216results about "Railway fastening" patented technology

According to the present invention, the A/R, the ratio of cross sectional area A of scroll passage to scroll radius R can be increased without increasing the size of the turbine casing and with very simple construction and exhaust turbine capacity can be increased, so a variable-throat exhaust turbocharger with which engine output can be increased is provided. The turbocharger is equipped with a nozzle throat area varying mechanism of which the nozzle assembly unit is composed such that a plurality of nozzle vanes are supported rotatably by an annular nozzle mount and an annular nozzle plate is connected to the nozzle mount by means of a plurality of nozzle supports to sandwich the nozzle vanes, the nozzle plate is located in the scroll chamber by attaching the nozzle assembly unit to the turbine casing to allow the nozzle plate to form part of the inside sidewall face of the scroll chamber and a wall face of the annular flow passage.

Precipitated silicas with a high pH and their use in applications as defoamers having optimum silanol group density and a process for preparing precipitated silicas and to their use, particularly in defoamer formulations.

The invention discloses a D-shaped portable beam adjustable positioning fastener support. The central axis of a positioning bolt deviates from the central axis of a mounting hole, and an annular eccentric clearance is formed between the positioning bolt and a locking press block. The D-shaped portable beam adjustable positioning fastener support is characterized in that a cylindrical eccentric washer is arranged between the positioning bolt and the mounting hole and inserted into the annular eccentric clearance, the whole inner wall of the eccentric washer is close to the outer wall of the positioning bolt, and the whole outer wall of the eccentric washer is close to the inner wall of the locking press block. The D-shaped portable beam adjustable positioning fastener support has the advantages that the clearance between the positioning bolt and the inner wall of the locking press block mounting hole is eliminated by inserting the eccentric washer, the movement amount of the locking press block is eliminated as the positioning bolt is fixed, a mounted portable beam fastening plate cannot move, reliability of a rail is ensured, and safety of a railway is improved.

The invention discloses a self-protection track buckle which is symmetrically arranged on two sides of a steel rail and comprises spiral rail nails, wherein gauge apron plates, elastic strips and elastic strip fastening devices are sequentially mounted on the spiral rail nails; two side protection plates and side protection connecting plates are arranged on the gauge apron plates; a dustproof cover plate is mounted between the two side protection plates; the dustproof cover plate, the two side protection plates, the gauge apron plates and the steel rail form a protection space together. On premise that buckle pressure is ensured, the two side protection plates are tightly adhered to a rail waist, so that the situation that a buckle is loosened or inclined because of mechanical collision force is effectively avoided; the dustproof cover plate and the side protection plates form a protection cover of a protection station bolt, so that when cargoes are loaded and unloaded, multiple route equipment damages caused by direct collision of machines such as excavators and forklifts to exposed station bolts are effectively avoided, in addition, problems such as rusting of buckles buried by bulk cargos are solved, and the maintenance workload and the maintenance cost of routes are greatly reduced. In addition, the self-protection track buckle is low in manufacturing cost and relatively convenient to maintain, and thus the self-protection track buckle has very high social values.

Provided is a reinforced rail vibration-damping fastener. A lower iron backing plate and a lower backing plate are anchored on a sleeper through a thread at the lower end of a stud, a floating iron backing plate is disposed on the upper portion of the lower iron backing plate, a vibration isolation rubber pad plate is mounted between the floating iron backing plate and the lower iron backing plate, the floating iron backing plate and the lower iron backing plate are in the vertical direction of a steel rail, and two elastic guide assemblies are disposed parallel to the two sides of the steel rail respectively. Two wedge-shaped blocking shoulders extend at the bottom of the floating iron backing plate, and the wedge-shaped blocking shoulders are inserted in and matched with elastic slidingsleeves in corresponding rectangular groove holes of the lower iron backing plate, to perform limiting in the vertical and horizontal direction of the steel rail and slide up and down. Through an insulating bushing, a compression spring and a locknut, four through holes in the floating iron backing plate sleeve the upper end of the stud. The steel rail buckles the floating iron backing plate in alimiting mode through an under-rail rubber backing plate, an insulating rail cushion block, a T-shaped bolt, a nut and an elastic strip. On the whole, the reinforced rail vibration-damping fastener achieves high vibration damping capacity, and the use reliability is greatly improved.

The invention provides a swaging and limiting device for a track board of a ballastless track of a railway. The device comprises a swaging body of which both ends are respectively swaged on an upper base plate and an lower base plate, and a pull rod which is used for fixing the swaging body, wherein a penetrating hole is formed in the swaging body, a curve groove is formed in the upper end of the penetrating hole, and an opening of which the inner diameter is extended is formed in the lower end of the through hole; the device further comprises a rotating component which is used for matching with the curve groove in a rotary manner, and the pull rod penetrates through an upper hole site of the rotating component and the penetrating hole of the swaging body to be connected with the track board or a base board; and the swaging body is locked by the upper end of the pull rod through a bolt. The swaging and limiting device disclosed by the invention is mounted outside a structure without damaging the track structure, the stress is clear, synergistic reaction between the track board and the base board is ensured, and the mounting, the checking and the exchange of all components are convenient; and after upwarp defect of the ballastless track structure is repaired, the limiting device can also be dismantled to enable the ballastless track structure to restore an original state, and the security and the ride comfort of high-speed railways and the lateral stability of lines are ensured.

The invention relates to a quick assembling and disassembling technology and a matching device for glued insulation joint. The technology realizes quick degumming , quick removal of fixing screws and bolts and fishtail clamping plates, and quick cleaning of surface cement. An auxiliary heating device can quickly locate and heat the corresponding parts such as the fixing screws and bolts, and the insulation fishtail clamping plate to reach degumming temperature for easy and quick removing. The auxiliary device uses the principle of heat expansion and shrinkage to use propane to heat a section of a steel rail, so that large expansion joint can be restored; and the auxiliary device uses liquid carbon dioxide reagent to spray the steel rail, so that small expansion joint can be restored.

The invention discloses a tight connecting structure. The tight connecting structure comprises a main body, a secondary body and a tight connecting module; the tight connecting module includes a screw rod, a locking nut and a stop sleeve; a taking structure for taking out the stop sleeve is arranged on the hole wall of a first stop hole and/or the stop sleeve; the screw rod penetrates through the main body and the secondary body to be in threaded connection with the locking nut; the stop sleeve is mounted out of the locking nut and in the first stop hole, and is axially limited in the first stop hole; a first stop part at the outer periphery of the locking nut is matched with a second stop part on the wall of a stop through hole of the stop sleeve to restrain rotation of the locking nut corresponding to the stop sleeve; a third stop part at the outer periphery of the stop sleeve and a fourth stop part on the wall of a first stop hole are matched to restrain rotation of the stop sleeve corresponding to the secondary body; and the screw rod, the locking nut and the secondary body and the main body are mounted in a manner of not rotating, the tight connecting structure has the following advantages: the locking nut cannot reversely rotate to loosen corresponding to the screw rod; and the stop sleeve can be taken out from the first stop hole conveniently, quickly and reliably.

Systems, methods, and machine-readable media to facilitate installation and adjustment of railway components are disclosed. Aligning of a railway anchor manipulator and a railway fastener installer with respect to a railway tie may be caused. The railway anchor manipulator may be slidably coupled with a frame assembly of a railway workhead, and may include anchor tools. The railway fastener installer may be slidably coupled with the main shaft structure, may include a hammer assembly, and may be operable to install railway fasteners through holes of a railway tie plate. The railway fastener installer may be caused to install the railway fasteners. The railway anchor manipulator may be lowered to a deployed position, and railway anchors may be adjusted with the anchor tools.

The invention provides a track turnout. The track turnout comprises: a suspension bracket; a first fixed track beam which is connected with the suspension bracket; an active track beam which is connected with the suspension bracket; and a driven track beam of which the two ends are respectively connected with the first fixed track beam and the driving track beam, wherein the driving track beam swings relative to the suspension support, and the swinging driving track beam drives the driven track beam to move. By limiting the structures, the track turnout is optimized by utilizing the double-rotating-center principle, and in the process of rotating and switching a branch road, the rotating center of the driven track beam is located on the first fixed track beam, and the rotating center of the driving track beam is located on the suspension bracket, so that the action principle of the whole turnout is simpler, on one hand, the overall structure of the track turnout is simplified, and the production cost and the processing and assembling difficulty are reduced; and on the other hand, the complexity of the control system is reduced, the working complexity is reduced, and the working reliability is improved.

The invention relates to a rail attachment system (1) for attaching a rail (2) to a concrete support slab (3a) or a concrete sleeper (3b) or to a steel structure comprising an intermediate plate (4), a rail attachment plate (5) with angle guide plates (6, 6b) arranged thereon, at least two first tensioning clamps (7a) for clamping the rail foot (2a) to the rail attachment plate (5) as well as screws (9) and/or ankle bolts (10) and at least two second tensioning clamps for screwing the rail attachment system (1) to the underlying surface, characterized in that an elastic intermediate layer (8) is arranged between the rail (2) and the rail attachment plate (5), and the intermediate plate (4) is composed of a highly elastic material and/or comprises a steel plate (4), at least two second tensioning clamps (7b) for clamping the rail attachment plate (5) to the substructure, preferably via the intermediate plate (4), wherein the first and second tensioning clamps (7a, 7b) are embodied in a highly elastic fashion with a high tensioning force, are provided, and at least one upper sliding plate (12) is arranged between the rail foot (2a) and a first tensioning clamp (7a), and at least one lower sliding plate (13) is arranged between the rail foot (2a) and the elastic intermediate layer (8) and is attached by means of a steel support (14) in the case of a steel substructure.

A method of constructing a rail track on a track-receiving concrete slab provided with channels serving to receive the rails of the rail track, wherein, after the concrete forming the track-receiving slab has set, it comprises at least the following steps: a) the stretches of rail are put in place above the channels in the track-receiving slab, each rail having a foot coated with a casing of resilient material; and b) the foot as coated with its casing is inserted into the channel by force.

The invention discloses an adjustable support of a magnetic levitation track. The adjustable support comprises a support plate and two jacking parts, the support plate is used for being connected between a track beam and a spandrel girder, wherein the two jacking parts are arranged below the support plate, the two jacking parts are arranged on the two opposite sides of the support plate respectively, and each jacking part is used for enabling the corresponding side of the support plate to ascend or descend so as to enable the two sides of the track beam in the width direction to ascend or descend respectively. According to the device, a two-stage adjusting mechanism is adopted to effectively adjust the installation precision and the use precision of the single-section track beam; the processing and mounting precision of the bearing beam and the lower structure is reduced; the installation difficulty and cost are reduced, the adjustment requirements of the track beam in various application scenes are effectively met, standardization and unification of track beam design are facilitated, the running speed and riding comfort of a magnetic levitation line are guaranteed in the running process, the reliability of a magnetic levitation track is improved, and the magnetic levitation track has great significance in high-speed magnetic levitation running in China.

A rail vibration damping fastener is disclosed in this paper, which comprises a cushion plate, an elastomer, a support plate, a positioning block and a fastening mechanism. The pad plate is provided with a positioning column, the positioning block is provided with a first through hole, and the positioning block is sleeved on the outside of the positioning column through the first through hole. Thefastening mechanism comprises a fastener and a locking cover plate, wherein the fastener is connected with a positioning post, and the fastener presses the positioning block through the locking coverplate; One side of the support plate is connected with the elastomer, the elastomer is fixed at the rail waist of the rail, and the other side of the support plate is abutted on the positioning block; The contact surface between the support plate and the positioning block is an inclined surface, and the top end of the inclined surface is inclined to the side close to the rail; The application canbe applied to the technical field of rail transit, and the application can effectively solve the problems existing in the prior art, and can realize the convenient installation operation of the positioning block, so as to provide the elastomer with sufficient pressing force; Furthermore, the composition of the existing rail vibration damping fastener can be optimized, and the convenient installation and maintenance operation can be realized.

The invention provides a rail fastening system. The rail fastening system comprises an under-rail backing plate padded under a rail, an insulated elastic backing plate padded under the under-rail backing plate, an insulated gauge block pressed on the rail, an elastic strip for tightly pressing the insulated gauge block, a sleeve pipe pre-buried in a sleeper, and a rail spike which passes through the insulated elastic backing plate and is fastened in the sleeve pipe. The rail fastening system is characterized in that the upper section of a screw rod of the rail spike is sleeved with an insulated sleeve, the lower end of the insulated sleeve extends into the sleeve pipe and is hermetically matched with the sleeve pipe, and the upper end of the insulated sleeve is clamped between the rail spike and the insulated elastic backing plate. The rail fastening system provided by the invention has the advantages that an existing rail fastening is structurally improved according to the reduction reason of the insulation property of the fastening system, the insulation property of the rail fastening system in a severe environment is enhanced, formation of stray current is reduced, corrosion tomunicipal pipelines is reduced, and the rail fastening system has higher use safety and reliability. The invention also provides an insulation method of the rail fastening system.

The present invention discloses a mechanical sensor-based intelligent elastic rod type fastener set, comprising elastic rod fasteners provided on the both sides of a rail, connected to spikes and pressed on the rail. The spikes are connected with a base provided below the rail. The mechanical sensor-based intelligent elastic rod type fastener set is characterized by comprising pressure sensors provided under the rail and capable of sensing pressure of the rail, and electromagnetic force generators electrically connected to the pressure sensors via a pressure sensor connection circuit; the electromagnetic force generators are connected with the spikes; the electromagnetic force generators and the pressure sensors are provided in the base; and the electromagnetic force generators are connected with a power grid through a main electric wire. The mechanical sensor-based intelligent elastic rod type fastener set has the beneficial effect that movable tracks can be fixed when the movable tracks are used for track supplementation, and has the advantages of being capable of making a fast response, performing control in real time and reducing the maintenance difficulty and cost, favorable to prolonging the service life of the elastic rod fasteners and the like.

The invention belongs to the field of the rail transport, and in particular to track bed slabs and a floating track bed formed by track bed slabs. The floating slab and floating track bed thereof comprise a floating slab body, an installing reserved space or a jointing sleeve matched with an elastic isolation mounting is arranged on the floating slab body, the connecting end of the floating slab body is provided with a first assembly hole and a second assembly hole, and the first assembly hole and the second assembly hole are arranged in the vertical plane of the floating slab body; the first assembly hole is inclined and penetrates through the floating slab body, an opening in the upper portion is arranged on the top face of the floating slab body, and an opening of the lower portion is arranged in the connecting coordinated face of the floating slab body; the second assembly hole is inclined and penetrates through the floating slab body, an opening of the upper portion is arranged in the connecting coordinated face of the floating slab body, the lower portion of the second assembly hole is provided with an assembly connector, and the assembly connector is located on the bottom of the floating slab body. The floating slab has the advantages that the structure is simple, the manufacture is easy, and the use is convenient. By means of the floating track bed formed by connecting the floating slabs, the efficiency of construction is high, the post-maintenance is convenient, the vibration performance is more excellent, the stress is more reasonable, and the service life is longer.

The invention discloses a modern tram trough type steel rail fastener which comprises a steel rail, a base plate, a bolster below the rail, two gauge blocks, two screw spikes, two elastic strips, two lock washers, an embedded sleeve, a heightening bolster below the rail, a heightening bolster below the plate and a sleeper. The embedded sleeve is arranged below the sleeper, the base plate is located on the sleeper, the heightening bolster below the plate is located on the base plate, the heightening bolster below the rail is located on the heightening bolster below the plate, the steel rail is located on the heightening bolster below the rail, the gauge blocks are arranged on the two sides of the steel rail, the elastic strips are located between the gauge blocks and the base plate, and the screw spikes fix the elastic strips through the lock washers. Compared with the prior art, the fastener system is matched with the trough type steel rail, enough fastening force is provided, it is ensured that the trough type rail and the concrete short sleeper with a retaining shoulder is reliably and stably linked, the number of parts is small, university is good, the structure is simple, and installation is convenient.

Typically, a tie plate assembly for supporting a rail on a tie includes a tie plate and a spike that is driven through the plate into the tie to secure the tie plate to the point. A sleeve is provided on the plate that is inserted into a tie to prevent the deflection of the spike with respect to the ties wheels of a train pass over the tie.

The invention relates to the field of rail traffic damping, and particularly discloses a shock absorption and settlement prevention subway rail suitable for a tunnel. The subway rail comprises a base and a rail top plate, two rails are fixed on the top of the rail top plate, and two elastic supporting plates are arranged between the base and the top plate; a plurality of groups of symmetrically arranged shock absorption devices are arranged on the base, each shock absorption device comprises a supporting shaft fixed on the base, a sleeve is arranged at the end part of each supporting shaft in a sleeving manner, each sleeve is rotatably connected to the corresponding supporting shaft, a plurality of spiral grooves with the same rotating direction are uniformly distributed in the inner wall of each sleeve, and uniformly distributed arc-shaped protrusions are fixed on the outer side of each sleeve; a transmission shaft extending into the sleeve is fixed to the lower surface of the rail top plate, and a transmission rod is fixed to the periphery of the transmission shaft; and a hydraulic shock absorption box is fixed to the base, a piston is connected into the hydraulic shock absorption box in a sliding mode, and a connecting rod stretching out of the hydraulic shock absorption box and abutting against the arc-shaped protrusions is fixed to the piston. The invention aims to solve the problem of tunnel settlement caused by long-term circulation of the vibration load of the existing subway train.

The invention discloses a line type positioning device of an F-shaped track panel, comprising a support frame, a positioning component arranged at one side above the support frame as well as a rotational positioning component arranged at the other side above the support frame. According to the invention, by arranging the positioning component and the rotational positioning component, line types of all points on an F-shaped track can be quickly and effectively pre-positioned according to the designed line type of the F-shaped track panel; meanwhile, displacement components are arranged in the positioning component and the rotational positioning component to obtain certain adjustment quantity so as to be convenient for carrying out secondary positioning on the F-shaped track, thereby meeting the batch assembly precision of F-shaped track panels of various line types; and the disassembly and assembly speeds of the F-shaped track panel on the positioning device are increased through the rotational positioning component. The positioning device disclosed by the invention can realize assembly of F-shaped track panels of the same line type only by pre-positioning once so as to be repeatedly applied to line type adjustment construction of multiple F-shaped track panels of the same type; and the adjustment is quick, the operation is simple, construction steps are simplified, and the production efficiency is improved.

The invention discloses an assembled track structure with built-in limiting modules. The structure comprises a base plate, the top face of the base plate is in millimeter-level precision through cast-in-place, or the base plate is prefabricated and formed in a factory, and a leveling adjusting layer is formed on a supporting foundation through cast-in-place, or the base plate is replaced with asphalt or high-performance concrete or an exiting novel material, the base plate is pressed down and formed by the track plate during cast-in-place so as to form a top surface with millimeter-level precision, a middle layer is laid on the base plate, a track unit is laid on the middle layer and comprises track plate modules which are sequentially arranged, and the track plate modules are prefabricated and formed; and the track unit further comprises a limiting blocking table used for conducting elastic limiting on the connected track plate modules in the longitudinal direction and the transverse direction, and the lower end of the limiting blocking table is fixed to the base plate. In the structure, multiple modules are combined, the applicability is high, the prefabricated modules are miniaturized and light, production, transportation and installation are convenient, the structure is simple, the assembly method is simple and convenient, the assembly efficiency is high, and replacement is easy.

The invention discloses a seamless steel rail insulation safety device, and belongs to the technical field of railway transportation. The device comprises two steel rail insulation clamping plates which are arranged at the two sides of two steel rail joints respectively, insulation layers are bonded to the fitting faces of the steel rail insulation clamping plates and a steel rail, arc hook faceswith the radius of 40 mm and the depth of 30 mm are machined in the centers of the fitting faces, and an insulation layer is also attached to each arc hook face; the middle of the surface of the outerside of each steel rail insulation clamping plate protrudes out for 30 mm; the overall length of each steel rail insulation clamping plate is increased by 103 mm; the raw material of the steel rail insulating clamping plates is 40Cr steel; the two steel rail insulating clamping plates are fixed together through a bolt, and an insulating bush is arranged in a mounting hole of the bolt. The devicehas a good reinforcing effect and good insulating performance and is convenient to install; during installation, steel rail welding parts do not need to be completely ground, and the strength of steelrail welding seams and the device cannot be influenced either.