CN113737579B - Small-radius I-shaped switch rail telescopic regulator modified on site and modification construction method thereof - Google Patents
Small-radius I-shaped switch rail telescopic regulator modified on site and modification construction method thereof Download PDFInfo
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- CN113737579B CN113737579B CN202111092605.4A CN202111092605A CN113737579B CN 113737579 B CN113737579 B CN 113737579B CN 202111092605 A CN202111092605 A CN 202111092605A CN 113737579 B CN113737579 B CN 113737579B
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- rail
- plate
- point
- fixed
- stock
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/02—Tongues; Associated constructions
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/008—Drainage of track
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/16—Transporting, laying, removing, or replacing rails; Moving rails placed on sleepers in the track
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/04—Sectioning or slitting, e.g. by sawing, shearing, flame-cutting
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/60—Rail fastenings making use of clamps or braces supporting the side of the rail
Abstract
The invention discloses a small-radius I-shaped point rail telescopic regulator for site reconstruction and a reconstruction construction method thereof, wherein the telescopic regulator comprises a continuous large iron plate, a cover plate structure, a base plate assembly and a fastener system, wherein the continuous large iron plate which extends along the ballast bed is anchored on the ballast bed at the bottom of a rail bearing groove, a plurality of base plate assemblies and the cover plate structure are arranged along the continuous large iron plate, the base plate assembly is fixed on the continuous large iron plate through the fastener system, the cover plate structure is fixed on the continuous large iron plate to cover the area from the rail head of a stock rail or a point rail to the edge of the rail bearing groove, a guide rail support, a fixed rail support, the stock rail and the point rail are fixed on the base plate assembly, the base plate assembly comprises a sliding table base plate and a height adjusting pad, the height adjusting pad in each base plate assembly is arranged between the sliding table base plate and the continuous large iron plate, and the thickness of the height adjusting pad in each base plate assembly is arranged at a corresponding position according to a vertical curve. The invention has high site construction speed and can meet the requirements on the vertical curve, the radius of the guide curve, the safety and the like of the telescopic regulator.
Description
Technical Field
The invention belongs to the field of railway engineering, and particularly relates to a small-radius I-shaped switch rail expansion regulator modified on site and a modification construction method thereof.
Background
Because the bridge and the ground are different in material, the telescopic regulator is generally required to be arranged at the joint when the track is arranged, so that the track line which is not provided with the telescopic regulator in the past is necessarily transformed, the telescopic regulator is added at the joint, and the running reliability of the track line in the past is improved. Some bridges originally adopt a mixed pavement structure on which trains and automobiles can go on the road, and generally adopt groove-shaped rails or I-shaped rails to be buried in arranged rail bearing grooves, sand is filled inside the bridge, concrete is adopted as required at the top to make a supporting pavement, and other parts are paved into the pavement by reinforced concrete with higher strength. At this moment, the improvement scheme can be influenced by the originally arranged track structure, and particularly, the reinforced concrete road which is difficult to damage and repair causes larger limitation on the arrangeable space of the telescopic regulator, and the guide curve radius on the point rail is required to be arranged by the rail bearing groove used by the original track when the improvement is performed, so that the novel telescopic regulator is smaller than the prior art, has smaller width of the telescopic regulator and can be suitable for a reasonable vertical curve track after the improvement. The existing bridge is improved by considering that the construction process possibly needs to pass automobiles, so that the improvement can be only performed in a limited skylight period in the use process of the bridge, and the improvement on the structure and the construction mode is required, so that the construction efficiency is greatly improved.
Disclosure of Invention
The invention aims to provide a small-radius I-shaped point rail telescopic adjuster which is reformed on site, and aims to solve the technical problems that in the prior art, the original rail bearing groove space is insufficient, the available skylight period time in the reforming process is limited, and the reforming feasibility is influenced on the premise of ensuring safety and reliability.
The small-radius I-shaped point rail telescopic adjuster comprises a continuous large iron plate, a cover plate structure, a base plate assembly and a fastener system, wherein a rail bearing groove for arranging rails is formed in a road surface of a reconstruction site, the continuous large iron plate which extends along a rail bed is anchored on the rail bed at the bottom of the rail bearing groove, a plurality of base plate assemblies and the cover plate structure are arranged along the continuous large iron plate, the base plate assemblies are fixed on the continuous large iron plate through the fastener system, the cover plate structure is fixed on the continuous large iron plate to cover the rail head of a stock rail or the point rail to the edge area of the rail bearing groove, a guide rail support, a fixed rail support, the stock rail and the point rail are fixed on the base plate assemblies, the base plate assemblies comprise sliding table base plates and height adjusting pads, the height adjusting pads are arranged between the sliding table and the continuous large iron plates, and the thickness of the height adjusting pads in each base plate assembly are arranged at the corresponding positions according to vertical curves.
Preferably, the cover plate structure comprises a supporting seat vertically welded on the continuous large iron plate and a cover plate fixed at the top of the supporting seat through bolts, the cover plate comprises a working edge cover plate and a non-working edge cover plate, the non-working edge cover plate is arranged on the outer side of the telescopic regulator and is a horizontal plate I, the working edge cover plate comprises a horizontal plate II and an L-shaped plate, a reserved space for a wheel rim to pass through is reserved from the horizontal plate II to the working edge, the vertical part of the L-shaped plate is welded at the bottom of the horizontal plate II, and the horizontal part extends out of the lower part of the reserved space and is abutted to the bottom surface of a rail head of a corresponding point rail or a corresponding stock rail.
Preferably, a waterproof sealing strip I is arranged between the cover plate and the side wall of the opening of the rail bearing groove, a waterproof sealing strip II is arranged between the L-shaped plate and the bottom surface of the rail head, a waterproof sealing strip III is arranged between the non-working side cover plate and the rail head of the stock rail, and the elastic compressible stroke of the waterproof sealing strip II and the waterproof sealing strip III is matched with the transverse offset distance generated in the expansion process of the rail head of the stock rail.
Preferably, the point rail is formed by cutting and reforming a rail with the same model as the stock rail, the height of the point rail is the same as that of the stock rail, and the abutting surface of the rail bottom of the stock rail and the rail bottom of the point rail are abutted and have the same guide curve as that of the rail head parts of the stock rail and the rail head.
Preferably, the guide rail support is arranged at the outer side of the stock rail, the bottom of the guide rail support is fixed on the backing plate assembly through an elastic clamp fixed by bolts, and the supporting part of the guide rail support is supported on the side face of the rail web of the stock rail; the support part of the guide rail support is provided with three protruding support points for supporting the stock rail, the protruding support points comprise an upper protruding support point and a lower protruding support point which correspond to the upper end and the lower end of the rail web respectively, and further comprise a bottom protruding support point which corresponds to the upper part of the extending part of the rail bottom, the upper protruding support point and the lower protruding support point are in butt joint on the rail web under normal conditions, and a gap is reserved between the bottom protruding support point and the rail bottom.
Preferably, the fixed rail brace comprises a point rail fixed rail brace, the bottom of the fixed rail brace is welded on the backing plate assembly, the supporting part of the point rail fixed rail brace is fixed on the rail web of the point rail, the rail bottom side surface of the point rail is abutted against the bottom side surface of the point rail fixed rail brace, a rigid clip is further fixed on the bottom of the point rail fixed rail brace, and the rigid clip is pressed on the point rail bottom and the bottom at the same time.
The invention also provides a reconstruction construction method adopting the small-radius I-shaped point rail expansion regulator, which comprises the following steps:
step one, cleaning the peripheral pavement of an original track;
step two, cutting off the original steel rail, and removing sleeper parts protruding out of the bed surface of the ballast bed;
step three, the preassembled part of the telescopic regulator is integrally dropped into the rail bearing groove;
the preassembled part of the telescopic regulator comprises a continuous large iron plate, a backing plate assembly, a stock rail, a point rail, a guide rail support, a fixed rail support, a positioning plate and a fastener system which are already assembled on the continuous large iron plate in advance in a factory building;
drilling holes on the ballast bed through holes arranged on the continuous large bottom plate, and implanting spike anchors;
step five, filling high-strength epoxy resin-based mortar into the bottom of the continuous large bottom plate;
step six, connecting steel rails;
and step seven, arranging a drain pipe and a cover plate structure.
Preferably, when the preassembled part is assembled, the three parts of the rail bottom surface of the stock rail, the upper protruding supporting point and the lower protruding supporting point are coated with lubricating grease after the assembly of the stock rail and the guide rail support is completed, the positioning plate is placed on the backing plate assembly after the assembly of the stock rail and the guide rail support, the positioning plate is fixed through bolts and is ensured to be abutted against the bottom side surface of the guide rail support, and then the positioning plate is welded and fixed with the bottom of the guide rail support.
Preferably, in the first step, the track bed surface at the bottom of the track bearing groove is exposed after cleaning; in the second step, a part of the sleeper is higher than the ballast bed surface, and only the sleeper part protruding out of the ballast bed surface is cut and removed under the condition; in the fifth step, the bottom of the continuous large iron plate is leveled, the thickness of the high-strength epoxy resin-based mortar is controlled, and the alignment of the stock rail and the switch rail with the original rail reserved at the two ends of the connecting telescopic regulator is ensured.
Preferably, in the seventh step, a plurality of supporting seats are welded on the continuous large iron plate, the supporting seats are arranged between the adjacent backing plate assemblies, then drain pipes are arranged on the two sides of the continuous large iron plate, and then a cover plate provided with sealing strips in a mode is fixed at the top of the supporting seats through bolts, so that the waterproof sealing strips I press the side wall of the opening of the rail bearing groove, the waterproof sealing strips II press the bottom surface of the point rail or the rail head of the stock rail on the corresponding side, and the waterproof sealing strips III press the rail head on the corresponding side of the stock rail.
The invention has the following advantages: the invention is characterized in that the backing plate component, the fastener system, the guide rail support, the fixed rail support, the stock rail and the switch rail are all assembled and fixed on the continuous large iron plate, then are integrally placed into the track bearing groove which is dug and constructed in advance, and are fast anchored with the track bed at the bottom of the track bearing groove, and the parameter detection in various aspects of position, length, radian and the like can be carried out in a factory before construction, so that the parameters of the telescopic regulator finished before construction are ensured to meet the construction requirements, and the structural parameters of the telescopic regulator are ensured to meet the technical requirements.
The invention adopts the structures and the installation modes of the guide rail support and the fixed rail support, and can ensure the supporting or fixing effect under the condition of reducing the extending distance of the rail support to the side surface. The guide rail brace utilizes the protruding stay point of end to extrude the spacing to the sloping below when outwards removing to the rail end, and the rail end of stock rail both allows when stretching moves a little outside in the safe range, carries out effective support to the key position of rail web of stock rail, rail end after moving a certain distance outward, combines the improvement of switch rail structure to further reduce the camber distortion effect of stock rail railhead. Therefore, the width and the occupied space of the telescopic regulator can be reduced on the premise of ensuring the safety requirement of the telescopic regulator, and the telescopic regulator is suitable for the transformation condition that the space of the rail bearing groove is limited.
And finally, an improved reconstruction construction scheme is adopted, the whole preassembled part is used for downward construction, the construction efficiency is greatly improved, the parameters of each part are ensured to meet the requirements, and meanwhile, the high-strength epoxy resin-based mortar is filled into the bottom of the continuous large iron plate for leveling, so that the effect of stably supporting the large iron plate can be realized without careful modification of the ballast bed surface. The cover plate structure and the construction method thereof adopted by the invention realize the effects of effective waterproof drainage and convenient maintenance, and keep the normal traffic requirement of the mixed pavement.
Drawings
Fig. 1 is a schematic view of a small radius i-shaped point rail telescoping adjuster of the present invention adapted in situ.
Fig. 2 is a cross-sectional view in the direction A-A of the structure shown in fig. 1.
Fig. 3 is a cross-sectional view in the direction B-B of the structure shown in fig. 1.
Fig. 4 is a cross-sectional view in the direction C-C of the structure shown in fig. 1.
Fig. 5 is a schematic view of an anchoring structure of the continuous large plate in the structure shown in fig. 1.
Fig. 6 is a schematic structural view of the cover plate structure in the structure shown in fig. 1.
Fig. 7 is a top view of the structure shown in fig. 6.
Fig. 8 is a schematic view of the structure of the spring clip in the structure shown in fig. 1.
Fig. 9 is a schematic view showing the arrangement of the drain pipe in the structure shown in fig. 1.
Fig. 10 is a schematic view of the structure of the present invention when it is disposed in a rail groove.
The marks in the drawings are: 1. point rail, 2, stock rail, 3, continuous large iron plate, 4, fastener system, 41, gauge block, 5, waterproof sealing strip, 6, rigid clip, 61, step structure, 62, protruding structure, 7, guide rail support, 8, fixed rail support, 9, locating plate, 10, height adjusting pad, 11, spike, 12, high-strength epoxy resin-based mortar, 13, non-working edge cover plate, 14, working edge cover plate, 15, supporting seat, 16, drain pipe, 17, ballast bed, 18 and sleeper.
Detailed Description
The following detailed description of the embodiments of the invention, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate, and thorough understanding of the inventive concepts and aspects of the invention by those skilled in the art.
As shown in fig. 1-10, the invention provides a small-radius i-shaped point rail telescopic regulator which comprises a continuous large iron plate 3, a cover plate structure, a base plate assembly and a fastener system 4, wherein a modified site road surface is provided with a rail bearing groove for arranging steel rails, the continuous large iron plate 3 which extends along the rail bed 17 is anchored on the rail bed 17 at the bottom of the rail bearing groove, a plurality of base plate assemblies and the cover plate structure are arranged along the continuous large iron plate 3, the base plate assemblies are fixed on the continuous large iron plate 3 through the fastener system 4, the cover plate structure is fixed on the continuous large iron plate 3 to cover the area from the rail head of a stock rail 2 or a point rail 1 to the edge of the rail bearing groove, the base plate assemblies are fixedly provided with guide rail supports 7, fixed rail supports 8, the stock rail 2 and the point rail 1, the base plate assemblies comprise sliding table base plates and height adjusting pads 10, the height adjusting pads 10 are arranged between the sliding table base plates and the continuous large iron plate 3, and the height adjusting pads 10 in the base plate assemblies are arranged at corresponding positions according to the vertical curves.
The structure enables the assembled telescopic regulator to be integrally placed into a track bearing groove which is dug and constructed in advance after the backing plate component, the fastener system 4, the guide rail support 7, the fixed rail support 8, the stock rail 2 and the point rail 1 are assembled and fixed on the continuous large iron plate 3, and to be fast anchored with a track bed 17 at the bottom of the track bearing groove, and the parameter detection in multiple aspects such as position, length, radian and the like can be carried out in a factory before construction, so that the parameters of the telescopic regulator finished before construction are ensured to meet the construction requirements, and the structural parameters of the telescopic regulator are ensured to meet the technical requirements, and the construction time is saved. On the other hand, the continuous large iron plate 3 facilitates the setting of a follow-up cover plate structure, and the setting of the cover plate structure is convenient for the road surface to still accord with the mixed road surface requirement of a normal passing train and an automobile after transformation, can ensure the normal use of the telescopic regulator, effectively saves the construction time, and has multiple purposes. The two sides of the pad assembly are provided with stepped protrusions, and the fastener system 4 is pressed and fixed on the pad assembly through the track gauge blocks 41 pressed on the stepped protrusions.
The fixed rail support 8 comprises a fixed rail support 8 (shown in fig. 3) of the point rail 1, the bottom of the fixed rail support 8 is welded on the backing plate assembly, the supporting part of the fixed rail support 8 of the point rail 1 is fixed on the web of the point rail 1, the rail bottom side surface of the point rail 1 is abutted against the bottom side surface of the fixed rail support 8 of the point rail 1, the bottom of the fixed rail support 8 of the point rail 1 is also fixed with a rigid clip 6, and the rigid clip 6 is pressed on the rail bottom and the bottom of the point rail 1 at the same time. The point rail 1 is formed by cutting and reforming a rail with the same model as the stock rail 2, the height of the rail is the same as that of the stock rail 2, the stock rail 2 is contacted with the joint surface of the point rail 1, the rail head part of the rail is contacted with the joint surface of the rail head part through a guide curve, the rail bottom of the stock rail 2 is also contacted with the rail bottom of the point rail 1, and the joint surface contacted with the rail bottom of the rail head part is also provided with the guide curve. When the stock rail 2 stretches, not only the rail head but also the rail bottom is subjected to outward acting force caused by stretching, and the upper end and the lower end are stressed, so that the obvious effect of outwards inclining and twisting the rail head due to the stress of a single position can be avoided.
The fixed rail brace 8 further comprises a fixed rail brace 8 (shown in fig. 4) of the stock rail 2, the supporting portion of the fixed rail brace 8 of the stock rail 2 is supported on the rail web side surface of the stock rail 2, the guide rail brace 7 is arranged on the outer side of the stock rail 2, the bottom of the guide rail brace 7 is fixed on the backing plate assembly through a bolt-fixed elastic clamp, and the supporting portion of the guide rail brace 7 is supported on the rail web side surface of the stock rail 2.
The structure effectively fixes the switch rail 1, effectively clamps the stock rail 2, inhibits the outward deformation and outward tilting degree of the stock rail 2 in the telescoping process, effectively enhances the fixing strength of the fixed rail support 8 and the backing plate assembly by the welding fixing structure, reduces the lateral extension distance of the fixed rail support 8, omits the fixing structures such as an iron seat, a rail support bolt and the like, further simplifies the fixing structure of the fixed rail support 8, and avoids occupying more space.
The support part of the guide rail support 7 is provided with three protruding support points for supporting the stock rail 2, wherein the protruding support points comprise an upper protruding support point and a lower protruding support point which respectively correspond to the upper end and the lower end of the rail web, and further comprise a bottom protruding support point which corresponds to the upper part of the extending part of the rail bottom, the upper protruding support point and the lower protruding support point are in butt joint on the rail web under normal conditions, and a gap is reserved between the bottom protruding support point and the rail bottom. A positioning area is reserved between the outer side of the bottom of the guide rail support 7 and the corresponding side of the backing plate assembly, a positioning plate 9 is fixed on the positioning area, and one side, close to the stock rail 2, of the positioning plate 9 is welded with the outer side of the bottom of the guide rail support 7.
The elastic clamp is fixed on the base plate assembly through a square neck anti-rotation bolt, a T-shaped groove matched with a square neck structure of the square neck anti-rotation bolt is formed in the base plate assembly, and the trapezoid groove is arranged along the transverse direction. The side that the elastic clamp is close to the stock rail 2 is equipped with the clamp portion of pressing in the bottom of guide rail brace 7 and opposite side bottom surface is equipped with the protrusion structure 62 of pressing in on the backing plate subassembly, the clamp portion is equipped with step structure 61, the bottom of guide rail brace 7 is equipped with the elastic clamp mounting hole, elastic clamp mounting hole one side be equipped with step structure 61 cooperation butt's step groove and opposite side lateral wall and the side that the elastic clamp corresponds leave the clearance, the distance that the elastic clamp kept away from stock rail 2 one side to the top of protrusion structure 62 is less than the distance that the pore wall of elastic clamp upper bolt mounting hole was to the top of protrusion structure 62.
The structure is used for installing the guide rail support 7, utilizes the bottom bulge support point to extrude and limit the rail bottom to the inclined lower side when outwards moving, not only allows the rail bottom of the stock rail 2 to slightly move outwards in a safety range when stretching, but also effectively supports the key positions of the rail web and the rail bottom of the stock rail 2 after moving outwards for a certain distance, and further reduces the outward tilting distortion effect of the rail head of the stock rail 2 by combining with the improvement of the structure of the point rail 1. The contact surface between the guide rail support 7 and the rail web is reduced, but the influence on the supporting effect is small, so that the risk caused by excessive camber can be avoided while the expansion resistance of the bending part is reduced, and the good homing of the stock rail 2 during shrinkage is facilitated. Similarly, the elastic clamp also limits and supports the bottom of the guide rail support 7, when the guide rail support 7 is outwards inclined under the action of the stock rail 2, the elastic clamp compresses the bottom of the guide rail support 7, the elastic clamp can slightly elastically rotate by taking the protruding structure 62 as a fulcrum to absorb outward pressure, the acting force of the elastic clamp on the guide rail support 7 can effectively drive the guide rail support 7 to return to the original position when the acting force is contracted, and the positioning plate 9 also plays a role of blocking the bottom of the guide rail support 7 after welding, so that the outward acting force generated by the stock rail 2 is mainly converted into elastic torsion of the guide rail support 7 which can return to the original position, rather than horizontal sliding which can cause abrasion and is difficult to return to the original position. The structure improves the service lives of the guide rail support 7 and the stock rail 2, and can still keep the telescopic regulator to meet the safety requirement under the condition that the lateral extension distance of the guide rail support 7 is reduced. The telescopic regulator can meet the requirements of regulation effect and safety reliability with smaller width by combining the structure improvement of the fixed rail support 8 and the switch rail 1, and is suitable for the rail bearing groove with limited improvement space.
The cover plate structure comprises a supporting seat 15 vertically welded on the continuous large iron plate 3 and a cover plate fixed at the top of the supporting seat 15 through bolts, the cover plate comprises a working edge cover plate 14 and a non-working edge cover plate 13, the non-working edge cover plate 13 is arranged on one side, close to the outside, of the telescopic regulator, is a horizontal plate I, the working edge cover plate 14 comprises a horizontal plate II and an L-shaped plate, a reserved space for a wheel rim to pass through is reserved from the horizontal plate II to the working edge, the vertical part of the L-shaped plate is welded at the bottom of the horizontal plate II, and the horizontal part extends from the lower part of the reserved space to be abutted to the bottom surface of a rail head of the corresponding point rail 1 or the basic rail 2. Because the hybrid pavement through which the train and the automobile can pass before transformation, the cover plate structure can support the automobile when the automobile passes through the cover plate, the operation of the telescopic regulator is not affected, and meanwhile, a reserved space is reserved for the train to pass normally. In view of the vertical wear of the rail and the false rim effect of the wheels, the height of the non-working edge cover 13 is lower than the tread of the stock rail 2, for example, the non-working edge pedal is set 20mm lower than the tread of the stock rail 2, and the working edge pedal is set flush with the tread of the stock rail 2. Considering that the rim can move left and right for a certain distance during operation, the transverse horizontal distance of the corresponding reserved space is set to be 65mm, so that the operation of the rim on the working edge is not affected.
The waterproof sealing strip 5I is arranged between the cover plate and the side wall of the opening of the rail bearing groove, the waterproof sealing strip 5 II is arranged between the L-shaped plate and the bottom surface of the rail head, the waterproof sealing strip 5 III is arranged between the non-working edge cover plate 13 and the rail head of the stock rail 2, and the elastic compressible stroke of the waterproof sealing strip 5 II and the waterproof sealing strip 5 III is matched with the transverse offset distance generated in the expansion process of the rail head of the stock rail 2. The fastener system 4 leaves little room to the side walls of the rail groove for the placement of the drain pipe 16. Each waterproof sealing strip 5 including waterproof sealing strip 5 one, waterproof sealing strip 5 two and waterproof sealing strip 5 three all adopts polyurethane sealant to make, can reduce the inside inflow of this flexible regulator, plays waterproof protection effect, and fastener system 4 both sides are located to drain pipe 16, then the drain pipe 16 that the water was lower than the backing plate subassembly from both sides position is discharged rapidly, avoids the adverse effect to flexible regulator. Since the bending portion of the stock rail 2, particularly the rail head portion, moves outwardly during the telescoping process, a sufficient waterproof effect and normal use of the telescoping adjuster can be ensured by the waterproof seal 5 having a sufficient elastic compression stroke.
The invention also provides a reconstruction construction method for reconstructing the small-radius I-shaped point rail telescopic regulator, which comprises the following steps.
Step one, cleaning the periphery pavement of the original track. And (3) damaging and clearing pavement at two sides of the track in a track section area which is prepared for setting the telescopic regulator until the pavement is cleared to a part which is difficult to damage due to the arrangement of reinforced concrete, and exposing the bed surface of the track bed 17 at the bottom of the track bearing groove after clearing.
And step two, cutting off the original steel rail, and removing the sleeper 18 part protruding out of the bed surface of the ballast bed 17. And cutting the original steel rail left in the cleaned area, and disassembling and cleaning the corresponding steel rail mounting structure. The rail normally laid will for the most part be provided with sleepers 18, which sleepers 18 have a part higher than the bed surface of the ballast bed 17, in which case only the part of the sleeper 18 protruding from the bed surface of the ballast bed 17 is cut and removed.
And thirdly, integrally dropping the preassembled part of the telescopic regulator into the rail bearing groove. The preassembled part of the telescopic regulator comprises a continuous iron plate 3, a backing plate assembly which has been preassembled to the continuous iron plate 3 in the factory building, a stock rail 2, a point rail 1, a guide rail support 7, a fixed rail support 8, a locating plate 9 and a fastener system 4. Because these parts are assembled and detected in advance in the factory building and are integrally dropped into the rail bearing groove after being assembled on the continuous large iron plate 3, the telescopic regulator can be effectively ensured to meet the set requirements of vertical curves and the width of the telescopic regulator.
When assembling the preassembled parts, the stock rail 2 is arranged after the point rail 1 is fixed, and the stock rail 2 is arranged
The bottom surface of the rail bottom of the stock rail 2, the upper protruding supporting point and the lower protruding supporting point are coated with lubricating grease after the assembly of the stock rail 2 and the guide rail supporting point 7 is completed, the positioning plate 9 is placed on the backing plate assembly after the assembly of the stock rail 2 and the guide rail supporting point 7, the positioning plate 9 is fixed through bolts and is ensured to abut against the side surface of the bottom of the guide rail supporting point 7, and then the positioning plate 9 is welded and fixed with the bottom of the guide rail supporting point 7.
And fourthly, drilling holes on the ballast bed 17 through holes arranged on the continuous large bottom plate, and anchoring the implanted spikes 11. The hole site locates between the adjacent backing plate subassembly, and with screw spike 11, insulating sleeve, packing ring and cap nut set up the completion spike 11 anchor after punching.
And fifthly, filling high-strength epoxy resin-based mortar 12 into the bottom of the continuous large bottom plate. Thereby realizing the leveling of the bottom of the continuous large iron plate 3 and enabling the continuous large iron plate 3 to be stably supported. The top of the flat continuous large iron plate 3 controls the requirement of the stock rail 2 and the switch rail 1 on the flat continuous large iron plate on the vertical curve through the height adjusting pad 10 to recheck the telescopic regulator. And meanwhile, the thickness of the high-strength epoxy resin-based mortar 12 is controlled, so that the alignment of the stock rail 2 and the switch rail 1 with the original rail reserved at the two ends of the connecting telescopic regulator is ensured.
And step six, connecting the steel rails. The cut end of the original rail is transformed into a freezing joint, the stock rail 2 and the switch rail 1 on the telescopic regulator are adopted as the freezing joint, and the original rail is fixedly connected with the stock rail 2 or the switch rail 1 through the freezing joint.
Step seven, a drain pipe 16 and a cover plate structure are provided. A plurality of supporting seats 15 are welded on the continuous large iron plate 3, the supporting seats 15 are arranged between adjacent backing plate assemblies, drain pipes 16 are arranged on the two sides of the continuous large iron plate 3, a cover plate provided with a sealing strip in a mode is fixed at the top of the supporting seats 15 through bolts, the fact that the first waterproof sealing strip 5 presses the side wall of an opening of a rail bearing groove is guaranteed, the second waterproof sealing strip 5 presses the bottom surface of a rail head of a point rail 1 or a rail head of a stock rail 2 on the corresponding side, and the third waterproof sealing strip 5 presses the rail head of the stock rail 2 on the corresponding side. Therefore, the waterproof and drainage structure not only can realize better waterproof and drainage effects, is convenient to construct and provides enough support for equipment such as automobiles running on the rail bearing groove, but also can inspect and maintain the internal structure only by taking down the cover plate during maintenance, and is convenient to maintain.
By adopting the reconstruction construction method, the preassembled part of the telescopic regulator is assembled into a whole through the continuous large iron plate 3 and then is placed into the rail bearing groove, so that the construction time is greatly reduced, and the construction requirement of shorter skylight period is met. Meanwhile, the high-strength epoxy resin-based mortar 12 is poured into the bottom of the continuous large iron plate 3 for leveling, so that the effect of stably supporting the large iron plate can be realized without carefully modifying the bed surface of the ballast bed 17, and the defects that the vertical curve of the telescopic regulator is difficult to control and the time consumption is more caused by independently arranging the backing plate component are avoided. The cover plate structure is installed and constructed after being placed into the preassembled part, so that the drain pipe 16 is convenient to set, the setting effect of the waterproof sealing strip 5 can be effectively guaranteed, and the proper waterproof sealing strip 5 can be replaced in time when the setting of the waterproof sealing strip 5 is influenced due to overlarge or overlarge gap. In summary, the improved telescopic regulator structure is combined with the reconstruction construction method, so that the problems that how to simultaneously meet the requirements of safety and regulation functions when the space is limited are solved, the reconstruction construction process on site is simplified, the construction efficiency is greatly improved, the construction can be completed by utilizing a very short skylight period, and the effects of effective waterproof drainage and convenience in maintenance can be realized on the premise that the operation of the telescopic regulator is ensured after the construction.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is capable of being modified or applied to other applications without modification, as long as various insubstantial modifications of the inventive concept and technical solutions are adopted, all within the scope of the invention.
Claims (7)
1. The utility model provides a small radius I shape switch rail expansion and contraction adjustment ware of scene transformation which characterized in that: the road surface on the reconstruction site is provided with a rail bearing groove for arranging rails, a track bed (17) at the bottom of the rail bearing groove is anchored with the continuous large iron plate (3) extending along the track bed (17), a plurality of the base plate assemblies and the cover plate structures are arranged along the continuous large iron plate (3), the base plate assemblies are fixed on the continuous large iron plate (3) through the fastener system (4), the cover plate structures are fixed on the continuous large iron plate (3) to cover the region from the rail head of a stock rail (2) or a point rail (1) to the edge of the rail bearing groove, the base plate assemblies are fixed with guide rail supports (7), fixed rail supports (8), the stock rail (2) and the point rail (1), the base plate assemblies comprise sliding table base plates and height adjusting pads (10), the height adjusting pads (10) are arranged between the base plates and the continuous large iron plate (3), and the height adjusting pads (10) in the base plate assemblies are arranged at corresponding set curves according to the vertical positions;
the guide rail support (7) is arranged on the outer side of the stock rail (2), the bottom of the guide rail support (7) is fixed on the backing plate assembly through an elastic clamp fixed by a bolt, and the supporting part of the guide rail support (7) is supported on the side face of the rail web of the stock rail (2); the support part of the guide rail support (7) is provided with three protruding support points for supporting the stock rail (2), wherein the protruding support points comprise an upper protruding support point and a lower protruding support point which respectively correspond to the upper end and the lower end of the rail web, and also comprise a bottom protruding support point which corresponds to the upper part of the extending part of the rail bottom, the upper protruding support point and the lower protruding support point are propped against the rail web under the normal condition, and a gap is reserved between the bottom protruding support point and the rail bottom;
the fixed rail brace (8) comprises a fixed rail brace (8) of the point rail (1), the bottom of the fixed rail brace (8) is welded on the backing plate assembly, the supporting part of the fixed rail brace (8) of the point rail (1) is fixed on the rail web of the point rail (1), the rail bottom side surface of the point rail (1) is abutted against the bottom side surface of the fixed rail brace (8) of the point rail (1), a rigid clip (6) is further fixed on the bottom of the fixed rail brace (8) of the point rail (1), and the rigid clip (6) is pressed on the rail bottom and the bottom of the point rail (1) at the same time;
the elastic clamp is fixed on the base plate assembly through a square neck anti-rotation bolt, a T-shaped groove matched with a square neck structure of the square neck anti-rotation bolt is formed in the base plate assembly, the T-shaped groove is arranged along the transverse direction, a pressing part pressed on the bottom of the guide rail support (7) is arranged on one side of the elastic clamp, which is close to the base rail (2), a protruding structure (62) pressed on the base plate assembly is arranged on the bottom of the other side of the elastic clamp, a step structure (61) is arranged on the pressing part, an elastic clamp mounting hole is formed in the bottom of the guide rail support (7), a step groove matched and abutted with the step structure (61) is formed in one side of the elastic clamp mounting hole, a gap is reserved between the side wall of the other side of the elastic clamp, which is far away from the base rail (2), and the top of the protruding structure (62) is smaller than the distance from the hole wall of the bolt mounting hole on the elastic clamp to the top of the protruding structure (62);
the cover plate structure comprises a supporting seat (15) vertically welded on the continuous large iron plate (3) and a cover plate fixed at the top of the supporting seat (15) through bolts, the cover plate comprises a working edge cover plate (14) and a non-working edge cover plate (13), the non-working edge cover plate (13) is arranged on the outer side of the telescopic regulator to be a horizontal plate I, the working edge cover plate (14) comprises a horizontal plate II and an L-shaped plate, a reserved space for a wheel rim to pass through is reserved between the horizontal plate II and the working edge, the vertical part of the L-shaped plate is welded at the bottom of the horizontal plate II, and the horizontal part extends from the lower part of the reserved space to be abutted to the rail head bottom surface of a corresponding point rail (1) or a basic rail (2).
2. The on-site retrofitted small radius i-shaped point rail telescoping governor of claim 1 wherein: waterproof sealing strips (5) I are arranged between the cover plate and the side wall of the opening of the rail bearing groove, waterproof sealing strips (5) II are arranged between the L-shaped plate and the bottom surface of the rail head, waterproof sealing strips (5) III are arranged between the non-working edge cover plate (13) and the rail head of the stock rail (2), and the elastic compressible stroke of the waterproof sealing strips (5) II and the waterproof sealing strips (5) III are matched with the transverse offset distance generated by the rail head of the stock rail (2) in the telescoping process.
3. A field-retrofitted small-radius i-shaped point rail telescopic governor according to claim 1 or 2 and characterized in that: the switch rail (1) is formed by cutting and reforming a rail with the same model as the stock rail (2), the height of the switch rail is the same as that of the stock rail (2), and the abutting joint surface of the rail bottom of the stock rail (2) and the rail bottom of the switch rail (1) is the same as that of the rail head part of the stock rail and the rail head part of the switch rail.
4. A method of retrofitting a small radius i-shaped point rail telescoping adjuster according to claim 3, comprising: comprises the following steps:
step one, cleaning the peripheral pavement of an original track;
step two, cutting off the original steel rail, and removing a sleeper (18) part protruding out of the bed surface of the ballast bed (17);
step three, the preassembled part of the telescopic regulator is integrally dropped into the rail bearing groove;
the preassembled part of the telescopic regulator comprises a continuous large iron plate (3), a backing plate assembly, a stock rail (2), a point rail (1), a guide rail support (7), a fixed rail support (8), a positioning plate (9) and a fastener system (4), which are already assembled on the continuous large iron plate (3) in advance in a factory building;
drilling holes on a ballast bed (17) through holes arranged on the continuous large bottom plate, and implanting spikes (11) for anchoring;
step five, pouring high-strength epoxy resin-based mortar (12) into the bottom of the continuous large bottom plate;
step six, connecting steel rails;
and step seven, arranging a drain pipe (16) and a cover plate structure.
5. The reconstruction method for the small-radius I-shaped point rail expansion adjuster according to claim 4, which is characterized in that: when the preassembled part is assembled, the rail bottom surface of the stock rail (2), the upper protruding supporting point and the lower protruding supporting point are coated with lubricating grease after the assembly of the stock rail (2) and the guide rail support (7), the positioning plate (9) is placed on the backing plate assembly after the assembly of the stock rail (2) and the guide rail support (7), the positioning plate (9) is fixedly connected with the bottom side surface of the guide rail support (7) through bolts, and then the positioning plate (9) is fixedly welded with the bottom of the guide rail support (7).
6. The reconstruction method for the small-radius I-shaped point rail expansion adjuster according to claim 5, which is characterized in that: in the first step, the bed surface of a ballast bed (17) at the bottom of the rail bearing groove is exposed after the cleaning; in the second step, a part of the sleeper (18) is higher than the bed surface of the ballast bed (17), and in the case, only the sleeper (18) part protruding out of the bed surface of the ballast bed (17) is cut and removed; in the fifth step, leveling of the bottom of the continuous large iron plate (3) is achieved, meanwhile, the thickness of the high-strength epoxy resin-based mortar (12) is controlled, and the alignment of the stock rail (2) and the switch rail (1) with original steel rails reserved at two ends of the connecting telescopic regulator is guaranteed.
7. The reconstruction method for the small-radius I-shaped point rail expansion adjuster according to claim 4, which is characterized in that: in the step seven, a plurality of supporting seats (15) are welded on the continuous large iron plate (3), the supporting seats (15) are arranged between the adjacent backing plate assemblies, then water draining pipes (16) are arranged on the two sides of the continuous large iron plate (3), a cover plate provided with waterproof sealing strips is fixed at the top of the supporting seats (15) through bolts, the fact that the waterproof sealing strips (5) are tightly pressed against the side wall of the opening of the rail bearing groove is guaranteed, the waterproof sealing strips (5) are tightly pressed against the rail head bottom surface of the point rail (1) or the stock rail (2) on the corresponding side, and the waterproof sealing strips (5) are tightly pressed against the rail head on the corresponding side of the stock rail (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111092605.4A CN113737579B (en) | 2021-09-17 | 2021-09-17 | Small-radius I-shaped switch rail telescopic regulator modified on site and modification construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111092605.4A CN113737579B (en) | 2021-09-17 | 2021-09-17 | Small-radius I-shaped switch rail telescopic regulator modified on site and modification construction method thereof |
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| Publication Number | Publication Date |
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| CN113737579A CN113737579A (en) | 2021-12-03 |
| CN113737579B true CN113737579B (en) | 2023-07-21 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282569A (en) * | 1992-08-11 | 1994-02-01 | Kiyota Railway Engineering Co., Ltd. | Railroad crossing structure |
| CN104499383A (en) * | 2014-12-31 | 2015-04-08 | 成都市新筑路桥机械股份有限公司 | Channel rail expansion adjustor |
| CN204849494U (en) * | 2015-07-29 | 2015-12-09 | 中国铁道科学研究院铁道建筑研究所 | Rail expansion device suitable for curve and sharp location |
| CN105155364A (en) * | 2015-09-30 | 2015-12-16 | 成都市新筑路桥机械股份有限公司 | Embedded track structure used in tunnel |
| CN105507094A (en) * | 2015-12-18 | 2016-04-20 | 成都市新筑路桥机械股份有限公司 | Embedded rail replacing method |
| CN206721574U (en) * | 2017-04-24 | 2017-12-08 | 成都市新筑路桥机械股份有限公司 | A kind of new embedded tracks structure |
| CN108286210B (en) * | 2018-03-16 | 2019-05-07 | 成都市新筑路桥机械股份有限公司 | A kind of rapid constructing method of embedded railway points system |
| CN108286211A (en) * | 2018-03-16 | 2018-07-17 | 成都市新筑路桥机械股份有限公司 | A kind of embedded railway points system |
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