1559 results about "Bogie" patented technology

The invention relates to a digital twinning-based bogie numerical control machining error compensation method and system, and the method comprises the steps: constructing an initial digital twinning model comprising material characteristics and geometric constraints through fusing the historical machining data of a bogie and the structural characteristics of a workpiece; according to the real-time cutting force and temperature data dynamic correction model, time-varying stiffness parameters are updated, and a deformation prediction result is generated; identifying an error exceeding area based on the precision requirement of the bearing seat assembly surface; and the feed rate compensation amount is calculated according to the thin-wall area deformation gradient, and a pre-compensation parameter scheme used for adjusting the cutting path is generated. The method overcomes the industrial problems that a traditional compensation technology cannot dynamically suppress instantaneous deformation, multi-source error coupling is difficult to decouple, and parameter adjustment depends on trial cutting verification, and the machining precision and efficiency of the bogie are remarkably improved.

The invention relates to the technical field of belt conveyor dynamic characteristic research, in particular to a trailer type belt conveyor dynamic characteristic simulation method, which comprises the following steps: respectively carrying out stress analysis on a trailer frame, each wheel and a conveying belt unit in a trailer unit, and sorting the degree of freedom; establishing an overall coordinate system, a vehicle body coordinate system, a contact coordinate system and a conversion relation; respectively establishing kinetic equations of the wheel pair and the vehicle supporting frame; kinetic parameters of the trailer unit are determined; according to the Hamiltonian principle, a vehicle supporting frame vertical motion equation and a vehicle supporting frame nodding motion equation are established, and then a linear second-order differential equation of a vehicle supporting unit is obtained; and compiling a calculation program by using numerical calculation software, and simulating the wheel-rail vibration characteristics of the trailer unit in the straight-line-segment advancing process. On the basis of the multi-degree-of-freedom multi-body dynamics theory, a trailer type belt conveyor system nonlinear dynamics equation is constructed, and a wheel pair, a trailer frame and a six-degree-of-freedom motion equation for coupling the wheel pair and the trailer frame are analyzed.

The invention discloses a railway bogie bearing fault diagnosis method and equipment based on a feature extraction network, and relates to the field of intelligent diagnosis and maintenance guarantee of urban rail trains. The method comprises the following steps: data acquisition: acquiring vibration signals of a bogie axle box bearing under the same rotation speed and load combination; performing data preprocessing: performing frequency spectrum adaptive decomposition on each section of signal based on improved empirical wavelet transform, introducing a Fisher score and frequency spectrum entropy joint scoring mechanism, screening out key modal signals, and then performing image mapping to reconstruct a diagnosis sequence; model construction: introducing a topology perception attention mechanism module on the basis of the lightweight convolutional neural network, and constructing a fault diagnosis model; model training: training the fault diagnosis model to obtain an optimized fault diagnosis model; and diagnosis result output: using the optimized fault diagnosis model to diagnose the fault signal of the bogie axle box bearing, and outputting the diagnosis result. The method can improve the accuracy of fault diagnosis.

The invention relates to the technical field of train bogies, and discloses a deep learning-based railway bogie structure optimization method and system, and the method comprises the steps: collecting a three-dimensional geometric model of a bogie bolster, and constructing a finite element simulation model; and applying a combined load to the swing bolster structure based on finite element simulation to obtain a stress map of the swing bolster structure. And mechanical indexes are extracted to judge whether structure optimization is performed or not. And when optimization is judged to be carried out, a deep learning model is trained based on historical structure samples. And inputting the to-be-optimized swing bolster structure parameters into the deep learning model to obtain parameter adjustment suggestions for optimization. And reconstructing the bolster structure model according to the parameter adjustment suggestion, carrying out finite element verification, and judging whether the optimized structure meets the target performance index requirement or not. According to the method, the design efficiency is improved, the development period is shortened, and efficient collaborative optimization of the railway bogie swing bolster structure among multi-target performance such as strength, rigidity, modality and fatigue life is achieved.

The present disclosure relates to a computer-implemented method for determining a real time steering angle (58) for a railway bogie (1) and to a control device (40) which is configured to perform the method, the method comprising: deter-mining by a sensor assembly at least one lateral real time sensor signal (38), which is characteristic for a lateral position of a tread of at least one wheel of the railway bogie (1) with respect to a railway track, determining, by means of a positioning algorithm (47), a real time position and / or orientation of the railway bogie (1) with respect to the railway track (31), using the received at least one lateral real time sensor signal (38) and determining the real time steering angle (58) for steering of the railway bogie (1), using the determined real time position and / or orientation of the railway bogie (1).

The bogie weighing device comprises a weighing valve and a force transmission mechanism, an air inlet of the weighing valve is communicated with an auxiliary air cylinder, an air outlet of the weighing valve is communicated with a distribution valve in a vehicle braking system, the weighing valve is fixed to a framework of a vehicle bogie, and the force transmission mechanism is connected with the framework and can rotate around a connecting point. One end of the force transmission mechanism is connected with the weighing valve, and the other end of the force transmission mechanism is connected with the hanging bracket. Stepless regulation of vehicle braking can be achieved.

The invention relates to the technical field of urban rail train safety detection, and discloses a mechanical rail train detection method and system with a real-time detection function, and the method comprises the steps: collecting the states of obstacles on the two sides of a bogie and normally open and normally closed contacts of derailment detection travel switches; calculating a trigger state code; an emergency or non-emergency braking signal is output and an alarm is given; and when the state returns to normal and a reset instruction is received, the alarm is released and the initial state is recovered. In the prior art, obstacle or derailment detection is realized by depending on a multi-stage sensor and an electronic control unit, and especially in complex operation environments of high electromagnetic interference, high humidity dust and the like, stable and low-fault-rate real-time detection cannot be realized. Due to the fact that a redundancy judgment mechanism combining a pure mechanical structure and the vehicle programmable logic control unit LCU is adopted, high-reliability real-time detection of the obstacle and derailment state is achieved, and the safety and maintainability of a train system are improved.

The utility model relates to a disassembly and assembly clamp for disassembly and assembly of a bogie bolster spring wedge, which comprises an electromagnetic iron core, a coil winding, a pneumatic tool, a pen-shaped cylinder and a clamp supporting seat, the electromagnetic iron core is fixedly arranged on the clamp supporting seat, the pneumatic tool is fixedly arranged on the electromagnetic iron core, the pen-shaped air cylinder is fixedly arranged on the clamp supporting seat, and the pen-shaped air cylinder is connected with an air cylinder ejector pin in the pneumatic tool. The pneumatic ejector pin is controlled to reciprocate by adjusting the air pressure of the pen-shaped air cylinder, so that the pneumatic ejector pin penetrates through the electromagnetic iron core to abut against the inner pillow spring; a coil winding is arranged outside the electromagnetic iron core and can attract the outer pillow spring. The assembling and disassembling clamp adopts the combination form of the electromagnet and the pen-shaped air cylinder, the automatic assembling and disassembling operation of the pillow springs and the wedges of the k2 and K6 bogies is facilitated, the structure is simple, the installation and the maintenance are convenient, and the clamp form is also suitable for the automatic assembling and disassembling operation of the pillow springs and the wedges of the k4 and K5 bogies.

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 belongs to the technical field of vehicle control, and particularly relates to a steering angle module and a vehicle. The steering angle module comprises a bogie, a steering motor, a wheel side system and a multi-connecting-rod structure. The bogie is arranged in the Z direction; the steering motor is arranged at the top end of the bogie and can be connected with a vehicle body. The wheel side system is arranged on one side of the bogie in the Y direction. The multi-link structure is connected to the bogie and the wheel side system. The steering motor can drive the bogie to drive the wheel side system and the multi-connecting-rod structure to rotate around the axis of the steering motor together. In the process that the steering motor drives the bogie to rotate, the bogie can drive the multi-connecting-rod structure, then the wheel side system is driven to rotate together, and steering is achieved. Therefore, the reliability in the steering process is ensured through the multi-connecting-rod structure, and the steering angle module has good operation stability.

The invention relates to an active suppression control method for mechanical vibration of a railway vehicle, which comprises the following steps of: acquiring vibration signals of a vehicle body chassis, a bogie frame and a wheel set axle box in real time through a sensor array, and generating a vibration data set through filtering and noise reduction; performing multi-degree-of-freedom coupling feature analysis on the data set based on a vibration analysis model, and extracting vibration coupling features of vehicle body vertical bending, bogie snaking oscillation and wheel set torsional resonance modes; generating a vibration intensity trend matrix through time-frequency conjoint analysis, and indicating the vibration intensity change of each component in real time; when the vibration intensity exceeds the limit, parameters of a damper, a vibration absorber and an actuator are dynamically adjusted, and a vibration suppression instruction set is generated; and finally, the actuating mechanism is driven to cooperatively suppress the multi-mode coupling vibration. According to the method, the composite vibration problem of vehicle body shaking, bogie buffeting and wheel rail impact under the high-speed working condition is solved, and therefore the vibration suppression real-time performance and the cooperative control precision are improved.

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.

The invention belongs to the field of train structure health monitoring, and discloses a bogie tube plate structure welding seam detection method and device, and the method comprises the steps: obtaining a Lamb wave signal of a to-be-detected tube plate structure welding seam region, and carrying out the preprocessing, and obtaining a preprocessed Lamb wave signal; on the basis of the preprocessed Lamb wave signal, the position of the weld crack defect of the to-be-detected tube plate structure is predicted through the RAPID tomography technology, and a weld crack defect positioning detection result is obtained; inputting the preprocessed Lamb wave signal sequence into a bogie tube plate structure welding seam detection model to obtain a welding seam crack defect quantitative detection result; outputting a welding seam crack defect positioning detection result and a quantitative detection result as welding seam detection results; according to the invention, the positioning and quantitative detection result of the welding seam damage of the bogie tube plate structure can be quickly and accurately obtained, the high-precision detection requirement of the welding seam of the bogie tube plate structure is met, and the safe operation of a rail transit vehicle is ensured.

The invention relates to the technical field of concrete spreader, and discloses a concrete spreader for engineering construction, which comprises a support frame and a bogie, the inner wall of the bogie is rotatably connected with the top of the support frame, the inner wall of the bogie is fixedly connected with a second conveying pipe, and the side wall of the bogie is provided with a discharge pipe. The first material conveying pipe is connected with a pipeline of a concrete pump truck, then the pump truck is started, concrete is pumped into the first material conveying pipe, the concrete can flow into the second material conveying pipe and the steering pipe till the concrete flows into the flow guide groove, the concrete is divided into two strands through the flow dividing assembly, aggregate in the two strands of concrete collides with each other, and the aggregate in the two strands of concrete collides with each other. Therefore, the flowing speed of the aggregate is slowed down, the follow-up mortar wraps the aggregate, the aggregate and the mortar of the concrete are evenly distributed, the situation of local aggregate concentration is reduced, and the situation that due to the fact that the aggregate is high in descending speed and prone to being accumulated at the bottom, the mortar floats on the upper layer, and the uniformity of concrete distribution is affected is effectively prevented.

The invention discloses a wheel leg type suspension device for a vehicle, and belongs to the technical field of vehicle chassis suspension. The upper end of a vertical swing arm is hinged to a bogie, the lower end of the vertical swing arm is hinged to one end of a longitudinal swing arm, and the other end of the longitudinal swing arm is hinged to a connecting seat; the vertical swing arm can swing back and forth, and the longitudinal swing arm can swing up and down; the two ends of the connecting rod are hinged to the vertical swing arm and the connecting base respectively, so that the vertical swing arm, the connecting rod, the longitudinal swing arm and the connecting base jointly form a four-connecting-rod mechanism, and up-down movement and front-back movement of the wheels are decoupled. The two ends of the hydro-pneumatic spring are hinged to the bogie and the longitudinal swing arm correspondingly and used for driving the wheels to move up and down and reducing vibration. The two ends of the driving cylinder are hinged to the bogie and the vertical swing arm correspondingly and used for driving the wheels to move front and back. The requirements of high-speed running and high trafficability of vehicles can be met, the basic requirements of the vehicles on the suspension device are met, and the suspension device can be applied to suspension of steering axles and non-steering axles.

A railroad car truck including one or two new side frames that each includes one or more of a plurality of different improvements that individually and in various combinations reduce, inhibit, or minimize the likelihood of stress fractures or cracks in the side frame.

The utility model discloses a 16-wheel desert drilling machine integral moving and transporting system capable of steering independently, which comprises a plurality of groups of moving and transporting modules uniformly distributed along the periphery of a drilling machine base, each group of moving and transporting modules comprises a gooseneck frame with a heavy frame structure, the front end of each gooseneck frame is hinged with the end part of the drilling machine base through a pin shaft, and the tail end of each gooseneck frame is hinged with an axle system through a pin shaft; the axle system comprises a middle longitudinal beam which is located in the center of the sub-moving module and arranged in the longitudinal direction, the front end and the rear end of the middle longitudinal beam are each provided with a set of axle steering frames, and steering driving columns penetrating through the middle longitudinal beam are connected to the middles of the axle steering frames in a welded mode; the bottoms of the two ends of the axle bogie are connected with the parallel loading axle through hoops and end plates, and rims and tires are assembled at the two ends of the parallel loading axle. By controlling the steering hydraulic cylinder, the included angle of the tires can be adjusted, and then the turning radius of the moving and transporting system can be accurately controlled to adapt to different road condition requirements.

The present invention relates to the technical field of concrete curing, and discloses a concrete curing device, comprising a fixed frame, the bottom of the fixed frame is rotatably connected to a bogie, the inner wall of the bogie is fixedly equipped with a fixed cylinder, the inner wall of the fixed cylinder is rotatably sleeved with a positive and negative threaded rod, and the side of the positive and negative threaded rod passes through the inner wall of the bogie and is fixedly equipped with a steering wheel. Through the coordinated use of the coating roller and the stop frame, the mobile motor is used to drive the docking cylinder to rotate through the synchronous wheel 1, thereby using the docking cylinder to drive the coating roller to rotate, and then using the coating roller to assist the film to be released, and using the synchronous belt to assist the synchronous wheel 1 to drive the synchronous wheel 2 to rotate, and then using the synchronous wheel 2 to drive the stop frame to rotate in the inner wall of the limiting cylinder through the reducer, so that the stop frame pushes the counterweight block on the inner wall of the fixed frame to move, and is discharged to the top of the film through the inner wall of the bottom of the limiting cylinder, thereby assisting the film to be limited while the film can be stably unfolded.

The utility model provides a bogie frame which comprises two side beams and a cross beam connected between the two side beams. The side beam is designed into a straight structure, and the air spring mounting seat on the side beam adopts a forge piece, so that the size of the side beam in the vertical direction is greatly reduced on the premise of ensuring the strength, and a space for mounting flaw detection equipment is reserved. The cross beam is of a #-shaped structure formed by the two transverse beams and the two longitudinal beams, the traction device can be placed in the middle of the #-shaped structure, the vertical size of the traction device is compressed by optimizing the structure of the traction device, and therefore enough space is reserved below the bogie. According to the scheme, the vertical structures of the side beams and the cross beams of the bogie frame are optimized, so that the vertical size and the overall weight of the whole bogie frame are greatly reduced, and enough space is reserved for mounting equipment below the bogie frame. The utility model further provides an engineering inspection van with the bogie frame.

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.

A telescopic joint suitable for a novel magnetic levitation track comprises main crown rails, auxiliary crown rails and an equipartition connecting rod mechanism, the main crown rails are fixed below flange plates on the two sides of a T-shaped track beam joint, and the auxiliary crown rails are arranged between the main crown rails; a transverse slide way and two longitudinal slide ways are arranged in the middle of the top face of the auxiliary crown rail, and the two longitudinal slide ways are symmetrically distributed on the two sides of the transverse slide way. The equally-divided connecting rod mechanism is a four-connecting-rod mechanism and is arranged on the top of the auxiliary crown rail, hinge points of the four-connecting-rod mechanism are correspondingly connected with the sliding ways in a sliding mode, and the two ends of the four-connecting-rod mechanism are hinged to the top of the front main crown rail and the top of the rear main crown rail respectively. When the main crown rail stretches and retracts along with the T-shaped rail beam, the auxiliary crown rail is driven to move through the equipartition connecting rod mechanism, and gaps between the front end and the rear end of the auxiliary crown rail and the main crown rail are always kept equal. Interference with an electromagnetic module below the bogie of the maglev train can be avoided, and it can be guaranteed that front and rear telescopic gaps of the connector are equal.

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.

This application relates to the field of health monitoring in rail transit, and discloses a method, device, and system for monitoring the health of a bogie. The method includes: acquiring the stress on the surface of a predetermined location on the main body of a composite bogie when deformation occurs; the predetermined location includes key parts of the main body and areas where the main body and components are connected by fasteners; determining the degree of damage to the main body; and predicting the remaining life of the composite bogie based on the stress and the degree of damage. Therefore, the health monitoring method in this application, by acquiring the stress on the surface of a predetermined location on the main body of the composite bogie and determining the degree of damage to the bogie main body, and then predicting the remaining life of the composite bogie based on the degree of damage and the acquired stress, ensures the structural safety of the composite bogie and reduces maintenance costs.

The invention provides a bogie frame and a monitoring device. The frame comprises a frame body, a first strain assembly and a second strain assembly. The framework body is provided with at least one first stress area and at least one second stress area, the first stress area is provided with an exposed outer surface, and the second stress area is located in the hollow structure. The first strain assembly is located on the exposed outer surface of the first stress area and used for outputting a first signal and enabling the first signal to change along with the strain of the first stress area. The second strain assembly is located on the surface of the second stress area and used for outputting a second signal, and the second signal changes along with the strain of the second stress area. Therefore, the surface stress and the internal stress of the framework can be monitored in real time, so that the safety and the risk controllability of on-line operation of the framework can be ensured.

The invention discloses a truck bogie side frame / swing bolster CAD / CAE (computer-aided design / computer-aided engineering) integration method and a truck bogie side frame / swing bolster CAD / CAE integration system, and belongs to the technical field of rail transit equipment design. The truck bogie side frame / swing bolster CAD / CAE integration method comprises the following steps: preprocessing an original CAD model, and converting input parameter data into ANSYS software recognizable format; constructing a CAE (Computer Aided Engineering) template on the basis of ANSYS Workbench and intelligent mapping; and carrying out CAE simulation analysis by utilizing the recognizable parameter data and constructing a CAE template, and automatically generating a simulation analysis report. A CAE (computer aided engineering) simulation analysis template is established by utilizing CAD (computer aided design) geometric modeling, so that full-process automatic analysis under the working conditions of static load and static strength stipulated by TB / T 3549.2 is realized, and the design efficiency and reliability of the side frame / swing bolster of the truck bogie are remarkably improved.