Trailer truck
AssigneeMitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorAkira Yamanaka
Life of this patent
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Abstract
A trailer truck comprising a trailer mounted at its front on the rear of a chassis frame of a tractor and energy absorbing system located between the chassis frame and a coupler of the trailer and adapted to allow an upward or forward movement of the coupler relative to the frame to absorb kinetic energy of the trailer upon collision.
Claims15
A trailer truck comprising a trailer mounted at its front on the rear of a chassis frame of a tractor to be allowed to move forwardly or upwardly relative to said frame upon application of a longitudinal impact force greater than a predetermined value to said trailer, and an energy absorbing system located between said chassis frame and said front of the trailer for absorbing kinetic energy of said trailer upon said relative movement thereof, said energy absorbing system being located between said chassis frame of the tractor and a bed of a coupler connected at its upper end to the bottom of said front of the trailer, said energy absorbing system comprises a flat load carrying friction plate positioned between said chassis frame of the tractor and said bed of the coupler, and shearable means connecting said chassis frame to said coupler bed.
A trailer truck comprising a trailer mounted at its front on the rear of a chassis frame of a tractor to be allowed to move forwardly or upwardly relative to said frame upon application of a longitudinal impact force greater than a predetermined value to said trailer, and an energy absorbing system located between said chassis frame and said front of the trailer for absorbing kinetic energy of said trailer upon said relative movement thereof, said energy absorbing system being located between said chassis frame of the tractor and the bed of a coupler which is connected at its upper end to the bottom of said front of the trailer, said energy absorbing system comprising a friction plate positioned between said chassis frame of the tractor and said bed of the coupler, and said energy absorbing system also comprising a die fixed to either of said chassis frame or said bed of the coupler, and a metal rod fixed at its forward end to the other of said bed or said frame and having a smaller diameter portion on its forward end extending through the bore in said die with its larger diameter portion extending rearwardly therefrom to cause plastic deformation of said larger diameter portion upon forward movement of said bed relative to said frame.
A trailer truck comprising a trailer mounted at its front on the rear of a chassis frame of a tractor to be allowed to move forwardly or upwardly relative to said frame upon application of a longitudinal impact force greater than a predetermined value to said trailer, and an energy absorbing system located between said chassis frame and said front of the trailer for absorbing kinetic energy of said trailer upon said relative movement thereof, said energy absorbing system being located between said chassis frame of the tractor and the bed of a coupler which is connected at its upper end to the bottom of said front of the trailer, said energy absorbing system comprising a friction plate positioned between said chassis frame of the tractor and said bed of the coupler, and said chassis frame is a frame member and said bed is a support for the coupler and comprises a bed member, said energy absorbing system including an apertured die fixed to one of said members, and an axially extending metal rod having a smaller diameter forward portion positioned in and extending through the bore in said die and secured at its forward end to the other of said members with its larger diameter portion extending rearwardly of said trailer from said die for plastic deformation of said larger diameter portion as it is pulled through said die on forward movement of said trailer relative to said frame member.
Dependencies are inferred from the claim text.