913 results about "Bogie" patented technology

The invention relates to the technical field of rail transit monitoring, and discloses a multi-sensor fusion rail transit electric passenger car bogie dynamic performance monitoring method. The method comprises the steps that multi-source heterogeneous sensing data such as bogie vibration acceleration time sequence signals, wheel-rail contact force distribution data, bearing temperature gradient data and structural strain field data are collected; analyzing the vibration signal to extract a frequency band energy feature vector, performing spatial gridding mapping on the contact force data to generate a distribution matrix, and performing time-space alignment fusion on the two to form a primary fusion feature set; positioning a bearing temperature anomaly region through a deep convolutional network, and generating a secondary fusion feature set in combination with a structural strain concentration coefficient; and inputting the two-stage feature set into a dynamic performance evaluation model, outputting a performance degradation index set of scores of axle box bearing wear degree, framework fatigue cumulant, wheel set tread damage and the like, generating a maintenance priority sequence and triggering a preventive maintenance instruction according to the performance degradation index set, and realizing accurate monitoring and efficient operation and maintenance management and control of the dynamic performance of the bogie.

The application discloses a bogie covering device, a bogie and a railway vehicle, and relates to the technical field of railway vehicles. The bogie covering device comprises a mounting cross beam, which is used for fixedly connecting to a frame body of the bogie; at least two mounting plates, which are fixedly arranged on the mounting cross beam, and at least one of the mounting plates is used for fixedly connecting to the frame body of the bogie; and at least one of the mounting plates is provided with a containing portion for containing an axle-mounted brake disc, and the bottom of the containing portion is protrusively arranged towards the outer surface of the mounting plate. The bogie covering device in the application can be applied to the bogie with a large-size axle-mounted brake disc; in the process of running, the airflow can be prevented from entering the bogie device through the avoiding holes to generate the aerodynamic resistance, most of the airflow can flow along the bottom surface of the bogie covering device from the outside of the bogie covering device, and compared with the airflow directly flowing through the complex components in the bogie covering device, the aerodynamic resistance can be effectively reduced.

A covered hopper railcar includes a pair of spaced trucks; a three bay covered hopper railcar body on the pair of trucks; and a partition structure separating each bay from an adjacent bay, wherein each partition structure is extending vertically from sloped floor sheets to a roof structure and extending horizontally between side walls of the railcar body, wherein each partition includes a pair of horizontal ribs.

A method for rapidly solving transient dynamics of a crack-containing bearing structure of a bogie belongs to the technical field of bogie structure dynamic analysis, and comprises the following steps: acquiring a three-dimensional geometric model of the bearing structure, the geometric dimension of a crack and the position coordinate dimension of the crack; dividing the finite element model of the bearing structure, and carrying out grid division processing on the crack surface; selecting a main degree-of-freedom node of the finite element model on the surface of the bearing structure and the crack surface; performing substructure analysis on the finite element model of the bearing structure; obtaining a mass matrix, a damping matrix and a stiffness matrix of the finite element model of the bearing structure after the degree of freedom is reduced; carrying out constraint simulation on a crack surface node by adopting a one-way nonlinear rigidity unit; processing constraint boundary conditions; processing the excitation load; and solving a dynamic second-order differential equation set, and judging whether the crack surface is in contact or not. According to the method, the opening and closing effects of the crack can be considered, the transient dynamic response of the crack-containing bearing structure under the action of the external load is obtained, and the solving precision and efficiency are both considered.

The utility model provides a novel rail unloading operation vehicle. A novel rail unloading operation vehicle comprises a hook buffer device, a handrail, a bogie, a boarding ladder, a steel rail traction device, an electrical system, a braking system, a rail unloading device, a welding machine storage platform, a guiding device, a rail shifting device, a vehicle frame and a cab. According to the novel rail unloading operation vehicle, steel rails are deformed to one side from the middle of the vehicle within allowable stress through the vehicle, fall into the center of the rail or the side of the rail through the guide device or directly fall into the rail bearing groove, and are matched with a rail welding vehicle and a rail transporting vehicle to complete transportation, welding and unloading of the long steel rails; the steel rail can pass through the lower part of the cab, so that a transverse displacement space is vacated for rail unloading operation; alignment with a welding machine of a rail welding vehicle is facilitated, the rail unloading position is flexible, and possibility is provided for integrated construction of rail overhaul; the steel rail is moved to the multiple rail unloading positions from the horizontal center position through the guide device, the variable site construction environment can be used, and convenience is provided for follow-up construction.

A railcar modification comprises a pair of spaced trucks; a multiple bay hopper railcar body on the pair of trucks; a hopper floor in the railcar body, wherein each bay of the hopper railcar body has hoppers formed of sloped floor sheets having a hopper floor slope; a plurality of gate adaptors, each gate adapter coupled to the floor sheets of a hopper, wherein the gate adapter includes a plurality of floor sheet panels, a plurality of transition panels and a plurality of gate panels, and wherein a difference in slope angles between the floor sheet panels, transition panels and gate panels combine to form a vertical offset; and a plurality of gates, each gate coupled to one gate adapter.

The utility model relates to a pillow spring assembling and disassembling clamp which comprises an electromagnetic iron core, a coil winding, a pneumatic tool, an ejector pin, a pen-shaped air cylinder, an adjusting gasket, a supporting seat and an installing seat, the electromagnetic iron core is fixedly arranged on the supporting seat, a combination mode of the electromagnetic iron core and the pen-shaped air cylinder is adopted, and the magnetic pole face of the electromagnetic iron core adopts two sections of cambered surfaces and a plane. The two sections of cambered surfaces are used for magnetically attracting bearing springs and damping springs of different sizes respectively, the plane is used for magnetically attracting a wedge or other parts, and the height is set to be the height of the two rings of springs so that the industrial robot can work in the side frame conveniently; the cylinder mounted behind the electromagnet adopts the design of a single-pen cylinder and a round head ejector pin, so that the problem of clamping of multiple cylinders is avoided, the ejector pin round head structure effectively realizes clamping and releasing of an inner spring and an outer spring, the mechanical failure rate is reduced, and automatic disassembly and assembly operation of different types of bogie pillow springs, wedges and other parts is facilitated.

The invention discloses an anti-label noise urban rail train gearbox incremental fault diagnosis method, which comprises the following steps of: segmenting and standardizing collected gearbox fault data of an urban rail train bogie according to a preset length to obtain a fault sample; based on the fault sample, constructing a data set which can be used for class incremental learning; constructing a fault diagnosis model, and performing initial training on the fault diagnosis model by using the data set to obtain a fault diagnosis model after initial training; performing incremental training on the fault diagnosis model after the initial training to obtain a trained fault diagnosis model; and performing fault identification on a to-be-detected vibration signal by using the trained fault diagnosis model to obtain a diagnosis result of the gearbox. According to the method, disastrous forgetting and noise interference can be effectively handled, and the accuracy of fault diagnosis of the gearbox of the urban rail train is improved.

The invention discloses an anti-derailment device for train collision. The anti-derailment device comprises a connecting frame, two sets of steel rail clamping and limiting mechanisms, an inner supporting type limiting mechanism, a detection assembly and a control assembly. The connecting frame is fixedly connected with the bottom of a train bogie; the two sets of steel rail clamping and limiting mechanisms are symmetrically arranged on the two sides of the bottom of the connecting frame. Each steel rail clamping and limiting mechanism comprises a lifting assembly, a connecting arm and a clamping jaw assembly. The inner supporting type limiting mechanism is arranged on the connecting frame and located between the two sets of steel rail clamping limiting mechanisms, and the inner supporting type limiting mechanism comprises two sets of guiding abutting rod pieces and an automatic folding assembly. The two sets of steel rail clamping limiting mechanisms and the inner supporting type limiting mechanisms are actively controlled to cooperatively restrain transverse movement and vertical displacement of the wheel set, the displacement of the wheels is indirectly restrained by limiting the track of the bogie, collision initial kinetic energy is efficiently converted into ground sliding friction work, the guide abutting rod piece abuts against the inner side of the steel rail, and therefore the sliding friction work is effectively converted into ground sliding friction work. And the bogie is ensured to run along a set route in the collision process.

The invention provides a center pin lifting appliance for a metro vehicle bogie, and relates to the field of metro construction, and the center pin lifting appliance is characterized in that an adjusting auxiliary frame is slidably mounted below a lifting lower arm; an adjusting auxiliary seat is slidably arranged on one side of the adjusting auxiliary frame; by means of the X-shaped self-clamping holding claw mechanism formed by the lifting lower arms, efficient and stable automatic centering and clamping can be achieved, the adjusting auxiliary base connected with one side of the lifting arm can make close contact with a center pin column of a metro vehicle bogie, the swinging and overturning risks caused by the high gravity center are effectively eliminated, the safety and stability in the lifting process are remarkably improved, and the lifting efficiency is improved. The problems that shaking and deflection are extremely prone to occurring in the lifting process, the surface and threads of the center pin are collided and damaged, a lifting belt possibly unhooks or slides, remarkable potential safety hazards are brought, and meanwhile the operation efficiency and the overhaul quality are affected are solved.

The invention relates to a rail transit technology, in particular to a train adhesion sensing method and system. When the train system works in a traction, coasting or electric braking working condition, starting an adhesion sensing mode, configuring an adhesion sensing shaft, and detecting the speed of the train; when the train speed is larger than a first train speed threshold value, the current of the adhesion sensing shaft is controlled, so that the traction force or the electric braking force of the adhesion sensing shaft is balanced with the adhesion force of the adhesion sensing shaft; the traction force or the electric braking force of the adhesion sensing shaft is calculated, and the adhesion coefficient of the adhesion sensing shaft is calculated according to the traction force or the electric braking force; the adhesion coefficient of the adhesion sensing bogie is calculated according to the adhesion coefficient of the adhesion sensing shaft, and the adhesion coefficient of the whole train is calculated according to the adhesion coefficient of the adhesion sensing bogie. According to the method, the adhesion condition of the wheel track in the train operation process is sensed in real time, compared with an existing operation design according to a fixed adhesion coefficient, accurate line state information is provided for train operation, and the safety and efficiency of train operation control are improved.

The invention provides a bogie assembling tool and a bogie assembling method, and relates to the technical field of vehicle tools.The bogie assembling tool comprises an operation device and a supporting frame; the operation device comprises a plurality of operation frames, a containing space is defined by the operation frames, the contour shape of the containing space is configured to be matched with the shape of the bogie, each operation frame comprises an operation platform, and the height difference exists between the operation platform and the bottom end of the containing space; the bottom end of the supporting frame is located in the containing space, and the top end of the supporting frame extends out of the containing space. According to the bogie assembling tool, the bogie assembling efficiency is remarkably improved, and the safety in the bogie assembling process is greatly improved.

The invention discloses a track irregularity dynamic detection method based on inertial navigation and non-filtering, which belongs to the field of railway track detection, and comprises the following steps: based on an inertial measurement unit, performing global integrated navigation solution by combining zero-speed information, a speed sensor and a GNSS positioning result to obtain a global reference navigation state sequence; point cloud registration and key point extraction are carried out on the two-dimensional point cloud obtained by scanning the surface of the track to be detected, and key point coordinates are obtained; performing mechanical arrangement of the sliding window inertial navigation system by taking the target chord length as the window length to obtain a bogie motion trail; and performing three-dimensional dynamic lever arm position compensation based on the global reference navigation state sequence, the key point coordinates and the bogie motion trail to obtain a track shape trail: calculating track irregularity parameters, and completing track irregularity dynamic detection. According to the method, track irregularity dynamic detection is realized, band-pass filtering processing is not needed, information loss is less, and waveform distortion can be avoided.

The invention discloses a bogie component vibration fatigue life prediction method considering load periodic evolution, and aims to solve the technical problems that an existing model is coupled in function and low in prediction precision, and a prediction result is a single determined value and cannot meet risk assessment requirements. Comprising the following steps: a) acquiring a historical power spectral density sequence; b) inputting the historical power spectral density sequence into a hybrid degradation prediction model, and predicting axle box vibration power spectral density under any running mileage in the future; c) inputting the axle box vibration power spectral density predicted in the step b) into a nonlinear transfer function model based on artificial intelligence, and calculating the stress power spectral density of the key position of the bogie; d) dynamically determining an optimal calculation mileage step length by the decision-making type artificial intelligence model, and then calculating future prediction fatigue damage; and e) calculating generated actual fatigue damage according to historical monitoring data, and outputting probability distribution of the residual fatigue life of the bogie by integrating future predicted fatigue damage.

The invention relates to a city domain vehicle envelope line generation method and device, computer equipment and a storage medium, and the method comprises the steps that vehicle body data submitted by a first user, bogie data submitted by a second user and track data submitted by a third user are acquired, and the vehicle body data comprise allowable tolerances of vehicle parts in the manufacturing and mounting process; according to the vehicle body data, the bogie data and the track data, constructing a vehicle-track dynamics model; a dynamic load is loaded in the vehicle-track dynamics model to simulate vehicle operation, a corresponding displacement set of the vehicle at each moment is obtained, and the displacement set comprises the displacement corresponding to each observation point; and according to the displacement set corresponding to each moment and the tolerance, determining a dynamic envelope line changing along with time.

This utility model relates to the field of rail transit technology, and in particular to a spring plate for an obstacle detection device, comprising a horizontal plate, wherein one end of the horizontal plate is bent downward to form a bogie support connection part, and the other end is bent downward to form a crossbeam toothed plate connection part, and the bending areas at both ends of the horizontal plate are arc-shaped; the thickness of the crossbeam toothed plate connection part is less than the thickness of the horizontal plate, and the thickness of the arc-shaped bending area between the two gradually decreases along a first preset direction. While satisfying the original performance, this utility model adopts a gradually changing wall thickness structural design, which enhances the stability of the spring plate under high-frequency, high-amplitude random vibration environments, reduces stress concentration in the bolt hole area, and delays the generation and propagation of fatigue cracks, thereby solving the problem of early fracture of spring plates due to stress accumulation in the prior art.

The application discloses a bogie covering device and a railway vehicle, and relates to the technical field of railway vehicles.The bogie covering device comprises a bottom plate arranged below a bogie and between two wheels arranged adjacent to each other along the width direction of the vehicle; two side plates arranged on the two sides of the bottom plate along the width direction of the bogie, and the side plates are provided with avoiding holes for the wheels to extend out; and the side plates are connected to a vehicle body and are in contact with or connected to the bottom plate.In the process of using the bogie covering device provided by the specific embodiment, when the vehicle is running, the bottom plate and the two side plates cover all parts of the bogie except the wheels, so that the airflow can be prevented from entering the interior of the bogie to generate resistance, the resistance generated by the bogie part during the running of the vehicle is effectively reduced, and the energy consumption is reduced.

The application discloses a kind of car body and bogie hanging connection device. Including car frame middle beam and bogie, each axle of bogie is provided with a set of hanging connection device;Each set of hanging connection device includes: device upper part and middle beam flange or web limiting contact suspension combination hook assembly, device lower part can pass through axle, and with axle rotation limiting combination U-shaped suspension ring assembly, located in device middle part connecting hook assembly and U-shaped suspension ring assembly's crossbeam assembly.The car body and bogie hanging connection device of the application adopts arc-shaped hook, crossbeam, U-shaped bolt, connecting plate combination screw, nut and other fasteners combination into four-point hanging type connection device, avoids the obstacle above axle, realizes the horizontal hanging of car body to bogie, adapts the narrow space of the combination of bogie and car body, avoids to disassemble and test vehicle, device uses screw adjustment mode, it is convenient to adjust and compensate the height deviation between car body and bogie axle;Flexible, convenient to use.

The invention discloses a damping adjusting method, device and equipment of an anti-snake-shaped shock absorber and a storage medium, belongs to the field of train shock absorption, and aims to consider that other disturbed quantities except the anti-snake-shaped shock absorber can be regarded as a whole (sum uncertainty) in relative head shaking angle information of a bogie. Therefore, the method comprises the following steps: firstly, determining a dynamic differential relational expression of the relative head shaking angle information of the bogie about the damping coefficient of the anti-serpentine damper and the sum uncertainty, and then determining a sum uncertainty estimator (used for outputting a sum uncertainty estimated value) of the bogie; according to the method, the target damping coefficient of the anti-snakelike damper can be determined based on the dynamic differential relation on the basis of the total uncertainty estimated value and the measured value of the relative head shaking angle information, so that the damping coefficient is dynamically adjusted, the method can adapt to complex and changeable operation conditions, and the transverse stability and riding comfort of a train are improved.

A method for calculating equivalent stress of excluding wheel rail large impact interference, relates to the field of high-speed motor train unit bogie system, solves the problems that the existing equivalent stress calculation method cannot guide line maintenance, and the test data of the actual line includes the test signal of wheel rail large impact interference and cannot be eliminated, and the like, the method can predict the equivalent stress of the bogie frame after excluding the wheel rail large impact according to the actually measured wheel rail large impact signal, and can effectively guide the establishment of line maintenance standard. The method can calculate the equivalent stress amplitude of the bogie frame without large impact by excluding the wheel rail large impact interference, evaluate the line maintenance state, and predict the actual equivalent stress of the bogie frame under the condition without large impact. The reasonable line maintenance standard is established, so that the structure strength of the bogie frame meets the requirements in the use process, and damage does not occur.

The invention relates to a rail vehicle, for which a direction of travel is specified and which has a leading bogie at a front of the rail vehicle with respect to the direction of travel and a trailing bogie at the end of the rail vehicle which is directed counter to the direction of travel. The leading bogie and the trailing bogie are each equipped with an anti-roll stabilizer. The roll stiffnesses of the anti-roll stabilizers of the leading bogie and of the trailing bogie are selected to be different such that, when side wind acts on the rail vehicle, unequal wheel unloading at the leading and trailing bogies is counteracted.

To provide a bogie frame component for a railway vehicle that can reduce an amount of welding on a side beam.SOLUTION: A component of a bogie frame (10) for a railway vehicle includes a side beam (11). The side beam (11) includes two side plates (111b) and a top plate (111a). The side plates (111b) face each other. The top plate (111a) connects the side plates (111b) to each other at one end in a height direction of the side plates (111b). The side beam (11) is open on the opposite side in the height direction from the top plate (111a).SELECTED DRAWING: Figure 2

The invention provides a self-propelled flash welding rail heat treatment vehicle for urban rail transit, and belongs to the technical field of rail engineering machinery. Comprising a frame, a shed, a hook buffer device, hydraulic supporting legs, a bogie, a fuel tank, a wind source device, a tool box, an auxiliary generator set, a cab, an electrical room, a power room, a working room and a welding machine room. And a welding machine device and a movable shed capable of being electrically opened and closed are arranged in the welding machine chamber. The device has the advantages of integration of welding and heat treatment, high automation degree, environmental protection, energy conservation, flexible operation and the like, and is suitable for urban rail transit steel rail welding operation.

A bogie for a rail-based vehicle, such as a train or tram. The bogie comprises one or more rail wheel arrangements, each having two rail wheels. The rail wheels are driven by a motor arrangement, comprising one or more electrical motors. The operation of the motor arrangement is controlled by alternating signals provided by an inverter arrangement formed in the bogie. The inverter arrangements converts a direct current (power supply) to one or more alternating currents, or one or more alternating current power supplies, for controlling the torque applied by the electrical motor(s) of the motor arrangement.

The application discloses a bogie maintenance line for initial and later operations by a truss robot, characterized in that the maintenance area comprises a bogie intake line, a frame maintenance line, a bogie discharge line, a good wheelset intake station, an aerial longitudinal track and the truss robot; the bogie intake line comprises a disassembly station; the bogie discharge line comprises a wheel dropping station; the frame maintenance line comprises a final station; the truss robot comprises a gripper, a large trolley, a small trolley and a lifting device; the truss robot can separate the frame and the wheelset by grabbing the frame at the disassembly station, and place the frame with spare parts at an initial station; the truss robot can grab the wheelset at the good wheelset intake station and place it at the wheel dropping station, and then place the frame at the final station on the wheelset at the wheel dropping station; when the gripper is at the highest position, the highest position of the grabbed frame or wheelset is higher than the lowest position of the truss robot; and the main advantages are low labor intensity and high operation efficiency.

The invention belongs to the technical field of coatings, and discloses a corrosion-resistant high-impact-resistant electrophoretic coating and a preparation method thereof. The coating comprises a cationic water-based resin emulsion, flaky nano clay with epoxy groups grafted on the surface, a curing agent, a cosolvent and a functional additive, the core of the method is that through electric field driving in the electrophoretic deposition process, resin micelles and modified nano clay form a bionic micro-nano laminated structure in which hard inorganic sheet layers and flexible organic layers are alternately arranged on the surface of a cathode in situ, and interface bonding between the sheet layers is enhanced through chemical bonding. The bionic micro-nano laminated structure with clear periodicity and a chemical bonding interface is constructed through an in-situ co-deposition technology driven by an electric field, and the contradictions that hardness and toughness cannot be achieved at the same time and impact resistance and corrosion resistance are difficult to cooperate in the prior art are solved; the method is suitable for the high-end industrial fields such as automobile bodies, high-speed rail bogies, offshore wind power towers and the like with strict requirements on comprehensive protection performance.

The image in this application is an image for inspecting the vehicle equipment of a railway vehicle, and is used, for example, to check the operation of the vehicle equipment. A railway vehicle inspection system checks the operation of the vehicle equipment installed in intermediate cars (with two bogies) that do not have a cab, among the vehicle equipment controlled by the cab of the lead vehicle. The inspection system includes a temporary cab that simulates the function of the cab and is electrically connected to the vehicle equipment of the intermediate cars, and a controller that remotely controls the temporary cab via wireless communication. The image in this application is displayed on the controller and is of the touch panel type. The powering handle on the right of the image is used to gradually accelerate the vehicle, and the brake setting device on the left is used to gradually stop the vehicle. As an example, when operating the brake setting device on the touch panel, operating the controller at each bogie's location can confirm that the brakes on each bogie are operating normally.

The utility model relates to the technical field of rail transit, in particular to an automatic adjusting device for a bogie wheel set of a rail transit vehicle. According to the technical scheme, the device comprises a fixing frame and supporting plates movably installed at the two ends of the fixing frame, and an automatic adjusting assembly and an anti-collision assembly are arranged on the fixing frame; the automatic adjusting assembly comprises two supporting frames movably installed at the bottom of the supporting plate, a shaft sleeve is fixedly installed at the bottom of each supporting frame, a fixing wheel is rotationally installed on the outer side of each shaft sleeve, fixing plates are fixedly installed on the front side and the rear side of each fixing frame, and thrust springs are fixedly connected between each fixing plate and the two supporting plates. The movable frame, the supporting wheels, the movable rods, the connecting frame, the fixing piles and the anti-collision frame are matched with one another, so that the angle of the fixing wheels can be automatically adjusted along a curve of a rail, automatic adjustment of a vehicle bogie wheel set is facilitated, the anti-collision effect of the anti-collision frame can be improved, and the situation that the anti-collision frame is damaged when collided is avoided.

The invention discloses a safety wheel for a rubber wheel metro vehicle bogie and a preparation method of the safety wheel. The wheel comprises the following chemical components in percentage by mass: 0.52%-0.60% of C, 0.30%-0.40% of Si, 0.70%-0.80% of Mn, less than or equal to 0.015% of P, less than 0.010% of S, 0.20%-0.30% of Cr, 0.05%-0.23% of Ni, 0.04%-0.06% of V, (60-80) * 10 <-4%) of N, less than or equal to 0.012% of Al, less than or equal to 0.005% of Ti and the balance of Fe and inevitable impurities. The composition proportion of N and Al is controlled by adjusting C and adding V, so that the volume fraction of the tread ferrite reaches 5-12%, and the volume fraction of the rim reaches 10-16%; meanwhile, the metallurgical quality is controlled, the proportion of plastic inclusions is larger than or equal to 90%, the proportion of the size below 10 micrometers is larger than 85%, and the wrapping rate is larger than or equal to 80%. And finally, the average value of the fracture toughness of the wheel is larger than or equal to 85 MPam1 / 2, the unit value is larger than or equal to 80 MPam1 / 2, the rolling contact fatigue resistance is remarkably improved, and the cracking risk of large-size inclusions is reduced.