Abstract

Provided is a hand brake, comprising a hand wheel, a chain, an enclosure, and a drive shaft assembly and bull gear and base assembly arranged in the enclosure; the hand wheel is connected to the drive shaft, one end of the chain is fixed to the bull gear by means of rivets, and the main axis of the bull gear is a chain winding shaft. The hand brake is provided with a limiting means disposed on the chain winding shaft between the bull gear and the base. The limiting means comprises a bearing I, a torsion spring, a guide plate, and a guide plate holder; the torsion spring is sleeved on the outside of the bearing I. A stopper post III is secured to the side of the torsion spring holder facing the torsion spring; a stopper post I is secured to the side of the guide plate facing the torsion spring; a stopper post II is secured to the side of the base facing the guide plate holder. The stopper post II passes, by means of a hole, through the guide plate holder, and rotates in the arcuate groove. In the hand brake of the present invention, the center distance between the drive shaft and the end chain of the chain winding shaft is increased by 47 mm; 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.

IPC Classes  ?

• B61H 13/04 - Hand or other personal actuation by mechanisms incorporating toothed gearing

Abstract

Disclosed is a front installed suspension system having overload protection. The system comprises a mounting seat (1), a centring apparatus (2), a support apparatus (3) used for supporting a coupling buffer and a coupling end pin (4), wherein the mounting seat (1) is connected to a railway vehicle body, and the centring apparatus (2) and the support apparatus (3) are both installed on the mounting seat (1). The system further has a coupling connection seat (5) and an overload protection element (6), wherein the coupling connection seat (5) comprises a base and a coupling connection part connected as one with the base. The base is connected to a rear face of the mounting seat (1) by means of the overload protection element (6). The coupling connection part passes through a through hole (7) provided in the middle of the mounting seat (1) and is connected with the coupling buffer by means of the coupling end pin (4). The coupling connection part is closely fitted with the through hole (7). The front installed suspension system has a simple structure and is lightweight.

IPC Classes  ?

• B61G 9/04 - Draw-gear combined with buffing appliances
• B61G 9/22 - Supporting framework, e.g. cradlesSpring housings

Abstract

A compatible train lifting unit of a pit-type train lifter comprises a frame (9), a support (3), a lifting column (2) and a lifting motor (5) mounted on the frame (9). The support (3) is located on the top of the frame (9) and is connected with the top of the lifting column (2). The lifting column (2) is located in the frame (9) and is connected with a motor shaft of the lifting motor (5) through a screw rod nut (4). A guide limit mechanism used for limiting movement of the lifting column (2) is mounted on the frame (9) and is connected with a running mechanism mounted on the train lifter. A support telescoping mechanism is connected to the support (3). By the aid of the running mechanism, the compatible train lifting unit can move automatically to meet the requirement for different sizes along a rail direction of B-type urban rail vehicle frame and point. By the aid of the support telescoping mechanism, the support (3) is telescopic to meet the requirement for different transverse widths of the B-type urban rail vehicle frame and point.

IPC Classes  ?

• B66F 7/14 - Lifting frames, e.g. for lifting vehiclesPlatform lifts with platforms supported directly by jacks by mechanical jacks screw-operated

Abstract

Disclosed is a segmented inverting cover plate apparatus for an underfloor vehicle lifting jack. The apparatus comprises a cover plate, the cover plate being of a segmented structure, 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 hinged by means of a pin shaft. An anti-inversion block (5) is provided directly below the pin shaft, the anti-inversion block (5) being connected to the first movable cover plate (4) by means of the pin shaft. 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), one end of the inverting arm (3) is connected to the anti-inversion block (5) by means of a bearing, the other end is connected to a powered push rod (1) by means of the pin shaft and an oil-containing bearing, and the powered push rod (1) is installed on a powered push rod mounting seat (2). The advantages of the present invention are: 1. in the course of overhauling, the lifting of a jacking element does not need to open the inverting cover plate; 2. after being closed, the first movable cover plate will not occupy the limited overhauling space, reducing safety risks for personnel performing the overhaul; and 3. various models of vehicle lifting element can be used.

IPC Classes  ?

• B66F 7/28 - Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
• E04H 5/06 - Pits or building structures for inspection or services
• E02D 29/14 - Covers for manholes or the likeFrames for covers

Abstract

Disclosed is 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). One end of the compression rod (2) is connected to the movable housing (1) via a torsion spring (5), keeping the compression rod (2) and the bearing connector (3) in a locked state; an unlocking driving mechanism is provided on the outside of the movable housing (1), and is in an unlocked state when the protrusions (6) face the grooves (7), in which case, the movable housing (1) and the bearing connector (3) can slide relative to each other. Since the extension/retraction driving mechanism (9) is provided inside the movable housing (1), volume is reduced, good protection is provided for respective components, and the telescopic mechanism and the locking mechanism are relatively simple in structure, labor-saving, reliable in operation, and can bear relatively large loads.

IPC Classes  ?

• B61G 7/08 - Adjustable coupling heads

Abstract

Disclosed is an air charging and discharging control device for an air spring support system, the control device comprising a site control box (1) and an indoor control box (2). An air charging electromagnetic valve (3) and an air discharging electromagnetic valve (4) are mounted in the site control box (1). A PLC controller is mounted in the indoor control box (2), and the PLC controller is electrically connected with the air charging electromagnetic valve (3) and the air discharging electromagnetic valve (4) respectively, and is electrically connected with a pressure transmitter (5) which is arranged on an additional air chamber (9) of the air spring support system. By controlling the actions of the air charging electromagnetic valve (3) and the air discharging electromagnetic valve (4) with the PLC controller, air is charged into and discharged from the air spring support system so that the air spring support system has different inflation pressures, and static support for different vehicle weights is realized.

IPC Classes  ?

• G05D 16/20 - Control of fluid pressure characterised by the use of electric means

Abstract

A train network device automatic test bed comprises a host, a man-machine interface, an input/output interface, a communication interface, a power interface, a test cable, and an auxiliary test device. The man-machine interface, the input/output interface, the communication interface, and the power interface are all connected with the host. The auxiliary test device is connected with the host through the test cable. The host controls, through the output interface, a central control unit, and a remote input and output module of a network control system of the train, and a gateway module and a power module of an RS485-to-MVB gateway, and detects each part of the network control system of the train. By using the network device automatic test bed in the present invention, an actual test bed is established, thereby achieving the detection on the central control unit (CCU), the remote input and output module (RIOM), the RS485-to-MVB gateway and the power module of each train network control system, thereby effectively improving the production efficiency of the train and the train detection efficiency and providing conditions for localized mass production of the network control system of the motor train unit and the urban rail subway train.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring

Abstract

An urban tram braking system, comprising a brake instruction generation system, a brake control system and an anti-skid system; the brake control system comprises a brake electronic control unit (BECU) and a brake control unit (BCU); the brake instruction generation system transmits a brake instruction to the BECU; according to the brake instruction and the loading force detected by a loading pressure sensor, the BECU calculates and provides a required brake force to a traction control unit; the traction control unit feeds the dynamic brake force signal back to the BECU; the BECU calculates the air brake force to be replenished, and controls the BCU to generate brake cylinder pressure so as to achieve brake control; the brake instruction generation system is provided with a driver controller, an emergency brake switch and a logic control unit connected to the emergency brake switch; the anti-skid system comprises a speed sensor disposed on a wheel axle and an anti-skid exhaust valve located on a brake cylinder tube; the speed sensor detects and transmits a speed signal to the BECU; and the BECU controls the action of the anti-skid exhaust valve according to the speed signal.

IPC Classes  ?

• B60T 11/10 - Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B61H 11/10 - Aerodynamic brakes with control flaps, e.g. spoilers, attached to the vehicles

Abstract

Disclosed is an internal pull-to-break type buffer device for a rail vehicle, comprising a buffer connected to a vehicle hook, a mounting seat (4) connected to the vehicle body and a rotatory shaft (3) connecting the buffer with the mounting seat (4). Both the surface of the rotatory shaft (3) and the top and bottom surfaces of a buffer housing (1) are provided with a step structure, the step structures cooperating with each other to transfer longitudinal tractive forces. A pull-to-break type overload protection element (6) is provided between the step structures and connects the two together. A mounting interface is identical to those in existing hook buffer devices for rail vehicles, and needs no interface adapting device such as a mounting adapter. The vehicle body structure of the rail vehicle needs not to be modified while improving the functionality of overload protection, reducing difficulty in technical implementation. As compared with existing shearing type elements, the overload triggering is more stable, and failures will not easily occur. Since a pull-to-break action for overload protection occurs inside the buffer device, the space needed for the hook buffer device to return backwards is greatly reduced, difficulty in design of the underframe of the vehicle is thus reduced, and the strength of the underframe of the vehicle body is thus increased.

IPC Classes  ?

• B61G 7/14 - Safety devices

Abstract

A ground power supply system for bullet trains includes a main power supply, transmission cables and field sockets. The field sockets include CRH (Chinese Railway High-speed) 1 field sockets, CRH2 field sockets, CRH3 field sockets, and CRH5 field sockets. The CRH1, CRH3 and CRH5 field sockets are directly connected with the main power supply via the transmission cables. The CRH2 field sockets are connected with the main power supply through a single-phase, 400V AC power supply for bullet trains. The system is provided with a simple structure and a reasonable configuration, and can supply auxiliary ground power to various types of bullet trains. By converting a three-phase AC power supply to a single-phase power supply using the single-phase, 400V AC power supply for bullet trains, the system can stably supply power to CRH2 bullet trains without affecting the grid.

IPC Classes  ?

• H02M 5/42 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks

Abstract

A power switching single phase inverter of the train set. The inverter includes a digital signal processor (DSP), and an IGBT module controlled by the digital signal processor (DSP). The digital signal processor (DSP) is used as the controller and processor of the whole inverter. IGBTs are used as power elements. The frequency doubling SPWM technology is used. By the technology, the power switching element IGBT can work at a lower switching frequency, the output harmonic components can be further reduced after frequency doubling is output, and the conflict between the switching frequency and the product efficiency of the switching element and harmonic suppression can be relieved. The technical characteristic of the single phase inverter is greatly improved, the control accuracy is higher, and the function is more perfect. By using the frequency doubling SPWM technology, the requirement for switching frequency is reduced, the efficiency of the integrated equipment is greatly increased, and the temperature rise is less.

IPC Classes  ?

• H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration

Abstract

A power supply charger for a D-prefaced train set includes: a master control module, a power module connected with and controlled by the master control module, a precharge module connected with the input of the power module, a high-frequency transformer connected with the output of the power module, a rectification bridge connected with the output of the high-frequency transformer and direct current output terminals connected with the output of the rectification bridge. The technical performance, the control precision and the function of the charger are improved. The charger exchanges information with a train in real time, and is convenient for a user to search fault information, accurately position a fault point and quickly remove the fault.

IPC Classes  ?

• H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
• B60L 11/18 - using power supplied from primary cells, secondary cells, or fuel cells

Abstract

An anti-rolling sill's suspender for low speed magnetic suspension train includes a suspender barrel (1), a barrel cover (2), a piston rod(3), a lifting lug(4), elastic bodies (5,6) and an articulated joint (7). Both ends of the suspender barrel (1) are provided with the barrel covers (2). The elastic bodies (5, 6) and the piston rod (3) are arranged in the suspender barrel (1). The piston rod (3) stretches out from the barrel cover (2) and connects with the articulated bearing (7) by the lifting lug (4). The elastic body (5) lies in the middle position of the suspender barrel (1). The elastic bodies (6) are arranged on two ends of the elastic body (5). The piston is provided among the elastic bodies (5, 6). The piston rod (3) traverses the elastic bodies (6). The anti-rolling sill's suspender of the invention provides some gyration moment and prevents the vehicle sideslip when it passes the curve.

IPC Classes  ?

• B61F 5/24 - Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
• B60G 21/06 - Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid
• B61G 11/00 - Buffers

Abstract

A transverse adjustment mechanism for a bilateral half-spring type load-carrying head is installed in the housing (1) of the load-carrying head (2) of the lifting unit of an in-ground railcar-lift system, fixedly connected with the housing (1), directly connected to an adjusting unit (3) in the end of the load-carrying head (2), and arranged on the lead screw (4) of the adjusting unit (3). The transverse adjustment mechanism includes an adjusting nut (11), an adjusting nut guide (12), a guiding pipe (110), and a guiding sleeve (15), a nut mounting plate (14), a flange plate (13), a compression spring (19) and a sliding shaft (17). The invention satisfies demand for electrical multiple-unit synchronous lifting operations in compatible in-ground railcar-lift systems. The structure is reliable and practical. It also can be used for other occasions involving heavy loads, long structures and transverse alignment during installation.

IPC Classes  ?

• B61J 1/02 - TurntablesIntegral stops
• B61D 15/00 - Other railway vehicles, e.g. scaffold carsAdaptations of vehicles for use on railways
• B66F 7/08 - Lifting frames, e.g. for lifting vehiclesPlatform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
• B60S 9/14 - Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring

Abstract

The present invention relates to a semi-permanent vehicle coupler for a light rail, which comprises a buffer end and a buffer-free end. The buffer end comprises a buffer, a joint bearing connected with the buffer and a mounting seat, wherein the joint bearing is connected with the mounting seat through a coupler yoke key; the buffer-free end comprises a left pull ring, a joint bearing connected with the left pull ring and a mounting seat, wherein the joint bearing is connected with the mounting seat through a coupler yoke key; the buffer is a double-acting buffer and comprises a shell, a left end cover, a right pull ring, elastic bodies, a central shaft and a middle partition plate, wherein the central shaft passes through the centers of the left end cover and the right pull ring and is glidingly contacted with the left end cover and the right pull ring, one end of the central shaft extends out of the left end cover, the middle partition plate is fixedly arranged on the central shaft and divides the inner part of the shell into two elastic body accommodating cavities, and the elastic bodies are positioned in the two elastic body accommodating cavities; and the other end of the left pull ring is provided with a lug boss, one end of the central shaft extending out of the left end cover is also provided with a lug boss, and the two lug bosses are connected through a connecting ring.

IPC Classes  ?

• B61G 5/00 - Couplings not otherwise provided for

Abstract

An onboard TV for railway vehicle is mounted on the ceiling of a passenger compartment. The onboard TV includes a video display, a triangular support frame and covering plates. The video display is mounted on the triangular support frame, and the covering plates are mounted on both sides of the video display. There is a mounting plate inside the video display. A circuit board is mounted on one side of the mounting plate and a display panel is mounted on the other side of the mounting plate. A power/signal input board, a LED controller board and a backlight high voltage converter are set on the circuit board. The video display tilts downward at an angle, and meets the passengers' viewing angles. And the video display is compatible with interchangeable. The invention uses metal shell, chamfer edges and smooth surface, which ensures that passengers would not injury by touching. It also has a power protection and conversion circuit, which ensures that it would not cause TV failure by passengers' touching.

IPC Classes  ?

• B60R 11/02 - Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the likeArrangement of controls thereof
• H04N 5/64 - Constructional details of receivers, e.g. cabinets or dust covers

Abstract

A vehicle-body integrated test bench comprises a vehicle-body static strength test device, a vehicle-body gas sealing strength test device, a coupler strength test device and a vehicle-body modal test device; strain gauges and displacement sensors are installed on the tested vehicle body, and connected with a data acquisition system; all kinds of railway vehicle tests can be performed on the said vehicle-body integrated test bench, such as vehicle-body static strength tests, vehicle-body steel structure vibration modal tests, vehicle-body part assembly vibration modal tests, vehicle-body gas sealing strength tests and key component strength tests; the said vehicle-body integrated test bench makes a test process more simple and manipulation more convenient.

IPC Classes  ?

• G01M 17/08 - Railway vehicles

Abstract

A semi-permanent draw gear for light rail has one end with a buffer and the other end without a buffer. The end with a buffer includes a buffer (1), a joint bearing (2) connected with the buffer, and a mounting seat (3), wherein the joint bearing and the mounting seat are connected via a coupler yoke key (4). The other end without a buffer includes a left pull ring (5), a joint bearing (2) connected with the left pull ring, and a mounting seat (3), wherein the joint bearing and the mounting seat are connected via a coupler yoke key (4). The buffer is a double-acting buffer, and it has a case (6), a left end cover (7), a right pull ring (8), elastic bodies (9), a central shaft (10) and a middle separation plate (11). The central shaft passes through the center of the left end cover and the right pull ring, while slidingly contacting with them. And one end of the central shaft extends out the left end cover. The middle separation plate is mounted on the central shaft, and divides the case into two holding cavities for elastic bodies where the elastic bodies are located. One end of the left pull ring is fixed with a flange (12). The end of the central shaft extending out the left end cover is also fixed with a flange (12). The two flanges are connected via a connecting ring (13).

IPC Classes  ?

• B61G 9/04 - Draw-gear combined with buffing appliances