CN218842743U - Fastener structure for subway - Google Patents

Abstract

The utility model discloses a fastener structure for subway, which comprises a T-shaped bolt, an elastic strip, an anchor bolt, an iron base plate, an elastic base plate under the iron base plate, an heightening base plate under the iron base plate, an insulating gauge block, an heightening base plate under the rail and a base plate under the rail; the middle position of the iron base plate is a steel rail mounting position which is used for mounting a steel rail, the steel rail extends along the front-back direction, and meanwhile, a lower rail base plate and a lower rail height-adjusting base plate are sequentially arranged between the steel rail and the iron base plate from bottom to top; the iron base plate is downwards provided with an iron base plate lower elastic base plate and an iron base plate lower heightening base plate in sequence, and the iron base plate lower heightening base plate is in contact with the rail bearing surface. The utility model relates to a rationally, simple structure, installation dismantle more convenient, can solve in the current subway fastener adjustment volume little, the inconvenient difficult problem of maintenance.

Description

Fastener structure for subway

Technical Field

The utility model belongs to the technical field of railway engineering, concretely relates to fastener structure for subway.

Background

The subway is a rapid, large-traffic and electric power traction rail transit built in cities. The train runs on a totally closed line, the line located in a central urban area is basically arranged in an underground tunnel, the line outside the central urban area is generally arranged on a viaduct or the ground, and the subway is an urban rail transit system which covers various underground and overground rights of roads in the urban area, has high density and high transportation capacity.

And (3) classifying the fasteners: the fastener has two types of wood pillow fastener and concrete pillow fastener according to the laid sleeper. The fasteners can be classified according to their structure by the snap press differentiation: rigidity and elasticity; distinguishing according to sleeper structures: with and without a shoulder; the connection modes of the sleeper, the base plate and the buckling piece are distinguished as follows: non-split and split; distinguishing according to sleepers: there are wooden pillow fasteners and concrete pillow fasteners. The above various types of fasteners are paved on railways in China.

The fasteners used in the domestic urban rail transit can be roughly divided into five types, namely traditional fasteners, DT series fasteners, WJ series fasteners, spring fasteners and damping fasteners.

The general fastener is composed of a rail fastening and pressing piece and a rail underlayer. The buckling and pressing piece is mainly used for fixing the steel rail, limiting the front and back, left and right and up and down movement of the steel rail and keeping the geometric dimension of the rail. The under-rail cushion layer mainly has the function of providing enough elasticity for the rail and assisting the buckling and pressing piece to fix the steel rail.

In the subway track line independently developed in China, many elastic strip I type fasteners and elastic strip II type fasteners are adopted, the track gauge adjustment amount is small, and the maintenance of the line is not facilitated.

Therefore, the applicant develops a novel subway fastener, and the fastener adjusting amount and the rail gauge left and right adjusting amount are greatly improved and are more convenient to mount and dismount for the elastic split type fastener.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem among the prior art, provide a fastener structure for subway.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a fastener structure for subways comprises a T-shaped bolt, an elastic strip, an anchoring bolt, an iron base plate, an elastic base plate below the iron base plate, an heightening base plate below the iron base plate, an insulating gauge block, an heightening base plate below a rail and a lower base plate below the rail;

the middle position of the iron base plate is a steel rail mounting position which is used for mounting a steel rail, the steel rail extends along the front-back direction, and meanwhile, a lower rail base plate and a lower rail height-adjusting base plate are sequentially arranged between the steel rail and the iron base plate from bottom to top;

the iron base plate is downwards provided with an iron base plate lower elastic base plate and an iron base plate lower heightening base plate in sequence, and the iron base plate lower heightening base plate is in contact with the rail bearing surface;

two diagonal positions on the iron base plate are respectively provided with an anchor bolt mounting hole, the anchor bolt mounting holes respectively penetrate through downward anchor bolts, and the anchor bolts simultaneously penetrate through the iron base plate lower elastic base plate and the iron base plate lower heightening base plate in sequence and are connected with the embedded sleeve;

the other two opposite angle positions of the iron base plate are respectively provided with a positioning table, the positioning tables protrude upwards out of the iron base plate, each positioning table consists of two positioning seats which are symmetrical front and back, the positions of the upper side surfaces of the positioning seats close to the outer positions are respectively provided with an arc-shaped groove, the positions of the positioning seats close to the inner positions are provided with two limiting grooves which are opposite front and back, the two limiting grooves form an inverted T-shaped groove with a necking upper part, and the left side or the right side of the inverted T-shaped groove is provided with an inlet;

the two outer extension parts of the elastic strip are respectively clamped in the arc grooves of the two positioning seats, the inner extension part of the elastic strip is pressed on the steel rail, and an insulating gauge block is arranged between the inner extension part of the elastic strip and the steel rail;

the fixed lug that stretches out around being equipped with of lower extreme of T type bolt, the lug cooperation joint of T type bolt is in the type of falling T of location platform inslot, and the upper end of T type bolt is stretched out and surpasss the bullet strip by the upper portion throat in the type of falling T type groove, and the upper end of T type bolt is equipped with the nut and compresses tightly the bullet strip downwards simultaneously.

Furthermore, the anchor bolt mounting holes are long round holes extending in the left-right direction, and holes for the anchor bolts to penetrate through are correspondingly formed in the elastic base plate below the iron base plate and the hole for the anchor bolt to penetrate through in the heightening base plate below the iron base plate.

Further, an iron base plate tooth area is arranged on the upper side of the iron base plate and around the anchor bolt mounting hole, the iron base plate tooth area is divided into a front iron base plate tooth area and a rear iron base plate tooth area by taking the center of the anchor bolt mounting hole as a boundary, the front iron base plate tooth area and the rear iron base plate tooth area are respectively provided with a plurality of tooth rows, and an iron base plate positioning groove is formed between every two adjacent tooth rows;

a distance adjusting buckle plate is arranged between the head of the upper end of the anchor bolt and the iron base plate, and a round hole matched with the rod part of the anchor bolt is arranged at the corresponding position of the distance adjusting buckle plate and the anchor bolt mounting hole; the lower side of the distance-adjusting buckle plate is provided with a distance-adjusting buckle plate tooth area, the distance-adjusting buckle plate tooth area is divided into a front distance-adjusting buckle plate tooth area and a rear distance-adjusting buckle plate tooth area by taking the center of the round hole as a boundary, the front distance-adjusting buckle plate tooth area and the rear distance-adjusting buckle plate tooth area are respectively provided with a plurality of tooth rows, and a distance-adjusting buckle plate positioning groove is formed between every two adjacent tooth rows;

the tooth area of the iron base plate is matched with the tooth area of the distance adjusting buckle plate, the tooth row of the tooth area of the iron base plate is clamped with the positioning groove of the distance adjusting buckle plate, and the tooth row of the tooth area of the distance adjusting buckle plate is clamped with the positioning groove of the iron base plate.

Furthermore, tooth rows in the tooth area of the front iron shim plate and the tooth area of the rear iron shim plate are arranged in a staggered manner in the left-right direction; the tooth rows of the front distance-adjusting buckle tooth area and the rear distance-adjusting buckle tooth area are arranged in a staggered mode in the left-right direction.

Furthermore, a distance adjusting buckle marking line is arranged on the upper side of the distance adjusting buckle and extends in the front-back direction and penetrates through the distance adjusting buckle marking line; and the iron base plate is provided with iron base plate marking lines on the front side or the rear side of the tooth area of the iron base plate.

Furthermore, the iron base plate is also provided with a limiting boss at the front side or the rear side of the tooth area of the iron base plate, and the limiting boss is of a horizontally extending long strip-shaped structure.

Furthermore, grooves are respectively arranged on the upper surface and the lower surface of the elastic base plate under the iron base plate, and the grooves extend along the left-right direction; the grooves on the upper surface and the lower surface are arranged in a plurality of along the front-back direction, and the grooves on the upper surface and the grooves on the lower surface are sequentially and alternately arranged in the front-back direction.

Further, the cross section of the groove is of an outwards flared U-shaped structure.

Further, the two long circular holes of the iron base plate lower-height adjusting base plate are respectively a left long circular hole and a right long circular hole;

the left side of the left long circular hole is connected with a left channel which horizontally extends leftwards, the left channel penetrates through the iron base plate leftwards to lower the height-adjusting base plate, and an opening is formed in the left side of the iron base plate lower height-adjusting base plate;

the lower side of the right long round hole is connected with a right channel which extends forwards and inclines, the right channel forwards penetrates through the iron base plate and then the height-adjustable base plate, and an opening is formed in the front side of the iron base plate and then the height-adjustable base plate.

Furthermore, the iron base plate with the height adjusted downwards has various thickness specifications.

The beneficial effects of the utility model are that:

1. the utility model relates to a rationally, simple structure, installation dismantle more convenient, can solve the difficult problem that the adjustment volume is little, the maintenance is inconvenient among the current subway fastener.

The utility model discloses well anchor bolt mounting hole is the slotted hole that the left right direction extends, and the adjustment about convenient gauge is controlled to the regional roll adjustment buckle tooth of the iron backing plate tooth of cooperation iron backing plate and roll adjustment buckle tooth region, can realize adjustment volume (+ 24 mm- — 28 mm) about great gauge.

The utility model has the advantages that the lower iron base plate of the middle iron base plate is heightened, and the heightening effect is achieved between the lower elastic base plate of the iron base plate and the rail bearing surface of the sleeper; the height adjustment amount can reach 40mm by matching with the rail lower height adjustment base plate.

4. The utility model discloses iron backing plate lower elastic backing plate upper and lower surface is equipped with the slot, and the slot of upper surface and lower surface sets up in turn in the front and back direction in proper order, can compromise simultaneously and satisfy rigidity and elasticity requirement, plays adjusting fastener static rigidity and cushioning effect.

5. The utility model discloses an iron tie plate plays the effect of connecting sleeper and rail, and iron tie plate is from taking anchor bolt hole and positioning seat, and positioning seat department has the type of falling T type groove, and anchor bolt hole and anchor bolt connection play the effect of fixing the sleeper with the fastener, fall the effect that T type groove and T type bolted connection played fixed bullet strip and rail.

The utility model provides a fall T type groove and be located the upside of iron tie plate, fall T type groove and be the inlet port on its left side or right side, T type bolt need not follow up whole iron tie plate that passes down, from the inlet port of side alright directly get into the type groove of falling T, accomplish with the installation of being connected of iron tie plate, convenient and fast is dismantled in the installation.

6. The utility model discloses well indisputable backing plate increases backing plate down through the setting of left passageway and right passageway, left passageway and right passageway and anchor bolt cooperation, convenient to install and dismantle. When the installation of the iron base plate heightening base plate is disassembled, the fasteners do not need to be completely disassembled, the anchor bolts only need to be unscrewed, then the left channel corresponds to the left anchor bolt, the anchor bolts enter the left channel, then the iron base plate heightening base plate is rotated, the anchor bolts on the right side also enter the right channel, and then the alignment is continued.

Drawings

Fig. 1 is an assembly plan view of a subway fastener according to the embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a top view of an iron backing plate according to an embodiment of the present invention;

FIG. 4 is a schematic sectional view taken along line B-B in FIG. 3 (a flat-slope iron shim plate);

FIG. 5 is a schematic view of section B-B of FIG. 3 (with a sloping bottom iron backing plate);

FIG. 6 is a schematic cross-sectional view taken along line C-C of FIG. 3;

FIG. 7 is an enlarged view of I in FIG. 4 or FIG. 5;

FIG. 8 is an enlarged view of II of FIG. 3;

FIG. 9 is a front view of an embodiment of the distance adjusting buckle of the present invention;

FIG. 10 is a bottom view of FIG. 9;

FIG. 11 is an enlarged view of III in FIG. 9;

FIG. 12 is an enlarged view of IV in FIG. 9;

FIG. 13 is a top view of the elastic pad under the iron pad in the embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view taken along line D-D of FIG. 13;

FIG. 15 is a schematic cross-sectional view taken along line E-E of FIG. 13;

FIG. 16 is an enlarged view of V in FIG. 15;

fig. 17 is a top view of an iron tie plate with an elevated tie plate according to an embodiment of the present invention;

FIG. 18 is a front view of an iron tie plate with an elevated tie plate according to an embodiment of the present invention;

FIG. 19 is a front view of a T-bolt in an embodiment of the present invention;

fig. 20 is a side view of a T-bolt in an embodiment of the invention.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 4 and fig. 6 to 20, the utility model discloses a fastener structure for subway, including T type bolt 1, W type bullet strip 3, anchor bolt 4, iron tie plate 8, iron tie plate lower elastic backing plate 9, iron tie plate lower heightening backing plate 10, insulating gauge block 11, rail lower heightening backing plate 12 and rail lower backing plate 13.

The middle position of the iron base plate 8 is a steel rail mounting position, the steel rail mounting position is used for mounting a steel rail, the steel rail extends along the front-back direction, and meanwhile, a lower rail base plate 13 and a lower rail height adjusting base plate 12 are sequentially arranged between the steel rail and the iron base plate from bottom to top.

The iron base plate 8 is provided with an iron base plate lower elastic base plate 9 and an iron base plate lower heightening base plate 10 in sequence, and the iron base plate lower heightening base plate 10 is in contact with the rail bearing surface.

The iron backing plate 8 adopts an approximate parallelogram structure, and is made of QT450-10.

Anchor bolt mounting holes 81 are respectively arranged at two opposite corners of the iron base plate 8, downward anchor bolts 4 respectively penetrate through the anchor bolt mounting holes 81, and the anchor bolts 4 simultaneously sequentially penetrate through the iron base plate lower elastic base plate 9 and the iron base plate lower heightening base plate 10 and are connected with the embedded plastic sleeve 14.

Two other diagonal positions of iron tie plate 8 are equipped with the location platform respectively, the location platform upwards protrudes iron tie plate 8, every location platform comprises two positioning seats 82 of fore-and-aft symmetry, positioning seat 82 leans on outer position department to all be equipped with arc recess 83 at last side, positioning seat 82 leans on inner position to be equipped with two relative spacing grooves in front and back, two spacing grooves constitute the inverted T type groove 84 of upper portion throat, inverted T type groove 84 is the inlet port on its left side or right side (promptly, the left side in left side inverted T type groove is the inlet port, the right side in the inverted T type groove on right side is the inlet port).

Two overhanging portions of the W-shaped elastic strip are respectively clamped in the arc grooves of the two positioning seats 82, the inward extending portion of the W-shaped elastic strip is pressed on the steel rail, and an insulating gauge block 11 is arranged between the inward extending portion of the elastic strip and the steel rail.

The fixed lug that stretches out around being equipped with of lower extreme of T type bolt 1, the lug cooperation joint of T type bolt 1 is in the inverted T type groove 84 of location platform, and the upper end of T type bolt 1 is stretched out and surpasss W type bullet strip by the upper portion throat of inverted T type groove 84, and the upper end of T type bolt 1 is equipped with lock nut 2 and complex nut cover 15 simultaneously and compresses tightly W type bullet strip downwards to compress tightly the rail.

In this embodiment, the anchor bolt mounting hole 81 is an elongated circular hole extending in the left-right direction, and the holes for the anchor bolt 4 to pass through on the iron pad lower elastic pad 9 and the iron pad lower heightening pad 10 are also correspondingly set as elongated circular holes.

In this embodiment, the iron tie plate 8 plays the effect of connecting sleeper and rail, and iron tie plate 8 is from taking anchor bolt hole 81 and positioning seat 82, and positioning seat 82 department has inverted T type groove 84, and anchor bolt hole 81 is connected with anchor bolt 4 and is played the effect of fixing the fastener to the sleeper, and inverted T type groove 84 is connected with T type bolt 1 and is played the effect of fixed bullet strip and rail.

Because 8 fall T type groove 84 and be located the upside of iron tie plate 8, fall T type groove 84 and be the inlet port on its left side or right side, T type bolt 1 need not be followed from up whole iron tie plate that passes down, from the inlet port of side alright directly get into the T type groove of falling, accomplish with the installation of being connected of iron tie plate, convenient and fast is dismantled in the installation.

In this embodiment, the iron shim plate 8 is a flat-slope iron shim plate. The iron backing plate 8 is also provided with a triangular direction mark as an installation direction indication.

The periphery of the anchor bolt mounting hole 81 on the upper side of the iron base plate 8 is an iron base plate tooth area, the iron base plate tooth area is divided into a front iron base plate tooth area 85 and a rear iron base plate tooth area 86 by taking the center of the anchor bolt mounting hole 81 as a boundary, the front iron base plate tooth area 85 and the rear iron base plate tooth area 86 are respectively provided with a plurality of tooth rows 87, the tooth rows 87 are of a sawtooth structure, and iron base plate positioning grooves are formed between adjacent tooth rows.

Meanwhile, the tooth rows 87 of the front iron backing plate tooth area 85 and the rear iron backing plate tooth area 86 are arranged in a staggered mode in the left-right direction, and the tooth rows of the front iron backing plate tooth area and the rear iron backing plate tooth area are staggered by 2.6mm.

A distance adjusting buckle plate 7 is arranged between the head part of the upper end of the anchor bolt 4 and the iron backing plate 8, and a round hole 71 matched with the rod part of the anchor bolt is arranged at the position of the distance adjusting buckle plate 7 corresponding to the anchor bolt mounting hole 81. A flat washer 5 and a heavy spring washer 6 are also arranged between the upper end head of the anchor bolt 4 and the distance-adjusting buckle 7.

The distance-adjusting buckle 7 is of a square structure, and the size of the distance-adjusting buckle basically corresponds to the tooth area of the iron pad. The material of the distance-adjusting buckle plate is QT450-10.

The lower side of the distance-adjusting buckle 7 is provided with a distance-adjusting buckle tooth area, the distance-adjusting buckle tooth area is divided into a front distance-adjusting buckle tooth area 72 and a rear distance-adjusting buckle tooth area 73 by taking the center of a round hole as a boundary, the front distance-adjusting buckle tooth area 72 and the rear distance-adjusting buckle tooth area 73 are respectively provided with a plurality of tooth rows 74, the tooth rows 74 are of a zigzag structure, and distance-adjusting buckle positioning grooves are formed between the adjacent tooth rows 74.

Meanwhile, the tooth rows 74 of the front distance adjusting buckle tooth area 72 and the rear distance adjusting buckle tooth area 73 are arranged in a staggered mode in the left-right direction, and the tooth rows of the front distance adjusting buckle tooth area 72 and the rear distance adjusting buckle tooth area 73 are staggered by 2.6mm.

The tooth area of the iron base plate 8 is matched with the tooth area of the distance adjusting buckle plate 7, the tooth row 87 of the tooth area of the iron base plate is clamped with the positioning groove of the distance adjusting buckle plate, and the tooth row 74 of the tooth area of the distance adjusting buckle plate is clamped with the positioning groove of the iron base plate. Meanwhile, the front and the rear tooth lines are arranged in a staggered manner, so that the occlusion is tighter after the movement.

The distance-adjusting buckle 7 and the iron base plate 8 are matched to adjust the left and right track distances of the steel rail and fix the iron base plate. During adjustment, the anchoring bolt 4 is firstly unscrewed, then the left and right relative positions of the distance adjusting buckle plate 7 and the iron base plate 8 are adjusted, so that the tooth rows of the distance adjusting buckle plate 7 are meshed with the tooth rows on the iron base plate 8, and then the anchoring bolt 4 is screwed down. The device is convenient for the left and right adjustment of the track gauge, and can realize a larger left and right adjustment amount (+ 24 mm-28 mm) of the track gauge.

The upper side of the distance adjusting buckle 7 is also provided with a distance adjusting buckle marking line 75, and the distance adjusting buckle marking line 75 extends in the front-back direction and penetrates through the distance adjusting buckle marking line, so that the left-right adjustment amount of the track distance can be conveniently and clearly displayed.

In this embodiment, the iron base plate 8 is further provided with a limiting boss 88 (the limiting boss is located at the front side of the tooth area of the iron base plate at the left side, and the limiting boss is located at the rear side of the tooth area of the iron base plate at the right side) at the front side or the rear side of the tooth area of the iron base plate, and the limiting boss 88 is a horizontally extending strip-shaped structure, so that the distance-adjusting buckle plate 7 can conveniently move horizontally along the limiting boss 88.

In this embodiment, the iron shim plate 8 is further provided with an iron shim plate marking line 89 (the marking line is on the front side of the iron shim plate tooth area at the left side, and the marking line is on the rear side of the iron shim plate tooth area at the right side) on the front side or the rear side of the iron shim plate tooth area, the iron shim plate marking line 89 extends in the front-rear direction, and the extension line of the iron shim plate marking line 88 passes through the center of the anchor bolt mounting hole 81. The arrangement of the iron base plate marking line 89 is convenient to compare with the distance adjusting buckle plate marking line 75 of the distance adjusting buckle plate 7, so that the left and right adjusting amount can be clearly displayed.

In this embodiment, the iron backing plate marking line 89 and the distance-adjusting buckle marking line 75 are both concave linear grooves, and the cross sections of the linear grooves are semicircular.

The lower elastic cushion plate 9 of the iron cushion plate adopts a parallelogram structure, and the lower elastic cushion plate of the iron cushion plate is made of thermoplastic polyester elastomer. And an oblong hole 94 for the anchor bolt 4 to pass through is formed in the diagonal position of the elastic cushion plate 9 below the iron cushion plate.

The upper surface and the lower surface of the elastic shim plate 9 under the iron shim plate are respectively provided with grooves 91 and 92, the grooves extend along the left-right direction, the grooves 91 on the upper surface and the grooves 92 on the lower surface are arranged in a plurality along the front-back direction, and the grooves 91 on the upper surface and the grooves 92 on the lower surface are sequentially and alternately arranged in the front-back direction.

The quantity setting of slot is selected according to the use scene to can compromise simultaneously and satisfy rigidity and elasticity requirement and be suitable, play and adjust fastener static rigidity and cushioning effect.

The elastic base plate under the iron base plate is manufactured by adopting an injection molding process. The size of the elastic base plate under the iron base plate is changed into after the elastic base plate is subjected to fatigue load of 20 kN-70 kN for 600 ten thousand times (the loading frequency is 3-5 Hz): the length and width are not more than 5%, the thickness is not more than 7%, the static rigidity change is not more than 20%, and the cushion plate cannot crack.

In this embodiment, the cross section of slot is the U type structure of outside flaring on the elastic backing plate 9 under the iron backing plate, and two base angle positions of U type structure are the arc transition, and processing is convenient, and can better satisfy above-mentioned requirement.

In this embodiment, the iron tie plate heightening tie plate 10 adopts a parallelogram structure, and the iron tie plate heightening tie plate 10 is made of high density polyethylene.

Two long round holes for the anchor bolt 4 to pass through are arranged at the diagonal positions of the iron base plate lower heightening base plate 10 and are a left long round hole 101 and a right long round hole 102 respectively.

The left side of the left long circular hole 101 is connected with a left channel 103 which horizontally extends leftwards, the left channel 103 penetrates through the iron base plate lower heightening base plate 10 leftwards, and an opening is formed in the left side of the iron base plate lower heightening base plate 10; the width of the left channel 103 corresponds to the width of the left oblong hole 101.

The lower side of the right long circular hole 102 is connected with a right channel 104 which extends forwards and inclines leftwards, the right channel 104 forwards penetrates through the iron base plate lower heightening base plate 10, and an opening is formed in the front side of the iron base plate lower heightening base plate 10; the width of the right channel 104 corresponds to the length of the right oblong hole 102.

The iron base plate is adjusted high down through the left channel 103 and the right channel 104, the left channel 103 and the right channel 104 are matched with the anchor bolt, and the installation and the disassembly are convenient. When the iron tie plate heightening base plate is installed and disassembled, the fasteners do not need to be completely disassembled, the anchoring bolts only need to be unscrewed, then the left channel 103 corresponds to the left anchoring bolt, the anchoring bolts enter the left channel 103, then the iron tie plate heightening base plate is rotated, the anchoring bolts on the right side also enter the right channel 104, and then the alignment is continued.

In this embodiment, the iron base plate heightening base plate has multiple thickness specifications, and the thickness has four kinds of 2mm, 3mm, 5mm, 10mm, plays the effect of heightening. The height adjustment amount can reach 40mm by matching with the rail lower height adjustment base plate 12.

Example two:

as shown in fig. 5, the iron shim plate 8 of the present embodiment is a sloping-bottom iron shim plate. The upper page of the iron base plate 8 is provided with a triangular direction mark as an installation direction indication.

The fastener structure for the subway of the above embodiment is installed in the following order when being installed and used.

1. And checking whether the top surface of the embedded plastic sleeve 14 is flush with the surface of the sleeper and whether impurities exist in the sleeve.

2. And installing an iron backing plate lower elastic backing plate 9.

3. Placing an iron base plate 8, wherein if a slope bottom slope iron base plate is selected, the rail bottom slope faces the inner side of the rail (in the triangular direction on the iron base plate); if a flat-slope iron base plate is selected, the installation is normal. When the device is installed, the center of the long circular hole of the iron base plate 8 is aligned to the center of the plastic sleeve 14; the distance-adjusting buckle 7 is required to be placed right, the teeth are required to be meshed with the teeth on the iron base plate 8, and the distance-adjusting buckle is placed in the middle of the alignment mark line; an anchor bolt 4 with a proper length model is selected, a flat washer and a spring washer are sleeved on the anchor bolt 4, and the thread part of the anchor bolt 4 is oiled and then screwed into the plastic sleeve.

4. Laying a rail lower backing plate 13 and then laying the steel rail.

5. And installing an insulating gauge block 11 with proper specification between the steel rail and the iron base plate iron seat according to the configuration table.

6. Checking the track gauge direction, mounting the W-shaped elastic strip 3 after confirming that the distance between the lower jaw at the middle front end of the elastic strip and the insulating track gauge block 11 is proper and is not larger than 1mm, wherein the reference torque is (100 to 140) N.m and is not too tight or too loose, and the T-shaped bolt 1 is coated with oil before being mounted.

7. The anchor bolts 4 are tightened with a torque of (200 to 250) N.m to fix the iron backing plate 8.

8. And an iron base plate lower-lifting base plate 10 and a rail lower-lifting base plate 12 are installed at the position needing to be lifted.

The fastener for subway of this embodiment structural design is reasonable, simple structure, installation are dismantled more conveniently, can solve the difficult problem that the adjustment volume is little, the maintenance is inconvenient among the current subway fastener.

The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the present invention may be made without departing from the spirit and scope of the invention, which is intended to be covered by the appended claims.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims (10)

1. The utility model provides a fastener structure for subway which characterized in that: the device comprises a T-shaped bolt, an elastic strip, an anchoring bolt, an iron base plate, an elastic base plate under the iron base plate, an elevation base plate under the iron base plate, an insulating gauge block, an elevation base plate under the rail and a lower base plate under the rail;

the middle position of the iron base plate is a steel rail mounting position which is used for mounting a steel rail, the steel rail extends along the front-back direction, and meanwhile, a lower rail base plate and a lower rail heightening base plate are sequentially arranged between the steel rail and the iron base plate from bottom to top;

the iron base plate is downwards provided with an iron base plate lower elastic base plate and an iron base plate lower heightening base plate in sequence, and the iron base plate lower heightening base plate is in contact with the rail bearing surface;

anchor bolt mounting holes are respectively formed in two opposite corners of the iron base plate, downward anchor bolts penetrate through the anchor bolt mounting holes respectively, and the anchor bolts sequentially penetrate through the iron base plate lower elastic base plate and the iron base plate lower heightening base plate and are connected with the embedded sleeve;

the other two diagonal positions of the iron base plate are respectively provided with a positioning table, the positioning tables protrude upwards out of the iron base plate, each positioning table consists of two positioning seats which are symmetrical front and back, arc-shaped grooves are formed in the positions, close to the outer positions, of the upper side surfaces of the positioning seats, two limiting grooves which are opposite front and back are formed in the positions, close to the inner positions, of the positioning seats, the two limiting grooves form an inverted T-shaped groove with a necking upper portion, and an inlet is formed in the left side or the right side of the inverted T-shaped groove;

the two extending parts of the elastic strip are respectively clamped in the arc grooves of the two positioning seats, the inward extending part of the elastic strip is pressed on the steel rail, and an insulating gauge block is arranged between the inward extending part of the elastic strip and the steel rail;

the fixed lug that stretches out around being equipped with of lower extreme of T type bolt, the lug cooperation joint of T type bolt is in the type of falling T of location platform inslot, and the upper end of T type bolt is stretched out and surpasss the bullet strip by the upper portion throat in the type of falling T type groove, and the upper end of T type bolt is equipped with the nut and compresses tightly the bullet strip downwards simultaneously.

2. The fastener structure for a subway according to claim 1, wherein: the anchor bolt mounting holes are long round holes extending in the left-right direction, and the holes for the anchor bolts to penetrate through on the lower elastic base plate of the iron base plate and the lower heightening base plate of the iron base plate are correspondingly arranged into the long round holes.

3. The fastener structure for a subway according to claim 2, wherein: an iron pad tooth area is arranged on the upper side of the iron pad around the anchor bolt mounting hole and divided into a front iron pad tooth area and a rear iron pad tooth area by taking the center of the anchor bolt mounting hole as a boundary, the front iron pad tooth area and the rear iron pad tooth area are respectively provided with a plurality of tooth rows, and an iron pad positioning groove is formed between every two adjacent tooth rows;

a distance adjusting buckle plate is arranged between the head of the upper end of the anchor bolt and the iron base plate, and a round hole matched with the rod part of the anchor bolt is arranged at the corresponding position of the distance adjusting buckle plate and the anchor bolt mounting hole; a distance-adjusting buckle tooth area is arranged on the lower side of the distance-adjusting buckle plate, the distance-adjusting buckle tooth area is divided into a front distance-adjusting buckle tooth area and a rear distance-adjusting buckle tooth area by taking the center of the round hole as a boundary, the front distance-adjusting buckle tooth area and the rear distance-adjusting buckle tooth area are respectively provided with a plurality of tooth rows, and distance-adjusting buckle plate positioning grooves are formed between the adjacent tooth rows;

the tooth area of the iron base plate is matched with the tooth area of the distance adjusting buckle plate, the tooth row of the tooth area of the iron base plate is clamped with the positioning groove of the distance adjusting buckle plate, and the tooth row of the tooth area of the distance adjusting buckle plate is clamped with the positioning groove of the iron base plate.

4. The fastener structure for a subway according to claim 3, wherein: the tooth rows of the tooth area of the front iron backing plate and the tooth area of the rear iron backing plate are arranged in a staggered manner in the left-right direction; the tooth rows of the front distance-adjusting buckle tooth area and the rear distance-adjusting buckle tooth area are arranged in a staggered mode in the left and right direction.

5. The fastener structure for a subway according to claim 4, wherein: the upper side of the distance-adjusting buckle plate is provided with a distance-adjusting buckle plate marking line which extends in the front-back direction and penetrates through the distance-adjusting buckle plate marking line; and the iron base plate is provided with iron base plate marking lines on the front side or the rear side of the tooth area of the iron base plate.

6. The fastener structure for a subway according to claim 4, wherein: the iron base plate is also provided with a limiting boss at the front side or the rear side of the tooth area of the iron base plate, and the limiting boss is of a horizontally extending strip-shaped structure.

7. The fastener structure for a subway according to claim 2, wherein: grooves are respectively arranged on the upper surface and the lower surface of the lower elastic base plate of the iron base plate, and the grooves extend along the left-right direction; the grooves on the upper surface and the lower surface are arranged in a plurality of along the front-back direction, and the grooves on the upper surface and the grooves on the lower surface are sequentially and alternately arranged in the front-back direction.

8. The fastener structure for a subway according to claim 7, wherein: the cross section of the groove is of an outward flaring U-shaped structure.

9. The fastener structure for a subway according to claim 2, wherein: the two long round holes of the iron base plate lower heightening base plate are respectively a left long round hole and a right long round hole;

the left side of the left long circular hole is connected with a left channel which horizontally extends leftwards, the left channel penetrates through the iron base plate leftwards to lower the height-adjusting base plate, and an opening is formed in the left side of the iron base plate lower height-adjusting base plate;

the lower side of the right long round hole is connected with a right channel which extends forwards and inclines, the right channel forwards penetrates through the iron base plate and then the height-adjustable base plate, and an opening is formed in the front side of the iron base plate and then the height-adjustable base plate.

10. The fastener structure for a subway according to claim 9, wherein: the iron base plate with the height adjusted downwards is provided with various thickness specifications.

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