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A swivel caster with a wheel lock. The vertical swivel on this type of caster cannot be locked in position. Caster central locking mechanism on an old Stryker hydraulic stretcher. Shown in the locked position with the center cam rotated downward. Common inexpensive casters may include a brake feature, which prevents the wheel from turning. This ...
The brake is released by raising its handle, thereby retracting the steel rod away from the stage. Wagon brakes provide a very fast means of locking and unlocking wagons, but the brakes and stage can be damaged if the running crew attempts to move a wagon while its brakes are engaged. Damage to the stage can be mitigated by using extension ...
Each BRUTE had two fixed wheels at the rear and two swivelling caster wheels at the front, with polyurethane tyres and taper bearings. [1] Coupling were at front and rear, the front being a pin, the rear a hinged loop on a sprung shaft. A lever on the front operated brakes on the rear wheels and lifted the coupling pin.
They often consist of at least 3 wheels per assembly, but can contain more. The typical arrangement of the wheels are: Running wheels (also known as road wheels or tractor wheels): positioned on the top of the rail, bearing the weight of the train. Side friction wheels: positioned on a horizontal plane, either inside or outside of the rails ...
The bogie frame: This can be of inside frame type where the main frame and bearings are between the wheels, or (more commonly) of outside frame type where the main frame and bearings are outside the wheels. Suspension to absorb shocks between the bogie frame and the rail vehicle body. Common types are coil springs, leaf springs and rubber airbags.
Caster displacement moves the steering axis ahead of the axis of wheel rotation, as with the front wheels of a shopping cart. Caster angle moves the steering axis from vertical. [3] In automobile racing, the caster angle may be adjusted to optimize handling characteristics for a particular venue. This is all connected to the front wheels.
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