an elastomeric unit stack behind the yoke tail to absorb buff forces through combined mechanical and viscoelastic compression.

Composite materials and merging principles reduce manufacturing time and mass while maintaining structural strength in rail vehicle support devices.

Austenempered ductile iron yokes reduce weight while maintaining structural integrity, addressing wear resistance trade-offs in heavy coupling operations.

A train coupler connection device uses a bearing bracket recess to allow stopper movement past the bracket surface.

A frontal lifting system uses profiled gripping brackets to engage underframe support profiles for rail vehicle reraising.

A pivotable support structure guides and locks a coupling shaft bolt into position without auxiliary tools.

Replacing aging rubber blocks, this adjustable spring mechanism maintains coupler height while reducing space occupancy below the vehicle.

Segmented straps connect the nose end to a butt end with concave contours, reducing weight while resisting bending stresses.

Vertical disconnection through shear pins resolves limited retreat space and uneven stress distribution in railway vehicle coupling buffers.

A bearing bracket assembly relocates its connection portion forward to transmit forces via rubber elements and a pin.

A rail vehicle coupler box uses a constant-force connector to separate movable and fixed portions during impact.

A crash plate absorbs impact forces to protect rail vehicle couplers from collision damage.

A rail vehicle coupling device uses a ductile iron support to deform a pipe section and absorb impact energy.

A vehicle coupling rod hinge joint with a tension spring arrangement enables horizontal swivel angles.

Axial elastomer springs mount the contact body to absorb idle travel during tensile-compressive loading reversals, reducing material wear at the joint.

A double-headed stud with a push nut uses axial screws to clamp the coupler buffer device securely.

Segmented elastomeric units replace hydraulic systems prone to leakage, dissipating impact forces across varied sill configurations without reconfiguration.

An asymmetric equatorial section merges anti-rotation constraints into the spherical bearing, reducing device complexity while maintaining reliability.

A mechanical draft gear uses friction clutch assemblies to absorb buff and draft forces in railroad freight car coupling systems.

Replacing heavy draft gears with a spherical ball and race mechanism reduces coupler weight while absorbing shock loads through rotational flexibility.

A tandem draft gear assembly distributes buff and draft loads across parallel resilient members within a standard pocket.