54 results about "Railway engineering" patented technology

The application discloses a railway catenary foreign matter detection method based on frequency-space cooperation purification, and relates to the field of railway engineering technology.The method comprises the following steps: at the front end of the main network, input shallow feature maps are respectively processed by a spatial domain adaptive compensation branch and a frequency domain dynamic filtering branch, and a purified feature map is obtained through fusion; the bottleneck layer of a feature extraction module in the main network is reconstructed, and linear topological features are extracted by using a multi-scale parallel strip convolution path; a spatial attention map is generated by a shape perception substream for the feature map output by the neck network, pixel-level weighting is performed on the regression substream features, and a bounding box prediction result is output, and the network is trained by using a total loss function comprising a classification loss, a bounding box overlap loss and a shape penalty loss.The application can inhibit regular background noise, improve the continuity of foreign matter feature expression, and help improve the positioning accuracy of small foreign matters.

This invention relates to the field of road and railway engineering technology, and discloses an active air-heat synergistic regulation structure and method for preventing frost heave in cold-region roadbeds. Sensors embedded in the roadbed acquire real-time temperature and humidity data, and a controller automatically switches operating modes based on data feedback and preset logic. In active drying mode, hot, dry air is injected into the pipeline network to reduce the roadbed moisture content below the critical frost heave threshold, eliminating the root cause of frost heave. In adaptive barrier mode, a low-energy "thermal barrier" is formed using slightly warm air, and in the event of sudden water intrusion, a "freezing barrier," or ice curtain, is creatively formed using a low-temperature refrigerant for emergency water isolation. In assisted thaw drainage mode, low-pressure air is used to accelerate the discharge of thawed water. This invention transforms frost heave prevention from reactive remediation and passive defense into proactive, intelligent, full-cycle management, achieving a unified approach to both symptomatic and fundamental treatment. It has advantages such as strong adaptability, high reliability, and integrated functional synergy.

The utility model discloses a railway engineering construction is with noise reduction device, including first support seat and second support seat, the bottom of first support seat and second support seat all is fixedly connected with base, first support seat and second support seat's front and back both sides all are fixedly connected with triangle steady block. The utility model discloses through setting up first sound baffle, second sound baffle, sliding slot, slide column, sliding sleeve etc. Structure makes the relative position between first sound baffle and second sound baffle can adjust, thereby realizes the length's adjustment of noise reduction device, can adapt to different construction scene and noise reduction demand, has improved the practicality of device greatly.

This invention discloses an intelligent detection device and method for turnout spatial structure parameters. Utilizing laser scanning and multi-sensor fusion technology, and integrating an electromechanical structure, it achieves effective detection of turnout spatial structure parameters, meeting the rapid and comprehensive detection needs of common single turnouts. It solves the drawbacks of low efficiency and numerous missed detections in manual inspection, significantly improving detection efficiency and providing automated and intelligent detection equipment and technical means for railway engineering sites.

The utility model discloses a railway engineering car big arm integral machining frock relates to railway engineering car big arm frock technical field, including base platform, rear seat positioning seat, rear seat tight seat, stand compression part, middle tight seat, front fork tight seat, front fork positioning seat, the utility model discloses the use has realized the accurate positioning and firm clamping of big arm integral, and each positioning and tight component cooperation effect ensures that big arm keeps stable in the processing, avoids the processing error caused by the clamping not firm, and one clamping can complete the integral processing of big arm, shortens the processing time, improves production efficiency, and integral processing reduces the error produced in the process of component dispersed processing and assembly, improves the overall performance and reliability of big arm, prolongs the life, the utility model effectively solves the problem existing in traditional processing mode, has remarkable practicality and innovativeness, and has important significance to improve the processing quality and production efficiency of railway engineering car big arm.

The present application relates to a kind of rail bolt protection device of railway engineering accessory technical field, including protective steel tank, rail fastener, connecting bolt and adjusting bolt;The protective steel tank is set in the outside of rail, and covers the bolt installation area outside the rail;The bottom surface of the protective steel tank is welded with first connecting piece, the surface of the first connecting piece is provided with through hole, and the side of each protective steel tank is welded with two pieces of first connecting piece;The rail fastener passes through the first connecting piece by through hole, and is connected with the first connecting piece by connecting bolt;The adjusting bolt is set on the upper surface of protective steel tank, and is in abutment with the lower jaw of rail;The present application reduces the mechanical impact and water slag corrosion suffered by the bolt outside the rail, avoids the damage of bolt leading to railway maintenance and blast furnace shutdown, guarantees the continuity of metallurgical production;Meanwhile, the labor, material cost of bolt replacement can be greatly reduced, and the line maintenance replacement and vehicle wheelset repair cost are saved.

1. Name of the product in this design: Drive structure for auxiliary driving device of railway engineering vehicle. 2. Application of this design: This design is used for the drive structure of the auxiliary driving device for railway engineering vehicles. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application relates to the technical field of railway engineering machinery, and provides a turnout replacement device and a turnout replacement method. The turnout replacement device comprises a flat car and a gantry crane, the gantry crane comprises a telescopic arm and a telescopic column fixed at one end in the transverse direction, the telescopic column can be telescopically extended in the vertical direction; a fixed column is fixed at the lower end of the flat car, and the upper end of the fixed column is hinged at the other end of the telescopic arm, so that the telescopic arm and the telescopic column can rotate as a whole around the fixed column; and the fixed column is fixed on the flat car. The application solves the technical problem of complicated use and storage processes of the gantry crane of the traditional turnout replacement device.

The application discloses a track gauge adaptive engineering machinery chassis system, engineering machinery and a chassis system control method, and belongs to the technical field of railway engineering machinery. The chassis system comprises a frame, a rail walking module, a distance detection module and a controller. The rail walking module comprises two side guide wheels, and the two side guide wheels realize wheel-to-wheel distance adjustment through a bidirectional synchronous telescopic mechanism. The distance detection module comprises a first laser range finder and a second laser range finder, which respectively collect wheel-to-rail distance and wheel-to-wheel distance. The controller is configured to perform two-stage adjustment, i.e., on-track state confirmation according to the wheel-to-rail distance and off-track state confirmation according to the wheel-to-wheel distance. The two side guide wheels are rigidly and synchronously moved through the bidirectional synchronous telescopic mechanism, and the two laser ranging closed-loop control is matched, so that continuous adaptive adjustment of various track gauges is realized, presetting of a fixed mode or manual input of a target value is not needed, and the working continuity and the intelligent level of a multi-track-gauge railway scene are remarkably improved.

The utility model discloses a railway crossing curve track gauge adjusting device relates to railway engineering technical field, it includes the screw rod of transverse between concrete integral ballast bed and steel rail, one end of screw rod is equipped with the pad iron, and the other end inserts and is equipped in the iron block, and the screw rod is equipped with flat washer, spring washer and nut assembly between the iron block and the pad iron. Compared with prior art, the utility model provides a railway crossing curve track gauge adjusting device that can maintain track gauge stability for a long time and reduce maintenance cost.

The application discloses a kind of for the evaluation method of the applicability of high-speed turnout area elastic pad replacement method, it is related to high-speed railway engineering field, including determining a plurality of first-level evaluation indexes and secondary evaluation indexes;Determine weight based on analytic hierarchy process;Prepare a plurality of elastic pad replacement schemes to be evaluated, obtain the first-level evaluation indexes corresponding to each elastic pad replacement scheme, secondary evaluation indexes;Determine the extension correlation degree of each elastic pad replacement scheme based on matter-element extension model;Based on the position relationship index of replacement area and sensitive area, the deterioration degree index of elastic pad, correct the extension correlation degree, establish comprehensive correlation degree evaluation model;Get the comprehensive correlation degree of each elastic pad replacement scheme.The application is used to solve the problem that there is lack of evaluation standard for high-speed turnout area elastic pad replacement method in prior art, to realize the purpose of providing scientific selection standard for high-speed turnout area elastic pad replacement method, providing quantifiable decision basis for field maintenance.

A track-passing pipe installation positioning and protection device, belonging to the field of tunnel engineering construction technology, includes an inverted trapezoidal shell with windows in the middle of the upper and lower surfaces. Several sets of movable track-passing pipe protection components are arranged along the length of the bottom center of the shell. Each set of track-passing pipe protection components includes two track-passing pipe positioning plates symmetrically arranged about the horizontal centerline of the shell. One end of the two positioning plates contacts each other, and the contact ends of the two positioning plates have symmetrically formed semi-circular openings to create track-passing pipe positioning ports. This invention can reliably and safely position and protect track-passing pipes, protect the exposed parts of the track-passing pipes, and precisely control the minimum spacing between track-passing pipes, thereby improving the installation quality of track-passing pipes, increasing construction efficiency, and ensuring the level of railway engineering construction.

The present application relates to the field of railway engineering, and relates to a kind of extraction method of rock slope based on hyperspectral remote sensing image, the method includes obtaining hyperspectral remote sensing image;Linear stretching treatment is carried out based on hyperspectral remote sensing image, obtain first spectral image;Based on first spectral image, carry out hue analysis processing, obtain first classification chart, first classification chart includes the area meeting the hue feature of rock slope;Band analysis is used to process hyperspectral remote sensing image, obtain second spectral image;Based on first spectral image and second spectral image, processing is carried out, obtain second classification chart, second classification chart includes the area meeting the lithology brightness of rock slope;Hyperspectral remote sensing image is processed, obtain third classification chart;First classification chart, second classification chart and third classification chart are processed, obtain the range of rock slope, the present application solves the problem that traditional rock slope extraction method relies on artificial visual interpretation, low efficiency, realizes the accuracy of extracting rock slope range.

The present application discloses a kind of soft rock zone high spectral remote sensing identification method for railway engineering geological survey, comprising: obtaining railway survey area hyperspectral image and constructing data set;Subsample set is constructed by random sampling, and the space division of multiple groups of isolated hyperspheres and residual space is generated based on the distance of pixel and its nearest neighbor;According to the position of pixel falling into each space division, generate isolated kernel feature vector;With all or part of pixel as background pixel set, calculate the average value of its isolated kernel feature vector as isolated distribution kernel mean model;The inner product of the isolated kernel feature vector of the pixel to be measured and the mean model is calculated to obtain the initial abnormal similarity, and the contiguous area is extracted as soft rock zone after spatial neighborhood regularization.The present application reduces the computational complexity from quadratic to linear, has data density adaptive ability, and can efficiently and accurately identify soft rock zone under complex geological background along railway by fusing spatial continuity constraint.

1. Name of the product in this design: Calibration limiter for auxiliary driving device of railway engineering vehicle. 2. Application of this design: This design is used for calibration and limiting structures in auxiliary driving devices for railway engineering vehicles. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

This utility model discloses a reinforcement structure for strengthening railway subgrade, including a subgrade body and railway tracks laid on top of the subgrade body. A reinforcement layer is provided at the bottom of the subgrade body, and slope protection structures are provided on both sides of the subgrade body. A buffer layer is provided at the top of the subgrade body and below the railway tracks. A first impermeable layer is provided between the reinforcement layer and the subgrade body; a second impermeable layer is provided between the slope protection structures and the slopes of the subgrade body. This utility model relates to the field of railway engineering technology, and particularly to a reinforcement structure for strengthening railway subgrade. This utility model enhances the subgrade's load-bearing capacity and resistance to settlement through a reinforcement layer, prevents water intrusion through double impermeable layers, damps vibration through a buffer layer, and integrates structural and ecological protection through a grid beam + vegetation slope protection. The synergistic effect of multiple structures effectively solves problems such as subgrade settlement, slope instability, water seepage, and insufficient vibration damping, improving stability, durability, and ecological friendliness.

1. The name of the design product: rail engineering vehicle auxiliary running device transfer device. 2. The use of the design product: the design product is used for rail engineering vehicle auxiliary running device transfer device. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

This utility model discloses a protective device for embedded sleeves in ballastless track bridge decks, relating to the field of high-speed railway engineering. It aims to solve the problem that existing embedded sleeves do not provide effective protection, making it difficult to ensure that the embedded sleeves are not damaged during milling of the beam surface. The key technical points are: it includes anchoring steel bars and a sleeve body connected to the anchoring steel bars. The sleeve body has internal threads, and the anchoring steel bars have external threads adapted to the internal threads. Bolts, made of plastic, are threadedly connected to the sleeve body. This utility model's protective device for embedded sleeves in ballastless track bridge decks, after the sleeve body is installed, prevents cement slurry from entering the sleeve body during concrete pouring and prevents damage to the sleeve body during milling of the beam surface. This ensures that the sleeve body can be smoothly installed with anchoring steel bars and connected to the base plate later.

The present application belongs to the technical field of railway underpass engineering construction, and particularly relates to a construction method for setting up D temporary beam foundation by using existing bridge piers in railway underpass engineering; the existing bridge pier and abutment structure and the bearing capacity of the foundation are detected and evaluated, the cast-in-place concrete temporary beam support pier is connected with the existing bridge pier and abutment structure by means of anchoring to form an integral stress system, so that the D temporary beam setting up foundation is formed by using the existing bridge pier and abutment structure; the construction method for setting up D temporary beam foundation by using existing bridge piers in railway underpass engineering utilizes the existing bridge pier and abutment structure, reduces the foundation treatment engineering, saves the material and labor cost, reduces the disturbance to the existing roadbed and equipment, and the integral stress system formed by connecting the cast-in-place concrete temporary beam support pier with the existing bridge pier and abutment structure ensures the safety of construction and railway operation.

The application discloses a rail-holding walking device and method, and belongs to the technical field of railway engineering equipment. The method comprises the following steps: S10: a control module drives and adjusts a rail-holding jaw and a walking wheel set based on track profile information obtained by a track type sensor in real time, so as to match the current track specification; S20: the control module drives the rail-holding jaw to clamp the track, and obtains rail-holding state information reflecting the fitting state of the rail-holding jaw and the side surface of the track, so as to ensure that a preset rigid anchoring is established between the device and the track; S30: the control module drives the walking wheel set to move along the track based on the execution work information and the track type monitoring information obtained by the track type sensor in real time, and dynamically adjusts the rail-holding jaw and the walking wheel set; and S40: after the work is completed, the control module controls the rail-holding jaw to be separated from the rail-holding state based on preset reset driving information, and stops the movement of the walking wheel set. The walking precision degradation problem of the traditional separated structure under dynamic working conditions is solved.

This invention belongs to the field of engineering geological mapping technology. To address the current problems of low efficiency, large errors, and insufficient automation in processing engineering information, it provides a deep learning-based method for digitizing railway engineering drawings and extracting quantities. This method optimizes input by establishing a railway professional icon library and employing various data augmentation techniques such as adaptive histogram equalization. It utilizes an improved YOLOv8 model (incorporating SCConv, EMA, and RFA mechanisms) to achieve high-precision detection of graphic targets, and combines this with a PaddleOCR model to extract text information. Finally, the recognition results are digitized and automatically integrated with the engineering bill of quantities for quantity calculation, outputting standardized results conforming to an enterprise-level structured coding system. This method significantly improves the accuracy and efficiency of drawing recognition, automates and standardizes quantity calculation, and provides reliable technical support for the digital management of railway engineering projects.

The utility model relates to a railway engineering survey fixed point marking device, the existing fixed point marking device is difficult to adapt to different specifications ground, leads to insufficient stability, thereby cannot satisfy the engineering demand, the utility model discloses a marking rod, the marking rod top is provided with level, the marking rod bottom is provided with apron, the apron bottom is provided with support seat, the support seat bottom is provided with air bag, and the support seat outer wall is provided with vacuum pump, the vacuum pump is through the support seat with air bag intercommunication, the air bag inside fills with ball block, under the action of gravity, the ball block fills in the air bag inner bottom, and makes the air bag with the ground height difference and produces the deformation, starts the vacuum pump and draws the air, makes the air bag extrusion ball block, thereby makes ball block together with the deformed air bag clamps the object on the ground, thereby realizes the stable placement of device, and through air bag and ball block can adapt to different specifications ground, satisfies the engineering demand.

A photothermal adsorption refrigeration device and its application method for railway subgrades in permafrost regions are disclosed, comprising an above-ground photothermal drive and control unit and an underground phase change heat transfer unit. The device utilizes a metal halide-ammonia chemisorption cycle, using solar photothermal drive to generate a pressure potential difference through desorption / adsorption to replace a mechanical compressor, achieving a system with no moving parts and zero carbon emissions. The method includes geological survey and cooling capacity assessment, selection of device parameters and working fluid, subgrade cross-section layout based on deformation control, construction and commissioning, day / night / seasonal multi-field coupled adaptive operation, and closed-loop feedback. This invention overcomes the limitations of traditional heat pipes that remain dormant in warm seasons. It forcibly extracts heat from the permafrost during the warm season and enhances refrigeration using extremely low temperatures during the cold season, forming a synergistic dual-effect refrigeration of "active in summer and enhanced in winter." This can raise the upper limit of permafrost and control subgrade settlement to the millimeter level, making it suitable for plateau railway engineering, significantly improving the long-term stability of the subgrade and reducing operation and maintenance costs.

The application discloses a kind of full-face weld polishing machine, it is related to railway engineering machinery technical field, it includes pedestal, and still includes guide mechanism, rail top processing unit, rail waist processing unit and rail bottom processing unit;Pedestal includes fixed frame, and the both ends of fixed frame are respectively provided with clamp for clamping steel rail;Guide mechanism includes guide frame seat, oil cylinder and connecting plate;The front surface of guide frame seat is slidably provided with connecting seat along axial direction;The cylinder body of oil cylinder is fixedly arranged at one end of guide frame seat, and the piston rod of oil cylinder is connected with connecting seat;The back surface of connecting plate is fixedly connected with connecting seat, and the front surface of connecting plate can be alternatively connected in rail top processing unit, rail waist processing unit and rail bottom processing unit.The present application can overcome the technical defects that the existing machine rail waist and rail bottom position polishing is difficult, cannot achieve full-face polishing and operation efficiency is low, labor intensity is big, and operation safety risk is higher.

The application discloses a kind of force partition weighted railway bed dirt visual detection method and system, belong to railway engineering intelligent detection technical field.The application constructs the dynamic mapping model of interframe displacement and field of view overlap rate by real-time acquisition train motion parameter, and effectively frame is adaptively filtered;Adopt coarse cutting-fine identification hierarchical parallel vision architecture to identify dirty area;Based on the stress characteristics of bed, high stress area and low stress area are divided, and a mechanical weighting model is introduced to calculate the comprehensive risk index;The risk index is associated with the geographic location to generate a risk space distribution map, triggering hierarchical early warning and maintenance decision.The application solves the problems of data redundancy, heavy computing burden, and the disconnection between evaluation indicators and stress state in the prior art, achieving efficient and accurate detection of bed dirt and risk quantification, providing a scientific basis for railway maintenance decisions, and being suitable for heavy haul railways, coal lines and other scenarios.

This invention relates to the field of railway engineering schedule management and intelligent decision-making technology, and in particular to a method and system for ranking railway engineering schedule indicators. The method includes constructing a multi-dimensional schedule indicator system, establishing a hesitant fuzzy decision matrix, introducing a β threshold to construct a covering approximate space, calculating attribute dependencies to reduce redundant indicators, reconstructing the matrix, and calculating a comprehensive evaluation value, ultimately achieving a scientific ranking of schedule indicators. This application can effectively handle uncertainties, incompleteness, and attribute redundancy while preserving the multiple hesitancy and fuzziness of evaluation information, thereby improving the efficiency and accuracy of schedule indicator screening and ranking.