CN102296495B - Long steel rail laying and welding construction process under conditions of large temperature differences and strong sandstorms - Google Patents

Abstract

The invention discloses a long steel rail laying and welding construction process under the conditions of large temperature differences and strong sandstorms. The process comprises the following steps: carrying out track panel nail interlocking construction: nail interlocking construction is continuously carried out on a plurality of track panels used for construction by adopting track panel nailinterlocking lines, wherein the track panel comprises a plurality of sleepers and two tool rails arranged on the sleepers; 2. carrying out track panel lifting; 3. carrying out track panel laying construction; 4. carrying out long steel rail laying construction: the construction process comprises the two steps of displacing long steel rails and replacing and laying the tool rails in the laid trackpanels segment by segment by adopting the long steel rails; 5. carrying out plastic gas pressure welding on the two adjacent laid long steel rails by utilizing a dustproof incubator; and 6. carrying out stress dispersion and locking construction. The long steel rail laying and welding construction process provided by the invention is reasonable in design, simple in construction steps, convenient in realization, short in construction period and high in construction quality, and can be used for solving the problems of long construction period, low construction efficiency, poor construction effect and difficultly controlled welding quality and the like existing in the long steel rail laying construction under the conditions of large temperature differences and strong sandstorms.

Description

Laying of welded long rails and welding procedure technique under the large temperature difference, the husky condition of high wind

Technical field

The invention belongs to the track laying technical field of construction, especially relate to laying of welded long rails and welding procedure technique under a kind of large temperature difference, the husky condition of high wind.

Background technology

In the newly built railway tin crow line work progress, the long rail string of required laying is all through both wired transportations, and deposits in base of the rail ground in the respective episode.During practice of construction, under the harsh climate condition of the Inner Mongol, how rationally to determine from depositing the base of the rail ground long rail string to be transported to the place of laying a railway track, how to dispose construction equipment and make resource optimum, how to guarantee the Site Welding quality of long rail under the adverse weather condition, locking temperature rationally is a construction difficult problem.Because the natural environment in the Inner Mongol is abominable, sandstorm, crop smothering, the natural calamities such as snow disaster are more, day and night temperature reaches degree more than 40, Changes in weather is variable, temperature is sometimes hot and sometimes cold, weather conditions and interior ground railroad track engineering environment of living in are completely different, the husky weather of high wind is more, thereby existence spreads station track rail gap control in the frame engineering construction in the work progress, the whole road of machinery maintain road, the gapless track welding, there is long construction period in many technological difficulties such as stress dispersion and locking during practice of construction, efficiency of construction is low, construction effect is relatively poor, welding quality is difficult to the multiple practical problems such as control.

Summary of the invention

Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, laying of welded long rails and welding procedure technique under a kind of large temperature difference, the husky condition of high wind is provided, it is reasonable in design, construction sequence is simple, realization is convenient and short construction period, construction quality high, can solve effectively that the long construction period, the efficiency of construction that exist in the laying of welded long rails work progress under the existing large temperature difference, the husky condition of high wind are low, construction effect is relatively poor, welding quality is difficult to the problems such as control.

For solving the problems of the technologies described above, the technical solution used in the present invention is: laying of welded long rails and welding procedure technique under a kind of large temperature difference, the husky condition of high wind is characterized in that this technique may further comprise the steps:

Section of track nail on line and section of track nail connection job practices are routinely adopted in the construction of step 1, section of track nail connection, and working a plurality of sections of track are followed closely the connection construction continuously; The described section of track comprises plurality of sleepers and two tool tracks that are installed on the many described sleepers;

Step 2, section of track handling: in the section of track nail connection work progress, adopt hanging device and transport vehicle in the step 1, the section of track of finishing constructing is transported to the scene of laying in batches;

Step 3, section of track laying construction: adopt track-laying machine and according to the conventional laying method of the section of track, lay the on-the-spot section of track and lay being transported to, and obtain the track that is laid to by the section of track;

Step 4, laying of welded long rails construction, its laying construction process is as follows:

401, long rail displacement: according to the paving location that designs in advance, and adopt shift equipment to be transported in advance and lay many on-the-spot long rail, move to respectively and laid on the sleeper of finishing track in the step 3;

402, switch tracks: according to the method that the switches tracks job practices of routine, adopt the long rail described in the step 401 that the tool track in the section of track described in the step 3 is changed the shop piecemeal;

Step 5, long rail field welding construction: adopt the gas pressure welding trailer and according to plasticity air pressure Fundamentals of Welding, to change in the step 4 spread after before and after two adjacent described long rail weld, its welding process is as follows:

501, prepare before the weldering, its preparation mainly may further comprise the steps:

5011, the rail end is processed: adopt grinding apparatus, the rail end of two soldered long rail is carried out respectively grinding process;

5012, press-connection machine location: adopt the rail welding press-connection machine, the rail end of two described long rail is fixedly clamped, and so that the flange of rail of two described long rail is concordant;

5013, dust-proof insulating case cover dress: in the joint outside of two described long rail, cover fills a dust-proof insulating case, and described dust-proof insulating case is the outside casing that is laid with insulation layer;

502, plasticity air pressure welding: in described dust-proof insulating case, and according to routine is carried out the welding of plasticity air pressure to rail welding method two described long rail are carried out the welding of plasticity air pressure, and obtain the gapless track that construction is finished;

Step 6, destressing and locking construction: according to conventional gapless track destressing and locking construction technology, the described gapless track that construction in the step 5 is finished carries out destressing and locking construction processing.

Laying of welded long rails and welding procedure technique under the above-mentioned large temperature difference, the husky condition of high wind, it is characterized in that: be provided with a plurality of stations on the section of track described in the step 1 nail on line and a plurality of described station is followed successively by from front to back the upper pillow station, turns over the pillow station, stamping die anchoring station, demoulding station, sleeper right station, loose pillow station, cloth rail station, pre-upper fastener station, fastening clip station and check station, and the nail connection job practices to all sections of track in the step 1 is all identical, and wherein the nail of any section of track connection work progress is as follows:

101, upper pillow: adopt the straddle truck be laid in the upper pillow station, with follow closely connection section of track need with plurality of sleepers hang onto side by side follow closely online on, and be transferred to and turn over the pillow station by following closely many described sleepers after online will the scattering;

102, turn over pillow: adopt to be laid in the automatic pillow-turning gantry that turns over the pillow station, translate into one by one the bottom surface up with being transferred to many described sleepers that turn over the pillow station, simultaneously concrete lumps and earth in the nail hole in the described sleeper are removed; Afterwards, online many after turning over pillow described sleepers are transferred to stamping die anchoring station by following closely;

103, stamping die anchoring: be laid in the anchoring template of stamping die anchoring station according to conventional stamping die anchoring construction method and employing, many described sleepers delivering to stamping die anchoring station are carried out respectively the stamping die anchoring; And when carrying out the stamping die anchoring, the sulphur-bonded mortar that adopts conventional stamping die anchoring to use carries out anchoring to the screw spike that pours in the nail hole; Afterwards, online many described sleepers after the stamping die anchoring are transferred to demoulding station by following closely;

104, the demoulding: according to conventional release method, many described sleepers delivering to demoulding station are carried out respectively the demoulding; Afterwards, onlinely many after the demoulding described sleepers are transferred to sleeper right station by following closely;

105, sleeper rights: adopt to be laid in sleeper and to right turning over the pillow device or manually living the method that the sleeper middle part rights with iron fork fork of station, many described sleepers that right station to delivering to sleeper right respectively; Afterwards, online many after sleeper rights described sleepers are transferred to loose pillow station by following closely;

106, loose pillow: according to the sleeper pitch of design in advance, to many described sleepers that the are transferred to loose pillow station pillow that falls apart; Afterwards, online many described sleepers behind loose pillow are transferred to cloth rail station by following closely;

107, cloth rail: adopt the straddle truck that is laid in cloth rail station, two described tool tracks in the step 1 are lifted respectively on many described sleepers behind the loose pillow tool track behind the first dress of formation; Afterwards, be transferred to pre-upper fastener station by the tool track of following closely after online will just the dress;

108, pre-upper fastener: artificial fastener for installing on the tool track behind the first dress, and be transferred to the fastening clip station by following closely the online tool track that fastener will be housed;

109, fastening clip: artificially by electric wrench the fastener of installing in the step 108 is carried out fasteningly, and obtain the section of track finished product that the nail connection is finished; Afterwards, online described section of track finished product is transferred to the inspection station by following closely;

110, check: according to the inspection method of conventional section of track end product quality, the quality of the finished product of the section of track described in the step 109 is checked.

Laying of welded long rails and welding procedure technique under the above-mentioned large temperature difference, the husky condition of high wind, it is characterized in that: when the many described sleepers to being transferred to loose pillow station described in the step 106 fall apart pillow, adopt the loose pillow device that being laid in loose pillow station or the loose jigger pillow that falls apart of resting the head on.

Laying of welded long rails and welding procedure technique under the above-mentioned large temperature difference, the husky condition of high wind, it is characterized in that: described loose pillow jigger comprises all identical loose pillow cars of two array structures and size, the corresponding walking rails that moves forward and backward for the described loose pillow car of two row that is provided with respectively on the described crane of two rows; Described loose pillow car comprises all identical sliding trolleys of a plurality of structures and size, and connect by connecting iron chains between adjacent two sliding trolleys, the quantity of included sliding trolley is identical with the quantity of many described sleepers in the step 1 in the described loose pillow car of every row, the described loose pillow car of two row is the bilateral symmetry laying and the two vertically moves synchronously, and the described loose pillow car of two row forms the loose pillow device that many described sleepers are evenly fallen apart synchronously and rest the head on; Described sliding trolley comprises the horizontal supporting plate that described sleeper is supported and is installed in the walking mechanism of described horizontal supporting plate bottom, the structure of described walking mechanism is corresponding with the structure of walking rails, and D=d+L, D is the sleeper pitch that designs in advance in the formula, L is for connecting the length of iron chains, and d is the longitudinal length of horizontal supporting plate.

Laying of welded long rails and welding procedure technique under the above-mentioned large temperature difference, the husky condition of high wind, it is characterized in that: the nail described in the step 1 is online to be comprised by two rows and is crane group that the crane of parallel laying forms and arranges the conveying carrier that vertically moves back and forth between the described crane two, and described crane group and described conveying carrier are used; When adopting loose pillow jigger that many described sleepers that are transferred to loose pillow station are fallen apart pillow in the step 106, its loose pillow process is as follows:

1061, hang sleeper: many after sleeper rights described sleepers are hung respectively to the described loose pillow car of two row by the straddle truck that is laid in loose pillow station, and so that the left and right end portions of every sleepers carry on a shoulder pole respectively be placed on position in the described loose pillow car of two row over against two sliding trolleys on, and so that every sleepers all is placed on the middle part of two described sliding trolleys; In this step, when hanging respectively many described sleepers to the described loose pillow car of two row, the connection iron chains of two row in the described loose pillow car all are in relaxed state; And with many described sleeper hang respectively to two row described loose pillow car before, with two row described crane rise to the extreme higher position;

1062, bindiny mechanism installs: bindiny mechanism is installed respectively in front end or the rear end of the described loose pillow car of two row, and by bindiny mechanism the described loose pillow car of two row is separately fixed on the described conveying carrier; Before described bindiny mechanism installed, first corresponding front side or the rear side that described conveying carrier is moved to the described loose pillow car of two row;

1063, even loose pillow: start that described conveying carrier vertically moves forward or vertically mobile backward, and described conveying carrier vertically moves forward or vertically mobile backward the time, it is mobile forward or backward synchronously to drag the described loose pillow car of two row, until the connection iron chains in the described loose pillow car of two row is all pulled open and is in straightened condition, then finish the loose pillow operation of many described sleepers;

1064, sleeper displacement: described conveying carrier is moved to the described sleeper of many behind loose pillow below in the step 1063, afterwards to the adjustment that descends synchronously of the described crane of two rows, many described sleepers until will fall apart behind the pillow all steadily are placed on the described conveying carrier, and the many described sleepers that will fall apart after resting the head on by described conveying carrier subsequently are transferred to cloth rail station.

Laying of welded long rails and welding procedure technique under the above-mentioned large temperature difference, the husky condition of high wind, it is characterized in that: described walking rails comprises two side by side equal identical solid steel pipes of laying and structure and size, and two solid steel pipes are parallel to be laid in crane top and two described solid steel pipes are respectively solid steel pipe one and solid steel pipe two; Described walking mechanism comprises all identical road wheels of three structures and size, and described horizontal supporting plate bottom correspondence is provided with three wheel seats, and described road wheel all is installed on the wheel seat by wheel shaft; Three described road wheels comprise that a road wheel one of walking along described solid steel pipe delegation and two are all along the road wheels two of described solid steel pipe two walkings, it is corresponding with the installation position of described solid steel pipe one that described road wheel one is laid in a middle side part and its installation position of horizontal supporting plate, opposite side and the installation position of the two that two described road wheels two one in front and one in back are laid in horizontal supporting plate are all corresponding with the installation position of described solid steel pipe two, and two described road wheel two symmetries are laid in the both sides, front and back of described road wheel one.

Laying of welded long rails and welding procedure technique under the above-mentioned large temperature difference, the husky condition of high wind, it is characterized in that: described horizontal supporting plate is rectangular steel plates, and the longitudinal length of described rectangular steel plates is identical with the width of described sleeper.

Laying of welded long rails and welding procedure technique under the above-mentioned large temperature difference, the husky condition of high wind, it is characterized in that: the casing described in the step 5013 is the iron sheet case, and described insulation layer is asbestos fire prevention layer of cloth.

Laying of welded long rails and welding procedure technique under the above-mentioned large temperature difference, the husky condition of high wind, it is characterized in that: the described tool track of step 1 is that length is the short rail of 12.5m or 25m; Long rail described in the step 4 is that length is the long rail of 100m～500m.

Laying of welded long rails and welding procedure technique under the husky condition of the above-mentioned large temperature difference, high wind is characterized in that: when in the step 502 two described long rail being carried out the welding of plasticity air pressure, its welding process may further comprise the steps:

5021, the heater heating location is adjusted: before the igniting, heating location to heater in the gas pressure welding trailer is adjusted, and so that the fire hole plane of described heater is parallel with the welding ends of welded spreading rail, simultaneously so that between described heater fire hole end face and the welded spreading rail lateral profile face apart from being 25mm ± 1mm;

5022, pre-top: the running parameter to the fluid power system that is used with press-connection machine described in the step 5012 is adjusted, and is the pre-jacking force of 18Mpa～20Mpa so that apply size by described press-connection machine at the rail end of welded spreading rail;

5023, igniting welding: after feeding oxygen and acetylene 3s～4s in the described heater, described heater is lighted a fire; After the igniting, swing described heater the welding position between two described long rail is heated;

5024, step-down and pressurize: when the welding ends to welded spreading rail to be heated produces plastic strain, running parameter by fluid power system described in the set-up procedure 5022, the pre-jacking force that described press-connection machine is applied to welded spreading steel rail end is down to 8Mpa～10Mpa and is continued pressurize, by described heater the welding position between two described long rail is continued to heat simultaneously;

5025, pressurization upset: be 1.5mm when a plurality of areas appear in the flange of rail angle upper surface of finding welded spreading rail ²～3mm ²Welding pool the time, running parameter by fluid power system described in the set-up procedure 5022, the pre-jacking force that described press-connection machine is applied to welded spreading steel rail end rises to 32Mpa～35Mpa and continues pressurize, with upset that two soldered described long rail are pressurizeed, and the pressurization upset time is 50s ± 15s;

5026, push away protruding: after upset finishes, extinguish heater and adopt and push away that salient mounting is put and according to the protruding method that pushes away in the conventional gas pressure welding of rail, will weld discharge-amount and push away and remove;

5027, weld seam normalizing: when treating that the weld seam temperature that forms is down to 400 ℃～500 ℃ between two described long rail, adopt described heater that described weld seam is carried out normalized treatment, and the initial temperature of normalized treatment is 400 ℃～500 ℃, and finishing temperature is 850 ℃～900 ℃;

5028, postwelding polishing and aligning: utilize profiling sander to be polished respectively in end face and the side of two described long rail junctions, and adopt rail bender to align described weld seam;

When in step 5023 and the step 5024 welding position between two described long rail being heated, the oscillating quantity of described heater is 15mm～20mm and its hunting frequency is 60 beats/mins ± 10 beats/mins; When pressurizeing upset in the step 5025, the oscillating quantity of described heater is that 30mm ± 5mm and its hunting frequency are 80 beats/mins ± 10 beats/mins.

The present invention compared with prior art has the following advantages:

1, simple, the easy construction of processing step and input cost are low, and construction quality is easily controlled.

2, the technological design of section of track nail connection is reasonable and adopt reciprocating type section of track nail on line to realize mechanized continuous productive process, labour intensity is little, construction period end and efficiency of construction are high, construction effect is good, adopt and first the required a plurality of sections of track of constructing are followed closely connection, to follow closely again a plurality of sections of track of finishing of connection and carry out scene laying, adopt again afterwards long rail to change the laying process of shop, greatly simplified the on-the-spot laying construction process of tool track, only need lay according to the section of track that design drawing is finished a plurality of nails connection during on-the-spot the laying and get final product, and laying precision easily controls, the installation site that only need guarantee each section of track, and need not the installation position of each sleepers and Ge Gen tool track is carried out duplicate measurements, thereby significantly alleviated the site work amount.

3, realized the mechanized track laying operation, long rail uses the equipment such as DPK32 type track-laying machine, movable small gas pressure welder and long rail transport vehicle to carry out laying, welding, destressing and the locking of gapless track after being transported to frame base, shop from rail welding plant.

4, adopt anti-anchor mode in the section of track nail connection process, not only anchoring is convenient and anchoring effect is very good.

5, the loose pillow jigger reasonable in design that adopts, processing and fabricating and installation are laid easy and the processing and fabricating cost is low, use simultaneously easy and simple to handle, only need plurality of sleepers is hung respectively to the loose pillow of two row car, and so that the left and right end portions of every sleepers carry on a shoulder pole respectively be placed on position in the loose pillow of the two row car over against two sliding trolleys on get final product, the first two columns of the loose pillow connection iron chains of resting the head in the car that falls apart all is in relaxed state; In actual when pillow of faling apart, it is mobile forward or backward synchronously only to need to drive the loose pillow of two row car by conveying carrier, and corresponding connection iron chains in the loose pillow of the two row car is pulled open to straightened condition by relaxed state, just automatically finishing evenly loose pillow operation.Simultaneously, loose pillow jigger applied widely during actual the use, only needs the sleeper pitch D according in advance design, the length L that connects iron chains to be connected longitudinal length d with horizontal supporting plate the length that connects iron chains adjusted, can finish the loose pillow operation of different sleeper pitches, adjust very easy.

6, adopt loose pillow jigger to finish evenly loose pillow operation after, the sleeper displacement is convenient, only needs the landing frame is reduced, and just the plurality of sleepers behind the pillow that falls apart steadily can be moved on the conveying carrier.

7, adopt that the dust-proof insulating box structure is reasonable in design, processing and fabricating and install lay convenient and input cost low, constructing operation is easy simultaneously, result of use good, can solve effectively that the temperature difference is large, the track welding problem under the husky condition of high wind, and welding quality is high, and whole welding process is not affected by the external environment.Simultaneously, adopt the destressing and the locking operation that are fit to construction area, the construction quality that gapless track is finished in final construction is high.

8, remarkable in economical benefits, adopt mechanized construction, standardized work, can not only the reduction of erection time and save production cost, also will be for company create larger market efficiency and economic benefit, thereby the present invention has short, the construction characteristic such as security risk is little, construction and the mutual interference of operation phase are less of effective engineering time.

In sum, the present invention is reasonable in design, construction sequence is simple, realization is convenient and short construction period, construction quality high, can solve effectively that the long construction period, the efficiency of construction that exist in the laying of welded long rails work progress under the existing large temperature difference, the husky condition of high wind are low, construction effect is relatively poor, welding quality is difficult to the multiple practical problems such as control.

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

Description of drawings

Fig. 1 is construction technology process block diagram of the present invention.

Fig. 2 is the use state reference map of the present invention when loose pillow jigger hangs sleeper.

Fig. 3 be the present invention's loose pillow car and walking rails the installation position schematic diagram.

Fig. 4 is the polycrystalline substance schematic diagram of sliding trolley of the present invention.

Description of reference numerals:

The 1-walking rails; The 2-sliding trolley; The 2-1-horizontal supporting plate;

The 2-2-road wheel; The 2-3-wheel seat; The 3-crane;

4-connects iron chains; 5-concrete pillow; The 6-chain link.

The specific embodiment

Laying of welded long rails and welding procedure technique under a kind of large temperature difference as shown in Figure 1, the husky condition of high wind may further comprise the steps:

Section of track nail on line and section of track nail connection job practices are routinely adopted in the construction of step 1, section of track nail connection, and working a plurality of sections of track are followed closely the connection construction continuously; The described section of track comprises plurality of sleepers and two tool tracks that are installed on the many described sleepers.

Step 2, section of track handling: in the section of track nail connection work progress, adopt hanging device and transport vehicle in the step 1, the section of track of finishing constructing is transported to the scene of laying in batches.

Step 3, section of track laying construction: adopt track-laying machine and according to the conventional laying method of the section of track, lay the on-the-spot section of track and lay being transported to, and obtain the track that is laid to by the section of track.

Step 4, laying of welded long rails construction, its laying construction process is as follows:

401, long rail displacement: according to the paving location that designs in advance, and adopt shift equipment to be transported in advance and lay many on-the-spot long rail, move to respectively in the step 3 and laid on the sleeper of finishing track.

402, switch tracks: according to the method that the switches tracks job practices of routine, adopt the long rail described in the step 401 that the tool track in the section of track described in the step 3 is changed the shop piecemeal.

Step 5, long rail field welding construction: adopt the gas pressure welding trailer and according to plasticity air pressure Fundamentals of Welding, to change in the step 4 spread after before and after two adjacent described long rail weld, its welding process is as follows:

501, prepare before the weldering, its preparation mainly may further comprise the steps:

5011, the rail end is processed: adopt grinding apparatus, the rail end of two soldered long rail is carried out respectively grinding process.

5012, press-connection machine location: adopt the rail welding press-connection machine, the rail end of two described long rail is fixedly clamped, and so that the flange of rail of two described long rail is concordant.

5013, dust-proof insulating case cover dress: in the joint outside of two described long rail, cover fills a dust-proof insulating case, and described dust-proof insulating case is the outside casing that is laid with insulation layer.

502, plasticity air pressure welding: in described dust-proof insulating case, and according to routine is carried out the welding of plasticity air pressure to rail welding method two described long rail are carried out the welding of plasticity air pressure, and obtain the gapless track that construction is finished.

Step 6, destressing and locking construction: according to conventional gapless track destressing and locking construction technology, the described gapless track that construction in the step 5 is finished carries out destressing and locking construction processing.

Thereby in the actual use procedure, the present invention adopts and first the required a plurality of sections of track of constructing to be followed closely connection, will follow closely a plurality of sections of track that connection finishes again and carry out scene and lay, and adopts afterwards long rail to change the shop again, and its laying process and routine " method switches tracks " have essential distinction.In the conventional method that the switches tracks work progress, directly at the construction field (site) tool track is laid, and the nail connection that does not carry out first the section of track is constructed, thereby need spend a large amount of manual operations during practice of construction, not only labour intensity is large, the construction period is long, and efficiency of construction is low, complicated construction technique, construction effect are relatively poor.And when adopting the present invention to lay, since adopt first early stage section of track nail on line to construction need with a plurality of sections of track follow closely connection, thereby greatly simplified the on-the-spot laying construction process of tool track, only need lay according to the section of track that design drawing is finished a plurality of nails connection during on-the-spot the laying and get final product, and laying precision easily controls, only need guarantee the installation site of each section of track, and need not the installation position of each sleepers and Ge Gen tool track is carried out duplicate measurements, thereby significantly alleviate the site work amount.Simultaneously, because the section of track is followed closely when connection, adopt mechanical section of track nail on line to finish, not only nail connection efficient and nail connection precision can effectively be guaranteed, and labour intensity significantly reduce, time saving and energy saving, really realized mechanized operation.The husky condition of the large temperature difference of indication of the present invention, high wind is the execution conditions when day and night temperature reaches degree more than 40, high wind sand weather more (wind-force is mostly more than 4 grades) and the abominable construction area of natural environment and constructs, above-mentioned construction area such as Inner Mongolia etc.

Actually follow closely connection, the described tool track of step 1 (i.e. nail connection finish section of track finished product) is the short rail of 12.5m or 25m for length; Long rail described in the step 4 is that length is the long rail of 100m～500m.In the present embodiment, the length of described long rail is 500m.Correspondingly, the present invention can effectively be applicable to the laying of welded long rails construction that length is 100～500m.

In the present embodiment, be provided with a plurality of stations on the section of track described in the step 1 nail on line and a plurality of described station is followed successively by from front to back the upper pillow station, turns over the pillow station, stamping die anchoring station, demoulding station, sleeper right station, loose pillow station, cloth rail station, pre-upper fastener station, fastening clip station and check station, and the nail connection job practices to all sections of track in the step 1 is all identical, and wherein the nail of any section of track connection work progress is as follows:

101, upper pillow: adopt the straddle truck be laid in the upper pillow station, with follow closely connection section of track need with plurality of sleepers hang onto side by side follow closely online on, and be transferred to and turn over the pillow station by following closely many described sleepers after online will the scattering.In the present embodiment, described sleeper is concrete pillow 5.

102, turn over pillow: adopt to be laid in the automatic pillow-turning gantry that turns over the pillow station, translate into one by one the bottom surface up with being transferred to many described sleepers that turn over the pillow station, simultaneously concrete lumps and earth in the nail hole in the described sleeper are removed; Afterwards, online many after turning over pillow described sleepers are transferred to stamping die anchoring station by following closely.

103, stamping die anchoring: be laid in the anchoring template of stamping die anchoring station according to conventional stamping die anchoring construction method and employing, many described sleepers delivering to stamping die anchoring station are carried out respectively the stamping die anchoring; And when carrying out the stamping die anchoring, the sulphur-bonded mortar that adopts conventional stamping die anchoring to use carries out anchoring to the screw spike that pours in the nail hole; Afterwards, online many described sleepers after the stamping die anchoring are transferred to demoulding station by following closely.

104, the demoulding: according to conventional release method, many described sleepers delivering to demoulding station are carried out respectively the demoulding; Afterwards, onlinely many after the demoulding described sleepers are transferred to sleeper right station by following closely.

105, sleeper rights: adopt to be laid in sleeper and to right turning over the pillow device or manually living the method that the sleeper middle part rights with iron fork fork of station, many described sleepers that right station to delivering to sleeper right respectively; Afterwards, online many after sleeper rights described sleepers are transferred to loose pillow station by following closely.

106, loose pillow: according to the sleeper pitch of design in advance, to many described sleepers that the are transferred to loose pillow station pillow that falls apart; Afterwards, online many described sleepers behind loose pillow are transferred to cloth rail station by following closely.

107, cloth rail: adopt the straddle truck that is laid in cloth rail station, two described tool tracks in the step 1 are lifted respectively on many described sleepers behind the loose pillow tool track behind the first dress of formation; Afterwards, be transferred to pre-upper fastener station by the tool track of following closely after online will just the dress.

108, pre-upper fastener: artificial fastener for installing on the tool track behind the first dress, and be transferred to the fastening clip station by following closely the online tool track that fastener will be housed.

109, fastening clip: artificially by electric wrench the fastener of installing in the step 108 is carried out fasteningly, and obtain the section of track finished product that the nail connection is finished; Afterwards, online described section of track finished product is transferred to the inspection station by following closely.

110, check: according to the inspection method of conventional section of track end product quality, the quality of the finished product of the section of track described in the step 109 is checked.

In the present embodiment, when in the step 106 many described sleepers that are transferred to loose pillow station fall apart pillow, adopt being laid in the loose loose pillow jigger of the resting the head on station pillow that falls apart.The actual nail in the connection process, also can adopt the loose pillow device that the being laid in loose pillow station pillow that falls apart, and when adopting loose pillow device to fall apart the pillow operation, its the loose pillow method all method of operating with conventional loose pillow device is identical, and adopting loose pillow device to fall apart when resting the head on operation, used nail is online to be that existing conventional nail is online.

In the present embodiment, adopt when loose pillow jigger is actual to carry out the operation of section of track nail connection, the nail on-line composition that adopts only is with existing section of track nail on-line composition difference: on the described crane 3 of two rows respectively corresponding being provided with for two be listed as the walking rails 1 that described loose pillow car moves forward and backward, the remainder structure is all online identical with the conventional nail that uses with operating principle, described nail is online to be comprised by two rows and is crane group that the crane 3 of parallel laying forms and arranges the conveying carrier that vertically moves back and forth between the described crane 3 two, and described crane group and described conveying carrier are used.

In conjunction with Fig. 2, Fig. 3 and Fig. 4, described loose pillow jigger comprises all identical loose pillow cars of two array structures and size, the corresponding walking rails 1 that moves forward and backward for the described loose pillow car of two row that is provided with respectively on the described crane 3 of two rows.Described loose pillow car comprises all identical sliding trolleys 2 of a plurality of structures and size, and connect by connecting iron chains 4 between adjacent two sliding trolleys 2, the quantity of included sliding trolley 2 identical with the quantity of many described sleepers in the step 1 (and the loose pillow of two row car can be finished the loose pillow operation of many described sleepers synchronously) in the described loose pillow car of every row, the described loose pillow car of two row is the bilateral symmetry laying and the two vertically moves synchronously, and the described loose pillow car of two row forms the loose pillow device that many described sleepers are evenly fallen apart synchronously and rest the head on.Described sliding trolley 2 comprises the horizontal supporting plate 2-1 that described sleeper is supported and is installed in the walking mechanism of described horizontal supporting plate 2-1 bottom, the structure of described walking mechanism is corresponding with the structure of walking rails 1, and D=d+L, D is the sleeper pitch that designs in advance in the formula, L is for connecting the length of iron chains 4, and d is the longitudinal length of horizontal supporting plate 2-1.Thereby, when pulling open, described loose pillow car can automatically control sleeper pitch.

In the actual use procedure, the row of two during described nail is online crane 3 can be provided with the crane 3 that can only carry out oscilaltion and can not vertically move, and also can arrange in described crane 3 bottoms simultaneously for its rail that moves forward and backward.The described crane 3 of two rows can only in the setting of loose pillow station, also can be followed closely on line along the section of track and carry out all fronts laying.

Actual faling apart when resting the head on, when adopting loose pillow jigger to fall apart pillow to being transferred to loose many described sleepers resting the head on station in the step 106, its loose pillow process is as follows:

1061, hang sleeper: many after sleeper rights described sleepers are hung respectively to the described loose pillow car of two row by the straddle truck that is laid in loose pillow station, and so that the left and right end portions of every sleepers carry on a shoulder pole respectively be placed on position in the described loose pillow car of two row over against two sliding trolleys 2 on, and so that every sleepers all is placed on the middle part of two described sliding trolleys 2.In this step, when hanging respectively many described sleepers to the described loose pillow car of two row, the connection iron chains 4 of two row in the described loose pillow car all are in relaxed state.And with many described sleeper hang respectively to two row described loose pillow car before, with two row described crane 3 rise to the extreme higher position.

1062, bindiny mechanism installs: bindiny mechanism is installed respectively in front end or the rear end of the described loose pillow car of two row, and by bindiny mechanism's (being specially temporary fastening device) the described loose pillow car of two row is separately fixed on the described conveying carrier; Before described bindiny mechanism installed, first corresponding front side or the rear side that described conveying carrier is moved to the described loose pillow car of two row.

1063, even loose pillow: start that described conveying carrier vertically moves forward or vertically mobile backward, and described conveying carrier vertically moves forward or vertically mobile backward the time, it is mobile forward or backward synchronously to drag the described loose pillow car of two row, until the connection iron chains 4 in the described loose pillow car of two row is all pulled open and is in straightened condition, then finish the loose pillow operation of many described sleepers.

1064, sleeper displacement: described conveying carrier is moved to the described sleeper of many behind loose pillow below in the step 1063, afterwards to the adjustment that descends synchronously of the described crane 3 of two rows, many described sleepers until will fall apart behind the pillow all steadily are placed on the described conveying carrier, and the many described sleepers that will fall apart after resting the head on by described conveying carrier subsequently are transferred to cloth rail station.

In the present embodiment, before in the step 1062 described bindiny mechanism being installed, first corresponding described conveying carrier is moved to the front side of the described loose pillow car of two row, the front ends with the described loose pillow car of two row are fixed on described conveying carrier by bindiny mechanism again; When evenly faling apart pillow in the step 1063, start that described conveying carrier vertically moves forward and conveying carrier when vertically moving forward, drag the described loose pillow car of two row synchronously forward, until the connection iron chains 4 of two row in the described loose pillow car all pulled open and be in straightened condition; After loose pillow finishes, first described conveying carrier is retreated in the step 1064 to the many described sleeper belows of faling apart after resting the head on, by the described landing frame of downward adjustment many described sleepers all steadily are placed on the described conveying carrier again.

In the present embodiment, described walking rails 1 comprises two side by side equal identical solid steel pipes of laying and structure and size, and two solid steel pipes are parallel to be laid in crane 3 tops and two described solid steel pipes are respectively solid steel pipe one and solid steel pipe two.Described walking mechanism comprises all identical road wheel 2-2 of three structures and size, and described horizontal supporting plate 2-1 bottom correspondence is provided with three wheel seat 2-3, and described road wheel 2-2 all is installed on the wheel seat 2-3 by wheel shaft.Three described road wheel 2-2 comprise that a road wheel one of walking along described solid steel pipe delegation and two are all along the road wheels two of described solid steel pipe two walkings, it is corresponding with the installation position of described solid steel pipe one that described road wheel one is laid in a middle side part and its installation position of horizontal supporting plate 2-1, opposite side and the installation position of the two that two described road wheels two one in front and one in back are laid in horizontal supporting plate 2-1 are all corresponding with the installation position of described solid steel pipe two, and two described road wheel two symmetries are laid in the both sides, front and back of described road wheel one.That is to say that two described road wheels two are laid as line of symmetry carries out symmetry take the central axis of described road wheel one.In the actual use procedure, described walking rails 1 also can adopt the moving track of other type, and the sliding trolley 2 corresponding employings walking mechanism corresponding with described moving track structure.Simultaneously, front and back, described horizontal supporting plate 2-1 bottom two middle side parts are provided with the chain link 6 that connects iron chains 4 for installing, and two middle side parts have the groove of being convenient to install at chain link 6 connection iron chains 4 before and after the horizontal supporting plate 2-1.During actual the use, two described road wheels one are usually located at described crane 3 outsides, and correspondingly described road wheel two is positioned at crane 3 inboards.

In the present embodiment, described horizontal supporting plate 2-1 is rectangular steel plates, and the longitudinal length of described rectangular steel plates is identical with the width of described sleeper.During actual the use, also can be according to actual needs, the size of described rectangular steel plates is adjusted accordingly, but described rectangular steel plates should have the ability that can bear described sleeper.That is to say, two row described loose pillow car comprise a plurality of positions one by one over against sliding trolley 2.

In sum, in the present embodiment, the nail of described section of track connection process is carried out according to following continuous productive process process: adopt in the step 101 straddle truck that is laid in the upper pillow station with the follow closely connection section of track need with plurality of sleepers hang onto side by side follow closely online when upper, the sleeper that specifically adopts straddle truck will transport on the vehicle divides buttress to hang onto on the conveying carrier, and layering cloth is opened.When adopting the gantry crane lifting sleeper, the radical of every hook hanger rail pillow should be controlled at 20～24; Chock between the hafnium pillow layer is concentrated the neat and periodic cleaning of pile, must not throw out without care to leave about.Afterwards, by described conveying carrier many described sleepers are moved to and turn over the pillow station.

Adopt automatic pillow-turning gantry that many described sleepers are translated into the bottom surface up one by one in the step 102, to after following closely concrete lumps in the hole and earth in the described sleeper and removing, by described conveying carrier many described sleepers are moved to stamping die anchoring station simultaneously.

When carrying out the stamping die anchoring in the step 103, adopt fixed form to carry out anti-anchor, specifically first sleeper being set right falls in the template groove, and aligning is followed closely the hole and screw spike is fallen to inject in the nail hole, then pours into the sulphur-bonded mortar that boils; When founding anchorage mortar, by selected match ratio, weigh up the once amount of founding of each material, when pouring first sand into and being heated to 100～120 ℃, pour cement into water and be heated to 130 ℃, add at last sulphur and paraffin, continue to be stirred and heated to 160 ℃, can put into the fireless cooker heat preservation for standby use when molten slurry becomes the sol shape by rare retrogradation, will constantly stir simultaneously and make the unlikely segregation of sand; Used fixed form will in time clean, and makes sleeper rail support groove and fixed form closely connected, with mortar leakage prevention; Screw spike will keep dry and pour in the nail hole; The grouting amount is controlled at the interior railway spike of coverage hole and is not less than 20mm.Afterwards, by described conveying carrier many described sleepers after the stamping die anchoring are transferred to demoulding station.

After carrying out the demoulding in the step 104, be transferred to sleeper by the many described sleepers of described conveying carrier after the demoulding and right station.

Carry out sleeper in the step 105 when righting, manually live the sleeper middle part with iron fork fork sleeper is righted, and mortar unnecessary around support rail groove face and the screw spike is rooted out, cleaning totally.Afterwards, by conveying carrier many after sleeper rights described sleepers are transferred to loose pillow station.

Actual faling apart when resting the head on, the sleeper pitch of indicating according to rail joint table (namely in advance the sleeper pitch D of design), and according to step 1061 to the described method of step 1064, to the plurality of sleepers that the moves to loose pillow station pillow that fall apart, and the many described sleepers that will fall apart after resting the head on by described conveying carrier are transferred to cloth rail station.

Step 107, step 108, step 109 and step 110 are all carried out according to existing nail connection technique.Carry out before the cloth rail in the step 107, in advance tool track is carried out dipping and identified at the rail head place, when the straddle truck that employing is laid in cloth rail station carries out actual hanging, press length and the dislocation amount of the rail joint table tool track of marking, with need with tool track pairing hang in the sleeper rail support groove, measure disease with square chi and put joint well, draw sleeper pitch seal and tie respacing, use afterwards the white oil varnish stain on the inboard web of the rail of tool track; Rail joint numbering sequentially is marked on the inboard web of the rail of tool track of thigh on direction of advance the 7th sleepers of laying a railway track by rail joint table.When need hung curve shortening rail, the direction of advance of laying a railway track of at first indicating with rail joint table was determined the curve trend, tells up and down thigh, and joint is put just should be at direction of advance one end of laying a railway track; The curve square joint, the above thigh of its joint dislocation amount is as the criterion.After the cloth rail finishes in the step 107, form the tool track behind the first dress, and the tool track after will just filling by conveying carrier is transferred to pre-upper fastener station.

When carrying out pre-upper fastener construction in the step 108, the fastener type and the number that indicate by rail joint table are configured, and carry out bulk storage and installation successively, and behind the band upper cap nut, hand is twisted 3 more than the screw thread.Before the fastener for installing, with the railway rail pad levelling, then cooperate with crowfoot first, with fastener low water and installation code, and the fastener at rail joint place manually tightens.After fastener was installed, the tool track that fastener will be housed by conveying carrier was transferred to the fastening clip station.

After butt joint and sleeper are accurately located, confirm that railway rail pad and fastener lay correctly in the step 109, tighten whole nuts with electric wrench again, just obtain the section of track finished product (being that the finished product rail saves) that the nail connection is finished.Afterwards, by conveying carrier described section of track finished product is transferred to the inspection station.

In the step 110 assembly unit of rail joint good after, quality inspection personnel carries out comprehensively careful inspection to the rail joint, and defective rail joint is rectified and improved, and simultaneously the two ends rail head is carried out oiling, and joins and put splice bar and bolt, check and correction rail joint is numbered.After confirming that quality meets standard, Fang Zhun appears on the scene.After quality examination is qualified, adopts to be laid in the straddle truck rail joint that assembly unit is good that checks station and to get on the bus (or hanging in rail joint storage pad) by the order lifting of laying a railway track, and the vehicle that fills enough rail joints is reinforced by pertinent regulations.Simultaneously, when playing the hanger rail joint, should make an accurate selection of suspension centre, to reduce amount of deflection and the swing of rail joint.

To sum up, according to step 101 to the nail linked method described in the step 110, finish a joint finished product rail joint after, back and forth the continuous productive process nail connection that carries out follow-up rail joint is produced successively.

When in the step 2 section of track being carried out handling, with the section of track finished product of acceptance(check) in the step 1, according to the sequence list of laying a railway track, install to the railway flat bed transport vehicle and be transported to and spread frame the place ahead, every train number can load and transport section of track 1.5km.

When adopting track-laying machine that the section of track is carried out laying construction in the step 3, adopt DPK32 type track-laying machine to lay, and its process of deployment is as follows:

301, the upside-down mounting section of track:

At first, utilize in advance at the vertical a plurality of upside-down mounting portal frames of not far place, track-laying machine main frame back group, the section of track that nail connection is good by the upside-down mounting of ordinary flat car to the transport vehicle that roller is housed, deliver to voluntarily the main frame rear portion of track-laying machine by the transport vehicle carrying section of track, and the section of track is directly supplied with the main frame of track-laying machine.

The job position of described upside-down mounting portal frame should be chosen in line slope and be not more than 10 ‰ location, otherwise the bottom will be leveled up, and the roadbed bearing capacity should be not less than 0.15MPa, and same upside-down mounting portal frame both sides should keep level, and the maximum discrepancy in elevation is not more than 10mm.Simultaneously, the installation position of described upside-down mounting portal frame should be chosen in from the position of track-laying machine main frame close to, generally is not more than 500m.The long sleeper of six roots of sensation 2.5m is respectively filled up in the bottom of each upside-down mounting portal frame.When upside-down mounting length was the section of track of 25m, the centre distance of two upside-down mounting portal frames was 13.8m, and error is ± 10mm; Upside-down mounting portal frame center and laying-out centre deviation should be less than 20mm.

After upside-down mounting portal frame group was stood well, the flat car that the section of track will be housed with locomotive pushed under the upside-down mounting portal frame, made section of track hoisting point position aim at suspension hook.Afterwards, unclamp rope hauling device, make suspension hook aim at space between the section of track two pillows, put down suspension hook, the section of track group that is formed by the many sections of track that fills on the flat car of slinging, and flat car pulled out the upside-down mounting portal frame.Simultaneously, the transport vehicle that roller is housed sails under the upside-down mounting portal frame that hangs the section of track, puts down afterwards the section of track group that lifts on the inverted gantry crane and makes it to be put on the transport vehicle that roller is housed, and extracts suspension hook, handles rope hauling device lifting rope suspension hook is moved outward.At last, the transport vehicle that roller is housed rolls the upside-down mounting portal frame away from, finishes the upside-down mounting of one group of section of track.

302, section of track group is drawn main frame into track-laying machine:

At first, remove the wire rope of tying up the section of track, hang up properly pulley wire rope, then with the hoisting equipment on the track-laying machine, that the whole group of section of track (6 layers of new II type concrete crossties, 5 layers of III type concrete crossties) is dilatory to the ventral of laying a railway track.

303, track-laying machine contraposition:

Track-laying machine is braked the contraposition of stopping during voluntarily to the 3rd sleepers of the row's of laying a railway track front end.Laying machine is advisable with＜5km/h from line speed, and in the end speed should be controlled at 3km/h during 5m～6m, and Che Qianying has the special messenger to put the wind lookout, grasps brake.

304, the handling section of track:

Start and to walk to walk to arm Overhead rail cart foremost from the track-laying machine rear end, make Overhead rail cart retreat to the hoisting point position of the section of track, fall suspension hook and hang up properly the section of track; Then, with the section of track hang high apart from below during section of track 0.05m～0.20m, start again dolly and move to the horn forefront.The section of track hangs delivers to horn foremost the time, and the operating personnel should steadily send the section of track.When section of track rear end exceeds when laying a railway track the front-seat 10mm left and right sides, can begin the section of track that falls.

305, section of track contraposition, the row of laying a railway track falls:

Overhead rail cart stops after advancing to the precalculated position, handles the section of track and steadily falls, and when the section of track dropped to overhead one meter, the both sides personnel should buttress section of track landing simultaneously.3 in Curve Segment, because the arm front end has side-play amount when laying a railway track, the both sides personnel should note simultaneously, the section of track are advanced the centering center line to the inner side of curve.When the section of track drop to from the about 30cm of quarrel face～40cm, the both sides personnel should hold the section of track, the centering center line, at this moment should make section of track front end suspend landing, continue to fall in the rear end, and with the front end contraposition of the row of laying a railway track on splice bar, contraposition is the key of controlling the speed of laying a railway track, generally account for about half that spreads a joint section of track total time, so necessarily conscientiously operation during contraposition avoids delay.

In addition, in order to improve the speed of the row of laying a railway track, joint for track panel can be gone up first two clamping plate bolts, with the activity duration before the shortening car, improves the row's of laying a railway track speed.Contraposition simultaneously, by the requirement of reserved rail gap value, the rail when laying a railway track is condition softheartedly, inserts corresponding rail gap sheet.Can make section of track front end align line midline by the yaw facility behind the splice bar in the contraposition of rear end, be aided with in case of necessity manually, with setting right about crowbar or trackshifter, so that the section of track guarantees required form, align with the ground center line, the section of track then hurtles down.

306, Overhead rail cart return:

After this group section of track dropping place, extract rapidly hook, be raised on other sections of track in the track-laying machine, and Overhead rail cart is return the ventral precalculated position, prepare again lifting.

307, next group section of track of connecting joint and hanging bed:

Track-laying machine advances again, sails into newly in the row of laying a railway track, and again contraposition continues to lay next group section of track, and repeats above operation.After a train section of track has been laid, with locomotive empty wagons is retracted station, the place ahead immediately, and in time beam back the base, prepare rail row transport work.Simultaneously, another row rail row transport flatcar that is parked in station, the place ahead is delivered to frame the place ahead, shop and continued operation.

308, fill the clamping plate bolt:

In order to improve the speed of the row of laying a railway track, only go up two clamping plate bolts when laying the section of track or use the joint for track panel quick connector.After track-laying train passes through, should carry out rail joint connection work.

309, slightly dial circuit, guarantee the carrying out of track laying:

In the track laying process, be the front end of the new row of laying a railway track with the suitable bed hedgehopping of ballast aggregate, to be forced down by the track-laying machine front-wheel preventing, joint connects difficulty when causing the follow-up section of track to lay.

Along with advancing of track-laying machine, organize members of a squad's power slightly to dial circuit, make curve visual smoother, straight line is honest, in order to avoid follow-up vehicle slides down, affects progress.

310, the laying of station track:

Can the laying of the main track section of track continuously be carried out, and depends on the section of track and be transported to continuously the scene of laying.But, for guaranteeing the long distance travel of track string train, enough station tracks must be arranged for allowing train.Therefore, when keeping main track successively to lay, must promptly arrange the laying of track switch and station track.In time lay station track, also help and offer new website, the as far as possible reach of section of track car, to shorten the base to the distance between the scene, accelerate exchange and the turnover of empty and load, can also exempt that the upside-down mounting station being set.

The laying of station track takes manually to overlay track switch, then directly lays station track after main track arrives.Station track is laid and is utilized the gap of setting a roof beam in place to use formal track-laying machine to lay, and also can adopt Bridge Erector to carry out the laying of station track.

311, round-off work:

The circuit that sets right, tie respacing is gone here and there ballast aggregate under the pillow at real rail support groove place, eliminates surpassing in reverse height and twist irregularity.Emphasis is strengthened maintenance to weak parts such as bridge floor, track switch and closure mouthful places, to guarantee the raising of engineering train security of operation and the engineering train speed of service.

312, quality examination:

The new circuit that spreads is checked the row's of laying a railway track quality by the special messenger through after tentatively keeping in repair comprehensively.If every kilometer rail gap average transfinites, should search reason and in next class adjustment.The same day should be with rail section number and the actual terminal point mileage of laying of laying at last when knocking off, and report spreads the frame base.

When in the step 401 long rail being shifted, all upper strata tracks are formed yaws to N17 type flatcar side, with lower floor's interval iron Rotate 180 °, make buting iron down simultaneously, prevent that long rail from smashing interval iron when falling.Shipment first floor long rail guarantees that every long rail all drops on the lattice sky of corresponding interval iron, installs behind the long rail lower floor's interval iron Rotate 180 °, makes buting iron up.Simultaneously during Transport of Long Rail, should avoid stopping in emergency, to prevent long rail inertia impact damage transport vehicle support as far as possible.

Adopt the long rail described in the step 401 that the tool track in the section of track described in the step 3 is changed the shop piecemeal in the step 402, and when long rail laid, mainly may further comprise the steps:

The first step, long rail transporting train and minute rail are pushed car and transition hangs together along sloping car, push put in place (the front-wheel center line of roller trolley is apart from having completed the about 350mm of rail end) together with roller trolley, and stop, brake, boots forge iron;

Second step, unclamp to draw on the rail fastening down car long rail locking device, simultaneously with the rotation of all interval iron down;

The 3rd step, will long rail transporting train in safety door on the first bus open (need shut safety door behind dilatory the end), minute rail device lateral is adjusted to the position corresponding with the dilatory long rail of need;

To proper height, such as dilatory upper strata rail, the roller height of coming from the transport vehicle direction should reduce gradually along the lifting cylinder on the sloping car for the 4th step, adjusting minute rail propelling movement car and transition, makes the smooth-going reduction of long rail energy enter a minute rail device;

The 5th step, with behind the steel wire penetrating guide car pusher on the winding plant and minute rail drawing strickle guide, the front end of a pair of long rail to be spread has been unclamped in clamping, urgent wedge gear;

The 6th step, the order of laying a railway track: rub by preventing from being drawn long rail and not being stowed between the long rail, and be the convenient lock rail device of removing, lay a railway track order for first up and then down, every layer of rail specifically laying sequentially is from outside to inside (for 12 long rail that are numbered from left to right 1 to 12, its dilatory order is 1 and 12,2 and 11,3 and 10,4 and 9,5 and 8 and 6 and 7).

The 7th step, startup hoist engine are hauled out long rail, and are told to the car body both sides by a minute rail device from tie transport vehicle group, by behind the drawing strickle guide, adjust the position of minute rail drawing strickle guide until long rail, and making long rail inner width is 1435mm;

The 8th step, long rail pass through the delivery device front smoothly to the winding plant below, take down wedge, unclamp clamp;

The 9th step, the action of pusher clamping cylinder, making up and down, roller clamps rail.Motor drives the upper strata active roller and pushes long rail, until long rail quits work will release delivery device the time;

The tenth step, the winding plant wire rope is walked around the fixed pulley of front roller trolley, the rail afterbody under the wraparound delivery device and rail clamp connect again;

The 11 step, winding plant action are dragged to ground with rail from pushing car, are fixed on to spread on the rail sleeper with wire rope;

The 12 step, finish above-mentioned work after, the speed of long rail transporting train groups about with 6～10km/h during apart from front end rail head position, drops to below the 3km/h, and is commanded by the special messenger to overtake;

The 13 step, transfer to wire center with the hoist engine rail head that plays;

The 14 step, repeat the next round circulation of laying a railway track;

After the 15 step, traffic order are assigned, manually begin to remove the tool track (i.e. short rail) in the section of track, the short rail of dismounting turns over to railway roadbed tiny fragments of stone, coal, etc. shoulder, so that track taking-up vehicle reclaims.Simultaneously, P50 backing plate, P50 gauge apron and the A type elastic bar fastener that will remove reclaimed.

The 16 step, backing plate are changed complete and are checked and dial in long rail after confirming, 8-10 name constructor stands in the hand-held drill rod of the heart and dials and move long rail, and sleeper end 1 people holds drill rod and cooperates and guarantee that long rail enters rail support groove, successively long rail is all dialled in.

Dial in the distance between rear control general's rail starting point and the buffer area, larger such as distance, adopt and draw the rail device to draw rail.Draw behind the rail rail gap should not be greater than 25mm, should not be less than 15mm.After the long end of rail boring that is connected with buffer area, adopt the short rail of high-strength clamping plate and buffer area to connect.

With duration rail destination county because the factor affecting such as curve, about strand dislocation amount larger, reply long one is cut, a strand dislocation amount must not be greater than 100mm about assurance.

In addition, should be noted: sub-thread changes to when spreading long rail but change, and also can bifilarly change simultaneously the shop.And when long rail was changed the shop, the dislocation amount about long rail between the thigh was not more than 100mm.Simultaneously, prevent when changing backing plate that railway ballast from entering rubber mat plate bottom, top, the incomer must clean totally; Gauge apron, nylon panel seat etc. should be installed in strict accordance with standard, are strictly on guard against setup error.Long rail upper fastener is Type B I level elastic bar fastener, prevents from misapplying A type I level elastic bar fastener or II level elastic bar fastener.

The bolt nut of standing adopts internal combustion wrench fastening, and interim Tightening moment is preferably more than the 80NM, also can adopt and manually carry out fastening nuts.Because next step will lock construction, the short rail track bolt of the long rail in unit and buffer area fastening nuts moment gets final product more than 500NM.Generally speaking, should not hole between the long rail, the atresia clamping plate such as employing first aid device connect.The coupling nut Tightening moment is with reference to general clamping plate fastening torque of bolt.After manually changing the shop, gauge is checked in time that allowable variation is ± 3mm.

When carrying out the processing of rail end in the step 5011, first vertical plane and the side work plane of long rail are carried out straightening, use the inspection of the 1m ruler and its arrow degree to surpass ± 0.5mm through the long rail of straightening.After the straightening, with the end face sander rail end end face is polished again, and two locating surfaces of end face sander must contact closely connected with long rail in the bruting process; After polishing finishes simultaneously, also need rail end end face is carried out the essence file.The rail end end face of having filed will with plastics or the special-purpose protection box safekeeping of cleaning, make it to avoid to pollute and collision.In addition, the time to be welded after the processing of rail end finishes generally is no more than 30min, and particularly when the wet weathers such as sleet mist welded, the stand-by period should be shorter.

After adopting press-connection machine to position in the step 5012, should guarantee that two long rail surfaces flush, commissure camber≤0.3mm, high infraversion malposition≤0.2mm, as because of two rail differences in height are larger, available pad adjustment differs＜0.5mm, and the tread face is forbidden recessed.Simultaneously work plane will be put down, error≤0.3mm, and excessive or rail end has side sway can't straightening the time when the rail head width difference, should keep take the stock rail contoured surface as benchmark work plane straightness accuracy deviation＜0.5mm in half length.Two flange of rail face parallel misalignment≤1.0mm.Two rail end faces should be closely connected after implementing pre-top by the requirement of weldering rail, local gap≤0.3mm, but two base angles must be closely connected.As excessive because of the each side multiple factor bias, in the time of can't reaching above-mentioned requirements, need open press-connection machine in the fixation procedure, again process the rail end face, adjust rail, fill up rail until reach the technical requirements of welding, can not weld by force, in order to avoid affect welding quality.

Casing described in the step 5013 is the iron sheet case, and described insulation layer is asbestos fire prevention layer of cloth, be used for reducing ambient temperature to the impact of welding process, the natural calamities such as especially abominable at natural environment, sandstorm, crop smothering, snow disaster are more, day and night temperature reaches the Inner Mongolia of spending 40 more, and insulation, the buffer action of described dust-proof insulating case are most important.In the present embodiment, described iron sheet case is long 2.5 meters, wide 1.0 meters and high 0.8 meter cube casing, and is simple in structure, processing and fabricating convenient and it is easy and simple to handle to use, and the joint outside that only needs whole casing cover is contained in two described long rail gets final product.During actual welding, adopt the totally-enclosed welding machine scope of dust-proof insulating case energy, make the internal temperature of welding machine scope be in relative temperature constant state, effectively reduced the ectocine of temperature to Long rail welding.Actual when the heater in the gas pressure welding trailer is installed, after the heater both sides were pinched from side direction between the press-connection machine guide rod rail respectively, half-twist placed on the guide rod, and with its exact connect ion on request.

Actual when carrying out Long rail welding, in the present embodiment, when in the step 502 two described long rail being carried out the welding of plasticity air pressure, its welding process may further comprise the steps:

5021, the heater heating location is adjusted: before the igniting, heating location to heater in the gas pressure welding trailer (is specifically adjusted the hook length of press-connection machine swing mechanism, rotate the turning cylinder of heater supporting carriage) adjust, and so that the fire hole plane of described heater parallel with the welding ends of welded spreading rail (maximum deviation place≤1.0mm), simultaneously so that between described heater fire hole end face and the welded spreading rail lateral profile face apart from being 25mm ± 1mm.

5022, pre-top: the running parameter to the fluid power system that is used with press-connection machine described in the step 5012 is adjusted, and is the pre-jacking force of 18Mpa～20Mpa so that apply size by described press-connection machine at the rail end of welded spreading rail.

5023, igniting welding: after feeding oxygen and acetylene 3s～4s in the described heater, described heater is lighted a fire; After the igniting, swing described heater the welding position between two described long rail is heated.During actual the igniting, be to light a fire with firelock outside the 50mm heater apart from welding seam distance, forbid using hand direct-fire.

5024, step-down and pressurize: when the welding ends to welded spreading rail to be heated produces plastic strain (this moment, commissure and near generation thereof highly were the slight projection of 1～3mm), running parameter by fluid power system described in the set-up procedure 5022, the pre-jacking force that described press-connection machine is applied to welded spreading steel rail end is down to 8Mpa～10Mpa and is continued pressurize, by described heater the welding position between two described long rail is continued to heat simultaneously.

5025, pressurization upset: be 1.5mm when a plurality of areas appear in the flange of rail angle upper surface of finding welded spreading rail ²～3mm ²Welding pool the time (this moment rail head end face have " minute surface molten bath " moving with flame), running parameter by fluid power system described in the set-up procedure 5022, the pre-jacking force that described press-connection machine is applied to welded spreading steel rail end rises to 32Mpa～35Mpa and continues pressurize, with upset that two soldered described long rail are pressurizeed, and the pressurization upset time is 50s ± 15s.

5026, push away protruding: after upset finishes, extinguish heater and adopt and push away that salient mounting is put and according to the protruding method that pushes away in the conventional gas pressure welding of rail, will weld discharge-amount and push away and remove.

Push away in the convex process, when pressure rises to 400Mpa, push away salient mounting and put and still can not advance when pushing away except overlap, should stop to push away protruding, wait to unload and push away salient mounting postpone, again welding.

5027, weld seam normalizing: when treating that the weld seam temperature that forms is down to 400 ℃～500 ℃ between two described long rail, adopt described heater that described weld seam is carried out normalized treatment, and the initial temperature of normalized treatment is 400 ℃～500 ℃, and finishing temperature is 850 ℃～900 ℃.

Actual when carrying out the weld seam normalizing, between 0min to the 2min, the swing of heater centered by weld seam, overall width 40mm, the per minute number of oscillations is 50～60 times; Centered by weld seam, heater is the scope swing of 60mm～80mm at width from 2min to the 3min, and the per minute number of oscillations is 35 times～40 times.

5028, postwelding polishing and aligning: utilize profiling sander to be polished respectively in end face and the side of two described long rail junctions, and adopt rail bender to align described weld seam.

When in step 5023 and the step 5024 welding position between two described long rail being heated, the oscillating quantity of described heater is 15mm～20mm and its hunting frequency is 60 beats/mins ± 10 beats/mins; When pressurizeing upset in the step 5025, the oscillating quantity of described heater is that 30mm ± 5mm and its hunting frequency are 80 beats/mins ± 10 beats/mins.

During actual the welding, can according to the concrete needs of reality, the above-mentioned parameter in the welding process be adjusted accordingly.

After welding finishes, also need carry out seam inspection, flaw detection will be treated that weld seam naturally cools to below 50 ℃ and just can carry out.During the defectives such as that the inner any position of weld seam is found to have is lack of penetration, crackle, pore slag inclusion, this soldering tip must be scrapped and reweld.

When carrying out destressing with the locking construction in the step 6, adopting low temperature, drop-down to over loose be main, and the assisting natural temperature is diffused, its principle is: under the condition of the section of diffusing natural temperature, rail underlay cylinder unclamps whole fasteners and makes its inefficacy, and long rail can freely be elongated or shortened, and use certain external force, allow and diffuse rail joint and be in zero stress state.Calculate the amount of tension of diffusing rail under the zero stress state according to design fastening-down temperature of rail and actual rail temperature (being less than or equal to design fastening-down temperature of rail scope), after drawing the rail device to pull out this elongation, namely lock rail.

Gapless track shrinks when expanding elongation, low temperature when high temperature, therefore produces very large pressure, tensile stress in the rail, how to guarantee that it is the key issue that gapless track will solve that circuit is stablized.In the present embodiment, by fastening station key way nail spring fastener rail is produced buckle press rail tightly is connected with sleeper, closely knit railway roadbed produces larger vertical, lateral resistance to sleeper, and long rail string firmly is locked in the railway roadbed.Reasonably fastening-down temperature of rail is to guarantee the stable key factor of gapless track.Because the TEMPERATURE FORCE peak value that the district occurs in the breathing zone is greater than the fixed area TEMPERATURE FORCE, general fastening-down temperature of rail is than high 5-10 ℃ of neutral temperature (the highest, minimum rail temperature average), to reduce the TEMPERATURE FORCE peak value at breathing zone middle part, runway when preventing summer rail temperature rise guarantees that circuit is stable.

The general 100m of interval gapless track breathing zone arranges buffer area between breathing zone and the trouble district, and buffer area arranges 3-4 to standard gauge.Rail temperature rise or when reducing behind the joint resistance of breathing zone rail temperature force greater than high-strength clamping plate, the elongation of breathing zone rail or contraction, the temperature that surpasses joint resistance, power is passed to buffer area, overcome vertical ballast resistance of buffer area sleeper by root, finally reach balance, and can directly not be passed to track switch, guarantee that the normal use of track switch is unaffected.

Simultaneously, also need before unit rail joint destressing, to set in advance the displacement observation stake.The displacement observation stake of unit rail joint terminus is as far as possible corresponding with unit rail joint welding point.The displacement observation stake of switch area on request position arranges accurately, and paired displacement observation stake line should be perpendicular to circuit.Can keep off Zha Qiang in the side on the bridge Steel-bar Pile is set, the inherent line-to-line of standing is buried the observation stake underground.

Because rail temperature and ongoing operation rail temperature are inconsistent during long rail laying, after spring removal, the rail jack-up, the constraint of rail is removed, rail will produce displacement, but because the impacts such as internal rail stress and roller frictional resistance, this moment, internal rail stress was non-vanishing, record rail interim displacement, the foundation of diffusing as later construction.

Adopted the cylinder method of diffusing to diffuse locking when the same day, the rail temperature met fastening-down temperature of rail:

After blocking circuit, adopt internal combustion wrench to unclamp fastener, fastener is separated with gauge apron.The cylinder of packing into behind the rail jack jacking rail is placed on the cylinder rail.About cylinder mounting distance 8m, unsuitable excessive.In time observe the rail temperature, when the rail temperature enters fastening-down temperature of rail, manually holding the symmetrical rail waist that knocks of hammer produces vibration and makes the residual stress in the rail obtain discharging, knocking the Ying Youyi end carries out to the other end, remove immediately cylinder, adopt the fastening station of internal combustion wrench bolt nut locking rail, Tightening moment 100～150NM contacts as standard with gauge apron take the fastener forehead.The locking construction is advanced to the other end by an end.The average of the rail temperature when record cell rail starting point, terminal point locking is as the fastening-down temperature of rail of unit rail.

Diffuse locking and advanced to large mileage by little mileage, when diffusing, unclamp this unit fastener and adjacent locked unit 100m broken string road fastener, after the welding of locking plumb joint, this unit and adjacent locked unit 100m rail together diffuse locking between the unit joint.

And when temperature lower, the rail temperature was lower than design and adopted the method for comprehensively diffusing during fastening-down temperature of rail the same day:

Comprehensively the method for diffusing is unclamped fastener, mounting rotary drum diffuses method with cylinder, because the rail temperature is lower than the design fastening-down temperature of rail, must adopts and draw the rail device that rail is stretched, and the tensile elongation design formulas is as follows:

Tensile elongation σ l=α * l * (the T lock-t)

σ l: the rail of each interim displacement observation point calculates amount of tension;

α: the linear expansion coeffcient of rail: get 0.0000118m/ ℃;

T lock: construction control fastening-down temperature of rail;

T: the average rail temperature of rail during the stretching rail;

L: diffused the distance of unit rail breathing zone starting point each displacement observation point to last time.

For guaranteeing that unit rail saves each position linear extension, interim observation point should equidistantly be set, 3 in Curve Segment adopts rail-impacting block to hit rail during stretching, alleviates cylinder to the restricting resistance force of rail.Calculate in advance the stretch value of each observation point, can carry out line lock when each point actual measurement stretch value and calculated value meet during stretching.

The extremely frigid zones construction period is shorter, but is assurance line lock quality temporary locking when the rail temperature is low, the more formal locking of row after temperature gos up when spring.

The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.

Claims (10)

1. laying of welded long rails and welding procedure technique under the large temperature difference, the husky condition of high wind is characterized in that this technique may further comprise the steps:

Section of track nail on line and section of track nail connection job practices are routinely adopted in the construction of step 1, section of track nail connection, and working a plurality of sections of track are followed closely the connection construction continuously; The described section of track comprises plurality of sleepers and two tool tracks that are installed on the many described sleepers;

Step 2, section of track handling: in the section of track nail connection work progress, adopt hanging device and transport vehicle in the step 1, the section of track of finishing constructing is transported to the scene of laying in batches;

Step 3, section of track laying construction: adopt track-laying machine and according to the conventional laying method of the section of track, lay the on-the-spot section of track and lay being transported to, and obtain the track that is laid to by the section of track;

Step 4, laying of welded long rails construction, its laying construction process is as follows:

401, long rail displacement: according to the paving location that designs in advance, and adopt shift equipment to be transported in advance and lay many on-the-spot long rail, move to respectively and laid on the sleeper of finishing track in the step 3;

402, switch tracks: according to the method that the switches tracks job practices of routine, adopt the long rail described in the step 401 that the tool track in the section of track described in the step 3 is changed the shop piecemeal;

Step 5, long rail field welding construction: adopt the gas pressure welding trailer and according to plasticity air pressure Fundamentals of Welding, to change in the step 4 spread after before and after two adjacent described long rail weld, its welding process is as follows:

501, prepare before the weldering, its preparation mainly may further comprise the steps:

5011, the rail end is processed: adopt grinding apparatus, the rail end of two soldered long rail is carried out respectively grinding process;

5012, press-connection machine location: adopt the rail welding press-connection machine, the rail end of two described long rail is fixedly clamped, and so that the flange of rail of two described long rail is concordant;

5013, dust-proof insulating case cover dress: in the joint outside of two described long rail, cover fills a dust-proof insulating case, and described dust-proof insulating case is the outside casing that is laid with insulation layer;

502, plasticity air pressure welding: in described dust-proof insulating case, and according to routine is carried out the welding of plasticity air pressure to rail welding method two described long rail are carried out the welding of plasticity air pressure, and obtain the gapless track that construction is finished;

Step 6, destressing and locking construction: according to conventional gapless track destressing and locking construction technology, the described gapless track that construction in the step 5 is finished carries out destressing and locking construction processing.

2. according to laying of welded long rails and welding procedure technique under the large temperature difference claimed in claim 1, the husky condition of high wind, it is characterized in that: be provided with a plurality of stations on the section of track described in the step 1 nail on line and a plurality of described station is followed successively by from front to back the upper pillow station, turns over the pillow station, stamping die anchoring station, demoulding station, sleeper right station, loose pillow station, cloth rail station, pre-upper fastener station, fastening clip station and check station, and the nail connection job practices to all sections of track in the step 1 is all identical, and wherein the nail of any section of track connection work progress is as follows:

101, upper pillow: adopt the straddle truck be laid in the upper pillow station, with follow closely connection section of track need with plurality of sleepers hang onto side by side follow closely online on, and be transferred to and turn over the pillow station by following closely many described sleepers after online will the scattering;

102, turn over pillow: adopt to be laid in the automatic pillow-turning gantry that turns over the pillow station, translate into one by one the bottom surface up with being transferred to many described sleepers that turn over the pillow station, simultaneously concrete lumps and earth in the nail hole in the described sleeper are removed; Afterwards, online many after turning over pillow described sleepers are transferred to stamping die anchoring station by following closely;

103, stamping die anchoring: be laid in the anchoring template of stamping die anchoring station according to conventional stamping die anchoring construction method and employing, many described sleepers delivering to stamping die anchoring station are carried out respectively the stamping die anchoring; And when carrying out the stamping die anchoring, the sulphur-bonded mortar that adopts conventional stamping die anchoring to use carries out anchoring to the screw spike that pours in the nail hole; Afterwards, online many described sleepers after the stamping die anchoring are transferred to demoulding station by following closely;

104, the demoulding: according to conventional release method, many described sleepers delivering to demoulding station are carried out respectively the demoulding; Afterwards, onlinely many after the demoulding described sleepers are transferred to sleeper right station by following closely;

105, sleeper rights: adopt to be laid in sleeper and to right turning over the pillow device or manually living the method that the sleeper middle part rights with iron fork fork of station, many described sleepers that right station to delivering to sleeper right respectively; Afterwards, online many after sleeper rights described sleepers are transferred to loose pillow station by following closely;

106, loose pillow: according to the sleeper pitch of design in advance, to many described sleepers that the are transferred to loose pillow station pillow that falls apart; Afterwards, online many described sleepers behind loose pillow are transferred to cloth rail station by following closely;

107, cloth rail: adopt the straddle truck that is laid in cloth rail station, two described tool tracks in the step 1 are lifted respectively on many described sleepers behind the loose pillow tool track behind the first dress of formation; Afterwards, be transferred to pre-upper fastener station by the tool track of following closely after online will just the dress;

108, pre-upper fastener: artificial fastener for installing on the tool track behind the first dress, and be transferred to the fastening clip station by following closely the online tool track that fastener will be housed;

109, fastening clip: artificially by electric wrench the fastener of installing in the step 108 is carried out fasteningly, and obtain the section of track finished product that the nail connection is finished; Afterwards, online described section of track finished product is transferred to the inspection station by following closely;

110, check: according to the inspection method of conventional section of track end product quality, the quality of the finished product of the section of track described in the step 109 is checked.

3. according to laying of welded long rails and welding procedure technique under the large temperature difference claimed in claim 2, the husky condition of high wind, it is characterized in that: when the many described sleepers to being transferred to loose pillow station described in the step 106 fall apart pillow, adopt the loose pillow device that being laid in loose pillow station or the loose jigger pillow that falls apart of resting the head on.

4. according to laying of welded long rails and welding procedure technique under the large temperature difference claimed in claim 3, the husky condition of high wind, it is characterized in that: the nail described in the step 1 is online to be comprised by two rows and is crane group that the crane (3) of parallel laying forms and arranges the conveying carrier that vertically moves back and forth between the described cranes (3) two, and described crane group and described conveying carrier are used; When adopting loose pillow jigger that many described sleepers that are transferred to loose pillow station are fallen apart pillow in the step 106, its loose pillow process is as follows:

1061, hang sleeper: many after sleeper rights described sleepers are hung respectively to the described loose pillow car of two row by the straddle truck that is laid in loose pillow station, and so that the left and right end portions of every sleepers carry on a shoulder pole respectively be placed on position in the described loose pillow car of two row over against two sliding trolleys (2) on, and so that every sleepers all is placed on the middle part of two described sliding trolleys (2); In this step, when hanging respectively many described sleepers to the described loose pillow car of two row, the connection iron chains (4) of two row in the described loose pillow car all are in relaxed state; And with many described sleeper hang respectively to two row described loose pillow car before, with two row described cranes (3) rise to the extreme higher position;

1062, bindiny mechanism installs: bindiny mechanism is installed respectively in front end or the rear end of the described loose pillow car of two row, and by bindiny mechanism the described loose pillow car of two row is separately fixed on the described conveying carrier; Before described bindiny mechanism installed, first corresponding front side or the rear side that described conveying carrier is moved to the described loose pillow car of two row;

1063, even loose pillow: start that described conveying carrier vertically moves forward or vertically mobile backward, and described conveying carrier vertically moves forward or vertically mobile backward the time, it is mobile forward or backward synchronously to drag the described loose pillow car of two row, until the connection iron chains (4) in the described loose pillow car of two row is all pulled open and is in straightened condition, then finish the loose pillow operation of many described sleepers;

1064, sleeper displacement: described conveying carrier is moved to the described sleeper of many behind loose pillow below in the step 1063, afterwards to the two described cranes of row (3) adjustment that descend synchronously, many described sleepers until will fall apart behind the pillow all steadily are placed on the described conveying carrier, and the many described sleepers that will fall apart after resting the head on by described conveying carrier subsequently are transferred to cloth rail station.

5. according to laying of welded long rails and welding procedure technique under the large temperature difference claimed in claim 4, the husky condition of high wind, it is characterized in that: described loose pillow jigger comprises all identical loose pillow cars of two array structures and size, the corresponding walking rails (1) that moves forward and backward for the described loose pillow car of two row that is provided with respectively on the two described cranes of row (3); Described loose pillow car comprises all identical sliding trolleys (2) of a plurality of structures and size, and connect by connecting iron chains (4) between adjacent two sliding trolleys (2), the quantity of included sliding trolley (2) is identical with the quantity of many described sleepers in the step 1 in the described loose pillow car of every row, the described loose pillow car of two row is the bilateral symmetry laying and the two vertically moves synchronously, and the described loose pillow car of two row forms the loose pillow device that many described sleepers are evenly fallen apart synchronously and rest the head on; Described sliding trolley (2) comprises the horizontal supporting plate (2-1) that described sleeper is supported and is installed in the walking mechanism of described horizontal supporting plate (2-1) bottom, the structure of described walking mechanism is corresponding with the structure of walking rails (1), and D=d+L, D is the sleeper pitch that designs in advance in the formula, L is for connecting the length of iron chains (4), and d is the longitudinal length of horizontal supporting plate (2-1).

6. according to laying of welded long rails and welding procedure technique under claim 4 or the 5 described large temperature difference, the husky condition of high wind, it is characterized in that: described walking rails (1) comprises two side by side equal identical solid steel pipes of laying and structure and size, and two solid steel pipes are parallel to be laid in crane (3) top and two described solid steel pipes are respectively solid steel pipe one and solid steel pipe two; Described walking mechanism comprises all identical road wheels (2-2) of three structures and size, and described horizontal supporting plate (2-1) bottom correspondence is provided with three wheel seats (2-3), and described road wheel (2-2) all is installed on the wheel seat (2-3) by wheel shaft; Three described road wheels (2-2) comprise that a road wheel one of walking along described solid steel pipe delegation and two are all along the road wheels two of described solid steel pipe two walkings, it is corresponding with the installation position of described solid steel pipe one that described road wheel one is laid in a middle side part and its installation position of horizontal supporting plate (2-1), opposite side and the installation position of the two that two described road wheels two one in front and one in back are laid in horizontal supporting plate (2-1) are all corresponding with the installation position of described solid steel pipe two, and two described road wheel two symmetries are laid in the both sides, front and back of described road wheel one.

7. according to laying of welded long rails and welding procedure technique under claim 4 or the 5 described large temperature difference, the husky condition of high wind, it is characterized in that: described horizontal supporting plate (2-1) is rectangular steel plates, and the longitudinal length of described rectangular steel plates is identical with the width of described sleeper.

8. according to laying of welded long rails and welding procedure technique under the described large temperature difference of arbitrary claim in the claim 1 to 5, the husky condition of high wind, it is characterized in that: the casing described in the step 5013 is the iron sheet case, and described insulation layer is asbestos fire prevention layer of cloth.

9. according to laying of welded long rails and welding procedure technique under the described large temperature difference of arbitrary claim in the claim 1 to 5, the husky condition of high wind, it is characterized in that: the described tool track of step 1 is that length is the short rail of 12.5m or 25m; Long rail described in the step 4 is that length is the long rail of 100m～500m.

10. according to laying of welded long rails and welding procedure technique under the described large temperature difference of arbitrary claim in the claim 1 to 5, the husky condition of high wind, it is characterized in that: in the step 502 two described long rail are carried out plasticity air pressure when welding, its welding process may further comprise the steps:

5021, the heater heating location is adjusted: before the igniting, heating location to heater in the gas pressure welding trailer is adjusted, and so that the fire hole plane of described heater is parallel with the welding ends of welded spreading rail, simultaneously so that between described heater fire hole end face and the welded spreading rail lateral profile face apart from being 25mm ± 1mm;

5022, pre-top: the running parameter to the fluid power system that is used with press-connection machine described in the step 5012 is adjusted, and is the pre-jacking force of 18Mpa～20Mpa so that apply size by described press-connection machine at the rail end of welded spreading rail;

5023, igniting welding: after feeding oxygen and acetylene 3s～4s in the described heater, described heater is lighted a fire; After the igniting, swing described heater the welding position between two described long rail is heated;

5024, step-down and pressurize: when the welding ends to welded spreading rail to be heated produces plastic strain, running parameter by fluid power system described in the set-up procedure 5022, the pre-jacking force that described press-connection machine is applied to welded spreading steel rail end is down to 8Mpa～10Mpa and is continued pressurize, by described heater the welding position between two described long rail is continued to heat simultaneously;

5025, pressurization upset: be 1.5mm when a plurality of areas appear in the flange of rail angle upper surface of finding welded spreading rail ²～3mm ²Welding pool the time, running parameter by fluid power system described in the set-up procedure 5022, the pre-jacking force that described press-connection machine is applied to welded spreading steel rail end rises to 32Mpa～35Mpa and continues pressurize, with upset that two soldered described long rail are pressurizeed, and the pressurization upset time is 50s ± 15s;

5026, push away protruding: after upset finishes, extinguish heater and adopt and push away that salient mounting is put and according to the protruding method that pushes away in the conventional gas pressure welding of rail, will weld discharge-amount and push away and remove;

5027, weld seam normalizing: when treating that the weld seam temperature that forms is down to 400 ℃～500 ℃ between two described long rail, adopt described heater that described weld seam is carried out normalized treatment, and the initial temperature of normalized treatment is 400 ℃～500 ℃, and finishing temperature is 850 ℃～900 ℃;

5028, postwelding polishing and aligning: utilize profiling sander to be polished respectively in end face and the side of two described long rail junctions, and adopt rail bender to align described weld seam;

When in step 5023 and the step 5024 welding position between two described long rail being heated, the oscillating quantity of described heater is 15mm～20mm and its hunting frequency is 60 beats/mins ± 10 beats/mins; When pressurizeing upset in the step 5025, the oscillating quantity of described heater is that 30mm ± 5mm and its hunting frequency are 80 beats/mins ± 10 beats/mins.

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