CN215714294U

CN215714294U - Height-adjustable iron base plate of steel rail fastener with bolt and height-adjustable structure thereof

Info

Publication number: CN215714294U
Application number: CN202121880893.5U
Authority: CN
Inventors: 王书卫; 刘道通; 韩朝霞; 谭大正; 杨宝峰; 马晋; 程保青; 田苗盛; 陈敦昌; 徐天然
Original assignee: China Railway Design Corp
Current assignee: China Railway Design Corp
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-01
Anticipated expiration: 2031-08-11

Abstract

The utility model provides a height-adjusting iron base plate of a bolt steel rail fastener and a height-adjusting structure thereof. The utility model can realize the height adjustment of the rail with the maximum length of 70mm, simultaneously keeps the stability of the stress state of the fastener, has good replaceability with the common fastener, fully utilizes the existing fastener parts, and has the characteristics of advanced technology, reliable performance and cost saving.

Description

Height-adjustable iron base plate of steel rail fastener with bolt and height-adjustable structure thereof

Technical Field

The utility model belongs to the technical field of railway tracks, and particularly relates to a height-adjusting iron base plate with a bolt steel rail fastener and a height-adjusting structure applying the iron base plate.

Background

In recent years, the operating mileage of urban rail transit in China is increasing continuously, and by the end of 2020, 244 urban rail transit operating lines are opened in 45 cities in China continental region, the total length of the operating lines is 7969.7 kilometers, wherein the subway operating lines are 6280.8 kilometers, and still show the trend of rising year by year. Along with the continuous increase of urban rail transit operation line length and operation age, the frequency that track differential settlement takes place is also higher and higher, and the demand that governs diseases such as track regulation is more and more.

In urban rail transit, a ballastless track bed is generally adopted, and the track height adjustment is mainly realized by a steel rail fastener. At present, the non-damping steel rail fasteners of urban rails are mainly divided into two types of T-shaped bolts and non-T-shaped bolts, the two types of fasteners generally adopt a mode of additionally arranging a height-adjusting base plate under an iron base plate to realize the height adjustment of the rails, and the height adjustment amount is generally not more than 30 mm. And the maximum settlement of some urban rail underground line tunnels reaches 70mm or even more, and the common heightening base plate can not meet the heightening requirement of the rails. In operation maintenance practice, settlement of more than 30mm generally takes to add the mode of establishing iron and heightening the backing plate under ordinary fastener iron backing plate and heightens, needs corresponding extension anchor bolt's length simultaneously, and this kind of mode of heightening is great to the anchor atress influence of fastener, easily takes place anchor bolt shear failure and pre-buried sheathed tube draw destruction, influences track geometric status and driving safety.

Disclosure of Invention

In order to solve the problems of small height adjustment amount of a common fastener and the anchoring strength and stability of the fastener caused by the increase of the height adjustment amount in the prior art, the utility model develops a bolt steel rail fastener height-adjustment iron base plate and a height adjustment structure thereof, which are suitable for sections with large uneven settlement amount of urban rail underground lines, can realize the height adjustment of the track with the maximum 70mm, simultaneously keep the stability of the stress state of the fastener, have good replaceability with the common fastener, fully utilize the components of the existing fastener, and have the characteristics of advanced technology, reliable performance and cost saving.

The utility model provides the following technical scheme:

the utility model provides a there is bolt rail fastener to transfer high section iron tie plate, includes the changeable support rail groove of middle part thickness specification, and support rail groove bilateral symmetry is equipped with the iron stand, and iron stand outside symmetry is equipped with the anchor limit, the support rail groove is used for bearing the rail, the iron stand is used for bearing the bullet strip and realizes withholding fixedly to the rail, be equipped with the anchor bolt hole on the anchor edge for through the bolt with iron tie plate anchor on the sleeper.

The iron base plate is of a symmetrical structure, the anchoring bolt holes are symmetrically arranged left and right, the anchoring bolt holes are long round holes, and the hole distances of the symmetrically arranged anchoring bolt holes are consistent with those of the corresponding non-height-adjustable common fasteners;

wherein, the anchoring edges at both sides of the iron backing plate are provided with wave-shaped structures which are used for matching and meshing with the matching and connecting structures (flat cushion blocks) at the upper part of the iron backing plate.

The upper part of the iron seat is provided with a groove structure for positioning and fixing the elastic strip; a T-shaped bolt hole penetrating through the iron base plate is formed in the middle of the iron base, and an opening in the upper portion of the T-shaped bolt hole is long and is used for accommodating a bolt head of a matching connection structure (T-shaped bolt) in the upper portion of the T-shaped bolt hole to pass through; the lower opening of the T-shaped bolt hole is circular and gradually narrows from bottom to top; and a transverse clamping groove vertical to the upper opening is arranged in the middle of the T-shaped bolt hole and used for clamping a bolt head of a matched connecting structure on the upper part of the T-shaped bolt hole.

The lower part of the rail bearing groove is designed in a grid hollowed-out mode, each hollowed-out grid is in a conical table shape, and filleting angles are designed at corners.

The iron base plate is provided with side lugs at two longitudinal sides, the height of each side lug is greater than the rail bearing surface of the rail bearing groove, and the iron base plate is used for limiting related structures (rail lower base plates) matched with the iron base plate.

The utility model also provides a height adjusting structure which comprises the iron base plate, wherein the iron base plate is anchored on a sleeper through a pair of anchor bolts matched with anchor bolt holes, an insulating buffer base plate is arranged at the lower part of the iron base plate, and a steel rail is fixed in a rail bearing groove of the iron base plate through a pair of buckling assemblies.

The anchor bolt anchors the iron tie plate on the sleeper through the heavy spring washer and the flat tie block anchor bolt hole in sequence; the buckling assembly comprises a T-shaped bolt, a nut, a flat washer and an elastic strip which are sequentially arranged, wherein the elastic strip is partially fixed in a groove of an iron seat of an iron base plate, part of the elastic strip is buckled on a gauge block on the side edge of a steel rail, and the T-shaped bolt is matched with a T-shaped bolt hole of the iron base plate to provide downward pressure for the elastic strip.

Wherein, the lower part of the steel rail is provided with a rail lower base plate for providing elasticity for the fastener; a rail lower height-adjusting base plate is arranged below the rail lower base plate and is used for providing a part of height adjustment amount in a matching manner; an iron base plate height-adjusting base plate is further arranged between the upper portion of the insulating buffer base plate and the iron base plate and used for providing a part of structure integral height adjustment amount in a matching mode.

Compared with the prior art, the utility model has the advantages and positive effects that: through the structural design of the integrated block casting of the iron base plate, the iron base part for fixing the elastic strip is synchronously heightened along with the rail bearing groove, and the fixed relation among the elastic strip, the iron base and the rail bearing groove is ensured to be unchanged. The bolt anchoring edges on the two sides of the iron base plate are kept consistent with the common fastener, the anchoring relation among the anchoring bolts, the iron base plate and the ballast bed is not changed, and the stable stress of the fastener is ensured. When settlement is treated, only the common iron base plate needs to be replaced by the heightening iron base plate, and other fastener parts can be used for service. The heightening iron base plate can realize heightening of 20-70mm or even higher requirements of the fastener, and meets the settlement treatment requirements of urban rail underground lines. The anchoring relation between the iron base plate and the lower foundation is kept unchanged, the stress is stable, the anchoring is firm, and the stability and the safety of the track after the height adjustment are ensured. The lower part of the thickened part of the iron base plate adopts a grid hollow design, so that the material consumption is reduced, and the manufacturing cost is saved. Can match completely with other spare parts that correspond ordinary fastener, conveniently fully utilize old in the transformation process, reduce the investment. The iron backing plate has high structural strength, good integrity, safety and stability.

Drawings

FIG. 1 is an assembled schematic view of the height adjustment structure of the present invention;

FIG. 2 is an assembled top view of the height adjustment structure of the present invention;

FIG. 3 is a top view of the iron shim plate of the present invention;

FIG. 4 is a front view of one specification of the iron shim plate according to the present invention;

FIG. 5 is a front view of another specification of the iron shim plate according to the present invention;

in the figure: 1. a T-bolt; 2. a nut; 3. a flat washer; 4. a spring bar; 5. a gauge block; 6. an iron backing plate; 7. an insulating buffer base plate; 8. a rail lower backing plate; 9. an anchor bolt; 10. a heavy duty spring washer; 11. a flat cushion block; 12. pre-burying a sleeve; 13. a rail lower elevation base plate; 14. the iron base plate is adjusted downwards to be higher; 15. a steel rail; 16. an anchor bolt hole; 17. anchoring the edge; 18. an iron seat; 19. a rail bearing groove; 20. hollowing out the blank space; 21. t-shaped bolt holes; 22. and (4) a side ear.

Detailed Description

The technical scheme of the utility model is further explained by combining the attached drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

As shown in fig. 1-2, the iron tie plate 6 of the present invention is symmetrically anchored on the sleeper through a pair of anchor bolts 9, heavy spring washers 10, a flat pad 11 and an embedded sleeve 12 in the prefabricated sleeper, and an insulating buffer tie plate 7 is generally arranged at the lower part of the iron tie plate 6 to meet the requirements of the insulation of a fastener and the buffer between the fastener and a lower foundation. Rail 15 is fixed in iron backing plate 6 through a pair of T type bolt 1, nut 2, plain washer 3 and bullet strip 4 on, rail 15 both sides respectively are equipped with a gauge block 5 for adjust the gauge, bullet strip 4 realizes the fixed to rail 15 through withholding gauge block 5, rail lower bolster 8 is established to rail 15 lower part, provides fastener elasticity.

As shown in fig. 3, the iron backing plate 6 of the present invention has a symmetrical structure, the anchor bolt holes 16 are arranged in a left-right symmetrical manner, generally two, and the hole distance between the two anchor bolt holes 16 is the same as that of the corresponding non-height-adjustable common fastener, so as to replace the existing line with the height-adjustable requirement. The anchor edges 17 on the two sides of the iron base plate are provided with wave-shaped structures which are occluded with the wave-shaped structures on the lower portion of the flat cushion block 11, and the positions of the iron base plate can be moved through occlusion dislocation of the wave-breaking structures, so that track gauge adjustment and control are achieved, the anchor bolt holes 16 are long round holes, and space is provided for the iron base plate to move to adjust the track gauge. The rail gauge is adjusted by adjusting the height of the fastener due to the existence of the rail base slope, but the variation is 1/20 (the rail base slope is 1:40) which is the adjustment amount of the fastener, the variation is smaller, and the rail gauge can be adjusted by adjusting the type of the rail gauge block 5 or adjusting the transverse position of the iron backing plate through the staggered teeth meshing of the wave-shaped structures of the anchoring edge 17 and the flat cushion block 11.

Referring to fig. 4-5, two symmetrical iron seats 18 are arranged on two sides of the rail supporting groove 19 of the iron base plate of the utility model, and the T-shaped bolt 1, the nut 2, the flat washer 3 and the elastic strip 4 are matched to realize the buckling and fixing of the steel rail 15. The upper part of the iron seat 18 is provided with a groove structure, which is convenient for positioning and fixing the elastic strip 4. The middle of the iron seat 18 is provided with a T-shaped bolt hole 21 which penetrates through the iron base plate, and the upper opening of the hole is in a long strip shape and can accommodate the bolt head of the T-shaped bolt 1 to pass through. The lower opening is circular, the diameter is 52mm, and the lower opening is gradually narrowed from bottom to top, so that the requirement of the draft angle during casting of the fastener is met. The middle of the T-shaped bolt is provided with a transverse clamping groove perpendicular to the upper opening, a bolt head of the T-shaped bolt 1 is placed through the upper elongated opening and pulled upwards after rotating for 90 degrees, the bolt head can be clamped into the clamping groove, the elastic strip 4 is placed behind the iron base 18, and the elastic strip 4 can be fixed through the nut 2 and the flat washer 3.

The iron backing plate realizes the large height adjustment of the fastener by thickening the thickness of the position of the rail bearing groove 19, the iron backing plate can thicken the rail bearing groove part according to the height adjustment requirement of the fastener, the structures of the two specifications of 20mm and 40mm of the thickened rail bearing groove are respectively illustrated in figures 4-5, and the height adjustment of the fastener is realized by matching with the height adjustment backing plate 14 with the height adjustment of 0-30 mm. The lower part of the thickened part of the rail bearing groove 19 adopts a grid hollowed-out design, for example, four hollowed-out grids 20 can be arranged, the building grids 20 are integrally in a conical table shape, the size of the bottom edge is 60 multiplied by 60mm, the size of the top edge is 45 multiplied by 45mm, and the corners are all chamfered. The design of grid fretwork makes the iron tie plate all have the beam type structure who link up transversely and vertically, can effectively reduce iron tie plate material quantity, lightens weight, saves the cost, can guarantee the wholeness, intensity and the stability of iron tie plate again. When the rail bearing groove 19 is thickened, the iron seat 18 is synchronously heightened, the relative size relation between the iron seat 18 and the rail bearing groove 19 is ensured not to be changed along with the thickening of the rail bearing groove 19, and the stable buckling relation of the elastic strip 4 to the steel rail 15 is maintained.

The utility model is provided with edge lugs 22 at two longitudinal sides of the iron base plate, the plane size of the edge lugs is 30 multiplied by 10mm, and the edge lugs are 7mm higher than the rail bearing surface of the urban rail groove 19. The function of the device is to limit the rail lower backing plate 8, and avoid bringing the rail lower backing plate 8 out of the rail bearing groove 19 when the steel rail stretches under the action of temperature stress.

The thickness of the anchoring edges 17 at the two sides of the iron backing plate is consistent with that of a corresponding non-heightening type common fastener, the anchoring edges are not thickened along with the part of the rail bearing groove 19, the stability of the anchoring relation of the anchoring bolt 9 to the iron backing plate can be kept, and the change of the stress of the whole structure of the fastener caused by heightening of the fastener is reduced as much as possible. The iron base plate is manufactured by adopting a casting process, and chamfers and slopes in the structural design are executed according to the relevant requirements of the casting process. In the uneven settlement section of the existing line structure, the height of the track can be adjusted by only removing the original fastener iron base plate and replacing the original fastener iron base plate with the height-adjusting iron base plate of the utility model at the same position, other parts of the fastener can be installed in situ by using the original parts, and the height-adjusting base plate 14 can be adjusted downwards by matching with part of the iron base plate made of high-density polyethylene according to the requirement of height adjustment on the site, so that the height adjustment of the track of 0-70mm and above can be realized. The anchor is firm reliable between fastener and basis, and 4 withholding of bullet strip are stable, and the fastener wholeness is good, and safety and stability, iron tie plate thickening part lower part carry out the box fretwork, reduce the material quantity, reduce the cost, and original fastener spare part can be used for, and ordinary iron tie plate under the replacement can regard as the circuit spare part to use if there is not the damage, and whole economic nature is good.

The scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a there is bolt rail fastener to transfer high section iron tie plate, includes the changeable support rail groove (19) of middle part thickness specification, and support rail groove (19) bilateral symmetry is equipped with iron seat (18), and iron seat (18) outside symmetry is equipped with anchor limit (17), support rail groove (19) are used for bearing rail (15), iron seat (18) are used for bearing bullet strip (4) and realize withholding fixedly rail (15), be equipped with anchor bolt hole (16) on anchor limit (17) for through the bolt with the iron tie plate anchor on the sleeper.

2. The height-adjustable iron base plate for the bolted steel rail fastener according to claim 1, wherein the iron base plate (6) is of a symmetrical structure, the anchoring bolt holes (16) are symmetrically arranged left and right, the anchoring bolt holes (16) are long round holes, and the hole pitch of the symmetrically arranged anchoring bolt holes (16) is consistent with that of the corresponding non-height-adjustable ordinary fastener.

3. A bolted steel rail fastener riser iron tie plate according to claim 1, characterized in that the anchoring edges (17) on both sides of the iron tie plate are provided with wave-like formations for mating engagement with mating attachment formations on the upper part thereof.

4. The bolted steel rail fastener heightening iron base plate according to claim 1, wherein a groove structure is provided at the upper part of said iron seat (18) for positioning and fixing the elastic strip (4); a T-shaped bolt hole (21) penetrating through the iron base plate is formed in the middle of the iron base (18), and an opening in the upper portion of the T-shaped bolt hole (21) is long and is used for accommodating a bolt head of a matching connection structure in the upper portion of the T-shaped bolt hole to pass through; the lower opening of the T-shaped bolt hole (21) is circular and gradually narrows from bottom to top; and a transverse clamping groove vertical to the opening at the upper part is arranged in the middle of the T-shaped bolt hole (21) and is used for clamping a bolt head of a matched connecting structure at the upper part.

5. The bolted steel rail fastener heightening iron base plate according to claim 1, wherein the lower part of the rail supporting groove (19) is designed to be a grid hollow, each hollow (20) is in a shape of a conical table, and the corners of the hollow are designed to be rounded.

6. A bolted steel rail fastener heightening iron plate as defined in claim 1, wherein the iron plate is provided on both longitudinal sides thereof with lugs (22) at a height greater than the rail-supporting surface of the rail-supporting groove (19) for limiting the relative structure fitted therein.

7. An heightening structure comprising the iron tie plate (6) according to any one of claims 1 to 6, said iron tie plate (6) being anchored to a sleeper by a pair of anchor bolts (9) cooperating with anchor bolt holes (16), said iron tie plate (6) being provided at a lower portion thereof with an insulating cushion plate (7), and a rail (15) being fixed in a rail receiving groove (19) of the iron tie plate (6) by a pair of fastening members.

8. The heightening structure of claim 7, characterized in that the anchor bolt (9) anchors the iron tie plate (6) to the sleeper through a heavy spring washer (10), a flat pad (11) and an anchor bolt hole (16) in sequence; the buckling assembly comprises a T-shaped bolt (1), a nut (2), a flat washer (3) and an elastic strip (4), wherein the elastic strip (4) is partially fixed in a groove of an iron seat (18) of an iron base plate (6), the elastic strip is partially buckled on a gauge block (5) on the side edge of a steel rail (15), and the T-shaped bolt (1) is matched with a T-shaped bolt hole (21) of the iron base plate (6) to provide downward pressure for the elastic strip (4).

9. The height-adjusting structure according to claim 7, characterized in that a rail lower pad (8) is arranged below the steel rail (15) for providing elasticity for the fastener; a rail lower height-adjusting base plate (13) is further arranged below the rail lower base plate (8) and used for providing a part of height adjustment amount in a matching manner; an iron base plate lower height-adjusting base plate (14) is further arranged between the upper portion of the insulating buffer base plate (7) and the iron base plate (6) and used for providing a part of structure integral height adjustment amount in a matching mode.