The application relates to a crash system for the head module of a rail vehicle, said head module being detachably fixed to the front face of a subsequent railcar unit without additional underframe. The crash system has a crash conduction element that carries a crash box at its front end and the back end of which is fixed to the underframe support of the subsequent railcar unit. In the event of a crash, crash forces are thus absorbed by the underframe of the subsequent railcar unit.

A device has a rod (8) mounted in an articulated support (1), suitable for cutting with a cutting tool, the articulated support (1) comprising a body (3) with an internal spherical surface (5), in which a movable external spherical surface (4) of an inner ring (2) is embedded. In addition, the inner ring (2) of the articulated support (1) has at least one cutting knife (10, 10a) designed to cut the outer layer of the rod (8).

A device has a rod (8) mounted in an articulated support (1), suitable for cutting with a cutting tool, the articulated support (1) comprising a body (3) with an internal spherical surface (5), in which a movable external spherical surface (4) of an inner ring (2) is embedded. In addition, the inner ring (2) of the articulated support (1) has at least one cutting knife (10, 10a) designed to cut the outer layer of the rod (8).

The invention relates to a railway vehicle, wherein the vehicle having a plurality of cars arranged one behind the other longitudinally, wherein each car has a front end articulated to a rear end of the adjacent car; at least one power unit connected to a first of the cars; and a collision energy absorbing assembly, The collision energy absorbing assembly has a first collision energy absorbing system located at the front of the power unit and a second collision energy absorbing system located at the connection between the power unit and the first car.

The invention relates to a railway vehicle, wherein the vehicle having a plurality of cars arranged one behind the other longitudinally, wherein each car has a front end articulated to a rear end of the adjacent car; at least one power unit connected to a first of the cars; and a collision energy absorbing assembly, The collision energy absorbing assembly has a first collision energy absorbing system located at the front of the power unit and a second collision energy absorbing system located at the connection between the power unit and the first car.

An impact energy absorbing device for vehicle, comprising a cut sleeve (1) attached to the vehicle on one end and a cutting tool (2) with a circular cross-section, coaxial with the sleeve (1) and movable along the sleeve (1), whereby the cutting tool (2) has blades (3) located along the sleeve's (1) circumference, and along the length of the sleeve (1) there are furrows (4) for guiding the blades (3), whereby the furrows (4) are located on the sleeve's (1) circumference in such a manner that their location corresponds to the circumferential location of the blades (3). Wherein the cutting tool (2) is located at the sleeve's (1) free end and secured with a closing element (6) which retains the cutting tool (2) allowing it to slide along the sleeve (1) towards its end attached to the vehicle.

An energy dissipation device is shown in connection with its implementation in train couplers. The energy dissipation device comprises axially compressible, irreversibly deforming steel elements arranged in a housing and axially pre-tensioned between a compression means and a counter-pressure means. In case of an impact, the compression means is moving in sliding contact with the inside wall of the housing to provide axial compression of the energy absorbing elements while preserving the integrity of the housing.

An energy dissipation device is shown in connection with its implementation in train couplers. The energy dissipation device comprises axially compressible, irreversibly deforming steel elements arranged in a housing and axially pre-tensioned between a compression means and a counter-pressure means. In case of an impact, the compression means is moving in sliding contact with the inside wall of the housing to provide axial compression of the energy absorbing elements while preserving the integrity of the housing.

An anti-impact device includes a first connector, an upper outer cylinder, a lower outer cylinder and a second connector which are sequentially connected, where a top of the lower outer cylinder is sleeved with the upper outer cylinder to be movably connected to the upper outer cylinder; an aluminum honeycomb and a magnetorheological buffer outer cylinder are arranged inside the lower outer cylinder, the aluminum honeycomb is arranged at a bottom of a lower end cover, a piston rod is arranged inside the magnetorheological buffer outer cylinder, a top end of the piston rod extends out of an upper end cover and is connected to a collision head, and the piston rod between the collision head and the upper end cover is sleeved with a return spring; and an electromagnetic coil is wound around the piston rod, a damping piston is arranged at a lower part of the piston rod.

An anti-impact device includes a first connector, an upper outer cylinder, a lower outer cylinder and a second connector which are sequentially connected, where a top of the lower outer cylinder is sleeved with the upper outer cylinder to be movably connected to the upper outer cylinder; an aluminum honeycomb and a magnetorheological buffer outer cylinder are arranged inside the lower outer cylinder, the aluminum honeycomb is arranged at a bottom of a lower end cover, a piston rod is arranged inside the magnetorheological buffer outer cylinder, a top end of the piston rod extends out of an upper end cover and is connected to a collision head, and the piston rod between the collision head and the upper end cover is sleeved with a return spring; and an electromagnetic coil is wound around the piston rod, a damping piston is arranged at a lower part of the piston rod.