An electromagnetic propulsion system comprises a plurality of stator coils wound about a first axis, a plurality of support structures, a coupler that surrounds a portion of the stator coils, and a plurality of rotor coils wound about an axis that is parallel to the first axis. The stator coils are configured to receive electric current to induce a first magnetic field. The support structures support the stator coils. The coupler includes a notch oriented so that one of the support structures can pass through the notch when the coupler moves along the stator coils. The rotor coils are attached to the coupler and are configured to receive electric current to induce a magnetic field that interacts with the first magnetic field so that a magnetic force is applied to the rotor coils, thereby propelling the coupler and the rotor coils along the stator coils.

An inspection device for subway tunnel based on three-dimensional laser scanning includes a three-dimensional laser scanner, an adaptive structure of a track trolley, a power control module for the track trolley, a photoelectric sensor and a body of the track trolley. The power control module is arranged on the body. A support rod is vertically arranged on the power control module, and the three-dimensional laser scanner is mounted at a top of the support rod. The adaptive structure is symmetrically arranged at two sides of the body of the track trolley, and the photoelectric sensor is arranged in the body of the track trolley. The inspection device is designed to be modular, which is convenient to carry and repair, and easy to mount. In addition, the inspection device has low labor cost due to less manual intervention, and the inspection efficiency can be improved.

An inspection device for subway tunnel based on three-dimensional laser scanning includes a three-dimensional laser scanner, an adaptive structure of a track trolley, a power control module for the track trolley, a photoelectric sensor and a body of the track trolley. The power control module is arranged on the body. A support rod is vertically arranged on the power control module, and the three-dimensional laser scanner is mounted at a top of the support rod. The adaptive structure is symmetrically arranged at two sides of the body of the track trolley, and the photoelectric sensor is arranged in the body of the track trolley. The inspection device is designed to be modular, which is convenient to carry and repair, and easy to mount. In addition, the inspection device has low labor cost due to less manual intervention, and the inspection efficiency can be improved.

The present invention relates broadly to a railway track trolley (10) generally comprising a collapsible chassis (12), two pairs of wheels (14a/b) and (16a/b), and a platform assembly (18). The collapsible chassis (12) includes a pair of opposing beams member (20a) and (20b) interconnected by a pair of adjustable cross-members (22) and (24). The pair of wheels (14a) and (16a) are removably mounted to opposing ends of one of the beam members (20a) whereas the other pair of wheels (14b) and (16b) are removably mounted to opposing ends of the other of the beam members (20b). The railway tracks (26a) and (26b) may be separated at one of a plurality of predetermined track gauges and the collapsible chassis in an expanded condition is designed to match the required lateral separation of the opposing rail members (26a/b). The invention is also directed broadly to a gate catch assembly (90) generally comprising a coupling sub-assembly (92), and a catch sub-assembly (96) configured to be releasably engaged by the coupling sub-assembly (92). The gate catch assembly (90) may be installed in conjunction with the platform assembly (18) of the railway track trolley (10) of the earlier aspect of the invention.

The present invention relates broadly to a railway track trolley (10) generally comprising a collapsible chassis (12), two pairs of wheels (14a/b) and (16a/b), and a platform assembly (18). The collapsible chassis (12) includes a pair of opposing beams member (20a) and (20b) interconnected by a pair of adjustable cross-members (22) and (24). The pair of wheels (14a) and (16a) are removably mounted to opposing ends of one of the beam members (20a) whereas the other pair of wheels (14b) and (16b) are removably mounted to opposing ends of the other of the beam members (20b). The railway tracks (26a) and (26b) may be separated at one of a plurality of predetermined track gauges and the collapsible chassis in an expanded condition is designed to match the required lateral separation of the opposing rail members (26a/b). The invention is also directed broadly to a gate catch assembly (90) generally comprising a coupling sub-assembly (92), and a catch sub-assembly (96) configured to be releasably engaged by the coupling sub-assembly (92). The gate catch assembly (90) may be installed in conjunction with the platform assembly (18) of the railway track trolley (10) of the earlier aspect of the invention.

A railway vehicle includes two axles with wheels at ends thereof, and a frame rotatably supporting the axles. A seat is carried on the frame adjacent to pedals which are coupled to at least one of the wheels, typically through one of the axles. A battery and electric motor are configured to also supply power. The electric motor is adjustable to deliver controllable amounts of electric power to drive the wheels, separate from or in addition to pedal power delivered to the wheels. A trailer accessory can be towed on the rails by the vehicle. A turntable is provided with rail segments thereon, rotatable relative to a base, and with ramps on at least one end of each rail segment alignable with left and right rails of the railway. Vehicles can roll up the ramps onto the rail segments and then pivot 180° for operation in a reverse direction.

A railway vehicle includes two axles with wheels at ends thereof, and a frame rotatably supporting the axles. A seat is carried on the frame adjacent to pedals which are coupled to at least one of the wheels, typically through one of the axles. A battery and electric motor are configured to also supply power. The electric motor is adjustable to deliver controllable amounts of electric power to drive the wheels, separate from or in addition to pedal power delivered to the wheels. A trailer accessory can be towed on the rails by the vehicle. A turntable is provided with rail segments thereon, rotatable relative to a base, and with ramps on at least one end of each rail segment alignable with left and right rails of the railway. Vehicles can roll up the ramps onto the rail segments and then pivot 180° for operation in a reverse direction.

An electromagnetic propulsion system is provided. The system comprises a first plurality of stator coils wound about a first axis, a plurality of support structures, a first coupler that surrounds a portion of the first plurality of stator coils, and a first plurality of rotor coils wound about an axis that is parallel to the first axis. The stator coils are configured to receive electric current to induce a first magnetic field. The plurality of support structures supports the first plurality of stator coils. The first coupler includes a notch oriented so that one of the plurality of support structures can pass through the notch when the first coupler moves along the first plurality of stator coils. The first plurality of rotor coils is attached to the first coupler and are configured to receive electric current to induce a magnetic field that interacts with the first magnetic field so that a magnetic force is applied to the first plurality of rotor coils, thereby propelling the first coupler and the first plurality of rotor coils along the first plurality of stator coils.

An adaptive inspection carriage for inspecting the rails of a railroad by one or more detectors supported by the carriage. The carriage includes a frame having a generally rectangular configuration with oppositely disposed side members and transverse members. The side members may be in an operative position extending parallel to a respective rail to be inspected. The transverse members may be in an operative position extending in a direction transverse to the rails. Each transverse member may be connected at one end with a side member by means of a swivel coupling having one swivel axis perpendicular to the plane of the generally rectangular frame and another swivel axis parallel to the side member, and connected at the other end to another side member by a swivel coupling having one swivel axis perpendicular to the plane of the rectangular frame and no swivel axis parallel to the second side member.

An adaptive inspection carriage for inspecting the rails of a railroad by one or more detectors supported by the carriage. The carriage includes a frame having a generally rectangular configuration with oppositely disposed side members and transverse members. The side members may be in an operative position extending parallel to a respective rail to be inspected. The transverse members may be in an operative position extending in a direction transverse to the rails. Each transverse member may be connected at one end with a side member by means of a swivel coupling having one swivel axis perpendicular to the plane of the generally rectangular frame and another swivel axis parallel to the side member, and connected at the other end to another side member by a swivel coupling having one swivel axis perpendicular to the plane of the rectangular frame and no swivel axis parallel to the second side member.