An emergency braking control circuit based on coupler coupling detection includes a coupler status detection circuit and a coupler status relay that are connected in series with a train power loop. A normally open contact of the coupler status relay is connected to an emergency braking train line in a cross-parallel manner. When a coupler is coupled normally, inductive proximity sensors located at a knuckle and a central pivot are closed to drive the coupler status relay, and the normally open contact of the coupler status relay is connected in a cross-parallel manner to ensure that a corresponding node of the emergency braking loop is closed. In case of abnormal coupling or accidental uncoupling of couplers, the inductive proximity sensors of the couplers of two adjacent cars are disconnected simultaneously, the coupler status relays of the two cars are powered off, and emergency braking is applied.

A coupler for coupling a railway vehicle to another railway vehicle, comprising a mounting arm for mounting the coupler to a railway vehicle, a coupling arm, and a joint, wherein the mounting arm and the coupling arm are connected to each other via the joint in such a way that the mounting arm and the coupling arm are movable relative to each other and the coupling arm can be brought into a position ready for coupling. The coupling further comprises a protective device to prevent or reduce damage to the mounting arm and/or the coupling arm and/or the joint caused by impact forces.

A coupler for coupling a railway vehicle to another railway vehicle, comprising a mounting arm for mounting the coupler to a railway vehicle, a coupling arm, and a joint, wherein the mounting arm and the coupling arm are connected to each other via the joint in such a way that the mounting arm and the coupling arm are movable relative to each other and the coupling arm can be brought into a position ready for coupling. The coupling further comprises a protective device to prevent or reduce damage to the mounting arm and/or the coupling arm and/or the joint caused by impact forces.

A telescoping uncoupling lever assembly including a first lever, a hook connected to the first lever, a second lever, a handle connected to the second lever, and a third lever including a plurality of first lever connectors, a plurality of first glides bonded to the respective interior surfaces of the first lever connectors for engagement with the first lever, a plurality of second lever connectors, and a plurality of second glides bonded to the respective interior surfaces of the second lever connectors for engagement with the second lever.

An intermediate car electric coupler control circuit for a subway vehicle includes a coupling state relay, a power supply circuit for a decoupling electromagnetic valve, a first power supply circuit for an electric coupler control relay, a second power supply circuit for an air path and electric coupler module control electromagnetic valve, and a third power supply circuit for a bus control contactor. A coupler coupling operation is performed exactly according to a sequence of a mechanical coupling, an air path conduction, an electric coupler extension, and a medium- and low-voltage bus closing, wherein contacts of electric couplers are prevented from being damaged. A coupler decoupling operation is performed exactly according to a sequence of a contact heavy-current removal, an electric coupler withdrawal, an air path disconnection and a mechanical decoupling, wherein the contacts are prevented from being damaged by a heavy current arcing and a discharge.

An intermediate car electric coupler control circuit for a subway vehicle includes a coupling state relay, a power supply circuit for a decoupling electromagnetic valve, a first power supply circuit for an electric coupler control relay, a second power supply circuit for an air path and electric coupler module control electromagnetic valve, and a third power supply circuit for a bus control contactor. A coupler coupling operation is performed exactly according to a sequence of a mechanical coupling, an air path conduction, an electric coupler extension, and a medium- and low-voltage bus closing, wherein contacts of electric couplers are prevented from being damaged. A coupler decoupling operation is performed exactly according to a sequence of a contact heavy-current removal, an electric coupler withdrawal, an air path disconnection and a mechanical decoupling, wherein the contacts are prevented from being damaged by a heavy current arcing and a discharge.

An emergency braking control circuit based on coupler coupling detection includes a coupler status detection circuit and a coupler status relay that are connected in series with a train power loop. A normally open contact of the coupler status relay is connected to an emergency braking train line in a cross-parallel manner. When a coupler is coupled normally, inductive proximity sensors located at a knuckle and a central pivot are closed to drive the coupler status relay, and the normally open contact of the coupler status relay is connected in a cross-parallel manner to ensure that a corresponding node of the emergency braking loop is closed. In case of abnormal coupling or accidental uncoupling of couplers, the inductive proximity sensors of the couplers of two adjacent cars are disconnected simultaneously, the coupler status relays of the two cars are powered off, and emergency braking is applied.

An end of train device includes an enclosure having an exterior and a hollow interior housing a plurality of components; and a protective arrangement disposed within the hollow interior of the enclosure and fitted at least partially around at least one component housed within the hollow interior. The protective arrangement defines at least one compartment for the at least one component of the plurality components. The protective arrangement at least partially supports and isolates the at least one component from the enclosure. The device also includes an impact resistant handle disposed on the exterior of the enclosure. The handle is configured to absorb impacts without causing substantial deformation to the enclosure.

An end of train device includes an enclosure having an exterior and a hollow interior housing a plurality of components; and a protective arrangement disposed within the hollow interior of the enclosure and fitted at least partially around at least one component housed within the hollow interior. The protective arrangement defines at least one compartment for the at least one component of the plurality components. The protective arrangement at least partially supports and isolates the at least one component from the enclosure. The device also includes an impact resistant handle disposed on the exterior of the enclosure. The handle is configured to absorb impacts without causing substantial deformation to the enclosure.

A railroad car including a plurality of penetration resistant and protective structures including a penetration resistant and protective underframe, penetration resistant and protective first end, second end, and center bulkheads, penetration resistant and protective first, second, third, and fourth side walls, and protective first and second roof hatches, all configured to protect internal cylinder assemblies, the pipes that communicate the gas from the cylinders of the cylinder assemblies, and the safety critical valves, regulators, and other equipment connected to such cylinders and pipes of the railroad car in an accident (such as a derailment, crash and/or roll-over).