188results about "Rails" patented technology

The flash welding mechanism comprises a static frame clamp, a movable frame clamp, an upsetting cylinder, a first clamping cylinder, a second clamping cylinder and a center shaft, a rail top block is installed on the center shaft, a first clamping piece comprises an outer side electrode and an abutting piece, and firstly, a first side face abuts against the rail head side face of the variable-section steel rail; then, the abutting end abuts against the rail head lower jaw of the variable-section steel rail, the spring is installed on the installation end and the outer side electrode in a compressed mode, and the bolt is installed at the installation end in a threaded mode; and finally, the variable-cross-section steel rail is clamped through the first clamping piece, the normal steel rail is clamped through the second clamping piece, the upsetting cylinder drives the upsetting piston rod, and flash welding of the normal steel rail and the variable-cross-section steel rail is achieved. The flash welding mechanism for the variable-cross-section steel rail can clamp and weld the variable-cross-section steel rail.

The invention relates to a medical imaging system (1) comprising a computer tomography gantry (20), a carriage (F), a main rail system (L) and a safety rail system (S), - wherein the computer tomography gantry (20) is movably mounted by means of the carriage (F) and the main rail system (L) such that a translational movement of the computer tomography gantry (20) can be carried out along the main rail system (L), - wherein the carriage (F) and the main rail system (L) are designed to transmit a drive force for the translational movement of the computed tomography gantry (20) from the carriage (F) to the main rail system (L) in a force-locking manner, - wherein the safety rail system (S) comprises at least one safety rail (SL) and at least one coupling element (KO), wherein the at least one safety rail (SL) is arranged on a floor section and is aligned in the same direction as the main rail system (L), wherein the coupling element (KO) is arranged on the carriage (F) or on the computed tomography gantry (20), wherein the coupling element (KO) is connected to the safety rail (SL) by means of a rear grip and / or in a form-fitting manner to prevent the computed tomography gantry (20) from tipping over.

The utility model relates to the technical field of rail transit, in particular to a double-end I-shaped steel type anti-falling guardrail which comprises a guardrail support, a walking rail and an I-shaped steel guardrail body. The I-shaped steel guard rail is clamped at the top of the insulating sleeve boot type elastic cushion block and fastened on the guard rail support through a detachable fastening mechanism, the walking rail is locked on the guard rail support through a locking mechanism, and the portion, making contact with the guard rail support, of the bottom of the walking rail is sleeved with an insulating spacer. The service life is doubled, meanwhile, the structural stability is higher than that of a single working face, meanwhile, the insulating property is high, the requirement for track circuit laying is lowered, the safety of a track circuit is further guaranteed, and therefore cross-signal-area laying can be conveniently conducted.

Transport system (100, 200, 300, 400, 500) for moving loads on a surface, comprising at least one rail track and at least one transport vehicle (50) running on wheels (12, 12A) on the rail track, characterized in that the rail track comprises a solitary rail (10, 312, 314, 412, 414, 512, 514) for receiving the load of the transport vehicle (50), that the transport vehicle (50) comprises at least one front wheel (12) and at least one rear wheel (12A), each bearing a tread (14) with a concave cross-section in the direction of travel one behind the other on the rail (10, 312, 314, 412, 414, 512, 514), and that the transport vehicle (50) further comprises support rollers (52A, 52B) includes, which are arranged on both sides of the front and rear wheels (12, 12A) and run on the ground on both sides of the rail (10, 312, 314, 412, 414, 512, 514).

The utility model relates to the technical field of rail traffic, in particular to an eccentric support type anti-falling guard rail which comprises a guard rail support, a walking rail and a guard rail, the walking rail is vertically locked at the middle bottom of the guard rail support through a first locking mechanism, a guard rail eccentric support with the top sleeved with an elastic sleeve shoe is arranged at the top of one side of the guard rail support in a clamped mode, and the elastic sleeve shoe is arranged on the guard rail eccentric support. The guard rail and the guard rail eccentric support are horizontally locked at the top of one side of the guard rail support through the second locking mechanism, the guard rail eccentric support and the elastic sleeve shoe are adopted to solve the problem that original cushion blocks are large in model number and prone to falling off, the transverse load is increased, the guard rail strength of the guard rail is further guaranteed, and the service life of the guard rail is prolonged. The eccentric support type anti-falling guard rail is convenient to install and not prone to falling off, meanwhile, the installation height is kept constant, the transverse load is high, and the strength of the guard rail is high.

The invention discloses a railway turnout plate cutting device which comprises a support, a mounting part is movably connected to the support, a laser cutting body is vertically arranged on the mounting part, a sliding frame is arranged on the mounting part, the sliding frame is slidably connected with the mounting part in the vertical direction, and the sliding frame is fixedly connected with the laser cutting body. A first screw rod is vertically arranged on the mounting part, the first screw rod is rotatably connected with the mounting part, two clamping assemblies are arranged on the support, each clamping assembly comprises an upper clamping plate and a lower clamping plate, a second screw rod is rotatably connected to the support, and the second screw rod is vertically arranged on the upper clamping plate and the lower clamping plate in a penetrating mode; the upper clamping plate and / or the lower clamping plate are / is connected with the second screw rods in a matched mode through threads, and a first transmission assembly is arranged between any second screw rod and the first screw rod. The laser cutting device aims at solving the technical problems that under the action of external force, the position of a metal plate is prone to change, and the distance between the laser cutting device and the metal plate cannot be adaptively adjusted according to the thickness of the metal plate.

The embodiment of the utility model provides rail welding equipment for both roads and railways. The rail welding equipment for both roads and railways is characterized in that a loading platform drives the rail welding equipment for both roads and railways to walk on railways or roads through a chassis; the auxiliary protection device covers the outer side of the welding machine, so that the welding machine is prevented from being in direct contact with the ground in the process of hoisting or putting down the welding machine by the hoisting device; meanwhile, when the hoisting device drives the welding machine to transfer, the welding machine is prevented from being in hard contact with other equipment, and the service life of the welding machine is prolonged; the rail lifting device is arranged to lift the steel rail to be in butt joint with the welding machine, when the welding machine conducts welding operation, it is guaranteed that the relative positions of the welding machine and the steel rail are fixed, and the welding effect is improved; one end of the hoisting device is rotationally connected to the frame, the other end of the hoisting device is connected with the welding device, the welding device is hoisted and moved, the workable range of the welding device is expanded, and the equipment applicability is improved.

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

The utility model relates to the technical field of railway transportation, in particular to a welding assembly for a track embedded part, which comprises a main body, the welding assembly is fixedly connected in the main body, and an embedded clamp assembly is arranged at the top of the main body; the non-shrinkage grouting material is used for pouring the welding mechanism, and the non-shrinkage grouting material has the advantages of being good in self-flowing performance, rapid in hardening, early in strength, high in strength, free of shrinkage, slight in expansion, free of toxicity, harmless, free of aging, free of pollution to water quality and the surrounding environment, good in self-sealing performance, rust-proof and the like. The rectangular truss has the advantages that a rod piece mainly bears tension or pressure, the function of materials can be fully played, the materials are saved, the structural weight is reduced, and the service life of the welding mechanism is prolonged. And sufficient rigidity, sufficient stability and good dynamic shock resistance are achieved.

According to the assemblable embedded track and the construction method thereof, on the basis that it is guaranteed that bolts are connected with pre-embedded sleeves corresponding to sleepers through through holes in a bottom plate, side plates on the two sides of a steel tank move outwards and are longitudinally disconnected at the positions corresponding to the pre-embedded sleeves, so that space is formed, and the inner sides of the disconnected positions of the side plates are connected through insulating plates; the insulating plates are arranged on the inner sides of the side plates on the two sides, the side plates on the two sides of the steel tank move outwards, namely, the insulating plates are additionally arranged between the steel tank and the steel rail, the clearance size in the steel tank is increased, and the steel tank is prevented from being damaged. The distance between the steel tank and the steel rail is increased; even if a large construction error occurs and the steel rail is in contact with the insulating plate, the minimum distance between the steel rail and the steel tank can still be forcibly guaranteed to be the thickness gap of the insulating plate, the insulativity of the steel rail and the steel tank is guaranteed, and the sparking risk is reduced.

The utility model discloses a steel rail insulation protection device for preventing stray current corrosion. The steel rail insulation protection device comprises an insulation wrapping layer and a first insulation coating, the insulating wrapping layer wraps the rail bottom at the joint of the steel rail fastener and the rail webs on the two sides, and the length of the insulating wrapping layer is larger than that of the fastener of the steel rail. And the first insulating coating is coated on the steel rail and is connected with the edge of the insulating wrapping layer. The rail fastener node is applied to the field of urban rail transit line equipment, the insulating wrapping layer is arranged at the fastener node of the rail to prolong the creepage distance of the steel rail, so that the rail-ground transition resistance is increased, and meanwhile, the insulating coating is arranged as a sealing and isolating interface which is difficult to pollute, so that the service life of the rail is prolonged. And the bonding boundary line of the insulating wrapping layer and the steel rail surface is fully covered and sealed, so that water, dust, pollution and corrosion invasion are prevented, the bonding durability of the insulating wrapping layer is enhanced, and the long-term insulation effect of the fastener system is improved.

The invention discloses a production method for improving the toughness of a hypereutectoid heat treatment steel rail, and belongs to the technical field of metallurgical materials. The steel rail comprises the following chemical components in percentage by mass: 0.80-1.10% of C; 0.30 to 0.90 percent of Si; mn is 0.55 to 2.25 percent; less than or equal to 0.025% of P; s is less than or equal to 0.025%; the alloy comprises the following components in percentage by weight: 0.20 to 0.90 percent of Cr, 0.04 to 0.30 percent of V, 0.03 to 0.10 percent of Nb and 0.0010 to 0.010 percent of RE; the total mass fraction of the Fe and the impurities is 100%. The production process comprises the following steps: a steelmaking production process: adding a rare earth alloy at a VD station; a steel rail rolling process; an online heat treatment process; and tempering. The invention aims to research parameters of different temperatures, cooling speeds, tempering processes and the like of the steel rail, improve the toughness of the heat-treated hypereutectoid steel rail and ensure the strength of the heat-treated hypereutectoid steel rail.

A walking device for installing equipment in a limited space, comprising a track and a walking device capable of walking along the track, the walking device comprising a main body structure, a guide assembly and an adjustment movement assembly rotatably connected to the main body structure, the main body structure being used for fixing the equipment to be installed, the guide rail being provided with a guide groove in the length direction and a rolling groove on both sides of the guide groove, the guide assembly being rolling fitted in the guide groove and enabling the walking device to move in the length direction of the guide rail, the adjustment movement assembly being rolling fitted in the rolling groove and being used for preventing the walking device from deviating to the sides of the track and derailing, in use, the equipment to be installed is installed on the main body structure of the walking device, the guide rail is installed on the carrier in the limited space, the guide assembly and the adjustment movement assembly can transport the equipment to the position where the equipment needs to be installed in the limited space through the guide rail, and the problem that the equipment cannot be installed and maintained in the later period due to the fact that the equipment installation space does not meet the installation personnel to reach is solved.

The invention relates to a mould (1) for aluminothermic welding of two rails (30), said mould (1) comprising at least two side parts (2A, 2B) made of refractory material, configured to be mounted temporarily opposite one another on either side of the ends of the rails (30) to be welded so as to define a moulding cavity between said rail ends (30), each side part (2A, 2B) comprising at least one filling pipe (10A, 10B) configured to guide molten metal from the upper portion of the mould to a zone of the moulding cavity located at the base (33) of a rail, characterised in that each filling pipe (10A, 10B) has a section (110, 120) which is perpendicular to a flow axis of the molten metal in the pipe (10A, 10B) and narrows so as to progressively reduce the width of said section (110, 120) in a direction opposite a mean longitudinal plane (P) common to the two rails to be welded.

The rail with the damping protection function comprises a vertical part, the top and the bottom of the vertical part are connected with a transmission part and a fixing part respectively, the bottom face of the fixing part is provided with a bottom groove extending into the vertical part, an elastic piece is arranged in the bottom groove, the bottom of the elastic piece corresponds to the bottom face of the fixing part, and the bottom of the elastic piece is connected with the transmission part. And the bottom surface of the elastic piece is an arc surface which is far away from the vertical part and protrudes downwards. The device has the beneficial effects that a triangular supporting structure formed by the fixed part, the vertical part and the transmission part is utilized to form the transmission part to assist the operation of a train; the bottom groove extends into the vertical part, so that the use amount of steel can be reduced; vibration and impact generated by train operation can be absorbed through the elastic piece in the bottom groove, and the service life of the rail can be prolonged.

The invention discloses a photovoltaic panel rail laying fixing piece and a working method. The photovoltaic panel rail laying fixing piece comprises a screw rod, the screw rod is sleeved with a shaft sleeve, locking devices are arranged on the two sides of the shaft sleeve, a fixing device is arranged on the shaft sleeve, and one end of the screw rod is fixedly connected with a U-shaped clamp. The U-shaped clamp can be directly clamped at the bottom of the rail, extra punching or transformation of the rail is not needed, the original structure of the rail is prevented from being damaged, and the influence of construction on railway operation is reduced; meanwhile, the fixing device can be accurately attached to the corners of the photovoltaic panel, and the problem that a traditional fixing piece is difficult to adapt to the special installation environment of the rail is solved. The screw rod can axially move along the shaft sleeve and is matched with the tightness adjustment of the locking device, so that the positions of the U-shaped clamp and the fixing device can be flexibly and finely adjusted, the levelness and the plane position of the photovoltaic panel can be easily calibrated, the problems of inclination, uneven stress and the like of the photovoltaic panel caused by installation errors are effectively avoided, and the long-term stable operation of the photovoltaic panel is ensured.

An oxygen and acetylene bottle body heat tracing device for an air pressure rail welding vehicle in a low-temperature environment comprises a control system, each oxygen and acetylene bottle body is provided with a heat exchange water jacket, and each heat exchange water jacket is provided with an inductive switch; an inlet of each heat exchange water jacket is communicated with a hot water distributor through a heat tracing water branch pipe of the heat exchange water jacket, each heat tracing water branch pipe is provided with an electromagnetic valve, an outlet of the water tank is communicated with the hot water distributor through a circulating pump, and an outlet of each heat exchange water jacket is communicated with an inlet of the water tank through a heat tracing water return main pipe. The water tank is filled with anti-freezing liquid and is heated by the heater; temperature sensors are arranged on the heat exchange water jacket, the water tank and in the field environment; and the temperature sensors, the inductive switch, the electromagnetic valve and the heater are electrically connected with the control system. When the external temperature is lower than 0 DEG C, the temperature of the oxygen acetylene tank is kept at about 20 DEG C during welding operation, acetylene can be fully gasified, oxygen and acetylene airflow meeting the pressure and flow requirements is provided, and the welding quality is guaranteed.

The utility model discloses a crossing track which solves the technical problem that in the prior art, temporary crossing transportation of large vehicle equipment in the factory entering installation stage is limited. The crossing track is erected between a span A and a span B and comprises a base, a plurality of positioning pieces, a track body and a plurality of sets of connecting assemblies, the base comprises a first base body and a second base body, and the first base body and the second base body are parallel to each other and are arranged in the length direction of the span A or the length direction of the span B at an angle; the plurality of positioning pieces are arranged on the first seat body and the second seat body; the rails comprise a first rail and a second rail; one part of the connecting assembly is connected with the first rail and the first seat body so as to fix the first rail on the first seat body; and the other part of the connecting assembly is connected with the second rail and the second seat body so as to fix the second rail on the second seat body. Therefore, the span crossing track is arranged between the span A and the span B, the installation process is convenient and fast, the cost of secondary reshipment of the vehicle equipment is reduced, and the transportation efficiency of the large vehicle equipment is improved.

The utility model provides a gauge and rail cant dual control tool which is used for adjusting the gauge and the rail cant of a steel rail arranged on a tool frame and comprises gradient iron pads, reinforcing calipers and fixing devices which are symmetrically arranged at the two ends of the tool frame. The gradient iron pad is arranged between the tool frame and the steel rail, the upper end face of the gradient iron pad is provided with a rail bearing groove used for containing the steel rail and sawtooth-shaped protrusions located on the two sides of the rail bearing groove, and the gradient of the inner bottom face of the rail bearing groove is 1: 40; the lower end face of the reinforcing caliper is provided with a stepped groove and a sawtooth-shaped groove. The fixing device comprises a nut and a bolt which are fixedly arranged on the lower end face of the tool frame. The gauge and the rail cant can be effectively controlled by adopting the gauge and rail cant dual control tool, the field operation is simple, the assembly and disassembly are convenient, the transportation is convenient, and the disturbance influence of a vibrating rod in the concrete pouring process is small; and the tool can be disassembled, accessories can be independently replaced after the tool is damaged, and the service life is long.

Provided is a rail that has excellent wear resistance and damage resistance. In a rail (1) according to the present embodiment: the metal structure of a head surface portion (10A) from a head portion outer surface (10S) to a depth of 20 mm is composed of pearlite; the Vickers hardness is 400 HV or more; the hardness H1 at a depth of 1 mm, the hardness H10 at a depth of 10 mm, and the hardness H20 at a depth of 20 mm from the head portion outer surface (10S) satisfy formula (1); and a hardness gradient S1 of a first head surface portion region (10A1) is 2.00 to 10.00 HV / mm, a hardness gradient S2 of a second head surface portion region (10A2) is 0.25 to 2.50 HV / mm, and a hardness gradient S3 of a third head surface portion region from a depth of 20 mm to a depth of 40 mm is 1.00 to 4.00 HV / mm, wherein the hardness gradient S1 of the first head surface portion region and the hardness gradient S2 of the second head surface portion region satisfy formula (2).　(1): H1 > H10 > H20 (2): S2 ≤ 0.95S1

The utility model discloses a distance-adjustable railway gauge pull rod which comprises a storage shell, the storage shell is connected with a storage piece, the storage piece comprises an adjusting piece installed on the storage shell, the adjusting piece comprises a two-way screw rotationally connected along the X axis, a worm and gear assembly is installed in the middle of the two-way screw, and the worm and gear assembly is connected with the storage shell. The middle end of the top of the storage shell is rotationally connected with a hand wheel used for driving the worm and gear assembly. According to the distance-adjustable railway gauge pull rod, the two-way screw rod, the worm and gear assembly, the hand wheel, the positioning pin, the sliding rod, the two sets of moving blocks, the indicating block and tempered glass are matched with one another, the distance between multiple sets of insulating pull rods can be conveniently adjusted, meanwhile, the adjusting distance can be conveniently read out in time, after adjustment is completed, the adjusting end can be conveniently locked in time, and then the adjusting precision is improved; and the adjusting end is prevented from being loosened to influence the railway gauge adjustment.

The invention relates to a grooved rail for a rail vehicle, comprising a rail head (1) with a running surface (2) for a wheel of the rail vehicle and an adjoining groove (3) for receiving a wheel flange, a plurality of projections (4) arranged at intervals in the groove (3) along a longitudinal direction (I) of the rail, and a filler profile (7) that partially fills the groove (3), receives the projections (4) on a lower profile section, and extends beyond the projections (4) along a height of the groove (3). The lower profile section has an insert (9) extending along the longitudinal direction (I) of the rail. The invention also relates to a method for disassembling a grooved rail, wherein, starting from a point of attachment, the filler profile (7) is lifted out of the groove (3), separates from the projections (4), and is removed as a single, continuous body.

The application discloses a post-welding heat treatment method for dissimilar steel rail in field low-temperature construction environment, which comprises five stages: the surface temperature of the rail joint formed by welding is 700-900 DEG C, the rail joint is naturally cooled in the field low-temperature construction environment, the surface temperature of the rail joint is reduced to 400-450 DEG C, the surface temperature of the rail joint is reduced to 320-380 DEG C under the second cooling speed, the rail joint is heated in the whole section in the form of heat compensation, the surface of the rail joint is heated to 850-890 DEG C, the rail joint is cooled to 350-380 DEG C under the fourth cooling speed, and the rail joint is cooled to 180-220 DEG C under the fifth cooling speed. The application can improve the tread hardness of the rail reduced due to welding, avoid the abnormal martensite structure generated in the process of welding and post-welding heat treatment, improve the impact toughness of the rail joint, and ensure the service performance of the dissimilar rail joint and the railway operation safety.

The present invention relates to the technical field of tunnel construction, and in particular to a transverse movement system and transverse movement method for track equipment. The transverse movement system for track equipment comprises: a transverse movement track; a support assembly for supporting the track equipment, wherein the support assembly can be vertically extended and retracted, the support assembly can be supported and arranged on the transverse movement track, and the support assembly can move relative to the transverse movement track. By using the transverse movement system for track equipment described in the present invention to transversely move the track equipment, the operation is simple, the movement is fast, and the method is safe and reliable. The track equipment can be transversely moved safely and efficiently to meet the needs of actual construction operations.

A method for brazing an electrically conducting connecting piece, for example a cable shoe, of an electrically conducting material to a workpiece of electrically conducting material, by means of a temperature controlled brazing process in which the heat necessary for brazing is generated by striking an electric arc between a carbon electrode, and the electrically conducting connecting piece, where the voltage and current is electronically controlled by control electronics to achieve a temperature development to result in a martensite free brazing, and wherein the DC voltage applied is using the carbon electrode as the negative pole, and using the electrically conducting connecting piece as the positive pole, and wherein the carbon electrode is having a tapering, bevelled, or pointy end at the end facing the electric arc.

Rail profile system (100), in particular for a traveling crane or bridge crane, comprising a rail profile (110), wherein the rail profile (110) extends in a longitudinal direction (112) and is designed for placement on a support (102), and at least one connecting element (122), wherein the connecting element (122) is arranged laterally with respect to the longitudinal direction (112) next to the rail profile (110), wherein the connecting element (122) is welded to the rail profile (110) and wherein the connecting element (122) is designed for connection to the support (102), wherein the connecting element (122) has a waist (144) and / or at least one recess (146).