Abstract: A rail vehicle body structure, comprising: a tubular corrugated plate; an annular beam and an underframe cross beam sleeved within the corrugated plate; and underframe side beams provided between the annular beam and the underframe cross beam. The two sides of the bottom of the corrugated plate are symmetrically provided with connection parts, and the underframe side beam is disposed on the outside of the connection part.

Abstract: The present disclosure provides a device list synchronizing method and apparatus, a device and a computer storage medium, wherein the method comprises: after obtaining a user instruction instructing to discover devices, a smart network system sending, to a developer system, a DeviceDiscoveryRequest including first authorization information; the developer system storing the first authorization information; after obtaining information of update of a device list on a developer side, carrying the first authorization information to invoke an interface of the smart network system to trigger the smart network system to send the DeviceDiscoveryRequest to the developer system.

Abstract: The present disclosure provides a device discovering method and apparatus, a device and a computer storage medium, wherein the method comprises: receiving a user instruction instructing to discover devices; if it is found from search that an inter-network connection device exists in a local network and a current device-discovering process has not yet ended, sending first prompt information which includes a manner of guiding the user to trigger the inter-network connection device to be discovered. The manners provided by the present disclosure can guide the manner of triggering the inter-network connection device to be discovered during the device-discovering process, so that the user can conveniently and simply and smoothly trigger the inter-network connection device to be discovered according to the prompt information.

Abstract: A rail vehicle collision test rig used for a collision test on a tested vehicle is provided, and includes: a track configured to support and guide the tested vehicle; a small vehicle configured to push the tested vehicle; a drive motor configured to drive the small vehicle to advance and arranged at a first end of the track; a first rotating hub arranged at the first end of the track and connected to the drive motor; a brake motor configured to brake the small vehicle; a second rotating hub arranged at the second end of the track and connected to the brake motor; a connecting rope wound on the first rotating hub and the second rotating hub; a detector configured to detect a velocity and a position of the tested vehicle; and a controller connected to the detector and is allowed to be in communication with the detector.

Abstract: The present disclosure provides a device discovering method and apparatus, a device and a computer storage medium, wherein the method comprises: receiving a user instruction instructing to discover devices; if it is found from search that an inter-network connection device exists in a local network and a current device-discovering process has not yet ended, sending first prompt information which includes a manner of guiding the user to trigger the inter-network connection device to be discovered. The manners provided by the present disclosure can guide the manner of triggering the inter-network connection device to be discovered during the device-discovering process, so that the user can conveniently and simply and smoothly trigger the inter-network connection device to be discovered according to the prompt information.

Abstract: The present disclosure provides a device list synchronizing method and apparatus, a device and a computer storage medium, wherein the method comprises: after obtaining a user instruction instructing to discover devices, a smart network system sending, to a developer system, a DeviceDiscoveryRequest including first authorization information; the developer system storing the first authorization information; after obtaining information of update of a device list on a developer side, carrying the first authorization information to invoke an interface of the smart network system to trigger the smart network system to send the DeviceDiscoveryRequest to the developer system.

Abstract: A rail vehicle collision test rig used for a collision test on a tested vehicle is provided, and includes: a track configured to support and guide the tested vehicle; a small vehicle configured to push the tested vehicle; a drive motor configured to drive the small vehicle to advance and arranged at a first end of the track; a first rotating hub arranged at the first end of the track and connected to the drive motor; a brake motor configured to brake the small vehicle; a second rotating hub arranged at the second end of the track and connected to the brake motor; a connecting rope wound on the first rotating hub and the second rotating hub; a detector configured to detect a velocity and a position of the tested vehicle; and a controller connected to the detector and is allowed to be in communication with the detector.