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WO2021035846A1 - Ensemble de fixation pourvu d'un épaulement de retenue de traverse s'utilisant dans une voie sans ballast - Google Patents

Ensemble de fixation pourvu d'un épaulement de retenue de traverse s'utilisant dans une voie sans ballast Download PDF

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Publication number
WO2021035846A1
WO2021035846A1 PCT/CN2019/107092 CN2019107092W WO2021035846A1 WO 2021035846 A1 WO2021035846 A1 WO 2021035846A1 CN 2019107092 W CN2019107092 W CN 2019107092W WO 2021035846 A1 WO2021035846 A1 WO 2021035846A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeper
height
pad
iron
backing plate
Prior art date
Application number
PCT/CN2019/107092
Other languages
English (en)
Chinese (zh)
Inventor
肖俊恒
张松琦
方杭伟
李子睿
张欢
李彦山
闫子权
张远庆
于毫勇
Original Assignee
北京铁科首钢轨道技术股份有限公司
中国铁道科学研究院集团有限公司铁道建筑研究所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京铁科首钢轨道技术股份有限公司, 中国铁道科学研究院集团有限公司铁道建筑研究所 filed Critical 北京铁科首钢轨道技术股份有限公司
Publication of WO2021035846A1 publication Critical patent/WO2021035846A1/fr

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Classifications

    • 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
    • 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
    • E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
    • E01B9/44—Fastening the rail on the tie-plate
    • E01B9/46—Fastening the rail on the tie-plate by clamps
    • E01B9/48—Fastening the rail on the tie-plate by clamps by resilient steel clips
    • 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
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair

Definitions

  • the utility model relates to a fastener assembly with a sleeper shoulder used in a ballastless track.
  • Track fasteners are a common component of railway tracks. It is well known that in order to improve the comfort of train operations, ballastless tracks can only rely on track fasteners to provide elasticity. Therefore, ballastless track fasteners should be more effective than ballasted track fastener systems. Good elasticity, but the elasticity cannot be increased indefinitely, otherwise it will cause the rail to overturn when the train passes, which will significantly increase the dynamic gauge and affect the smooth running of the train. If the rigidity of the existing track fasteners is reduced and the elasticity is increased, the rails will roll over and affect the safe operation of the train.
  • the fastener system not only has good insulation performance under dry conditions, but also should have good insulation performance under heavy rainfall. This requires that the fastener system has a higher insulation performance in the structure.
  • the metal gauge baffle used in the existing shoulder rail fasteners and the spring bars directly buckle the rail, which greatly reduces the insulation performance of the rail fastener.
  • ballastless track may encounter some special conditions during the operation of the ballastless track, such as post-construction settlement of the roadbed, creep and arching of concrete long-span bridges, settlement and deformation of tunnel foundations. Diseases such as low-temperature frost heave, resulting in irregularities in the structure of the ballastless track. Because the ballastless track cannot be started, the rapid adjustment of the height and left and right positions of the rail can only be solved by fasteners. In order to restore the smoothness of the line in a short time and ensure the safety and comfort of train operation, it is urgent It is necessary to increase the rail height and left and right position adjustments on the basis of the existing fastener system of the existing high-speed railway.
  • the present application provides a fastener assembly for a ballastless track with sleeper shoulders in consideration of comfort, safety, insulation, and adjustable rail spacing and rail height positions.
  • the purpose of the utility model is to provide a fastener assembly with a sleeper shoulder in a ballastless track.
  • the fastener assembly can be used to adjust the gauge, adjust the height of the steel rail and have a good insulation effect.
  • the present invention provides a fastener assembly for a ballastless track with sleeper shoulders.
  • the fastener assembly includes: a top-down installation on the bottom surface of the rail and the sleeper-supporting groove
  • the sleeper supporting rail groove is arranged on the top of the sleeper,
  • the two sides of the sleeper-supporting groove extend upwardly and obliquely to form sleeper shoulders, and both ends of the second height-adjusting pad rise up and form inner sides that are parallel and fit to the sleeper shoulders.
  • the first extension part of the first height-adjusting pad is raised up and formed with a second extension part that is parallel and fits the inner surface of the first extension part; the second extension part and the iron pad
  • a gauge baffle is arranged between the plates, and the inner and outer sides of the gauge baffle are respectively pressed against the side of the iron pad and the inner side of the second extension, and are located on the bottom of the rail.
  • An insulating block is fastened on the surface and the side surface.
  • One end of the elastic strip is fastened on the top surface of the insulation block, and the other end is fastened on the working surface of the gauge baffle; one end of the spiral spike is passed vertically downward in sequence After passing through the gap in the middle of the spring bar, the iron backing plate, the lower backing plate of the iron plate, the first height-adjusting backing plate and the second height-adjusting backing plate are screwed to the sleeper, and the flat washer is located on the spring bar and the spiral
  • the cap ends of the road stud are sleeved on the spiral road stud.
  • the position in the sleeper supporting rail groove that is connected to the sleeper shoulder is recessed downward to form a first strip-shaped groove that penetrates back and forth in a direction parallel to the length of the rail, and the second height-adjusting pad is connected with
  • the corresponding position of the first strip-shaped groove protrudes downward and is formed with a first convex part that can fit to the inner wall of the first strip-shaped groove;
  • the position where the two extensions are connected is recessed downward to form a second strip-shaped groove that penetrates back and forth in a direction parallel to the length of the rail, and the bottom of the gauge baffle is convex downward at a position corresponding to the second strip-shaped groove And a second convex part that can fit and fit on the inner wall of the second strip groove is formed.
  • the pad under the rail is a rubber pad or a composite pad
  • the iron plate is a polyethylene pad or a foamed polyurethane material pad
  • the composite pad is composed of a stainless steel plate and a second It is composed of three rubber backing plates, and the stainless steel plate is bonded to the upper surface of the third rubber backing plate through vulcanization.
  • the upper part of the iron backing plate is provided with a protruding iron backing shoulder, and the inner side of the iron backing shoulder abuts against the outer side of the insulating block; the outer side of the insulating block is formed with a The side grooves where the shoulders of the iron backing plate fit together, and the inner side of the shoulders of the iron backing plate is clamped in the side grooves.
  • the gauge baffle and the insulating block are both made of engineering plastic; wherein, the engineering plastic is glass fiber reinforced polyamide.
  • the inner surface of the gauge baffle is formed with a vertical surface that matches with the side of the iron backing plate, and a vertical baffle is fixedly connected to the front and rear ends of the vertical surface.
  • the front and rear edges of the iron backing plate and the lower backing plate of the iron plate abut between the two vertical baffles.
  • the working surface of the gauge baffle is upwardly formed with a spring bar shoulder, and the inner side of the spring bar shoulder is formed with a shallow groove for engaging the outer side of the spring bar.
  • a first side ear and a second side ear are respectively provided on the bottom surface of the under-rail pad in the extension direction of the rail, between the under-rail pad and the iron pad
  • a trimming backing plate is also provided. The front and rear ends of the trimming backing plate abut between the first ear and the second ear, and the inner sides of the first ear and the second ear are tightly attached to each other. On the side of the iron backing plate.
  • the iron backing plate is respectively formed on both sides of the under-rail backing plate with at least two stoppers for pressing against the side of the under-rail backing plate and the fine-adjusting backing plate;
  • the sleeper is embedded
  • the iron backing plate, the lower backing plate of the iron plate, the first height-adjusting backing plate and the second height-adjusting backing plate are respectively provided with a first through hole, a second through hole, and a second through hole corresponding to the spiral spike.
  • the first height-adjusting pad is divided into a second left half and a second right half that are bilaterally symmetrical.
  • one end of the spiral spike in the present invention passes vertically and downwards sequentially through the gap in the middle of the elastic strip, the iron backing plate, the lower backing plate of the iron plate, and the detachable first height-adjusting backing plate And the second height-adjusting pad are screwed to the sleeper, and the flat washer is located between the elastic strip and the cap end of the spiral spike and is sleeved on the spiral spike, that is, the elastic
  • the bar is crimped on the insulating block and the gauge baffle, the gauge baffle presses the iron block to limit the position, and the rail is raised by the first height-adjusting pad and the second height-adjusting pad.
  • the first extension part The top end of the rail should be higher than the top of the sleeper shoulder, and the top end of the second extension should be higher than the top of the first extension.
  • the pressure on the rail passes through the insulating block, iron backing plate, and gauge baffle in sequence on the one hand.
  • the second extension part and the first extension part are transmitted to the sleeper shoulder decomposition, on the other hand, the second extension part and the first extension part are transmitted to the sleeper shoulder decomposition through the elastic strip. Therefore, the fastener assembly exists in two states. One is to remove the first height-adjusting pad and the second height-adjusting pad to lower the height of the rail; the second is to install the first height-adjusting pad and the second height-adjusting pad.
  • the second height-adjusting pad when the rail passes through the first height-adjusting pad and/or the second height-adjusting pad and is raised within a certain range, it does not affect the decomposition of its force.
  • the under-rail pad and the insulating block play a role of insulation on the one hand, and a shock absorption role on the other.
  • the track spacing can be fine-tuned by replacing the insulating blocks of different sizes.
  • Figure 1 is an overall assembly diagram of a preferred embodiment when the fastener assembly is not adjusted in height
  • Figure 2 is an overall assembly diagram of a preferred embodiment when the fastener assembly is adjusted in height
  • Figure 3 is a cross-sectional view of an overall assembly view of a preferred embodiment when the fastener assembly is adjusted in height;
  • FIG. 4 is a schematic diagram of the overall structure of a preferred embodiment of the first height-adjusting pad
  • FIG. 5 is a schematic diagram of the overall structure of a preferred embodiment of the second height-adjusting pad
  • Fig. 6 is a schematic diagram of the overall structure of a preferred embodiment of an insulating block
  • Figure 7 is a schematic diagram of the overall structure of a preferred embodiment of the screw sleeve
  • FIG. 8 is a schematic diagram of the overall structure of a preferred embodiment of the iron plate lower backing plate
  • Figure 9 is a schematic diagram of the overall structure of a preferred embodiment of the under-rail pad.
  • Figure 10 is a schematic diagram of the overall structure of a preferred embodiment of the gauge baffle
  • Figure 11 is a schematic diagram of the overall structure of a preferred embodiment of the iron backing plate
  • Fig. 12 is a schematic diagram of the overall structure of a preferred embodiment of a spring bar.
  • Second side ear 30 Vertical baffle
  • the front-rear direction refers to the extending direction of the rail 16
  • the left-right direction refers to the left and right directions of the rail 16.
  • the fastener assembly includes: the bottom surface of the rail bottom 17 of the rail 16 and the upper surface of the sleeper rail groove from top to bottom.
  • the sleeper supporting rail groove is arranged in the sleeper 1, and the two sides of the sleeper supporting rail groove extend outwardly obliquely upward to form a sleeper shoulder 2.
  • the two ends of the second height-adjusting pad 4 rise up and are formed parallel to and fit the The first extension portion 24 on the inner surface of the sleeper shoulder 2, and both ends of the first height-adjusting pad 3 rise up and form a second extension portion that is parallel and fits the inner surface of the first extension portion 24 21; between the second extension 21 and the iron backing plate 8 is provided with a gauge baffle 7, the inner and outer sides of the gauge baffle 7 are respectively pressed against the side and the iron backing plate 8 On the inner side of the second extension part 21, an insulating block 10 is fastened on the upper surface and the side surface of the rail bottom 17, one end of the elastic strip 11 is fastened on the top surface of the insulation block 10, and the other end is fastened on the top surface of the insulation block 10.
  • one end of the spiral spike 12 passes vertically downwards sequentially through the gap in the middle of the elastic strip 11, the iron backing plate 8, the iron plate lower backing plate 9, and the first height-adjusting pad
  • the plate 3 and the second height-adjusting pad 4 are screwed to the sleeper 1, and a flat washer 13 is located between the elastic strip 11 and the cap end of the spiral spike 12 and is sleeved on the spiral spike 12 .
  • one end of the spiral spike 12 vertically downwards sequentially passes through the gap in the middle of the elastic strip 11, the iron backing plate 8, the iron plate lower backing plate 9 and the detachable first height adjustment
  • the backing plate 3 and the second height-adjusting backing plate 4 are screwed to the sleeper 1, and a flat washer 13 is located between the elastic strip 11 and the cap end of the spiral spike 12 and is sleeved on the spiral spike 12 Up, that is, the elastic bar 11 is pressed on the insulating block 10 and the gauge baffle 7 through the spiral spike 12, and the gauge baffle 7 presses and limits the iron block, and passes through the first height adjustment pad 3 and the second adjustment pad
  • the high pad 4 pads up the rail 16, wherein the top of the first extension 24 should be higher than the top of the sleeper shoulder 2, and the top of the second extension 21 should be higher than the top of the first extension 24.
  • the pressure on the 16 is transmitted to the sleeper shoulder 2 through the insulating block 10, the iron backing plate 8, the gauge baffle 7, the second extension 21 and the first extension 24 in sequence on the one hand, and is decomposed by the elastic on the other hand.
  • the strip 11 is transferred to the gauge baffle 7, the second extension 21 and the first extension 24 are transferred to the sleeper shoulder 2 to disassemble. Therefore, the fastener assembly exists in two states. One is to remove the first height-adjusting pad 3 and the second height-adjusting pad 4. At this time, the thickness of the sleeper shoulder 2 can be 6-9mm.
  • the under-rail pad 15 and the insulating block 10 play a role of insulation on the one hand, and a shock absorption role on the other hand.
  • the track spacing can be fine-tuned by replacing the insulating block 10 of different sizes.
  • the insulating block 10 is an inverted L shape as shown in FIG. 5.
  • the position in the sleeper supporting rail groove connected to the sleeper shoulder 2 is recessed downward to form a parallel edge
  • the first strip groove 5 penetrates back and forth in the length direction of the rail 16, and the position corresponding to the first strip groove 5 on the second height-adjusting pad 4 protrudes downward and is formed to fit snugly
  • the first convex portion on the inner wall of the first strip groove 5; the position of the first height-adjusting pad 3 connected to the second extension portion 21 is recessed downwardly and formed along the length direction parallel to the rail 16
  • the second strip groove 6 penetrates back and forth.
  • the bottom of the gauge baffle 7 and the position corresponding to the second strip groove 6 protrude downward and are formed to fit the second strip
  • the under-rail pad 15 can be selected in a wide range in the field, and should have better insulation.
  • the under-rail pad 15 is A rubber backing plate or a composite backing plate
  • the iron plate lower backing plate 9 is a polyethylene backing plate or a foamed polyurethane material backing plate; wherein, the composite backing plate is composed of a stainless steel plate and a third rubber backing plate, and the stainless steel The plate is bonded to the upper surface of the third rubber pad through vulcanization.
  • Specific measures for lowering on the basis of removing the first height-adjusting pad 3 and the second height-adjusting pad 4, replace the iron pad with a lower thickness.
  • the plate 9 uses a polyethylene backing plate. According to the needs of the amount of rail reduction, the thickness of the cushioning backing plate under the iron backing plate is 1-3mm. Therefore, the steel rail can be lowered by 5-10mm.
  • the iron plate lower pad 9 is used as a pad made of foamed polyurethane material when used for height adjustment.
  • the upper part of the iron backing plate 8 is provided with a protruding iron backing shoulder 33, and the inner side of the iron backing shoulder 33 abuts against the outer side of the insulating block 10;
  • the outer side of the insulating block 10 is formed with a side groove 26 that fits with the iron backing shoulder 33, and the inner side of the iron backing shoulder 33 is engaged in the side groove 26.
  • the lateral load of the train transmitted from the rail 16 is first borne by the iron backing plate shoulder 33, and then the lateral force is transmitted to the gauge baffle 7 through the iron backing plate 8, and finally the lateral force is transmitted to the sleeper shoulder 2, thereby reducing the position of the horizontal load, ensuring that the sleeper shoulder 2 bears the horizontal horizontal force, and making the rail 16 structure more stable.
  • the provision of the side groove 26 can effectively limit the position of the insulating block 10 and prevent it from falling off toward the extension direction of the rail 16.
  • both the gauge baffle 7 and the insulating block 10 are made of engineering plastics; wherein, the engineering The plastic is glass fiber reinforced polyamide.
  • the inner side of the gauge baffle 7 is formed with the side edge of the iron backing plate 8.
  • a vertical baffle 30 is fixedly fixed to the front and rear ends of the vertical surface to be matched with each other. The front and rear sides of the iron backing plate 8 and the lower backing plate 9 abut against the two Between the vertical baffle 30.
  • the working surface of the gauge baffle 7 protrudes upward to form a spring strip shoulder 14, so A shallow groove 32 for engaging with the outer side of the elastic bar 11 is formed on the inner side of the elastic bar shoulder 14.
  • a first edge 28 and a second edge 29 are respectively provided on the bottom surface of the under-rail pad 15 located in the extension direction of the steel rail 16.
  • a fine-adjusting backing plate 20 is also provided between the backing plate 15 and the iron backing plate 8. The front and rear ends of the backing plate 20 abut between the first side ear 28 and the second side ear 29, The inner sides of the first side ear 28 and the second side ear 29 are close to the side of the iron pad 8.
  • the height of the steel rail 16 can be fine-tuned by setting the fine-adjusting backing plate 20.
  • the first side ear 28 and the second side ear 29 are provided to block the fine-adjusting backing plate 20.
  • At least two sides of the iron backing plate 8 located on both sides of the under-rail backing plate 15 are respectively formed to abut against the under-rail backing plate 15 and the fine-adjusting backing plate 20.
  • the side stop 34; the sleeper 1 is embedded with a screw sleeve 19 that fits the spiral spike 12, and the bottom of the first height-adjusting pad 3 is formed with a concave portion, and how much the concave portion can be formed
  • a support bar 18 extending in a direction parallel to the length of the steel rail 16.
  • the stopper 34 By setting the stopper 34 and abutting against the side of the under-rail pad 15 and the side of the fine-tuning pad 20, it is used to limit the left and right positions of the side of the under-rail pad 15 and the fine-tuning pad 20 to prevent its deviation from affecting the overall fastener assembly
  • the pre-embedding of the screw sleeve 19 can make the spiral spike 12 more stable, and the length of the spiral spike 12 can be changed adaptively according to the height of the pad.
  • the contact area between the first height-adjusting pad 3 and the second height-adjusting pad 4 can be reduced, and both of them can be effectively prevented. ⁇ The one sticks together.
  • the iron shim plate 8, the iron plate lower shim plate 9, the first height-adjusting shim plate 3 and the second height-adjusting shim plate 4 are respectively provided with corresponding spiral spikes 12
  • the first height-adjusting backing plate 3 is a steel backing plate, and the second height-adjusting backing plate 4 is a poly Vinyl plastic backing board, the thickness of the first height-adjusting backing board 3 is: 25-55mm, the thickness of the second height-adjusting backing board 4 is: 4-6mm; wherein, the second height-adjusting backing board 4 It includes a first left half and a first right half that are symmetrical.
  • the first height-adjusting pad 3 When the thickness of the first height-adjusting pad 3 is less than or equal to 40 mm, the first height-adjusting pad 3 is divided into a symmetrical first Two left half and second right half.
  • the first through hole 23 can be set as a strip hole, and the iron pad 8 can be moved within a certain range by adjusting the thickness of the gauge baffle 7, so that the rail can be further adjusted. spacing.
  • the thickness of the first height-adjusting pad 3 should be higher than the thickness of the second height-adjusting pad 4, and the second height-adjusting pad 4 also serves as a buffer between the sleeper 1 and the second height-adjusting pad 4 A polyethylene plastic backing plate is used.
  • the thickness of the first height-adjusting backing plate 3 is large, it should have the characteristics of not being easily deformed, so a steel backing plate is used. After many tests, it is found that when the thickness of the first height-adjusting pad 3 is greater than 40mm, the overall stability of the fastener assembly will be affected if the two-half structure continues to be adopted due to the large amount of height-adjustment.
  • the integral structure can effectively avoid this problem.
  • the structure of the first left half and the first right half and the second left half and the second right half can refer to FIG. 4, that is, the structure of the first height-adjusting pad 3 and/or the second height-adjusting pad 4
  • the position of the shaft section is cut to form a two-half symmetrical structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)

Abstract

Est divulgué un ensemble de fixation pourvu d'un épaulement de retenue de traverse s'utilisant dans une voie sans ballast, l'ensemble de fixation comprenant une selle de rail sous rail (15), une selle de rail en fer (8), une selle de rail se situant sous la selle de rail en fer (9) et une première selle de rail de réglage de hauteur (3) et une seconde selle de rail de réglage de hauteur (4) qui sont agencées de façon détachable. Une rainure de support de traverse de rail se situe sur la partie supérieure d'une traverse (1), deux côtés de ladite rainure étant inclinés vers le haut et s'étendant vers l'extérieur pour former des épaulements de retenue de traverse (2), deux extrémités de la seconde selle de rail de réglage de hauteur (4) s'étendant vers le haut et formant des premières parties de prolongement (24) qui sont parallèles, et sont fixées à des faces latérales internes des épaulements de retenue de traverse (2) ; et deux extrémités de la première selle de rail de réglage de hauteur (3) s'étendant vers le haut et formant des secondes parties de prolongement (21) qui sont parallèles et sont fixées à des faces latérales internes des premières parties de prolongement (24) ; une plaque de jauge (7) est agencée entre chaque seconde partie de prolongement (21) et la selle de rail en fer (8) ; des blocs isolants (10) sont clipsés sur une surface supérieure et des faces latérales d'un patin de rail (17) ; une extrémité d'une pièce élastique (11) est clipsée sur la face supérieure du bloc isolant (10), et l'autre extrémité de celle-ci est clipsée sur une face de travail de la plaque de jauge (7) ; et une extrémité d'un tire-fond (12) traverse verticalement vers le bas, en séquence, un espace au milieu de la pièce élastique (11), la selle de rail en fer (8), la selle de rail se situant sous la selle de rail en fer (9), la première selle de rail de réglage de hauteur (3) et la seconde selle de rail de réglage de hauteur (4), et est ensuite vissée dans la traverse (1) ; et une rondelle plate (13) est placée entre la pièce élastique (11) et l'extrémité tête du tire-fond (12), et est emmanchée sur le tire-fond (12). Cet ensemble de fixation peut être utilisé pour régler l'écartement d'un rail en acier et sa position en hauteur, et présente un bon effet d'isolation.
PCT/CN2019/107092 2019-08-23 2019-09-20 Ensemble de fixation pourvu d'un épaulement de retenue de traverse s'utilisant dans une voie sans ballast WO2021035846A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201921399813.7U CN211057514U (zh) 2019-08-23 2019-08-23 用于无砟轨道中有轨枕挡肩的扣件组件
CN201921399813.7 2019-08-23

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WO2021035846A1 true WO2021035846A1 (fr) 2021-03-04

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Publication number Priority date Publication date Assignee Title
CN111764203A (zh) * 2020-07-28 2020-10-13 富适扣铁路器材(浙江)有限公司 一种有轨电车用扣件
CN114197255B (zh) * 2021-12-27 2022-09-09 北京铁科首钢轨道技术股份有限公司 城市轨道交通减振扣件

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