Abstract: The present invention discloses a brake beam fatigue test stand, for simultaneously testing a fatigue strength of two brake beams, comprise: a base, and four upright columns vertical to the base and arranged on the base at intervals; a first tangential load actuator is mounted vertically between the first upright column and the second upright column, with simulated wheels being mounted on a front side and a rear side of a bottom of the actuator; a pressure load actuator is mounted vertically between the second upright column and the third upright column; a second tangential load actuator is mounted vertically between the third upright column and the fourth upright column, with simulated wheels being mounted on a front side and a rear side of a bottom of the actuator; the stiffness of the test stand in vertical and transverse directions is enhanced.

Abstract: A broadband communication network architecture with a train control network and a train serving network combined, is characterized by, comprising a trusted network and an untrusted network; the trusted network comprises a trusted carriage-level network element provided in each carriage, and in each of a front carriage and a last carriage, in addition to the trusted carriage-level network element, a trusted train-level network element is provided; the untrusted network comprises untrusted train-level network elements respectively provided in the front carriage and the last carriage; one trusted train-level network element communicates with one untrusted train-level network element via a security gateway, and several security gateways are redundant to each other.

Abstract: Provided is a hand brake limiting device, comprising a bearing I (10), a spring, a spring holder (12), a guide plate (9), and a guide plate holder (23); the bearing I (10) is disposed on the spring holder (12); the spring is sleeved on the outside of the bearing I (10); the guide plate (9) and the guide plate holder (23) are sequentially disposed at one side of the spring away from the spring holder (12); a stopper post III (7) is secured to one side of the spring holder (12) facing the spring; a stopper post In (8) is secured to one side of the guide plate (9) facing the spring; a stopper post II (26) is secured to one side of the guide plate holder (23) facing the guide plate (9).

Abstract: Provided is a hand brake, comprising a hand wheel (4), a chain (5), an enclosure (1), a drive shaft assembly (3) which is disposed in the enclosure (1), bull gear (13), and base assembly; the hand wheel (4) is connected to the drive shaft assembly (3), one end of the chain (5) is fixed to the bull gear (13) by means of rivets, and the main shaft of the bull gear (13) is a chain winding shaft (2). The hand brake further comprises a limiting device disposed on the chain winding shaft (2) between the bull gear (13) and the base (22); the limiting device comprises a first bearing (10), a torsion spring (11), a guide plate (9), and a guide plate holder (23). Installing the hand brake not only prevents the problem of the chain interfering with the movable pulley when the hand brake is deployed and thus affecting the performance of the hand brake, but also provides for a better appearance.

Abstract: A system and a method for parallel power supply control for auxiliary converters of a motor train unit in the presence of interconnecting lines. The system comprises multiple three-phase inverter modules. The multiple three-phase inverter modules are in parallel connection with each other. Any two-phase circuit of a three-phase inverter module is separately in parallel connection with a corresponding two-phase circuit of a three-phase inverter module adjacent to the three-phase inverter module by using a connecting line module. The connecting line module is connected to a control system. The three-phase inverter modules are also connected to the control system. The three-phase lines of the three-phase inverter modules are all provided with switches.

Abstract: The present application relates to the technical field of magnetic track brake, and in particular to a testing device for electromagnetic attraction force of a magnetic track brake, comprising a steel rail, a force measuring rail block, a guide groove, an elastic force measuring device and a pull machine, wherein the steel rail consists of segmented steel rails, the groove body of the guide groove is vertically provided between the segmented steel rails, the limiting plate is fixed on an inner wall of the groove body, the force measuring rail block and the elastic force measuring device are both located inside the groove body, and a bottom of the force measuring rail block is connected to the elastic force measuring device and the pull machine through an intermediate connection rod.

Abstract: The present application relates to the electronic field of railways, and in particular to the traction control system for electric multiple units. A host processor of the traction control system for electric multiple units is connected to a subordinate computer board via a CPCI bus. The traction control system for electric multiple units comprises a fast computing board, a network module and a debugging module. An instruction is passed to the subordinate computer board via the CPCI bus, and meanwhile, the subordinate computer board passes status information to the host processor via the CPCI bus to realize overall control on the interior of the traction control system for electric multiple units. Bidirectional communication between the signal sampling board and the fast computing board is realized by a high-speed differential LinkPort bus to realize quick control on the inverter power module and the four-quadrant power module.

Abstract: The patent was disclosed a telescopic mechanism in a telescopic hitch buffer device for use in high speed electric multiple unit (EMU) trains. The telescopic mechanism comprises a compression rod (2) located inside a movable housing (1) of said hitch buffer device, one end of said compression rod (2) being connected to the movable housing (1), and a bearing connector (3) encasing the compression rod (2). A guiding barrel (4) is fixedly mounted outside the bearing connector (3). An extension/retraction driving mechanism (9) is provided between the guiding barrel (4) and the movable housing (1). A locking mechanism comprises protrusions (6) distributed at the other end of the compression rod (2), and grooves (7) in engagement with protrusions (6) on the inner wall of the bearing connector (3).

Abstract: A balancing apparatus comprises a rotating shaft (2) arranged on a transition coupler (1), a rotating rod (4) and a top seat (7). The rotating rod (4) comprises an upper and lower end plates (11,12), and a ramp protrusion (13) that is arranged between the upper and lower end plates (12), and is of a sheet protruding structure; when the upper and lower end plates serve as the reference, in the longitudinal direction, the ramp protrusion (13) outward inclines towards the rotating rod, one end of the rotating rod (4) is arranged on the rotating shaft, a pin shaft (5) is arranged at the other end of the rotating rod (4), an eyelet bolt (6) is further arranged on the pin shaft (5), and the rotating rod (4) can rotate around the rotating shaft (2) and hinged to the eyelet bolt (6) through the pin shaft (5).

Abstract: A self-adjusting supporting head comprises a vehicle body lifting column (10) and a load-bearing detection device arranged on the vehicle body lifting column (10). The load-bearing detection device comprises a spring supporting plate (5), a spring (6), a limiting switch tip (8), a load limiting switch (9) and a floating load-bearing adjusting device. The floating load-bearing adjusting device comprises a floating load-bearing block (1), a floating load-bearing block mounting base (2) and a floating connector. The floating load-bearing block is in spherical fit with the floating load-bearing block mounting base.

Abstract: A segmented inverting cover plate apparatus for an underfloor vehicle lifting jack comprises a cover plate comprising a first movable cover plate (4) and a second movable cover plate (6), wherein the first movable cover plate (4) and the second movable cover plate (6) are pivotly connected via a pin shaft (15). An anti-inversion block (5) is provided directly below the pin shaft (15). A guide wheel (7) is provided below the end of the second movable cover plate (6) away from the first movable cover plate (4). An inverting arm (3) is provided below the first movable cover plate (4), with one end of the inverting arm (3) connected to the anti-inversion block (5) via a bearing (13), the other end of the inverting arm connected to a powered push rod (1) via a pin shaft (17) and an oil-containing bearing (18), and the powered push rod (1) is installed on a powered push rod mounting seat (2).