A transmission line 5 configured to be broken when it comes into contact with a rail 4 is installed on a disengagement prevention guide 1 attached to an axle box 3 of a railway vehicle. One end 5a and the other end 5b of the transmission line 5 are connected to a determination unit 6 to monitor continuity of the transmission line 5. In the event of a derailment, the determination unit 6 determines that a derailment has occurred when the disengagement prevention guide 1 makes contact with the rail 4 and the transmission line 5 breaks, thereby interrupting the continuity of the transmission line 5. This arrangement allows an accurate detection of a derailment, so as to prevent a railway vehicle from traveling when its wheels have become disengaged from a rail without an operator being aware of it, thus improving safety after the derailment occurs.

A method and a system for checking the correct rail position of a guide member of a guided vehicle. The system is based on the use of an electrical switch designed to cooperate with a guide member of the vehicle guided by at least one guide rail. The switch has two states, respectively a first state and a second state. In one of the states the electrical switch is open and in the other state the electrical switch is closed. The switch is mounted on a load-bearing structure such that it is able to interact with the guide member. The switch is able to switch from the first state to the second state by interacting with at least one part of the guide member.

A method and a system for checking the correct rail position of a guide member of a guided vehicle. The system is based on the use of an electrical switch designed to cooperate with a guide member of the vehicle guided by at least one guide rail. The switch has two states, respectively a first state and a second state. In one of the states the electrical switch is open and in the other state the electrical switch is closed. The switch is mounted on a load-bearing structure such that it is able to interact with the guide member. The switch is able to switch from the first state to the second state by interacting with at least one part of the guide member.

An abrasion inspection apparatus includes: a first imaging unit that is installed on a side of a track, a vehicle traveling along the track, a guide wheel being installed on a side of the vehicle, the first imaging unit imaging an inside of the track via a telecentric lens; a second imaging unit that is installed in a vehicle traveling direction with respect to the first imaging unit on the side of the track and images the inside of the track via a telecentric lens; an image acquisition unit that acquires an image which is an image of a boundary of the guide wheel captured by the first imaging unit and is an image of a boundary on a first direction side in the vehicle traveling direction and an image which is an image of the boundary of the guide wheel captured by the second imaging unit at the same time as the capturing of the image by the first imaging unit and is an image of a boundary on an opposite side to the first direction side; and a guide wheel detection unit that detects an abrasion situation of the guide wheel according to a position of a boundary indicated in the images acquired by the image acquisition unit.

A railway track and derailment prevention device has main bodies installed on left and right sides of a bogie main body of a vehicle, and thick plates are vertically slidable in wide grooves provided in the main bodies. During a right turn of the vehicle, a centrifugal force causes a left flange to ride on a left rail, the left main body moves obliquely upward toward the rail, a front surface of the thick plate collides with a side surface of a rail head, an L-shaped hook of the thick plate collides with an eave of the rail head, and the main body further floats, thereby cutting a positioning pin between the main body and the thick plate. The main body is guided by the thick plate, sprung up almost vertically, and then, dropped, and the wheel is returned onto the rail, and the derailment is prevented.

A railway track and derailment prevention device has main bodies installed on left and right sides of a bogie main body of a vehicle, and thick plates are vertically slidable in wide grooves provided in the main bodies. During a right turn of the vehicle, a centrifugal force causes a left flange to ride on a left rail, the left main body moves obliquely upward toward the rail, a front surface of the thick plate collides with a side surface of a rail head, an L-shaped hook of the thick plate collides with an eave of the rail head, and the main body further floats, thereby cutting a positioning pin between the main body and the thick plate. The main body is guided by the thick plate, sprung up almost vertically, and then, dropped, and the wheel is returned onto the rail, and the derailment is prevented.

A track system may include a track assembly and a support assembly. A track assembly may include a toothed portion. The support assembly may include a support member removable from and adjustably connected to the track assembly. The toothed portion may include a plurality of track teeth. The support member may include an adjuster pinion. The adjuster pinion may include a plurality of pinion teeth configured to engage the plurality of track teeth. The adjuster pinion may be adjustable to an engaged position in which the adjuster pinion and the toothed portion are engaged with one another. The adjuster pinion may be adjustable to a disengaged position in which the adjuster pinion and the toothed portion are not engaged with one another.

A track system may include a track assembly and a support assembly. A track assembly may include a toothed portion. The support assembly may include a support member removable from and adjustably connected to the track assembly. The toothed portion may include a plurality of track teeth. The support member may include an adjuster pinion. The adjuster pinion may include a plurality of pinion teeth configured to engage the plurality of track teeth. The adjuster pinion may be adjustable to an engaged position in which the adjuster pinion and the toothed portion are engaged with one another. The adjuster pinion may be adjustable to a disengaged position in which the adjuster pinion and the toothed portion are not engaged with one another.

A portable, single-fixation, magnetic derailment mitigation device may be fixed on a rail track for measuring the deflection of the rail track. The magnetically fixing device is used for measuring vertical track deflection (sleeper voids), horizontal track deflection, ambient and rail temperature, rail angle, vibration, displacement, and location. The derailment mitigation device sends digital notifications and/or alarms during the live train and/or freight operations to help prevent derailments, rail buckles, breaks, and pull apart. The measured data and/or all events obtained from the derailment mitigation device is stored in the data storage such as cloud storage and viewed from any smart devices.

The present disclosure discloses a rail vehicle. The rail vehicle includes: a bogie, where the bogie has a straddle recess suitable for straddling a rail; and a vehicle body, where the vehicle body is connected to the bogie and pulled by the bogie to travel along the rail, and the vehicle body includes a plurality of compartments hinged sequentially along a length direction of the rail; and in the length direction of the rail, a surface of a compartment at at least one end of the vehicle body and facing away from an adjacent compartment is provided with an escape door that can be opened and closed. The rail vehicle according to these embodiments of the present disclosure facilitates optimization the structure of an escape passage, reduction in costs, reduction in occupied space and the weight borne by the rail, and improvement in stability.