What is kingpin lock?

What is kingpin lock?

To prevent trailer movement, either a king pin lock or gladhand lock is most often used by trucking companies and professional drivers. The former is designed to prohibit fifth wheel attachment to the trailer; the latter is designed to prohibit release of the trailer brakes.

What is a kingpin on a tractor trailer?

A King Pin is a round steel shaft attached to the front of a fifth wheel trailer and the fifth wheel hitch on the truck clamps around it. Most 5th wheel trailers come with the king pin already mounted to the trailer.

What is a kingpin or drawbar lock?

Explanation: A kingpin or drawbar lock is a visible and effective deterrent to thieves wishing to steal an unattended trailer. Category: Drivers’ Hours and Rest Periods.

What is Truck kingpin?

The kingpin (also king-pin, king pin and k pin) is the main pivot in the steering mechanism of a car or other vehicle. The term is also used to refer to part of a fifth wheel coupling apparatus for a semi and its trailer or other load.

Are there different size king pins?

The king pin dimensions can be the same between fifth wheel trailers and large commercial trailers. Both types of trailers often use a standard 2 inch king pin although semis sometimes have a 3-1/2 inch. As long as your truck fits a 2 inch king pin it can work.

What are truck king pins made of?

AISI 4320
Forged out of AISI 4320 material the Cruciform kingpin is available in a variety of welding configurations. Double Spool or “B” Style King pins are primarily forged out of AISI 8630 material, unless customer specifications require AISI 4320.

When should a trailer be fitted with a kingpin or drawbar lock?

fit a kingpin or drawbar lock to a trailer if you have to leave it unattended.

Why are good Vehicle drivers Hours of work controlled?

Explanation: Drivers need to be alert at all times. These set a maximum driving time and minimum requirements for rest and break periods. Setting limits on the length of time a driver can work combats fatigue and so helps road safety.

How do you find the king pin on a trailer?

Trailer King Pin Gauge

  1. Place the gauge 90 degrees to the bolster plate. If the gauge will not fit into the king pin recesses, the height of the king pin is incorrect or the king pin or bolster plate is bent.
  2. Rotate the gauge around the king pin 360 degrees to check for straightness of the king pin and bolster plate.

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