60results about How to "Good curve passing performance" patented technology

The invention provides a traction device for a suspended monorail vehicle. The traction device is fixedly connected with a sleeper beam above a bogie frame. The traction device comprises a center pin inserted into the center of the interior of the bogie frame, and a traction base connected to the lower end of the center pin in a sleeving mode, wherein a connecting plate is arranged on the traction base, parallel traction pull rods are arranged at the two ends of the connecting plate perpendicular to the connecting plate in a zigzag mode, one end of each traction pull rod is hinged to the connecting plate of the traction base, the other end of each traction pull rod is hinged to a traction pull rod installation base, an elastic element is arranged at the position where the center pin is connected with the traction base in the sleeved mode, and an elastic transverse stopping block is transversely arranged inside the bogie frame. According to the traction device, large transverse force is transmitted through the elastic transverse stopping block and the center pin; the movement of a vehicle body relative to a bogie is fully guaranteed by means of an elastic rubber joint through the traction device provided with the center pin and the two pull rods arranged in the zigzag mode; meanwhile, the characteristic of the traction pull rods arranged in the zigzag mode that centering performance is high is fully utilized, traction force and braking force are well transmitted, and the curve passage capacity of the vehicle is improved.

The present invention relates to a controllable coupler of magnetorheological coupling wheel pair, belonging to the field of railway rolling stock technology (including urban guideway vehicle technology). It is characterized by that said invention utilizes the characteristics of magnetorheological coupling wheel pair which requires the magnetorheologic fluid to must have higher viscosity when the magnetic field is zero, it utilizes paste-like material or colloidal material with high viscosity as carrier, and utilizes permanent magnet whose surface is equipped with a circular groove to provide initial magnetic field so as to make the magnetorheological fluid always possess higher yield stress, so that said invention can make vehicle have good dynamic property.

The invention relates to an active radial system for a rail train. The active radial system comprises a train level controller, a line information measuring unit, train control positive displacement servo controllers and action executing units. Train bodies of the rail train are each provided with one train control positive displacement servo controller and four action executing units connected with the train control positive displacement servo controller, and the four action executing units are symmetrically arranged on the two sides of a front bogie and the two sides of a rear bogie of each train body correspondingly. The line information measuring unit is arranged on the head train body. The line information measuring unit, the train control positive displacement servo controllers and a fault guiding safety unit are all connected to the train level controller, and the train level controller controls the system to work in a precise type autonomous control mode, in a precise type dependency control mode and in a head train guiding type autonomous control mode. According to the active radial system for the rail train, compared with the prior art, the speed of the rail train passing a curve on an existing line can be increased, the operating efficiency is improved, and meanwhile a fault guiding safety function is achieved.

The invention discloses a differential mechanism coupling wheel set used for an urban rail vehicle. According to the coupling wheel set, an independent wheel set on the left side and an independent wheel set on the right side are coupled through a high-friction self-locking differential mechanism, and the high-friction self-locking differential mechanism is provided with a driving and driven friction plate set which can provide pre-tensioning friction torque so that the differential mechanism can be locked by itself. In a linear segment and a major radius curved segment, the different between the friction torque of a left wheel track and the friction torque of a right wheel track is smaller than the pre-tensioning friction torque of the driving and driven friction plate set, and at the moment the differential mechanism is locked, so that the left wheel and the right wheel are coupled together to rotate synchronously and have the self-guiding and self-centering capacity of traditional wheels; in a minor radius curved segment, the different between the friction torque of the left wheel track and the friction torque of the right wheel track is larger than the pre-tensioning friction torque provided by the driving and driven friction plate set, at the moment the differential mechanism is unlocked and starts a differential speed, so that the left wheel and the right wheel have different rotation speeds, and the vehicle can pass through a minor radius curve smoothly. The wheel set solves the problem of wheel track abrasion of the urban rail vehicle and the problem of passing through the minor radius curve and has the same connector as a transmission wheel set, so that interchangeability is good.

The invention discloses a bogie with internally-arranged axle boxes for a broad-gauge subway vehicle. The internally-arranged axle box structures are adopted; first hanging devices adopt quasi-rotary-arm-type positioning, spiral steel spring sets and rotary arm positioning rubber joints are symmetrically arranged on the two sides of axle box bodies, and stiffness matching is conducted through therotary arm positioning rubber joints; second hanging devices comprise air springs, vertical vibration reducers, horizontal vibration reducers, side-rolling prevention torsion bars and the like, thus vibration and impact are reduced, and taking comfort is improved; basic braking devices comprise axle-mounted disc-type braking units and are arranged on the outer sides of wheels; a traction motor isfully suspended, and gear transmission is two-stage decelerating transmission; and adapters are mounted at the axle ends for providing mounting interfaces for speed sensors. The problem that a bogie cannot be provided with a current collector due to the 1676 mm wide gauge of an Indian subway and the excessively-small distance between a third rail and a running rail is solved; the torsion stiffnessof the bogie and the horizontal span of the first hanging devices on the left and right sides are reduced, and the curve negotiating property is improved; and the structure is compact, the function is complete, and safe operation of the vehicle can be ensured.

The invention relates to a bare weight two-stage friction-type lower side bearing which comprises an inner seat of the side bearing and an outer sleeve of the side bearing which are sleeved and matched with each other, wherein a pressing block of the inner seat of the side bearing is arranged at the upper part of the inner seat of the side bearing; a heavy-load friction plate is arranged at the top part of the pressing block of the inner seat of the side bearing; a pressing plate of the outer sleeve of the side bearing is arranged at the upper part of the outer sleeve of the side bearing; a non-load friction plate is arranged at the top part of the pressing plate of the outer sleeve of the side bearing; the friction factor muk of the non-load friction plate is greater than the friction factor muz of the heavy-load friction plate; an elastic element for controlling the vertical position relation between the inner seat of the side bearing and the outer sleeve of the side bearing is arranged between the inner seat of the side bearing and the outer sleeve of the side bearing; and the mechanical property of the elastic element enables the non-load friction plate and the heavy-load friction plate to meet the following position relation: in an empty car state, the horizontal position of the non-load friction plate is higher than the that of the heavy-load friction plate, and in a heavy car state, the horizontal position of the non-load friction plate is flush with that of the heavy-load friction plate. A railway freight car bogie assembled with the lower side bearing has higher critical speed in the no-load state and better curve negotiation capacity in the heavy-load state.

The invention discloses a steering frame of a railway track car with flaw detection devices, which comprises a framework, the upper part of the framework is provided with a traction seat connected with a car body through a traction device; the lower part of the framework is provided with an elastic node seat which is connected with a shaft box body through an elastic node; the shaft box body is connected with wheel pairs; a support spring arranged on the framework, a horizontal shock absorber and a two-system vertical shock absorber form a two-system suspension system of the car body; a shaft box spring with one end supported at the upper part of the shaft box body and the other end supported at the lower end of the framework and a one-system vertical shock absorber arranged on the framework form a one-system suspension system of the car body; the end part of the framework is provided with a unit brake; the shaft box body is provided with flaw detection devices arrange at intervals along the direction of steel tracks; and detection wheels of the flaw detection devices are in direct contact with steel tracks between the wheel pairs. According to the invention, the manufacturing cost is lowered, the shock of the detection wheels is reduced, the flaw detection accuracy rate is improved; moreover, the steering frame has the advantages of good operation quality is good, high pass curve performance, small horizontal force of wheel tracks, reliable braking performance and great convenience in maintenance and can completely meet the requirement of steel track flaw detection with high flaw detection speed.

The invention discloses a locomotive three-axis radial bogie. In order to reduce wheel set abrasion and improve the curve passing performance of a locomotive, the locomotive three-axis radial bogie is mainly composed of three sets of wheel set shaft box assemblies, three sets of driving units, a framework, a single stage suspension device, a secondary suspension device, a set of traction device, three motor suspension devices, a brake device, and a radial device. The framework is mainly composed of a front end beam, two side beams, a traction beam, a middle beam, and a back end beam. The radial device is mainly composed of a pivot, a front guide beam, a transition coupling pull rod, a supporting rod, a turning arm, a coupling pull rod, and a back guide beam. The locomotive three-axis radial bogie has the capacity of automatically tending to a radial position, improves the curve passing speed of the locomotive, and reduces wheel set angle of attack, and reduces wheel rail transverse force, so that wheel rail abrasion is reduced, and the curve passing performance of the locomotive is improved.

The invention provides a railway vehicle and a hook buffer device thereof. While curve pass is realized, a connecting structure is simplified, a fit clearance is reduced, and the fitting tightness between a tail hook pin and a pin hole is improved. The hook buffer device comprises a front slave plate base, a rear slave plate base and a bidirectional buffer, wherein the front slave plate base and the rear slave plate base are connected with a vehicle body; the bidirectional buffer is fixedly connected between the front slave plate base and the rear slave plate base and is provided with a carrying body with a buffering function and a connecting component acting on the carrying body; the connecting component is hinged to a vehicle hook through the tail hook pin; the tail hook pin extends up and down; a rotating component is assembled between at least one of the connecting component and the vehicle hook, and the tail hook pin, so that the connecting component and the vehicle hook relatively rotate in a vertical plane; the rotating component is matched with the connecting component and the vehicle hook, so that relative displacement between the connecting component and the vehicle hook in the front-back direction is limited. Due to the fact that the vehicle hook and the connecting component can be relatively fixed in the front-back direction, no matter in an assembling state or various working states, the longitudinal impact caused in a vehicle driving process can be obviously reduced, the usability of the vehicle is improved, and the abrasion is reduced.

The invention provides a sky train body and a track structure and belongs to the technical field of rail traffic. The left side and the right side of a track beam whose cross section is of an H-shaped structure are vertical planes; the upper end and the lower end of the track beam are of groove structures; the back surface of a train body is in interference fit with the vertical planes of the track beam; vibration absorbing devices on which upper guide wheels are suspended are arranged at the upper part of the train body; the shafts of the upper guide wheels are parallel to the vertical groove edges; the upper part of the train body supports the vertical planes on the internal sides of the groove edges of the track beam through the upper guide wheels in a contacting manner; the lower part of the train body supports the vertical planes of the track beam through lower guide wheels with vibration absorbing springs in a contacting manner; a protruding suspending structure is arranged at the upper part of the train body; the suspending structure on the back surface of the train body is in contact with planes of the grooves of the track beam through driving wheels arranged under protruding structures; traction motors and transmission systems thereof are arranged within the protruding structures at the two ends of the train body; a longitudinal beam protruding out of the bottom plane is arranged under the train body; vertical limiting wheels are arranged at two ends of the longitudinal beam; and lower limiting wheels are arranged at the middle part and two ends of the longitudinal beam.

The invention belongs to the technical field of a car hook for a railway wagon and specifically relates to a neck pitching type car hook. The problems of the present car hook are solved. The neck pitching type car hook comprises a hook head, a hook body and a hook tail, wherein a horizontal central line of the hook head is pitched up and is 35-50 mm higher than the horizontal central line of the hook body; a pitching part is arranged on the front part of the hook body and is connected with the hook head; a downward extending type anti-falling platform is arranged on the lower part of a hook tongue of the hook head; the inner and outer outlines of the downward extending type anti-falling platform are the same as the outline of a hook tongue drawing surface of the car hook; a rib platy platform is arranged at the bottom of the downward extending type anti-falling platform. The neck pitching type car hook has the advantages that the distance from the floor surface of the railway wagon or the bearing surface of a container to a rail surface and the height of the center of gravity of an empty and load car are suitably reduced, the loading and unloading for goods or containers are convenient and the dynamic property of the car is increased.

The invention discloses a superconducting electric electromagnetic hybrid maglev train, which comprises L-shaped suspension frames and an I-shaped ground rail, and is characterized in that the upper end of each suspension frame is connected with a train body through an air spring; the suspension frames are arranged on the two sides of the ground rail, and the suspension frames and the ground railare arranged at intervals. A plurality of superconducting magnets is arranged at the lower end of each suspension frame. An 8-shaped upper-layer suspension coil and an 8-shaped lower-layer suspensioncoil are arranged at the upper end and the lower end of the ground rail respectively, an upper-layer power generation coil and a lower-layer power generation coil are arranged at the lower end of thesuspension frame, and the upper-layer suspension coil is electrically connected with the lower-layer suspension coil; and a propelling coil is arranged above the upper-layer suspension coil. The invention has the advantages of large operation air gap, self-stabilization, good suspension guiding dynamic performance, better curve passing capacity, higher superconducting magnet magnetic field utilization rate and lower track construction cost.

The invention provides a trailer bogie for metric rails, comprising a framework in a cast structure, two half shaft wheel pairs, two sets of air disc brakes, four air springs and two height control valves, wherein the two half shafts are respectively installed in two end holes of the framework in a pressing manner; each half shaft is equipped with three sets of bearings, the wheel is supported onthe half shafts through the first bearing and the second bearing, a brake disc is supported on the half shafts through a third bearing; the brake disc is fixedly connected with the wheel; the air disc brakes are installed at the end parts of the half shafts through brake supports and are fixedly connected with the half shafts through end shaft connection part; four air springs are installed at the four corners of a truss; the height of each air spring is controlled by a height control valve; the truss is equipped with two draw pull rods and two positioning rods, and the center of the truss isprovided with a horizontal backstop. The trailer bogie provided by the invention has compact and reasonable overall structure and good carve passage capacity, and is more suitable for the requirementof metric rail lines and narrow bodies in urban light rail transportation.

The invention relates to a connection mechanism for a locomotive and a radial mechanism for a three-axle bogie of the locomotive. The connection mechanism comprises a pivot, wherein the pivot comprises a pivot body and a location end head at the top end of the pivot body, and a rubber joint is sleeved outside the pivot body. The radial mechanism comprises a framework and a guide beam, wherein the framework is connected with the guide beam via the connection mechanism, a location hole corresponding to the location end head is formed in the framework, a central hole is formed in the guide beam, the location end head at the top end of the pivot body penetrates in the location hole of the framework, the lower end of the pivot body penetrates in the central hole of the guide beam, and the rubber joint is arranged between the inner wall of the central hole of the guide beam and the pivot body. According to the invention, the guide beam can be installed on the framework via the connection mechanism and can rotate around the bogie framework, so that the bogie can automatically realize a radial function while passing through a curve, and the curve passage performance of the locomotive is further improved.

The invention provides an active radial control method and system for a train. The control method comprises the following steps: S1, acquiring train running route information and train driving information; S2, calculating and generating an active radial control instruction according to the train running route information and the train running information; and S3, controlling a wheel set to be in a radial position according to the active radial control instruction. The control system comprises a signal acquisition device, an upper computer and a radial execution mechanism. According to the active radial control method for the train, the bogie has the good curve passing capacity, friction between wheel rails is reduced, the service life of the wheel rails is prolonged, whistling generated by wheel rail friction when the train passes through the curve is eliminated, and the radius of the curve where the train passes through is reduced. And the running stability, flexibility and safety of the train are improved.

A multi-purpose flatcar suitable for plateau, high and cold and long and large downhill slopes comprises a flatcar body, a bogie, a car coupler buffer device, a braking system and an intelligent detection system. The bogie is a built-in axle box suspension welding bogie and is composed of an axle shaft device, an axle box, a suspension device of the axle box, a framework, a brake device, an elastic side bearing and a center plate connecting device, the axle shaft device is composed of an axle, wheels, a brake disc and bearings, the two bearings are arranged on the inner sides of the two wheels, and the brake disc is located on the inner sides of the two bearings. Axle boxes and suspension devices thereof are arranged on the inner sides of the wheels; the coupler buffer device is an intelligent coupling device; the intelligent detection system is arranged on a bogie and comprises a power generation device and a detection device. The multi-purpose flatcar integrates intelligent detection and intelligent coupling, reduces manual operation in a severe environment, greatly reduces manual labor intensity, is high in curve passing performance, and is suitable for plateau, high and cold and long and large downhill environments.

The invention relates to a railway vehicle bogie which comprises an elastic middle intersecting supporting rod structure located between two side frames of the bogie, the side frames which are respectively provided with a narrow side frame pedestal opening, narrow bearing carrying saddles matched with the side frames and a series of elastic pads. The railway vehicle bogie can remarkably improve the rhombus-resistant performance of three-piece bogie of a wagon and the parallelogram (rhombus) phenomenon between the two side frames and two wheel pairs of the bogie is prevented, so that a curve negotiation performance of a vehicle is improved and the critical speed of snaking motion is increased. In addition, a small bogie rigid wheel base is selected by the railway vehicle bogie, the weight of the railway vehicle bogie is reduced, and the railway vehicle load is improved.

The invention discloses a high-speed rail vehicle bogie which is arranged in an inner axle box mode, a hinged framework is supported on the inner side of a wheel set, the curve passing performance ofthe bogie can be effectively improved, the hinged framework is of a double-T-shaped structure, the central axes of cylindrical beams of two T-shaped side beams coincide, one cylindrical beam stretchesinto the other cylindrical beam. Two bearings with a certain transverse span are arranged between the two T-shaped side beams, the two T-shaped side beams can rotate freely, the torsional rigidity ofthe bogie is zero, the uniform load capacity, the line adaptability, the curve trafficability and the high-speed operation stability of the bogie are enhanced. The contradiction between the operationstability and the curve trafficability of a traditional bogie is fundamentally solved, the two primary suspension devices are adopted, the positioning rigidity of the primary suspension devices in all directions can be determined by independent components, the positioning rigidity of the primary suspension devices in all directions can be optimal at the same time, and parameters are more accurateand reliable.

The invention relates to the technical field of train hinge joint, in particular to a single-shaft excursion train hinge system which comprises an end steering structure A, middle steering structuresand an end steering structure B. The end steering structure A is installed at the lower side of an end compartment A, the end steering structure B is installed at the lower side of an end compartmentB, a plurality of middle compartments are arranged between the end compartment A and the end compartment B, the adjacent middle compartments are connected through the middle steering structures, and the end steering structure A comprises a first ball pin, a first ball base, an end bogie A and an end walking wheel A. According to the single-shaft excursion train hinge system, all the bogies adopt one pair of driving or non-driving axles, the bogies except for the end bogies are all arranged between the compartments, the bogies and a compartment chassis are connected in a hinged (pin or ball) mode, and the train applying the hinge system has the advantages that the number of axles is the lowest, the structure is simple, the cost is low, the train is good in integrity, the floor is low, and the curve traffic ability characteristic is good.

The invention relates to a built-in axle box suspension railway wagon welding bogie, which consists of an axle shaft device, an axle box and a suspension device thereof, a framework assembly, a brake device, an elastic side bearing and a center plate connecting device, the axle device is composed of an axle, wheels, brake discs and bearings, the bearings are arranged on the inner sides of the two wheels, and the brake discs are located on the inner sides of the two bearings. A center plate connecting device is installed on the framework assembly, and a guide frame on the center plate connecting device makes contact with the axle box and a spring of the suspension device of the axle box. The axle box and the suspension device thereof are arranged on the inner side of a wheel and composed of axle boxes, locking blocks and the like, the axle boxes are arranged on the inner side of the wheel and matched with bearings on axles, the locking blocks are fixedly connected with the axle boxes, and spring caps of the axle boxes and the suspension device thereof are connected with a guide frame on the framework assembly through hanging rings. The brake device is hung on a brake hanging seat on the framework assembly through a fastener; the two elastic side bearings are arranged on the outer side of the center line of the sleeper beam composed of the framework. The bogie is compact in structure and light in weight, and the curve passing capacity is enhanced.

The invention discloses a diagonal draw bar connection device for railway vehicle wheel pairs, which is characterized in that axle boxes (2) or bearing saddle at different sides on front and rear wheel pairs (11, 12) are provided with draw bar bases (3), and both ends of a diagonal draw bar (4) are hinged on the draw bar bases (3) through hinging components. The device can ensure that the decoupling is performed on the shearing rigidity and the headshaking rigidity between two wheel pairs of the same steering frame, and remarkably improve the shearing rigidity under the condition of not affecting the headshaking rigidity, thereby improving the stability of the operation of vehicles on the basis of not affecting the curve passing performance of the vehicles.

The invention relates to a dragging cushion for a bogie frame of a locomotive. The dragging cushion comprises an upper connecting plate, a lower connecting plate and a rubber compound layer, wherein the upper connecting plate and the lower connecting plate are respectively fixed with locating pins; the rubber compound layer is fixedly connected with the upper connecting plate and the lower connecting plate and is arranged between the upper connecting plate and the lower connecting plate; the rubber compound layer is characterized in that the rubber compound layer comprises at least two rubber layers; and a separating plate is fixed between the adjacent rubber layers. In the dragging cushion, the rubber layers and the separating plates are arranged at intervals and the thickness of the separating plates and the rubber layers is reasonably designed, thereby promoting the axial tangent stiffness and elastic resetting capability of the dragging cushion, ensuring the stable and safe running of the locomotive and achieving excellent linear stability and curve passing capability of the locomotive. In the dragging cushion, the rubber vulcanization of the rubber layers is utilized to fixedly and integrally connect metal parts with the rubber layers, thereby ensuring the bonding strength between the rubber layers and the metal parts, avoiding the phenomena of rubber cracks and separation between metal and rubber of the dragging cushion during a running process and prolonging the service life of the dragging cushion.

The invention provides an empty rail train car body and a track structure, belonging to the technical field of rail transportation. The left and right sides of the track beam with an H-shaped cross-section are vertical planes, and the upper and lower ends of the track beam are groove structures. The back of the car body is matched with the vertical plane of the track beam. The shaft of the upper guide wheel is parallel to the vertical groove edge, the upper part of the car body is supported by the upper guide wheel and the vertical plane inside the groove edge of the track beam, and the lower part is supported by the lower guide wheel equipped with a damping spring and the track beam The upper part of the car body is provided with a protruding suspension structure, and the suspension structure on the back of the car body is in contact with the plane of the groove of the track beam through the drive wheel arranged under the protruding structure, and the protruding structures at both ends of the car body There is a traction motor and its transmission system inside, and a longitudinal beam protruding from the bottom plane is provided under the car body. Vertical limit wheels are provided at both ends of the longitudinal beam, and lower limit wheels are provided in the middle and both ends.

The invention discloses a flexible framework used for a railway vehicle bogie and provided with slewing bearings, the whole framework is H-shaped and is composed of two T-shaped beams and two sets of slewing bearings connecting the two T-shaped beams, each T-shaped beam is composed of a beam extending in the longitudinal direction and a cross beam extending towards the middle in the transverse direction, and the two T-shaped beams are connected through the two sets of slewing bearings. The two sets of slewing bearings are coaxially arranged in the mode that the axes are parallel to cross beams of the T-shaped beams, the cross beams of the two T-shaped beams are hinged along a transverse shaft, the two T-shaped beams can freely rotate around the axes of the two slewing bearings through connection of the two sets of slewing bearings, and meanwhile the two T-shaped beams are connected in an approximately rigid mode in other directions. The bogie adopting the flexible framework has extremely low torsional rigidity, so that the bogie can adapt to line irregularity to the greatest extent and ensure the stability, the cross beams of the two T-shaped beams of the framework are each of an upper-side opening structure, and a center traction device between the cross beams and a vehicle body can be arranged, so that the bogie adapts to a short wheelbase and is beneficial to installation of a driving device; and the compact and light-weight design of the bogie is realized.

The invention discloses an inner axle box bogie adopting a novel flexible framework and a permanent magnet direct drive motor, the framework is generally H-shaped and consists of two T-shaped beams and two sets of slewing bearings for connecting the two T-shaped beams, only the degree of freedom of transverse rotation is released, and meanwhile, the two T-shaped beams are in approximately rigid connection in other directions; by means of the characteristic, the axle box suspension device can adopt a splayed rubber pad which can meet reasonable horizontal positioning and large vertical suspension rigidity between the wheel pair and the framework and is compact in structure and economical in cost, and bearings are arranged on the inner sides of the two side beams, so that the bogie is simple in structure and low in cost. And the purpose of light weight is achieved. The driving device is directly driven by a permanent magnet synchronous motor and is mounted on the left and right inner axle box bodies, a motor shaft suspension and direct drive mode is adopted, a gearbox structure can be avoided, the structure is simple, the axle distance of the bogie can be obviously reduced, and the self weight of the bogie can be reduced.

The invention relates to the technical field of train hinge joint, in particular to a single-shaft excursion train hinge system which comprises an end steering structure A, middle steering structuresand an end steering structure B. The end steering structure A is installed at the lower side of an end compartment A, the end steering structure B is installed at the lower side of an end compartmentB, a plurality of middle compartments are arranged between the end compartment A and the end compartment B, the adjacent middle compartments are connected through the middle steering structures, and the end steering structure A comprises a first ball pin, a first ball base, an end bogie A and an end walking wheel A. According to the single-shaft excursion train hinge system, all the bogies adopt one pair of driving or non-driving axles, the bogies except for the end bogies are all arranged between the compartments, the bogies and a compartment chassis are connected in a hinged (pin or ball) mode, and the train applying the hinge system has the advantages that the number of axles is the lowest, the structure is simple, the cost is low, the train is good in integrity, the floor is low, and the curve traffic ability characteristic is good.

The invention belongs to the technical field of a car hook for a railway wagon and specifically relates to a neck pitching type car hook. The problems of the present car hook are solved. The neck pitching type car hook comprises a hook head, a hook body and a hook tail, wherein a horizontal central line of the hook head is pitched up and is 35-50 mm higher than the horizontal central line of the hook body; a pitching part is arranged on the front part of the hook body and is connected with the hook head; a downward extending type anti-falling platform is arranged on the lower part of a hook tongue of the hook head; the inner and outer outlines of the downward extending type anti-falling platform are the same as the outline of a hook tongue drawing surface of the car hook; a rib platy platform is arranged at the bottom of the downward extending type anti-falling platform. The neck pitching type car hook has the advantages that the distance from the floor surface of the railway wagon or the bearing surface of a container to a rail surface and the height of the center of gravity of an empty and load car are suitably reduced, the loading and unloading for goods or containers are convenient and the dynamic property of the car is increased.

The invention discloses an intermediate-speed magnetic levitation traction frame system, and applies to the field of train traction system control. A frame control scheme with one compartment and double control units is adopted, and each control unit at least comprises one traction inverter and one linear motor unit comprising six linear motors; the output ends of the traction inverters are connected with the input ends of the linear motor units; the six linear motors in each linear motor unit adopt a three-serial connection two-parallel connection mode for wiring to meet the demand for traction of a maglev train. On the premise that the power supply mode of a power supply station and the capacity of each traction inverter are not changed, the system guarantees the end voltage of the linear motors by the adoption of the frame control scheme with double control units for a traction system, and meets the demands for the power design of the linear motors and the traction capacity design of the maglev train.