Device to extend threads of long-welded rails during relaxation of temperature stresses
 Method to shake rail loop / 2455413Method to shake a rail loop consists in applying strikes against the rolling surface of a rail by means of an impact tool. The frequency of striking makes at least 300 strikes per minute. The impact tool is additionally equipped with a measurement device tracking variations of the stressed condition of a rail thread during striking. |
 Method to extend continuous welded rail track lengths / 2453648Method to extend lengths of a continuous welded rail track and giving them size complying with the size at the optimal temperature includes operations to disconnect a rail length from intermediate fixtures, to raise lengths with a certain effort to a rated height, extension of lengths and their lowering with subsequent fixation. Operations are carried out with the help of a track-laying crane. In process of work a length at one side is left fixed. The rail is caught under the rail head by roller anti-canting grips. Lifting is carried out based on the difference between the laying temperature and the optimum temperature to set up a wave with a certain coordinate. After initial lifting of each length with a certain effort at a rated value, the lifting force for each length is left permanent. As a result of a longitudinal effort directed towards the crane displacement, the wave ordinate is increased in compliance with the value of the length extension. The crane is moved along the length to its end, and the length is attached behind the crane. |
 Method of replacing reusable rails by continuous welded track rails with simultaneous assignment in design interval of fastening temperatures / 2450096Method of replacing reusable rails by continuous welded track rails with simultaneous assignment in design interval of fastening temperatures comprises uncoupling reusable rails over their entire length, lifting them and displacing inside track, lifting continuous welded rails inside the track and displacing them onto rail bottom straps. Said operations per carried out using track laying crane. Reusable rails are lifted above joints and shifted inside track by means of electromagnetic grippers with limiting rollers. Every rail is gripped by head, and lifted above joints of reusable rails by grippers with anti-kant rollers. Thereafter, rails are bent in plan to track width to fit them onto rail bottom straps by said two limiting rollers. Every rail is lifted in vertical plane to design height proceeding from the difference between removed rail temperature and design temperature of jointing. Grane is moved aloug the rail till it is end. The rail is fixed behind the crane. |
 Method to install continuous welded rail / 2437978Method to install a continuous welded rail consists in the fact that a rail is laid with its foot onto rollers installed on a slab track, its one end is connected to a previously laid rail, a longitudinal force is applied to its other end as adjustable in value. The rail laid onto rollers is heated, rollers are removed, and the rail is fixed on the slab track. At the same time the start section of the rail is heated until it is fully laid onto the rollers, and the start control sections of the rail are extended to the rated length. |
 Device to re-lay rails with replacement of working edge in curved sections of railway track with various types of rail braces / 2431712Device to re-lay rails of railway track with replacement of a working edge in curved sections of track with various types of rail braces comprises frames arranged on supports connected by ropes with each other and with a traction unit. Each frame for purpose of rail guidance is equipped with support rollers installed on frames at both sides of longitudinal axis of the device symmetry plane and displaced on one of the frames relative to each other by height at the value of at least the rail height. The frames are made with the possibility to vary distance between support rollers and are equipped with indexing holes for installation of supports made with the possibility of their replacement. Supports are roller beams installed on sliding supports in guides. Each support roller on frames is installed onto supports made with the possibility to change angle of rollers incline in vertical plane and rotation in horizontal plane. One of frames is equipped with additional rollers made with the possibility of displacement as rails are placed onto support rollers. The other frame is equipped with spring-loaded knives. |
 Method of relieving stress in rail frame of jointless track / 2399714Proposed method comprises removing rail frame intermediate fasteners, lifting to preset height, relieving stresses, lowering the frame and jointing it in place. Said jobs are carried out with the help of track-laying machine. In performing the jobs, the frame one side is kept fastened. Roller anti-twister clamps 3 are used to clamp rail head to lift the rail to preset height. Lifting is carried out with due allowance for difference between rail-laying temperature and optimum temperature. Track-laying machine moves along the frame till its end for it to be fastened behind the crane. |
 Moving device for attaching long joints by means of zhbr-type fastenings during replacement of inventory rails / 2385376Moving device for attaching long joints by means of ZhBR-type fastenings during replacement of inventory rails consists of the cart moving along rails, on the frame of which nut setters are mounted in pairs above each rail. Spindles of each nut setter are connected to each other by means of cross-beam moved in vertical plane from power cylinder and interacting by means of compensating springs to the cross-bars connected to the heads of socket spanners. On the cross-beam there installed on the outer side of each spindle is additional power cylinder, and gripping mechanism with shaped gripping jaws to lift the spring clip of the attachment and pusher for pushing the above clip, which are connected to power cylinder. Pusher is made in the form of double-arm lever on the upper arm of which there is curved groove to arrange a slide which is connected to the stock of the above additional power cylinder in it. |
 Method and device to unload long rails from railway vehicles / 2361801Proposed device designed to unload long rails from railway vehicle (10), on the go on rail bed, comprises frame (14) with rimmed wheels (22), and couplers to joint the said frame and vehicle together. The said frame is equipped with gantry crane (40) moving on it parallel to rail bed and furnished with boom (52) that has carrying hook to grip rails on the railway vehicle. The said frame comprises at least one guiding box (76) with mechanical drive to deliver rails from the said vehicle, via the guiding box, onto rail bed. The proposed method consists in that rails are fed through the said guiding boxes onto rail bed when the train runs at the same speed, the rails are fed back at. Railway vehicle features the wheels that can be lifted above the railway to allow towing it to railway construction site. |
 Device for holding track lengths in their loading and unloading / 2338824Invention relates to railroad machinery, particularly, to the loading-unloading devices incorporates with rail-carrying rolling stock and rail length storages. The proposed device comprises a gantry mounted on a fixed base and incorporating rail grippers, each being linked to the gantry by a cable wound up the drum fitted on the shaft attached to the gantry. The said drum is fitted on the aforesaid shaft by means of a torque-limiting clutch representing, for example, a spring-loaded friction tapered pair. The track length ends are furnished with locks, their mating pockets being arranged on the rolling stock or the storage. |
 Method of replacing railway sections / 2327001Method of replacing the welded railway sections involves the following jobs. After laying the end of the welded section on the base when moving devices are stopped, the rails to be replaces are cut out along the cross-section perpendicular to the line and at a distance from the said end defined from the formula depending upon the designed elongation of the railway section and upon the designed railway section elongation factor defined empirically. Then, the rail ends cut out are moved to the position parallel to the line axis. |
 Method of re-laying of track skeletons / 2298605Invention can be used at replacement of long-length track skeleton delivered to place of laying in assembled state. According to proposed method, new track skeleton located on train in vertical plane is shifted into horizontal position. End of old track skeleton is raised and fitted into free cell on train and old skeleton is loaded on train. End of new track skeleton is lowered and butt-joined with track skeleton of previously laid track, and is placed onto base by bringing train from under the skeleton, and then other end of new track skeleton is butt-joined with previously laid track. Loading and unloading of track skeleton is effected in horizontal plane. |
 Rail lengths stockpiling device / 2298606Invention relates to mechanization of track works connected with stockpiling of rail lengths on intermediate storage grounds. Proposed device includes additional guide equipment including mechanisms for cross displacement of rail lengths relative to rail track furnished with release rail grips and pulling equipment including pair of flexible ties secured of fixed stops for connecting with ends of rail lengths of train. Mechanisms for cross displacement of rail lengths are made in form of horizontal frames arranged in end of rail-carrying train and on trailing inclined ramp connected to train arranged symmetrically in pairs relative to train axis in crosswise manner. Drive truck carrying rail grip is installed on each horizontal frame. Rail grip is made in form of pair of rollers with vertical axles of rotation. Working profile of each roller suits profile of cavities of rail length. Truck drive is two-speed. Device is furnished with horizontal beam placed across track, with row of holes according to location of lengths of rails to be stockpiled. Pair of guide holders is secured in two of said holes to pass flexible ties. Said holders can be re-placed along beam. |
 Method of stockpiling of rail lengths / 2298607Rail length are stockpiled from outer side of track in form of pyramids in several tiers. Each length is acted upon and held from turning over by at least four rail grips arranged in end of train and on trailing inclined ramp. Firstly, ends of pair of rail lengths are pulled off from train or pulled onto train until they rest simultaneously on platform and train to provide self-bending of ends in vertical, then rail grips in extreme positions are brought to bent ends of lengths and are closed on lengths to bend them to S-shape in plan whose end section correspond to locations and directions in stores and on train and then grips are fixed relative to ramp and rail-carrying train and then, moving the train, pairs of rail lengths are unloaded or loaded until all pairs of rail lengths are unloaded or loaded. Ends of pair of lengths are secured on fixed stops on ground of store by flexible ties whose direction is changed and are fixed by means of horizontal beam with adjustable stops which is placed across track, and pair of flexible ties is passed through beam and secured on fixed stops. Completing of loading of rail lengths onto train is provided by stock rails arranged in end of stores. |
 Method of re-laying track skeleton / 2303095Invention can be used in replacement of long-length track skeleton delivered to place of repair in assembled state during major repairs of tracks. According to proposed method, skeleton to be placed in track is arranged on vehicle in vertical position, end of new track skeleton is turned in to horizontal position and is butt jointed with previously laid track skeleton. Then vehicle is moved from under rail skeleton arranged on vehicle and other end of track skeleton is butt joined with track skeleton which is not to be removed. Old track skeleton is turned from horizontal position into vertical position on track-laying crane and platform cars adjoining the crane and equipped with slewing gear, then new track skeleton is turned from vertical position into horizontal position in track-laying crane and platform cars adjoining the crane and equipped with slewing gear and is lowered by crane onto track base on horizontally arranged end sections pf track skeleton. |
 Method of putting laid rail lengths of continuous welded rail track into operation and rail slides for implementing the method / 2322542Invention can be used when laying rail lengths continuous welded rail tracks from running platform onto rail base bringing them simultaneously into operating temperature conditions. According to proposed method, continuous longitudinal forces are applied through rail slides to unloaded rail lengths on running platform in process of moving platform from under rail lengths. Rail slides are made in form of disks fitted on axle and engaging with rail. Surface of disks follow corresponding surfaces of rail lengths. Disks are positively pressed to corresponding surfaces of rail lengths and are positively rotated to build expanding and compressing stresses in laid rail length under laying. Invention is aimed at reducing labor input owing to carrying out unloading and attachment of rail lengths on rail base at temperature of rails equal to rail length fastening temperature adopted for constant operating conditions and provision of designed values of expanding or compressing stresses corresponding to adopted temperature of rail length fastening for constant operating conditions using rail slides when rail lengths of continuous welded rail track are laid at temperatures differing from their fastening temperature for constant operating conditions. |
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Method of replacing railway sections / 2327001 Method of replacing the welded railway sections involves the following jobs. After laying the end of the welded section on the base when moving devices are stopped, the rails to be replaces are cut out along the cross-section perpendicular to the line and at a distance from the said end defined from the formula depending upon the designed elongation of the railway section and upon the designed railway section elongation factor defined empirically. Then, the rail ends cut out are moved to the position parallel to the line axis. |
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Device for holding track lengths in their loading and unloading / 2338824 Invention relates to railroad machinery, particularly, to the loading-unloading devices incorporates with rail-carrying rolling stock and rail length storages. The proposed device comprises a gantry mounted on a fixed base and incorporating rail grippers, each being linked to the gantry by a cable wound up the drum fitted on the shaft attached to the gantry. The said drum is fitted on the aforesaid shaft by means of a torque-limiting clutch representing, for example, a spring-loaded friction tapered pair. The track length ends are furnished with locks, their mating pockets being arranged on the rolling stock or the storage. |
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Method and device to unload long rails from railway vehicles / 2361801 Proposed device designed to unload long rails from railway vehicle (10), on the go on rail bed, comprises frame (14) with rimmed wheels (22), and couplers to joint the said frame and vehicle together. The said frame is equipped with gantry crane (40) moving on it parallel to rail bed and furnished with boom (52) that has carrying hook to grip rails on the railway vehicle. The said frame comprises at least one guiding box (76) with mechanical drive to deliver rails from the said vehicle, via the guiding box, onto rail bed. The proposed method consists in that rails are fed through the said guiding boxes onto rail bed when the train runs at the same speed, the rails are fed back at. Railway vehicle features the wheels that can be lifted above the railway to allow towing it to railway construction site. |
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Moving device for attaching long joints by means of zhbr-type fastenings during replacement of inventory rails / 2385376 Moving device for attaching long joints by means of ZhBR-type fastenings during replacement of inventory rails consists of the cart moving along rails, on the frame of which nut setters are mounted in pairs above each rail. Spindles of each nut setter are connected to each other by means of cross-beam moved in vertical plane from power cylinder and interacting by means of compensating springs to the cross-bars connected to the heads of socket spanners. On the cross-beam there installed on the outer side of each spindle is additional power cylinder, and gripping mechanism with shaped gripping jaws to lift the spring clip of the attachment and pusher for pushing the above clip, which are connected to power cylinder. Pusher is made in the form of double-arm lever on the upper arm of which there is curved groove to arrange a slide which is connected to the stock of the above additional power cylinder in it. |
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Method of relieving stress in rail frame of jointless track / 2399714 Proposed method comprises removing rail frame intermediate fasteners, lifting to preset height, relieving stresses, lowering the frame and jointing it in place. Said jobs are carried out with the help of track-laying machine. In performing the jobs, the frame one side is kept fastened. Roller anti-twister clamps 3 are used to clamp rail head to lift the rail to preset height. Lifting is carried out with due allowance for difference between rail-laying temperature and optimum temperature. Track-laying machine moves along the frame till its end for it to be fastened behind the crane. |
FIELD: construction.
SUBSTANCE: device to extend threads of long-welded rails during relaxation of temperature stresses and giving them length corresponding to the size at optimal temperature is equipped with sensors to detect a force of raising threads joined with a crane lifting mechanism. Rail grips are placed on a carriage movable in the horizontal plane, and are additionally equipped with support rollers with interaction with a foot of thread rail during their lift. The carriage is installed on a frame hingedly fixed at the end of a rail-laying crane platform and is attached to a cross beam of the crane lifting mechanism on suspensions.
EFFECT: increased efficiency of a device.
3 dwg
The invention relates to the field of content jointless rail and can be used for discharge of thermal stresses in continuously welded rail when prescriptie lashes for permanent operation.
The most important task in the difficult economic situation of the Railways was the development and implementation of resource-saving technical solutions and technologies, carrying out a complex of works to increase the reliability of the path, and on this basis the reduction of operational costs and ensuring traffic safety. Laying rail lashes welded railway track is made in different temperature conditions, so that changes in temperature are excessive longitudinal tension - compression (in the summer) and tensile (in winter). In this connection, when established for this region of the optimum temperature range, is a certain amount of work on prescriptio lashes with discharge excess temperature stresses.
A device on the bus. mon. The USSR №1414910, EV 29/20 "Device for discharging thermal stresses", which lengthening lashes at low temperature stresses is carried out by forced movement of the rail in either direction along the entire length.
Currently the time lengthening lashes at low temperature stress is performed using a hydraulic tensioning device and the obligatory hanging rails for roller bearing or sliding of the pair of plates, mounted on each 15th sleeper (Technical instructions on the device, installation, maintenance and repair of seamless way. - M.: Transport, 2000, ñ.38-43).
The disadvantages of the known methods of discharge temperature stresses and devices for their implementation are that you must perform a large volume of transactions: the loaded whips, the rise of scourge for posting it on roller bearings or sliding of the pair of plates, the shaking whips percussion instruments, the use of force tensioning device for changing the length of the scourge, the rise of scourge for cleaning the roller bearings or sliding pairs of plates, the final consolidation of the lashes in place. Particularly difficult is the lengthening lashes at low temperature stress in the long whips that cut short - 800 meters, produce discharge, cut off excess length and re-weld in long lashes. All these operations require large labor costs and time, which increases operational costs, often prevents doing work to consolidate the lashes at the optimum temperature range and necessitates the provision of a long process of "Windows".
A device for lengthening rail lashes at low temperature stress on the patent of Russian Federation №2399714, EV 31/18, EV 29/17 "Pic is b discharge thermal stresses in continuously welded rail jointless tracks", where rail lash lift in a vertical plane on the estimated value of catch up by each of the scourge under the rail head roller protivooskolochnye grippers associated with the platform, for example, track laying crane through the drawbar is pivoted on the platform and connected with the lifting device of the crane. A disadvantage of the known device is that the rise of whips catch up by each of the scourge under the rail head roller protivooskolochnye grips will not allow you to raise the tail and adjacent balancing rails, as interfering with the pads, so with the help of the known device it is impossible to produce a lengthening of the tail part of the scourge, it is necessary to delay the tail part of the scourge, thereby moving all the whip lying on the sleepers, which is extremely difficult.
This solution is taken as a prototype.
The technical result of the proposed device is to increase its efficiency by eliminating this drawback.
To achieve the technical result of the proposed device for lengthening rail lashes at low temperature stress in the lashes and give them a length corresponding to the size at the optimum temperature, containing rail grips are the s protivooskolochnye rollers for engagement with the rail heads of the whips in the lifting operation and associated with the platform and lifting mechanism of a vehicle, for example the railway track-laying crane entered the sensors determine the effort of lifting the lashes associated with the lifting mechanism of the crane and rail clamps are placed on movable in the horizontal plane of the carriage and is further provided with supporting rollers for engagement with the sole rails lashes in the lifting operation, the carriage mounted on the frame, a hinge mounted on the end platform of the railway track-laying crane and attached to the cross beam lifting mechanism of the crane on the suspensions.
Introduction sensors determine the effort of lifting the lashes associated with the lifting mechanism of the crane, allows for a continuous adjustment of the height of the bar attached to the device, as in the process of moving crane, due to the longitudinal force, the rail height of the wave increases. Implementation support rollers with the opportunity to interact with the sole rails lashes in the lifting operation allows the lengthening of the tail lashes and adjacent balancing rails, and protivooskolochnye rollers protect every lash from tipping over, Placing rail hooks on movable in the horizontal plane of the carriage provides the displacement of the grips in the curves of the track sections.
1 shows a diagram of lengthening lashes, start and end (stroke) position of the crane;
<> figure 2 shows the device in the process;figure 3 shows the rail grip on the carriage with the drive installed on the frame.
Rail whip 1 shown in figure 1, undergoes surgery for lengthening during discharge temperature stress and to give it a length corresponding to the size at the optimum temperature. Figure 1 also shows the track laying crane 2, rails 3 adjacent the path on the left, levelling rails rails 4 and 5 adjacent the path on the right. Dashed lines show the track laying crane 2 in end position. Wave track scourge 1, shown in figure 2, is created by using the proposed device for lengthening lashes. The device contains two rail grip 6, mounted on the carriage 7. Each rail grip 6 has protivotrevozhny roller 8, are made with wheels and installed in the upper part of the grip with the possibility of the circumference of the head rail 1 scourge top when lifting. Rail grip 6 is further provided with a support roller 9, which is installed at the bottom of the grip for engagement with the bottom rail of the scourge 1 by lifting the lashes. Support rollers 9 are of the flanges, the distance between which corresponds to the width of the foot of the rail. The carriage 7, the carrier rail grippers 6, mounted on the frame 10 can move in the horizontal plane drive mechanism is om 11, what is needed to offset rail grippers 6 curve track sections. The frame 10 is connected with the platform of the railway track-laying crane 2 by means of the drawbar 12, hinged to the end of the platform and attached to the cross beam 13 of the lifting device of the crane 2 (for example, winch crane) on the suspension 14. The device is equipped with a sensor 15 for determining the effort of lifting rail lashes 1 associated with a lifting device of the crane. The sensors 15 are installed, for example, the suspensions 14.
Device for extending rail lashes works as follows.
The track laying crane 2 set at the junction of rail lashes 1 and the rail 3 adjacent to the left path. The yoke 13 of the lifting device of the crane 2 and, respectively, the frame 10 is lowered onto the rails of the pipe 1 so that protivooskolochnye rollers 8 track grips 6 covered the top of the rail head of the pipe 1, and the lower part of the gripper 6 fell in prepared for this purpose sleeper box (not shown). Under each sole rails lashes 1 down the support roller 9 and fix them at the bottom of the hooks 6. Then include the winch lifting device of the crane 2 and the rails of the cat 1 lift on the calculated height based on the difference between laying temperature and the optimal temperature. Lifting height is determined from the condition of compliance with equality (as shown in the prototype - patent No. 2399714) Δ=Δ t
Here Δt=α(Topt-Tf)l - temperature elongation plot scourge on the wavelength,
where α=0,00018 1/hail - the coefficient of linear expansion of steel rail;
Topt- the optimum temperature styling whip;
Tfthe actual temperature at which was laid a lash.
The value of Δ, defined as the difference between the wavelength l and its projection, is found from the equation
where hn- the initial height of the scourge.
Obviously, for lifting lashes in height must be accompanied by a certain force Fnthat is implemented by the lifting mechanism of the crane 2, limited by the configuration of the sensor 15 to determine the effort of lifting (figure 2). Crane 2 begins to move along the rail lashes 1, subject to extension. Protivooskolochnye rollers 8 track grips 6 protect each rail whip 1 from tipping over. In each of the scourge occurs longitudinal force's causing the change in the height of the lift in accordance with addictions
,
where l is the wavelength of the bending of the scourge;
E - the modulus of elasticity of steel rail;
Jxthe moment of inertia of the rail.
It is obvious that the increase in wave height leads to stress reduction Fn. In this regard, the sensor triggers 15 definitions efforts, from which comes the SIG is al on the lifting mechanism, and, accordingly, is selected as the slack of the rope suspensions 14. Thus, the wave height in the course of movement of the crane 2 is gradually increased. At the end of the movement of the crane 2 whip 1 reaches a value of hKonwhile the value of ΔKoncharacterized as a difference between the wavelength and its projection, equals
Thus
where L is the length of a string.
Therefore, in the configuration of the wave is fully hosted the desired lengthening lashes 1. To whip 1 has been completely entered into the required length, it is necessary to bring the wheel laying crane 2 until the end of the pipe 1, while holding the state of the adjacent waves surge rails 4. It is provided with rail clamps 6, the support rollers 9 which, supporting the rails of the pipe 1 under the sole, allow the passage of the grippers 6 through the pad. At the end of the movement of the crane 2 yoke 13 of the lifting device of the crane 2 is lowered. The ends of the lengthening of the pipe 1 and egalitarian rails 4 is lowered to the sleepers, cut off a piece, equal dismal elongation, and pristykovyvayas to rails 5 adjacent the path on the right. Increases the efficiency of the device by eliminating additional operations for lengthening the tail end of the pipe when the discharge temperature stresses in continuously welded rail and give them length, correspond to what her size at the optimum temperature.
Device for lengthening lashes jointless tracks with low temperature stress and give them a length corresponding to the size at the optimum temperature, containing rail clamps, bearing protivooskolochnye rollers for engagement with the rail heads lashes when they rise, and associated with the platform and lifting mechanism of a vehicle, for example, track laying crane, characterized in that the device is equipped with sensors to determine the effort of lifting the lashes associated with the lifting mechanism of the crane, and rail clamps are placed on movable in the horizontal plane of the carriage and is further provided with supporting rollers for engagement with the sole rails lashes in the lifting operation, the carriage is installed on the frame, a hinge mounted on the end platform of the railway track-laying crane and attached to the cross beam lifting mechanism of the crane on the suspensions.