The present invention relates to a train coupler adapted for energy absorption by the use of a deformation unit. According to the invention an axial expansion module is provided and mounted together with the deformation unit and an anchor in the housing of the train coupler. By expanding the axial expansion module after being mounted into the housing, the deformation unit and the anchor will be biased between the front and rear lugs of the housing and held in place by a predetermined force in the axial direction only.

A coupler buffer device mounting structure for small-fastening-torque pushing under a compact space includes a double-headed stud passing through an installation fabrication hole of a vehicle body structure; a nut screwed on a first end of the double-headed stud; a push nut screwed on a second end of the double-headed stud and provided with a plurality of axial screw holes in a circumferential direction; and a plurality of push screws screwed into the circumferentially provided axial screw holes of the push nut, where the coupler buffer device is clamped and fixed to the vehicle body structure by heads abutting against the coupler buffer device via a hard washer. The coupler buffer device mounting structure achieves the passing of the double-headed stud from a coupler side to a vehicle body side by using the double-headed stud, the nut, the push nut and the plurality of push screws in combination.

A coupler buffer device mounting structure for small-fastening-torque pushing under a compact space includes a double-headed stud passing through an installation fabrication hole of a vehicle body structure; a nut screwed on a first end of the double-headed stud; a push nut screwed on a second end of the double-headed stud and provided with a plurality of axial screw holes in a circumferential direction; and a plurality of push screws screwed into the circumferentially provided axial screw holes of the push nut, where the coupler buffer device is clamped and fixed to the vehicle body structure by heads abutting against the coupler buffer device via a hard washer. The coupler buffer device mounting structure achieves the passing of the double-headed stud from a coupler side to a vehicle body side by using the double-headed stud, the nut, the push nut and the plurality of push screws in combination.

A draft gear assembly for use with railcars having coupler members is provided. The draft gear assembly has front and back ends and comprises a yoke, a coupler follower, a front resilient member, an intermediate stop member, and a back resilient member. The yoke has a back wall, a top wall extending from the back wall toward the front end of the draft gear assembly, and a bottom wall extending from the back wall toward the front end of the draft gear assembly. The coupler follower is positioned between the butt end of the coupler shank and the front end of the draft gear assembly. The front resilient member is positioned between the coupler follower and the intermediate stop member. The back resilient member is positioned between the intermediate stop member and the yoke back wall. The front and back resilient members are compressible.

A draft gear assembly for use with railcars having coupler members is provided. The draft gear assembly has front and back ends and comprises a yoke, a coupler follower, a front resilient member, an intermediate stop member, and a back resilient member. The yoke has a back wall, a top wall extending from the back wall toward the front end of the draft gear assembly, and a bottom wall extending from the back wall toward the front end of the draft gear assembly. The coupler follower is positioned between the butt end of the coupler shank and the front end of the draft gear assembly. The front resilient member is positioned between the coupler follower and the intermediate stop member. The back resilient member is positioned between the intermediate stop member and the yoke back wall. The front and back resilient members are compressible.

The current invention relates to a triggering monitoring device for a deformation tube having two tube parts which can slide into each other against resistance in a coupling, in particular a train coupling, having a housing that includes a connection for connecting to the deformation tube and at least one working surface for action of one tube part during its movement relative to the other tube part of the deformation tube part, wherein the housing can be deformed through the action of the tube part on the working surface. The triggering monitoring device according to the invention is characterized in that a sensor is provided in or on the housing which detects deformation of the housing and which is moreover equipped to transmit detection of a deformation to an evaluation device.

The current invention relates to a triggering monitoring device for a deformation tube having two tube parts which can slide into each other against resistance in a coupling, in particular a train coupling, having a housing that includes a connection for connecting to the deformation tube and at least one working surface for action of one tube part during its movement relative to the other tube part of the deformation tube part, wherein the housing can be deformed through the action of the tube part on the working surface. The triggering monitoring device according to the invention is characterized in that a sensor is provided in or on the housing which detects deformation of the housing and which is moreover equipped to transmit detection of a deformation to an evaluation device.

Various embodiments include a railroad car draft key wear protector including a first arm, a second arm spaced-apart from the first arm, a first connector integrally connected to the first arm and integrally connected to the second arm, and a second connector integrally and detachably connected to the first arm and integrally and detachably connected to the second arm, wherein the railroad car draft key wear protector is configured to be positioned on an uninstalled draft key, and is configured to be positioned on an installed draft key in situ.

Disclosed is a coupler for a coupling arrangement for a rail wagon. The coupler comprising a body and a knuckle. The body has a head portion at one end for engaging with a knuckle and a butt portion at an opposing end for engaging with a yoke. The knuckle extends between a protruding portion that engages a complementary knuckle of a coupler for an adjoining rail wagon, and a tail extending along a longitudinal axis for coupling the knuckle with the head portion of the coupler. The head portion comprises an interior wall defining an interior cavity for engaging the tail of the knuckle. The coupler is configured such that in use loading induced in the coupler is transferred between the knuckle and the head portion along a substantially evenly distributed load path.

A rail vehicle has a bogie which rolls on a track in a direction of travel, a vehicle structure which is supported on the bogie, a rigid carrying structure which is arranged on the end side of the rail vehicle, and an end-side coupling opening through which a coupling extends for coupling further rail vehicles. A coupling securing device secures the coupling to the rail vehicle. The coupling securing device has reversible securing elements which permit a reversible lifting movement counter to the direction of travel to such an extent that the coupling is retracted completely into the supporting structure. As a result of the retraction of the coupling into the cage-like carrying structure it no longer influences the crash behavior.