447 results about "Track bed" patented technology

The invention provides a method for predicting the sand-bearing state of a ballast track bed based on deep learning. The method comprises the steps that a discrete element simulation model of a sandstorm track bed is established, and rigidity parameters of the sandstorm track bed in different positions and depth areas are obtained through analysis; based on the rigidity parameters, a vehicle-desertification ballast track coupling finite element simulation model is established, and the vibration acceleration of the sleeper in different sand-containing states is obtained through analysis; and inputting the vibration acceleration as training data into the constructed sand-bearing state prediction model to train the sand-bearing state prediction model to obtain a trained sand-bearing state prediction model, and performing sand-bearing state prediction by using the trained sand-bearing state prediction model to obtain a sand-bearing state prediction result. The sand-bearing state prediction model is a deep learning model based on a convolutional neural network and a long short-term memory network. According to the invention, the sand-bearing state of the ballast bed can be predicted with high precision. The method has important reference value for guiding line maintenance work and guaranteeing stable operation of the train.

The invention discloses a construction method for a ballastless track of a steel base plate bearing rail table type. The construction method comprises the following steps: collecting midline mileage data of a double-block sleeper on site, synchronously widening a transition area track bed, determining the geometric dimension of a steel base plate, carrying out in-plant finish machining, synchronously arranging the steel base plate bearing rail table, calculating coordinates and carrying out on-site lofting. Drilling a track bed in the transition area and arranging a track bearing table; shifting and connecting steel rails in a transition area; track fine adjustment and operation maintenance; the steel rail is shifted back to a main line; dismantling the temporary line; repairing the existing ballast bed and the waterproof layer; the invention relates to the technical field of railways. The method solves the problem that a ballastless track structure is difficult and complex to access a new line.

The invention discloses a ballast track resistance measuring system and method, and relates to the technical field of track resistance detection, an image acquisition module is used for acquiring a grey-scale map and a depth map of a track bed, an image preprocessing module is used for preprocessing the grey-scale map, and a sleeper detection module is used for detecting the resistance of a ballast track by extracting sleeper characteristics in the grey-scale map. The real-time position and form of the sleeper in the ballast bed are obtained; the railway ballast height is measured through a railway ballast measuring module, the processing logic of the railway ballast measuring module is that a steel rail area, a sleeper area and a railway ballast area are determined firstly, and the actual value of the railway ballast height on the two sides of a ballast bed and the actual value of the railway ballast height in the center of the ballast bed are calculated through the steel rail area, the sleeper area, the railway ballast area and a depth map, namely, the railway ballast height; and the resistance measurement module is used for comparing the real-time position and form of the sleeper with the standard position and form to obtain the displacement and the pollution value of the sleeper, and finally integrating the information to complete the measurement of the ballast bed resistance. According to the invention, the ballast bed resistance can be measured simply and efficiently.

The invention discloses a train-ballast track-roadbed system simulation method based on MBD-DEM-FDM coupling, and the method comprises the steps: building a train model based on a multi-body dynamics MBD method: building a dynamic model of a train system, simplifying a suspension system of a train through a spring and a damper, and considering the interaction between the train and a track; establishing a three-dimensional ballast track bed model based on a discrete element method DEM; establishing a roadbed finite difference model based on a finite difference method FDM, including: regarding the roadbed as a continuous medium, and simulating mechanical behaviors and deformation characteristics of the roadbed under the action of a train load based on the finite difference method FDM; setting a coupling medium so as to couple the MBD-DEM-FDM, and carrying out real-time information exchange between the MBD and the DEM and FDM systems; and establishing a coupling model based on MBD-DEM-FDM coupling, and verifying and applying the coupling model. The invention further discloses a corresponding system, electronic equipment and a computer readable storage medium, and the comprehensive influence of the micromechanical characteristics of particles in the ballast bed and the train power effect on the track and the roadbed is considered.

The utility model discloses a railway ballast track bed resistance rapid measuring vehicle which comprises a vehicle frame arranged above a track, a front wheel set and a rear wheel set are installed on the vehicle frame in the length direction of the track at intervals, and the front wheel set and the rear wheel set are both rolled on two steel rails. Two fastener disassembling and assembling mechanisms are installed on the frame in the length direction of the rail at intervals, two rail lifting mechanisms are installed on the frame in the transverse direction of the rail at intervals, the two rail lifting mechanisms extend to the rail webs of the two steel rails respectively, and two hydraulic supporting mechanisms are installed on the frame and located between the two fastener disassembling and assembling mechanisms. A resistance measuring mechanism is installed on the frame and located between the two hydraulic supporting mechanisms. According to the utility model, the operation convenience can be effectively improved, the detection efficiency is greatly improved, and safety accidents are avoided. The device is suitable for the technical field of railway ballast track bed resistance detection.

The present application relates to a kind of plate type ballastless track bed expansion joint glue injection and leveling integrated system, including control system, glue pipeline system, mobile platform, glue injection execution system, wherein glue pipeline system is applied to the pressure of glue body storage tank, force glue liquid to be transported along pipeline to the end of glue injection execution system, glue injection execution system is by six-axis mechanical arm control unit according to expansion joint space coordinate planning six-axis mechanical arm path information and forms six-axis mechanical arm action instruction, realizes six-axis mechanical arm end injection head to expansion joint and carries out glue injection operation.The present application is by setting glue injection execution system and glue pipeline system on mobile platform, can guarantee according to the length direction of expansion joint and carry out glue injection and according to stable glue injection quantity realize the glue injection of expansion joint, reduce labor intensity, improve the glue injection quality of expansion joint.

The invention provides an automatic ballast raking device for a railway ballast track. The device comprises an automatic walking module, a line state sensing module, a railway ballast cleaning module, a ballast raking module and an operation control system, wherein the railway ballast cleaning module is used for cleaning railway ballast covering the end part of a sleeper, the middle part of the sleeper and the surface of a fastener through a sweeper; sleeper end images are shot in real time through a visual sensor, a line state sensing module collects three-dimensional point cloud data of a ballast bed and the surrounding environment through a laser radar, and an operation control system recognizes the positions of sleepers according to the received sleeper end images and extracts the distance between the sleepers and the position of a sleeper box area. And according to the received ballast bed point cloud data, identifying and modeling a ballast bed profile before operation, calculating ballast raking amounts and ballast raking directions at different positions, and generating an operation mode and operation parameters. According to the device, automatic obstacle avoidance in the walking process is achieved, and self-adaptive adjustment and accurate control of operation parameters are achieved according to the track bed profile. Manual intervention is not needed in the whole operation process.

The invention provides high chloride ion permeation resistance steel fiber fine aggregate concrete and a preparation method thereof. The high chloride ion permeation resistance steel fiber fine aggregate concrete comprises the following raw materials in parts by weight: 200-300 parts of cement; 30 to 50 parts of metakaolin; 100 to 200 parts of fly ash; 50 to 100 parts of mineral powder; 1-8 parts of nano silicon dioxide; 800 to 1000 parts of sand; 800 to 1000 parts of stone; 10 to 60 parts of steel fiber; 150 to 200 parts of water; and 5-20 parts of a water reducing agent. The steel fiber fine aggregate concrete with high chloride ion permeation resistance has the advantages of improved mechanical properties and durability, extremely high chloride ion permeation resistance, excellent volume stability, low material cost, economic feasibility of large-scale application, and wide application prospect. And the strict service requirements of the urban rail transit ballast bed under the long-term dynamic load, stray current and erosion medium coupling effect are precisely met.

The invention discloses a construction method for replacing an elastic base plate of a ballastless track of a high-speed railway, which belongs to the technical field of tracks and comprises the following specific steps of: 1, preparing construction, 2, marking and acquiring original data, 3, mounting a lifting appliance, and connecting a portal crane with the lifting appliance through a steel wire rope, 4, lifting a track plate and separating the track plate from a base plate. 6, replacing an elastic cushion layer; 7, carrying out auxiliary fine adjustment falling and mounting; 8, carrying out track bed slab reset measurement; and 9, starting the next work construction until the construction of the whole rectification and replacement section is completed. The problems that in the prior art, the replacement construction efficiency of the ballastless track elastic base plate is low, the precision is difficult to guarantee, and the construction difficulty is large under the complex working condition are solved, operation is easy and convenient, and practicability is high.

The invention relates to a segment reinforcing device for a shield tunnel and a construction method thereof, a steel ring is matched with a to-be-reinforced shield tunnel segment, one side of the steel ring is open, two steel corbels are located on the two opposite sides of the open end of the steel ring respectively, the outer circumferential wall of the steel ring is attached to the inner circumferential wall of the to-be-reinforced shield tunnel segment, and the outer circumferential wall of the steel ring is attached to the inner circumferential wall of the to-be-reinforced shield tunnel segment. The steel ring is fixedly connected with a to-be-reinforced shield tunnel segment through a chemical anchor bolt, and the outer walls of the two steel corbels are used for being connected with the two opposite side walls of a ballast bed in the to-be-reinforced shield tunnel segment in an attached mode correspondingly; the construction process comprises the steps of obtaining the curvature radius of the arc-shaped steel plate, manufacturing the steel ring, changing the row of the pipeline, installing the segment reinforcing device and recovering the pipeline. Compared with a traditional shield tunnel segment reinforcing mode, the strength of the shield tunnel segment is improved, meanwhile, the posture of the shield tunnel segment can be kept consistent with the posture of an existing shield tunnel segment, the normal use function of a shield tunnel is not affected, the space of the shield tunnel is not occupied, and the risk of deformation of the shield tunnel segment is reduced.

The invention provides a radar electromagnetic energy-ballast bed smudginess calibration method and device, and relates to the technical field of rail transit data processing, and the method comprises the steps: setting railway ballast gradation corresponding to different smudginess grades; respectively manufacturing a plurality of railway ballast test boxes for each railway ballast gradation according to the railway ballast gradation corresponding to different smudginess grades; the railway ballast test boxes are placed according to a preset railway ballast test box arrangement mode, and ballast bed calibration line construction is completed; a track bed radar detection vehicle is arranged on the calibration line section, radar electromagnetic data of the railway ballast test box sections corresponding to different smudge grades are obtained, and radar energy indexes of the railway ballast test boxes of the multiple smudge grade sections are determined; and according to the radar energy indexes of the ballast test boxes of the multiple dirt grade sections and the corresponding ballast bed dirt indexes, a mathematical correlation model between radar electromagnetic energy and the ballast bed dirt indexes is established through regression fitting, and the radar energy indexes on the detection vehicle are converted into actual ballast bed dirt physical indexes through the correlation model.

The invention discloses a digital laying construction method for subway prefabricated rubber spring floating slabs, and relates to the technical field of rail transit. Comprising the following steps: S1, construction preparation; s2, binding and pouring steel bars of a base; s3, measuring the flatness of the substrate; s4, digitally measuring and positioning a floating slab line; s5, roughly paving the floating slabs; s6, primarily measuring the jacking amount of the floating slab vibration isolator; s7, the floating slab is finely adjusted; S8, an adjusting base plate is installed, and limiting boss steel bars are bound and poured; and S9, steel rail fastener installation and rail fine adjustment. The digital laying technology is adopted for controlling all links of laying, the problems existing in floating slab track bed construction are effectively solved, accurate positioning of the floating slabs is achieved, the track precision is improved, the situation that due to floating slab laying precision deviation, a large amount of rework is caused, and the smoothness index cannot meet the requirement in the operation period is avoided, and the construction efficiency is improved. The construction period and cost are saved for construction, the maintenance cost within the guarantee period is reduced, and the operation and maintenance cost is reduced.

A novel steel wheel crawler-type highway-railway dual-purpose chassis mainly comprises a telescopic crawler-type chassis, a steel wheel device and a rotary platform. Connecting frames on the two sides of the telescopic crawler-type chassis can adjust the distance between the left crawler belt and the right crawler belt through telescopic oil cylinders, and the requirement that the whole machine walks in a ballastless track bed surface layer pit and the surface of a ballastless track plate and a ballast track bed is met. Steel wheel devices with power are arranged in front of and behind the working platform and are suitable for walking under the rail working condition after steel rails are laid; and by controlling the lifting oil cylinder of the steel wheel device, the steel wheel can fall off the rail and be suspended, so that the highway-railway dual-purpose running state is switched. A cab, a hydraulic system, an electrical system and different rail construction working devices can be carried on the working platform of the steel wheel crawler-type highway-railway dual-purpose chassis, and the steel wheel crawler-type highway-railway dual-purpose chassis has important significance on safe, efficient and convenient rail line construction and line operation overhaul and maintenance.

The invention discloses an orbit foreign matter detection method and system, and relates to the technical field of orbit detection.The method comprises the steps that an unknown foreign matter model is built through Gaussian distribution and a convex hull algorithm, and a known foreign matter model is built in combination with prior data; extracting a flat area of the ballast bed, projecting the foreign body model into a depth map and generating a shadow, and superposing to obtain a synthetic image with a mark; training a segmentation network by using the synthetic image and a real image, and obtaining a potential foreign matter mask through thermodynamic diagram binaryzation, connected domain analysis and size screening during reasoning; and inherent facility false alarms are eliminated through a secondary classification network, a real foreign matter detection result is finally output, alarm is triggered according to a detected threshold value, and efficient and accurate detection is realized. According to the method, on the premise that real foreign matter samples are scarce and ballast bed scenes are complex, efficient, accurate and real-time ballastless track foreign matter detection is achieved, meanwhile, the false alarm rate is reduced, and the generalization ability of the model to unknown foreign matter is improved.

The utility model relates to the technical field of railway construction, in particular to a ballastless track bed formwork support which comprises channel steel, an adjusting lead screw and a track bed formwork, two tying columns are fixedly connected to the two sides of the channel steel, a connecting ring is fixedly connected to one end of the adjusting lead screw, a bent rod is inserted into the other end of the adjusting lead screw, the connecting ring is inserted into the tying columns, and the bent rod is inserted into the track bed formwork. According to the ballastless track bed formwork support, railway construction operation is simplified, the construction efficiency is improved, an original structure is protected to a certain degree, meanwhile, unnecessary waste of manpower and material resources in the construction process is effectively reduced, the construction cost is reduced, and the construction efficiency is improved. And the method has obvious economic benefits.

The utility model provides a novel rail vehicle overload and unbalanced load detection device with multiple detection areas, and relates to the technical field of vehicle overload and unbalanced load detection. Comprising a plurality of measuring areas arranged along a steel rail and a terminal, and sleepers are arranged at the bottom of the steel rail at intervals in the extending direction of the steel rail; connecting main beams are pre-buried in ballast beds on two sides of a steel rail in each secondary measurement area respectively, and the connecting main beams on two sides are fixedly connected with two ends of a first number of sleepers respectively; a first shearing force sensor and a second shearing force sensor are arranged at the position, corresponding to the upper portion of each connecting main beam, of the steel rail at intervals so as to detect shearing force data; the terminal is electrically connected with the first shearing force sensor and the second shearing force sensor so as to receive shearing force data, and whether the vehicle is overloaded or not is judged according to the shearing force data. The stability of the structure in the corresponding measuring area is improved, installation is convenient, and compared with the prior art, cost is lower.

The utility model belongs to the technical field of track plate laying and pouring, and discloses a ballastless track plate laying and pouring construction crane which comprises a pouring stock bin, a movable door frame, a traction mechanism and a hoisting and clamping mechanism. The traction mechanism comprises a traction main frame, a traction hydraulic cylinder, a steel cable limiting winding column and a steel cable, one end of the steel cable is wound at the telescopic end of the traction hydraulic cylinder, and the other end of the steel cable bypasses the corresponding steel cable limiting winding column and then is vertically downwards connected with corresponding lifting lugs at four corners of the lifting clamping mechanism; the lifting clamping mechanism comprises a lifting main frame, a clamping hydraulic cylinder located in the middle and extending longitudinally and horizontally, clamping connecting longitudinal rods arranged in a bilateral symmetry mode, and clamping seats which are in bilateral mirror symmetry and connected with the clamping connecting longitudinal rods on the corresponding sides, and the clamping connecting longitudinal rods are hinged to the two ends of the clamping hydraulic cylinder through V-shaped oil cylinder connecting frames; the utility model has the advantages of automatic control clamping and loosening, simple and fast operation, stable clamping, stable hoisting and the like.

The invention relates to the technical field of rail transit, in particular to a tuning vibration and noise reduction device suitable for rail transit, which comprises a rail bed, a groove table is fixedly connected to the top of the rail bed, a bearing plate is welded in the groove table, and a steel rail is mounted at the top of the bearing plate. According to the invention, through cooperative work of the vibration reduction mechanism and the noise reduction mechanism, vibration energy is buffered, dissipated and recycled by utilizing sliding of a piston rod in a sleeve, flowing of damping liquid and a piezoelectric effect, and the vibration reduction mechanism has the advantages that the vibration reduction mechanism and the noise reduction mechanism are arranged in the sleeve, so that the vibration energy is reduced, and the service life of the vibration reduction mechanism is prolonged. The device can dynamically adjust the damping liquid amount according to the weight of a train, the vibration reduction and noise reduction effect is enhanced, meanwhile, the piezoelectric sheets convert vibration energy into electric energy and feed the electric energy back to the electromagnets, steel rail vibration is restrained, noise is reduced, cooperative enhancement of noise reduction and vibration reduction is achieved, the service life of a rail is effectively prolonged, and noise pollution is reduced.

The utility model relates to the technical field of track traffic, in particular to a track structure with reserved turnout inserting and laying conditions, bolt holes are reserved in a track bed structure at the laying position of a long-term turnout, anchor bolt holes matched with the bolt holes in position are reserved in a sleeper base plate, and the bolt holes are matched with the anchor bolt holes in position. And an iron seat for mounting a steel rail of a recent line is arranged on the sleeper base plate. The device has the advantages that the work amount and the implementation risk of turnout inserting and laying can be greatly reduced, and the maintenance work amount and the safety risk point cannot be increased even if only common lines are laid in the recent period; the structure is simple, reasonable, convenient to construct and suitable for popularization.

According to the operation equipment and method for replacing the ballastless track bed sleepers, the operation equipment for replacing the ballastless track bed sleepers comprises a vehicle frame and a foundation pit digging system, a walking device is arranged at the bottom of the vehicle frame and can drive the vehicle frame to walk on steel rails, the foundation pit digging system is used for breaking and dismantling old sleepers, and the foundation pit digging system is used for digging the old sleepers; the device comprises an abrasive drilling tool, a coring tool and a milling tool which are sequentially arranged from front to back, and the abrasive drilling tool is used for drilling and grinding a sleeper ballast bed surface; the coring tool is used for breaking and taking out a concrete core column; the milling tool is used for removing the pillow block; through the operation equipment for replacing the ballastless track bed sleeper, the construction efficiency is greatly improved, and the personnel investment is reduced; the construction quality is improved, the foundation pit digging quality is improved, the consistency of the digging depth is good, the galling quality of the contact surface is good, and the crushing influence area is small.

The invention relates to a multi-layer grading regulation and control construction method for a ballastless track of a long-span cable-stayed bridge of a high-speed railway. The method comprises the following steps: S1, initial preparation; s2, collecting basic data; s3, performing initial linear evaluation and adjustment; s4, laying a ballastless track base plate; s5, ballastless track roadbed slab laying, a multi-layer grading regulation and control method is adopted, and before a ballastless track bed is implemented, the precision of a bridge model is verified through a grading simulation dead load test, and the steel beam rigidity and the temperature change rule are analyzed; a water bag is used for loading graded regulation and control counterweights, a finished bridge line shape is simulated, the corresponding counterweights are synchronously unloaded for equivalent replacement when roadbed slab concrete is to be poured, it is ensured that the internal force state of a bridge and the ballastless track line shape are consistent with the ideal finished bridge state after a main bridge is built, and the error of the large-span ballastless track finished bridge line shape is controlled within the standard allowable range; the fastener adjusting amount is greatly reduced, the track laying precision is improved, the engineering quality is guaranteed, and good economic and social benefits are generated.

The utility model provides an anti-seismic rail for a high-speed railway, which comprises a concrete roadbed slab and a steel rail, longitudinal sleepers are arranged on the roadbed slab, wide sleepers are arranged on the longitudinal sleepers at intervals, the steel rail is arranged on the wide sleepers, and transverse and longitudinal adjusting devices are arranged below the steel rail at intervals and used for adjusting transverse and longitudinal deformation of the steel rail and enhancing the anti-seismic property of the steel rail. The transverse and longitudinal adjusting devices are additionally arranged below the steel rails, the transverse and longitudinal adjusting amount is increased, transverse deformation and longitudinal deformation are reduced, settlement of the rails can be effectively reduced, and meanwhile the anti-seismic property is enhanced through matched existing wide sleepers and prefabricated roadbed slab structures; the roadbed slab is formed through one-time pouring, a base construction procedure is omitted, the weep hole serves as a reserved transverse cutting hole, the roadbed slab is directly cut so as to rectify deviation, rapid repair after an earthquake can be achieved, the structure is simple, construction is rapid, the overall rigidity is large, and the system integrity is good; and the stability of the track under vibration and earthquake loads is improved.

The utility model belongs to the field of tracks, and discloses a drainage type ballastless track bed structure which comprises a ballastless track bed main body, drainage mechanisms are arranged on the two sides of the ballastless track bed main body, and each drainage mechanism comprises a drainage channel, a water conveying pipe, a drainage pump and a pressurization drainage pipe, so that an efficient drainage system is formed, and the drainage capacity of a ballastless track bed can be remarkably improved. The drainage grooves formed in the bottoms of the rails are communicated with the drainage channels, and rapid drainage of accumulated water can be promoted; when the hourly rainfall is too large, the drainage pump is started, accumulated water is rapidly drained through the drainage groove, the drainage channel, the water conveying pipe and the pressurization drainage pipe in sequence, the problem that the accumulated water in the ballastless track bed structure cannot be rapidly drained is effectively solved, and therefore safe operation of a train on the ballastless track bed structure is guaranteed. And the occurrence risk of safety accidents such as train derailment is reduced.

The present application provides a kind of railway dirty way bed slurry and mud disease evaluation method, it is related to geotechnical engineering technical field, the present application obtains the continuous dynamic profile of railway bed in the process of vehicle passing, and the static profile before the vehicle passing, based on Sobel operator processing profile, to determine slurry and mud area and normal area, determine the void pore pixel point and mud jam pore pixel point of slurry and mud area;And judge the slurry and mud disease stage of way bed, according to the edge profile of slurry and mud area to judge the static instability degree of way bed;Compare adjacent time dynamic profile to determine the dynamic expansion of slurry and mud area and the situation of pore being dyed mud, combine static instability degree, dynamic expansion and pore being dyed mud situation, and the slurry and mud disease of way bed is evaluated as mild, moderate and severe.

The utility model relates to the technical field of track bed contact rails, in particular to a cast-in-place monolithic track bed contact rail embedded nylon sleeve support which comprises a support body, a first mounting plate is fixedly welded to the front side of the left side of the support body, and a second mounting plate is fixedly welded to the middle end of the right side of the support body. A line track is installed on the top of the support body, a clamping block is fixedly installed on the front side of the top of the support body and located on the front side of the line track, and a clamping plate is fixedly installed on the rear side of the top of the support body and located on the rear side of the line track. The problems that in the concrete pouring process, the sleeve possibly shifts, inclines and the like, a contact rail support is difficult to install in the later period, and manual supporting is needed are solved, a line track can be stably installed, the shaking condition is avoided, the installation stability of the embedded sleeve is improved, manual fixing is not needed, physical strength is saved, and the production efficiency is improved. And the working efficiency is improved.

The present application provides a self-stretching intelligent tamper, belonging to the technical field of railway ballast track tamper vehicle, comprising: a top connecting frame for connecting different direction tamper devices and tamper vehicles; a regulating mechanism is connected to the lower end of the connecting frame, for adjusting the oil pressure provided by the oil pressure mechanism according to the different degrees of dirt and mechanical state of the track bed, so that the self-stretching intelligent tamper head expands to the best working size; an oil pressure mechanism is connected to the lower end of the regulating mechanism, for transmitting oil pressure and providing oil pressure for the self-stretching intelligent tamper head; the lower end of the oil pressure mechanism is connected to a tamper body, and the lower end of the tamper body is connected to a tamper head. The present application effectively avoids the disturbance and damage of the tamper head to the indirect contact force chain between the sleepers and the ballast when the tamper is pulled out; reduces the resistance of the tamper insertion, eliminates the need for manual loosening operation before the tamper operation, and improves the efficiency of the tamper operation; the size of the tamper head can be automatically adjusted according to the different mechanical properties of the track bed, realizing differentiated tampering.

The application discloses a fastener plate lower anti-stray current system, which realizes the increase of the creepage distance of the fastener system, the reduction of the surface contaminant accumulation and the prevention of the internal conductive path from being penetrated by dust, oil and water and other contaminants, thereby making the fastener system have good insulation performance during long-term use. In the application, a plate lower insulation plate with good insulation performance is arranged under the iron pad plate to realize the electrical isolation between the upper iron part of the fastener and the track bed, and the insulation coating with good insulation performance and elasticity is sprayed on the surface of the fastener to realize the filling and sealing of the gaps of the components on the upper part of the fastener, thereby preventing the decrease of the overall insulation performance of the fastener caused by long-term use. The scheme is basically consistent with the installation of the general fastener, does not increase additional processes, and will not be obviously affected by any subsequent rail adjustment, and is suitable for large-scale construction.

The invention discloses an assembly type trapezoidal sleeper mold for ballast bed pouring and a construction method using the same, the mold comprises a top mold, a bottom mold, a side mold and an end mold, the top mold, the bottom mold, the side mold and the end mold can be detachably combined, and after combination, a mold longitudinal beam of which the boundary dimension is basically consistent with that of a trapezoidal sleeper longitudinal beam can be obtained. Then the two mold longitudinal beams are fixedly connected into a trapezoidal sleeper mold with the boundary dimension basically consistent with that of the trapezoidal sleeper through the connecting steel pipes, then the mold track panel is assembled and placed above the ballast bed pouring position, namely, the preset placing position of the trapezoidal sleeper, and after ballast bed pouring is completed, the mold track panel can be taken down, and then the trapezoidal sleeper mold is formed. By means of the mold and the method, the phenomena of empty hoisting and hard-to-hard collision can be effectively avoided, use of isolation materials is omitted, the pasting and wrapping processes are reduced, and the cost is saved.

The utility model relates to an embedded sealing strip for a spring floating slab. The embedded sealing strip mainly comprises a sealing piece, a buckling device and an expansion bolt. The gap between the side edge of the ballast bed and the tunnel wall is blocked by plugging the sealing piece to prevent impurities from entering, and the buckling and pressing device is installed to fix the sealing piece. According to the floating slab side sealing strip, site construction is facilitated, a large amount of working hours for punching holes and screwing bolts when a traditional sealing strip is installed are reduced through a plug-in installation mode and a single-side buckling and pressing fixing mode, and the sealing strip is located in a floating slab side ditch, so that tearing caused by external force (such as treading by people and pressing by heavy objects) on the traditional floating slab side sealing strip is avoided.

The invention discloses a track board laying device and a track board laying method based on the BIM technology, and relates to the technical field of track traffic construction.The track board laying device is provided with a track transporting vehicle, a guide rail, a walking truss, a position adjusting mechanism and a track board clamping and laying mechanism; the track plate clamping and laying mechanism firstly slowly lowers the height to enable the lower surface of the track plate and the roadbed or ballast bed surface to be close to a preset gap; and then the adsorption force of the adsorption assembly is released, and the clamping assembly is gradually opened, so that the track plate is stably released and laid in place under the action of gravity. Through the process, the device can complete automatic transfer, accurate positioning and release laying of the track plate, and frequent manual adjustment operation during traditional manual matched hoisting is avoided.