118 results about "Track brake" patented technology

The invention relates to a multifunctional braking power testing platform which comprises the components of a base; a power and inertia chamber which is arranged on the base and comprises a power unit and a mechanical inertia unit; a first testing chamber which is arranged on the base and is mounted on one end of the power and inertial chamber; and a second testing chamber which is arranged on the base and is mounted on the other end of the power and inertia chamber, wherein a first braking device in the first testing chamber is different from a second braking device of the second testing chamber. The multifunctional braking power testing platform can be used for disc braking, tread braking, eddy current braking or magnetic rail braking tests of high-speed train and other rail vehicles, thereby reproducing a braking energy conversion process in a 1:1 manner and testing braking performance in real time.

The invention provides a low-floor tramcar bogie. The low-floor tramcar bogie comprises a framework, a swing bolster, a drafting device connected with a car body, a shaft box, a wheel set, a driving device, a foundation brake device, a magnetic track brake device, a primary suspension, a secondary suspension, a dragging device, a stone sweeper and a sand scattering device. The framework comprises side beams and end beams, a cross beam is arranged between the side beams and provided with a driving motor fixing plate and a positioning block, a positioning protrusion is arranged on the positioning block, a driving motor of the driving device is fixed to the driving motor fixing plate, positioning is conducted through the positioning protrusion and a positioning groove, and a cantilever of the driving motor is hung on a transmission shaft of the wheel set. A side bearing box is arranged in the swing bolster, and a catching groove is formed in the edge of the side bearing box. The dragging device connected with the car body comprises an installing plate, a connecting pin, a gasket and a pin shaft. A gap is formed between the pin shaft and the gasket. The magnetic track brake device conducts limiting operation through a magnetic track brake limiting device. By the adoption of the structure, the strength of the framework is improved, the transverse motion amplitude of the swing bolster relative to the framework can be reduced, and the driving device can be reliably supported and fixed.

The invention relates to a special low-floor hinging type rail vehicle for a railroad car. The special low-floor hinging type rail vehicle is in a structure that two compartments and three steering frames are arranged or at least one middle compartment and a middle steering frame are arranged in an extending manner. The special low-floor hinging type rail vehicle is characterized in that for the vehicle, rotatable end part steering frames (1) are always arranged below the front part and the rear part of the vehicle, and middle steering frames (2) are always arranged below each joint respectively; the joints are connecting parts between every two part segments of the vehicle; besides, two adjacent vehicle bodies of the vehicle are mounted on each middle steering frame(2) in a rotatable manner, each of the vehicle bodies is positioned in respective attachment points (3) , elements of primary and secondary elastic devices (5) are positioned in spaces between pairs of independent mounted wheels, and in particular, a motor, a gear case, a disk-shaped brake and a driver and a brake (6) of a track brake are positioned on the outer sides, which are opposite to the longitudinal axis of the vehicle, of the wheels, so that even a motherboard is on the steering frames, the motherboard is also at a low-standard level.

The invention discloses a connecting device of a magnetic track brake and a magnetic track brake apparatus, belonging to the field of parts used for rolling stocks. In order to solve the problems of huge size, high production cost and complicated maintenance of the connecting device of the existing magnetic track brake apparatus, the connecting device of the magnetic track brake comprises a connecting rod component of which one end is connected to the bottom of an axle box body, and a spring regulating device and a wearing plate assembly are arranged at the other end of the connecting rod component, wherein the spring regulating device is used for regulating the vertical position of the magnetic track brake; and the wearing plate assembly is arranged on a bogie frame and used for limiting the horizontal and vertical displacements of the magnetic track brake. The magnetic track brake apparatus comprises the magnetic track brake, and two ends of the magnetic track brake are connected with the bottom of the axle box body respectively through the connecting devices of the magnetic track brake. The invention has the advantages of simple structure and low production and maintenance cost and is reliable to install, simple to debug and convenient to disassemble and maintain.

The invention discloses a trailer bogie which comprises a frame, an axle box, a wheel set, a primary suspension, a secondary suspension, a brake device, a magnetic track brake device and a traction device. The frame comprises side beams and a transverse beam. Brake installation bases are arranged on the transverse beam. The brake installation bases include the upper brake installation base and the lower brake installation base. The upper brake installation base comprises a brake side plate and a brake top plate. The brake side plate extends upwards in an inclined manner from the transverse beam, is bent outwards and then extends towards the outer side. An open slot larger than the semicircle is formed in the outer end of the brake side plate. The brake top plate extends outwards from the transverse beam, is bent to extend upwards in an inclined manner and then is bent to extend towards the outer side. A cavity is formed between the brake side plate and the brake top plate. The magnetic track brake device comprises a first magnetic track fixing plate and a second magnetic track fixing plate. The trailer bogie can improve the rigidity of the brake installation bases, the brake device is conveniently assembled and disassembled, the installation stability of the brake device is good, the magnetic track brake device is conveniently assembled and disassembled, and the cost of the magnetic track brake device is lowered.

A rail cum road vehicle(RCRV) running on rail tracks or on plain roads, includes a gas powered hybrid engine coach linked to and pulling one or several passenger coaches or goods vehicles, all of which in common are fitted with pneumatic rubber wheels, steel wheels, air suspension system with hanger brackets, air brakes and couplers. The air suspension system will lift the axles of the rubber wheels for rail travel, and it will lift the steel wheels to nm on plain roads. Its regenerative braking system produces electricity to run the motor of an air compressor unit or the vehicle itself. The engine power is transmitted to the steel wheels and the rubber wheels via crown/differential boxes and sprockets and chains. All of the RCRV are fitted with ‘advanced light weight rail tracks brakes’ and ‘corrugated concrete track to engage with the corrugated tread rubber wheels’ for instant braking. The circular chassis bogie at rear end helps the RCRV on tracks and on road comfortably negotiate. The ballast-less economy rail track with lesser numbers of light weight sleepers is bolted to the ground for comfortable journey with less noise.

The invention discloses a railway vehicle frame and a bogie. The railway vehicle frame is a layered box-like frame; the frame is provided with a cantilever type motor suspension beam; the height of an upper cover plate of the motor suspension beam is larger than that of a cross beam upper cover plate of the frame; the upper cover plate of the motor suspension beam is fixedly connected with the cross beam upper cover plate of the frame through an upper cover plate on a frame side beam; a mounting space for a magnetic track brake is formed on the frame; the mounting space for the magnetic track brake is positioned under the motor suspension beam; and a secondary suspension mounting seat is arranged at the middle part of the frame side beam. According to the invention, 100% of low-floor target can be realized, the taking area is large, the strength of the layered frame is great and the railway vehicle frame satisfies lightweight requirements.

The invention discloses a dual-purpose vehicle capable of travelling on a high-orbit railway and a highway and a road matching system. The main characteristics are that: a front wheel of an original vehicle is added with a front combined wheel of a track wheel, and a front axle is provided with a front wheel coaxial rotation and directional lock system; and a rear wheel is added with a rear combined wheel of the track wheel, a track brake is added, and an original differential is modified into a multifunctional differential suitable for travelling on two roads. In the road matching system for the dual-purpose vehicle, a specifically designed high-orbit railway, and a solid conversion travelling platform, a movable conversion travelling platform and a whole switch platform for conveniently selecting a road for travelling by the dual-purpose vehicle are paved on two sides of the highway. The dual-purpose vehicle capable of travelling on the high-orbit railway and the highway of the invention can travel on the railway, also can travel on the highway, and can conveniently and rapidly change the travelling, realize energy-saving transport, ensure the flexibility, improve the safety, improve the traffic amount, reduce the mechanical wear between a rubber wheel and each system of the vehicle, and reduce the road maintenance cost.

A miniature passenger train running on both the special single convex track and road for visiting natural scenery or entertainment is composed of power engine, multiple chair coaches with track driver, multiple chair coaches with track brake, and automatic chair levelling device. It can run on slope or in shallow water.

The invention discloses a suspended type monorail train bogie driving and braking device. The suspended type monorail train bogie driving and braking device comprises a first gear case, a second gear case, a traction motor, a first magnetic track braking device and a second magnetic track braking device, wherein an output shaft of the traction motor is simultaneously connected with an input shaft of the first gear case and an input shaft of the second gear case through coupling joints, the first magnetic track braking device and the second magnetic track braking device are respectively fixed to two sides of the first gear case and the second gear case. Integration of a driving device and a braking device is achieved, an integral structure is formed, accordingly the size of the device is decreased, the structure is compact, and lightweight design is achieved. In addition, the whole structure is reasonable and stable in driving and braking, and the braking device and the driving device are directly connected so that integrality is good during braking and driving, and using effect is good.

The invention relates to a hydraulic braking system of a low-floor tramcar and belongs to the technical field of rail vehicles. The hydraulic braking system comprises a hydraulic brake control system,a basic brake device and a magnetic rail brake; the hydraulic brake control system comprises a speed sensor, a load sensor and brake control devices, wherein the speed sensor, the load sensor and thebrake control device are arranged on each bogie; each brake control device can independently control the braking force of the bogie and comprises an electronic brake control unit and a hydraulic brake control unit; and a communication system arranged between a command generation system and the hydraulic brake control system includes a first communication line for information interaction between the brake command generation system and a plurality of brake control devices, and a second communication line for information interaction between two adjacent electronic brake control units. Based on the improvement of the braking system structure, the braking system can be flexibly configured according to vehicles in different groups to facilitate modular design, and can be widely applied to the fields of manufacturing such as rail vehicles.

The invention for the operative monitoring of track brakes, according to which an electric current passes through a winding of a brake magnet, measures the electric current (i2, i4) and compares the temporal progression of the measured current (i2, i4) with a saved temporal progression of a reference current (i1, i3). In particular, the comparison is achieved by claculating the difference between the measured current and the reference current. Preferably, the difference between the measured current and the reference current is temporally integrated and compared with a threshold value. To determine a magnetic coupling between the track brake and the track, a calculation is made as to whether the measured current has local minima (e min) and/or local maxima (e max) during the activation of the track brake, only the temporal progression of the measured current as said current increases being subjected to a comparison with the reference current. The current is preferably activated in pulses, with the comparison of the measured current and the reference current being restarted with each pulse.

The invention discloses a permanent magnet track brake. An outer ring of a permanent magnet axis is provided with permanent magnets of which the number is even; N and S poles of the permanent magnets are arranged alternately at intervals in turn along the axial direction of the permanent magnet axis in a way that the polarities are opposite; the permanent magnets with the same polarity are arranged symmetrically about the central axis of the permanent magnet axis at intervals; clapboards are arranged at transverse and longitudinal gaps of the N and S poles of the permanent magnets; pole shoes are arranged symmetrically on two sides and fixedly arranged close to the permanent magnets; the pole shoes correspond to S and N poles of the permanent magnets in the axial direction of the permanent magnet axis, the length of the pole shoes is consistent with that of the N and S poles, and the number of the pole shoes is the same as that of the permanent magnets; the clapboards are extended to gaps of adjacent pole shoes; eddy current braking and friction braking are realized according to different running speeds of railway vehicles, the abrasion of the pole shoes and rails is avoided, and the braking is realized and the service life of the pole shoes is prolonged simultaneously; the braking effect is improved; and the braking force is changed by controlling the rotating angle of the permanent magnet axis so as to realize safe and stable braking of the railway vehicles.

The invention discloses a uniform type braking force balancing device and method of magnetic track brakes on both sides of a rail train. According to the uniform type braking force balancing device and method of the magnetic track brakes on both sides of the rail train, a front pressure sensor and a rear pressure sensor are arranged between force transmission boards of the magnetic track brakes and a force transmission column of a train steering rack; each magnetic brake is provided with six iron cores, and every iron core is wound with three coils; the rear end of the first coil of every iron core is directly connected with the negative electrode of storage batteries, the front end of the first coil of every iron core is connected with the positive electrode of the storage batteries through switches K4 and K1; the rear end of the second coil of every iron core is directly connected with the negative electrode of the storage batteries, and the front end of the second coil of every iron core is connected with the positive electrode of the storage batteries through switches K3 and K1; the front end of the third coil of every iron core is connected with the positive electrode of the storage batteries through switches K2 and K1, and the rear ends of the third coils of the six iron cores are connected with the negative electrode of the storage batteries through switches K5, K6, K7, K8, K9 and K10 respectively. The uniform type braking force balancing device and method of the magnetic track brakes on both sides of the rail train can effectively avoid brake deviation of the train due to the fact that the magnetic track brakes on both sides of the same steering rack generate overlarge brake force difference in different gear positions, and accordingly improves the braking safety of the rail train.

The invention relates to a rail transit magnetic track brake provided with horizontal magnet exciting coils and applied to rail transit vehicles. A magnet exciting coil assembly of the magnetic track brake is transversely and horizontally arranged in an iron core unit. The magnet exciting coils are totally arranged in the iron core unit. The magnetic flux generated by the magnet exciting coil is almost completely closed in an iron core. Large brake force is provided by means of a few magnet exciting coils or low exciting current. The utilization rate of the magnetic flux of the magnet exciting coils is increased, and the conversion rate of brake force is increased. The magnet exciting coils are completely arranged in the iron core. Two end assemblies and the iron core unit form an inner cavity wrapping the magnet exciting coil assembly together, and it is guaranteed that the magnet exciting coils can be fully protected; and the reliability of the magnetic track brake is improved. When the rail transit magnet track brake acts, the lower end face of a barrier clearing plate is in contact with the upper end face of a track prior to the iron core unit, and foreign matter possibly existing on the surface of the track is removed; and it is guaranteed that pole shoes are in good contact with the surface of the track, and large brake force is obtained.

The invention discloses a power truck for a 100% low-floor vehicle. The power truck comprises a framework and two axels. The framework comprises two side beams and two cross beams. The two ends of each axel are respectively connected with an axle box, an elastic wheel and a brake disc and are installed at the bottom of the corresponding side beam. A sand box is arranged on the top of one end of each side beam. An air compressor is installed on each sand box. The middle portion of each side beam is recessed, and a transverse stop is arranged on the inner side of each side beam. A secondary suspension mounting base of the two cross beams is arranged outside the side beams. A secondary suspender, a vertical stop and a vertical damper are arranged on the secondary suspension mounting base. A magnetic track braking device is connected between the every two axle boxes on the same side. The ends, which are the same, of the two side beams are respectively provided with a traction rod. The ends, which are different, of the two side beams are provided with a transverse damper and a braking clamp respectively. The braking clamp is connected with a braking release unit and a braking hydraulic unit. All the components except the traction rod are symmetrical about the center of the framework. By means of the power truck, a low floor surface of the vehicle is overall through, and the specification requirements of the 100% low-floor vehicle are met; the power truck can rotate by 180 degrees as a whole to be used, thereby being high in flexibility.

The invention provides control system and method for an electromagnetic type magnetic track brake. The control system comprises the electromagnetic type magnetic track brake, a control unit, a power supply control module and a power supply; the control unit is connected with the power supply control module and connected to the power supply through a controllable switch, and the control unit is used for turning on the controllable switch after receiving a braking signal through a vehicle-mounted bus, comparing supply voltage output by the power supply with a set voltage value, and sending a control signal to the power supply control module when the supply voltage is less than the set voltage value; the power supply control module is connected with the electromagnetic type magnetic track brake and connected to the power supply through the controllable switch, and the power supply control module is used for receiving the control signal, then regulating the supply voltage to be not less than the set voltage value and inputting to the electromagnetic type magnetic track brake; the electromagnetic type magnetic track brake is used for closing a track under the control of the supply voltage so as to brake. With the adoption of the control system and method for the electromagnetic type magnetic track brake, the sufficient braking capacity of the electromagnetic type magnetic track brake is ensured, degaussing can be performed, and the flexible application of the magnetic track brake is achieved.

The invention discloses a control circuit of a vehicle alert trigger mode. The control circuit comprises a control source. The control source is connected with a driver controller alert handle switch, an independent alert switch, a sand spreading switch, a magnetic track brake switch and an electric whistle switch. The driver controller alert handle switch, the independent alert switch, the sand spreading switch, the magnetic track brake switch, the electric whistle switch and a driver controller handle are all connected into a TCMS module. The TCMS module is in communication with a VCU/TCU.

The invention discloses a method for preparing a macromolecular composite friction material. The friction material consists of a buffer layer and a friction layer, wherein the buffer layer is made of a rubber matrix macromolecular composite material, and the friction layer is made of a resin-based macromolecular composite material. A track brake friction piece made of the friction material is light and easy to install; in the braking process, when the friction piece is in contact with a wheel, the wheel is not damaged, and the noise is low in the braking process; and in the absence of other substances harmful to the environment such as asbestos in components of the friction piece, the friction piece is environment-friendly and does not have pollution.