A fastener structure for a subway

Abstract

The application discloses a fastener structure for a subway, which comprises a T-shaped bolt, a spring strip, an anchoring bolt, an iron pad, an elastic pad under the iron pad, a height-adjusting pad under the iron pad, an insulating track gauge block, a height-adjusting pad under the track and a pad under the track; the middle position of the iron pad is a rail mounting position, the rail mounting position is used for mounting a rail, the rail extends along the front-back direction, and the pad under the track and the height-adjusting pad under the track are sequentially arranged between the rail and the iron pad from bottom to top; the iron pad sequentially has the elastic pad under the iron pad and the height-adjusting pad under the iron pad, and the height-adjusting pad under the iron pad is in contact with a rail bearing surface. The fastener structure has the advantages of reasonable design, simple structure, convenient installation and dismounting and the like, and can solve the problems of small adjustment amount and inconvenient maintenance of the existing subway fastener.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of railway engineering, and particularly relates to a fastener structure for a subway. BACKGROUND

[0002] The subway is a rapid, large-capacity, electric traction track transportation built in a city. The train runs on a fully closed line, and the line in the central urban area is basically built in the underground tunnel, and the line outside the central urban area is generally built on the elevated bridge or the ground. The subway is a city rail transit system covering various underground and overground road rights, high density and high capacity.

[0003] Classification of fasteners: According to the laid track tie, the fasteners can be divided into two types of wooden tie fasteners and concrete tie fasteners. According to the structure, the fasteners can be classified by the following methods: according to the fastening part, rigid and elastic; according to the track tie structure, with shoulder and without shoulder; according to the connection mode of the track tie, the pad and the fastening part, undivided type and divided type; according to the track tie, wooden tie fastener and concrete tie fastener. The above types of fasteners are laid in the railway of China.

[0004] At present, the fasteners used in the domestic urban rail transit can be roughly divided into five types of traditional fasteners, DT series fasteners, WJ series fasteners, spring fasteners and shock-absorbing fasteners.

[0005] Generally, the fastener is composed of a rail fastening part and a track pad. The function of the fastening part is mainly to fix the rail, limit the movement of the rail in front, back, left, right and up, and maintain the geometric size of the track. The function of the track pad is mainly to provide sufficient elasticity for the track, and to assist the fastening part in fixing the rail.

[0006] In the subway track line independently developed by China, many use elastic strip I type fasteners and elastic strip II type fasteners, and the track gauge adjustment amount is small, which is not conducive to the maintenance of the line.

[0007] Therefore, the applicant has developed a new subway fastener, which is an elastic divided type fastener. The fastener height adjustment amount and the track gauge left-right adjustment amount are greatly improved, and the installation and disassembly are more convenient. SUMMARY

[0008] The present application belongs to the technical field of railway engineering, and particularly relates to a fastener structure for a subway.

[0009] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0010] A fastener structure for a subway, comprising a T-shaped bolt, an elastic strip, an anchor bolt, an iron pad, an elastic pad under the iron pad, a height adjustment pad under the iron pad, an insulating track gauge block, a height adjustment pad under the rail and a pad under the rail.

[0011] The middle position of the iron base plate is a rail mounting position, which is used for mounting a rail, and the rail extends in the front-rear direction, and the rail and the iron base plate are sequentially provided with a rail bottom plate and a rail bottom height adjustment plate from bottom to top;

[0012] The iron base plate is sequentially provided with an iron base plate lower elastic pad and an iron base plate lower height adjustment pad, and the iron base plate lower height adjustment pad is in contact with the rail bearing surface;

[0013] Two diagonal positions on the iron base plate are respectively provided with anchor bolt mounting holes, downward anchor bolts are respectively passed through the anchor bolt mounting holes, and the anchor bolts sequentially pass through the iron base plate lower elastic pad and the iron base plate lower height adjustment pad and are connected with the embedded sleeve;

[0014] The other two diagonal positions of the iron base plate are respectively provided with positioning platforms, the positioning platforms protrude upward from the iron base plate, each positioning platform is composed of two front-rear symmetrical positioning seats, the positioning seats are respectively provided with arc-shaped grooves at outer positions on the upper sides, and the positioning seats are respectively provided with two front-rear opposite limiting grooves at inner positions, the two limiting grooves form an inverted T-shaped slot with a necked upper portion, and the inverted T-shaped slot has an entrance on the left side or the right side;

[0015] The two outer extending portions of the elastic strip are respectively clamped in the arc-shaped grooves of the two positioning seats, the inner extending portion of the elastic strip is pressed on the rail, and an insulating gauge block is arranged between the inner extending portion of the elastic strip and the rail;

[0016] The lower end of the T-shaped bolt is fixedly provided with a protrusion extending forward and backward, the protrusion of the T-shaped bolt is clamped in the inverted T-shaped slot of the positioning platform, the upper end of the T-shaped bolt extends out of the necked upper portion of the inverted T-shaped slot and beyond the elastic strip, and the upper end of the T-shaped bolt is provided with a nut to press the elastic strip downward.

[0017] Further, the anchor bolt mounting hole is a long circular hole extending in the left-right direction, and the holes for the anchor bolts to pass through on the iron base plate lower elastic pad and the iron base plate lower height adjustment pad are also correspondingly provided as long circular holes.

[0018] Further, the upper side of the iron base plate around the anchor bolt mounting hole is an iron base plate tooth region, the iron base plate tooth region is divided into a front iron base plate tooth region and a rear iron base plate tooth region with the center of the anchor bolt mounting hole as a boundary, the front iron base plate tooth region and the rear iron base plate tooth region are respectively provided with a plurality of tooth rows, and iron base plate positioning grooves are formed between adjacent tooth rows;

[0019] The upper end of the anchor bolt is provided with a distance adjusting buckle plate between the iron backing plate, the distance adjusting buckle plate is provided with a round hole corresponding to the rod part of the anchor bolt installation hole, the lower side of the distance adjusting buckle plate 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 and a rear distance adjusting buckle tooth area with the center of the round hole as a boundary, a plurality of tooth rows are respectively arranged in the front distance adjusting buckle tooth area and the rear distance adjusting buckle tooth area, and a distance adjusting buckle positioning groove is formed between adjacent tooth rows.

[0020] The iron backing plate tooth area of the iron backing plate is matched with the distance adjusting buckle tooth area of the distance adjusting buckle plate, the tooth rows of the iron backing plate tooth area are clamped with the distance adjusting buckle positioning groove, and the tooth rows of the distance adjusting buckle tooth area are clamped with the iron backing plate positioning groove.

[0021] Further, the tooth rows of the front iron backing plate tooth area and the rear iron backing plate tooth area are staggered in the left-right direction, and the tooth rows of the front distance adjusting buckle tooth area and the rear distance adjusting buckle tooth area are staggered in the left-right direction.

[0022] Further, the upper side of the distance adjusting buckle plate is provided with a distance adjusting buckle mark line, the distance adjusting buckle mark line extends along the front-rear direction and passes through, and the iron backing plate is provided with an iron backing plate mark line on the front side or the rear side of the iron backing plate tooth area.

[0023] Further, the iron backing plate is further provided with a limiting boss on the front side or the rear side of the iron backing plate tooth area, and the limiting boss is a horizontally extending long strip structure.

[0024] Further, the upper surface and the lower surface of the iron backing plate lower elastic pad plate are respectively provided with grooves, and the grooves extend along the left-right direction; a plurality of grooves are arranged on the upper surface and the lower surface along the front-rear direction, and the grooves on the upper surface and the lower surface are alternately arranged in the front-rear direction.

[0025] Further, the cross section of the groove is a U-shaped structure that is outwardly flared.

[0026] Further, the two long round holes of the iron backing plate lower height adjusting pad plate are a left long round hole and a right long round hole respectively.

[0027] The left side of the left long round hole is connected with a left channel that horizontally extends to the left, the left channel penetrates through the iron backing plate lower height adjusting pad plate to the left, and forms an opening on the left side of the iron backing plate lower height adjusting pad plate.

[0028] The lower side of the right long round hole is connected with a right channel that extends forward and is inclined, the right channel penetrates through the iron backing plate lower height adjusting pad plate forward, and forms an opening on the front side of the iron backing plate lower height adjusting pad plate.

[0029] Further, the iron backing plate lower height adjusting pad plate has multiple thickness specifications.

[0030] The beneficial effects of the present application are:

[0031] 1. The present application has reasonable design, simple structure, convenient installation and disassembly, and can solve the problems of small adjustment amount and inconvenient maintenance in existing subway fasteners.

[0032] In the present application, the anchor bolt mounting hole is a long circular hole extending in the left-right direction, which cooperates with the iron pad tooth area of the iron pad and the gauge adjusting gasket tooth area of the gauge adjusting gasket, facilitating left-right rail gauge adjustment and achieving a large left-right rail gauge adjustment amount (+24mm to -28mm).

[0033] In the present application, the iron pad lower height adjusting gasket and the rail bearing surface between the elastic gasket and the sleeper play a height adjusting role; in cooperation with the rail lower height adjusting gasket, the height adjusting amount can reach 40mm.

[0034] 4. The upper and lower surfaces of the iron pad lower elastic gasket are provided with grooves, and the grooves on the upper and lower surfaces are alternately arranged in the front-rear direction, which can simultaneously meet the requirements of stiffness and elasticity, and play the roles of adjusting the static stiffness of the fastener and damping.

[0035] 5. The iron pad of the present application plays the role of connecting the sleeper and the steel rail, and the iron pad is provided with anchor bolt holes and positioning seats, the positioning seat has a reverse T-shaped groove, the anchor bolt hole is connected with the anchor bolt to fix the fastener to the sleeper, and the reverse T-shaped groove is connected with the T-shaped bolt to fix the elastic strip and the steel rail.

[0036] The reverse T-shaped groove in the present application is located on the upper side of the iron pad, and the reverse T-shaped groove has an entrance on the left side or the right side, so that the T-shaped bolt can directly enter the reverse T-shaped groove through the entrance on the side, and the connection and installation with the iron pad are completed, which is convenient and fast for installation and disassembly.

[0037] 6. In the present application, the iron pad lower height adjusting gasket is provided with left and right channels, which cooperate with the anchor bolts to facilitate installation and disassembly. When the iron pad lower height adjusting gasket is installed and disassembled, the fastener does not need to be completely disassembled, it only needs to loosen the anchor bolts, then the left anchor bolt corresponding to the left channel is first inserted into the left channel, then the iron pad lower height adjusting gasket is rotated to make the right anchor bolt also enter the right channel, and then the adjustment and alignment are continued. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is the assembly top view of the subway fastener in the embodiment of the present application;

[0039] Figure 2 is Figure 1 A-A cross-sectional view in the present application;

[0040] Figure 3 is the top view of the iron pad in the embodiment of the present application;

[0041] Figure 4 is Figure 3 B-B sectional view of the embodiment of the present application (flat slope iron pad);

[0042] Figure 5 is Figure 3 B-B sectional view of the embodiment of the present application (slope bottom slope iron pad);

[0043] Figure 6 is Figure 3 C-C sectional view of the embodiment of the present application;

[0044] Figure 7 is Figure 4 or Figure 5 enlarged view of I in the embodiment of the present application;

[0045] Figure 8 is Figure 3 enlarged view of II in the embodiment of the present application;

[0046] Figure 9 is the front view of the pitch adjusting buckle plate in the embodiment of the present application;

[0047] Figure 10 is Figure 9 bottom view of the embodiment of the present application;

[0048] Figure 11 is Figure 9 enlarged view of III in the embodiment of the present application;

[0049] Figure 12 is Figure 9 enlarged view of IV in the embodiment of the present application;

[0050] Figure 13 is the top view of the elastic pad plate under the iron pad plate in the embodiment of the present application;

[0051] Figure 14 is Figure 13 D-D sectional view of the embodiment of the present application;

[0052] Figure 15 is Figure 13 E-E sectional view of the embodiment of the present application;

[0053] Figure 16 is Figure 15 enlarged view of V in the embodiment of the present application;

[0054] Figure 17 is the top view of the height adjusting pad plate under the iron pad plate in the embodiment of the present application;

[0055] Figure 18 is the front view of the height adjusting pad plate under the iron pad plate in the embodiment of the present application;

[0056] Figure 19 is the front view of the T-shaped bolt in the embodiment of the present application;

[0057] Figure 20 is a side view of the T-shaped bolt in the embodiment of the application.

[0058] The drawings are only for illustrative purposes and cannot be understood as limiting the patent; in order to better illustrate the embodiment, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application.

[0060] Embodiment one:

[0061] As shown in Figures 1 to 4 , and as shown in Figures 6 to 20 , a fastener structure for a subway of the application comprises a T-shaped bolt 1, a W-shaped elastic strip 3, an anchor bolt 4, an iron pad 8, an elastic pad under the iron pad 9, a height adjustment pad under the iron pad 10, an insulating gauge block 11, a height adjustment pad under the rail 12, and a pad under the rail 13.

[0062] The middle position of the iron pad 8 is a rail mounting position, which is used for mounting a rail. The rail extends in the front-rear direction, and the pad under the rail 13 and the height adjustment pad under the rail 12 are sequentially arranged between the rail and the iron pad from bottom to top.

[0063] The iron pad 8 sequentially has the elastic pad under the iron pad 9 and the height adjustment pad under the iron pad 10, and the height adjustment pad under the iron pad 10 is in contact with the rail bearing surface.

[0064] The iron pad 8 adopts a structure similar to a parallelogram, and the material of the iron pad is QT450-10.

[0065] Two diagonal positions on the iron pad 8 are respectively provided with anchor bolt mounting holes 81, and downward anchor bolts 4 are respectively arranged through the anchor bolt mounting holes 81. The anchor bolts 4 sequentially pass through the elastic pad under the iron pad 9 and the height adjustment pad under the iron pad 10 and are connected with a pre-buried plastic sleeve 14.

[0066] The other two diagonal positions of the iron pad 8 are respectively provided with positioning platforms, which protrude upward from the iron pad 8. Each positioning platform is composed of two front-rear symmetrical positioning seats 82. The positioning seat 82 is provided with an arc-shaped groove 83 at the outer position on the upper side, and is provided with two front-rear opposite limiting grooves at the inner position, which form an inverted T-shaped slot 84 with a narrowed upper part. The left side or the right side of the inverted T-shaped slot 84 is an entrance (i.e., the left side of the inverted T-shaped slot on the left side is an entrance, and the right side of the inverted T-shaped slot on the right side is an entrance).

[0067] The two outer extending portions of the W-shaped elastic strip are respectively clamped in the circular arc grooves of the two positioning seats 82, and the inner extending portion of the W-shaped elastic strip is pressed on the rail, and an insulating gauge block 11 is arranged between the inner extending portion of the elastic strip and the rail.

[0068] The lower end of the T-shaped bolt 1 is fixedly provided with a protrusion extending forward and backward, the protrusion of the T-shaped bolt 1 is clamped in the inverted T-shaped groove 84 of the positioning table, the upper end of the T-shaped bolt 1 extends out of the upper portion of the inverted T-shaped groove 84 and beyond the W-shaped elastic strip, and the upper end of the T-shaped bolt 1 is provided with a lock nut 2 and a matched nut cover 15 to press the W-shaped elastic strip downward, so as to press the rail.

[0069] In the embodiment, the anchoring bolt mounting hole 81 is a long circular hole extending in the left-right direction, and the holes for the anchoring bolt 4 to pass through on the elastic pad 9 below the iron pad and the height adjustment pad 10 below the iron pad are also correspondingly provided as long circular holes.

[0070] In the embodiment, the iron pad 8 plays a role of connecting the sleeper and the rail, the iron pad 8 is provided with the anchoring bolt hole 81 and the positioning seat 82, the positioning seat 82 is provided with the inverted T-shaped groove 84, the anchoring bolt hole 81 is connected with the anchoring bolt 4 to play a role of fixing the fastener to the sleeper, and the inverted T-shaped groove 84 is connected with the T-shaped bolt 1 to play a role of fixing the elastic strip and the rail.

[0071] Since the inverted T-shaped groove 84 is located on the upper side of the iron pad 8, the inverted T-shaped groove 84 has an entrance on the left side or the right side, and the T-shaped bolt 1 does not need to pass through the iron pad from bottom to top, but can directly enter the inverted T-shaped groove from the entrance on the side to complete the connection and installation with the iron pad, which is convenient and fast for installation and disassembly.

[0072] In the embodiment, the iron pad 8 is a flat slope iron pad. The iron pad 8 is further provided with a triangular direction mark as an installation direction indication.

[0073] The upper side of the iron pad 8 around the anchoring bolt mounting hole 81 is an iron pad tooth region, the iron pad tooth region is divided into a front iron pad tooth region 85 and a rear iron pad tooth region 86 with the center of the anchoring bolt mounting hole 81 as a boundary, the front iron pad tooth region 85 and the rear iron pad tooth region 86 are respectively provided with a plurality of tooth rows 87, the tooth rows 87 are sawtooth structures, and iron pad positioning grooves are formed between adjacent tooth rows.

[0074] Meanwhile, the tooth rows 87 of the front iron pad tooth region 85 and the rear iron pad tooth region 86 are staggered in the left-right direction, and the tooth rows of the front iron pad tooth region and the rear iron pad tooth region are staggered by 2.6 mm.

[0075] The upper end head of the anchor bolt 4 and the iron pad plate 8 are provided with a distance adjusting buckle plate 7, and the distance adjusting buckle plate 7 is provided with a round hole 71 corresponding to the position of the anchor bolt mounting hole 81 and matched with the stem of the anchor bolt.

[0076] The distance adjusting buckle plate 7 adopts a square structure, and the size is basically corresponding to the tooth area of the iron pad plate.

[0077] The lower side of the distance adjusting buckle plate 7 is provided with a distance adjusting buckle tooth area, and 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 the center of the round hole. 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, and the tooth rows 74 are sawtooth structures. The tooth rows 74 are staggered in the left and right directions.

[0078] Meanwhile, the tooth rows 74 of the front distance adjusting buckle tooth area 72 and the rear distance adjusting buckle tooth area 73 are staggered in the left and right directions, 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 2.6 mm.

[0079] The iron pad plate tooth area of the iron pad plate 8 is matched with the distance adjusting buckle tooth area of the distance adjusting buckle plate 7. The tooth rows 87 of the iron pad plate tooth area are engaged with the distance adjusting buckle positioning groove, and the tooth rows 74 of the distance adjusting buckle tooth area are engaged with the iron pad plate positioning groove. Meanwhile, due to the staggered arrangement of the front and rear tooth rows, the occlusion after movement is more compact.

[0080] The distance adjusting buckle plate 7 and the iron pad plate 8 cooperate to adjust the left and right track gauges of the steel rail and fix the iron pad plate. When adjusting, the anchor bolt 4 is loosened first, then the relative position of the distance adjusting buckle plate 7 and the iron pad plate 8 is adjusted, the tooth rows of the distance adjusting buckle plate 7 are engaged with the tooth rows on the iron pad plate 8, and then the anchor bolt 4 is tightened. The setting facilitates the left and right adjustment of the track gauge, and a larger left and right adjustment amount of the track gauge (+24 mm to -28 mm) can be achieved.

[0081] The upper side of the distance adjusting buckle plate 7 is also provided with a distance adjusting buckle marker line 75, which extends along the front and rear directions and passes through, which facilitates clear display of the left and right adjustment amount of the track gauge.

[0082] In the embodiment, the iron pad plate 8 is also provided with a limiting boss 88 on the front side or the rear side of the iron pad plate tooth area (the limiting boss is on the front side of the iron pad plate tooth area on the left side; the limiting boss is on the rear side of the iron pad plate tooth area on the right side). The limiting boss 88 is a horizontally extending long strip structure, which facilitates the horizontal movement of the distance adjusting buckle plate 7 along the limiting boss 88.

[0083] In the embodiment, the iron pad 8 is further provided with an iron pad mark line 89 on the front side or the rear side of the iron pad tooth region (the iron pad mark line is on the front side of the iron pad tooth region on the left side; the iron pad mark line is on the rear side of the iron pad tooth region on the right side), the iron pad mark line 89 extends in the front-rear direction, and the extension line of the iron pad mark line 89 passes through the center of the anchor bolt mounting hole 81. The iron pad mark line 89 is arranged to facilitate comparison with the pitch adjusting buckle mark line 75 of the pitch adjusting buckle 7, so as to clearly show the left-right adjustment amount.

[0084] In the embodiment, the iron pad mark line 89 and the pitch adjusting buckle mark line 75 are both concave straight grooves, and the cross section of the straight groove is semicircular.

[0085] The iron pad lower elastic pad 9 adopts a parallelogram structure, and the material of the iron pad lower elastic pad is thermoplastic polyester elastomer. The iron pad lower elastic pad 9 is provided with an oblong hole 94 at the diagonal position for the anchor bolt 4 to pass through.

[0086] The upper surface and the lower surface of the iron pad lower elastic pad 9 are respectively provided with grooves 91 and 92, the grooves extend in the left-right direction, a plurality of grooves 91 on the upper surface and a plurality of grooves 92 on the lower surface are arranged in the front-rear direction, and the grooves 91 on the upper surface and the grooves 92 on the lower surface are alternately arranged in the front-rear direction.

[0087] The number of grooves is selected according to the use scene, so as to simultaneously meet the rigidity and elasticity requirements, and play the roles of adjusting the static rigidity of the fastener and reducing the shock.

[0088] The iron pad lower elastic pad is manufactured by injection molding process. After 20kN-70kN under 6 million times of fatigue load (loading frequency 3-5Hz), the size change of the iron pad lower elastic pad is: the length and the width do not exceed 5%, the thickness does not exceed 7%, the static rigidity change does not exceed 20%, and the pad cannot be broken.

[0089] In the embodiment, the cross section of the groove on the iron pad lower elastic pad 9 is a U-shaped structure with an outward flared opening, and the two bottom corners of the U-shaped structure are arc-shaped transitions, which are convenient to process and can better meet the above requirements.

[0090] In the embodiment, the iron pad lower height adjusting pad 10 adopts a parallelogram structure, and the material of the iron pad lower height adjusting pad 10 is high-density polyethylene.

[0091] The iron pad lower height adjusting pad 10 is provided with two oblong holes at the diagonal position for the anchor bolt 4 to pass through, which are a left oblong hole 101 and a right oblong hole 102.

[0092] The left side of the left long round hole 101 is connected with a left channel 103 extending horizontally to the left, which penetrates the iron pad lower height adjusting pad 10 to the left and forms an opening on the left side of the iron pad lower height adjusting pad 10; the width of the left channel 103 corresponds to the width of the left long round hole 101.

[0093] The lower side of the right long round hole 102 is connected with a right channel 104 extending forward and left inclined, which penetrates the iron pad lower height adjusting pad 10 forward and forms an opening on the front side of the iron pad lower height adjusting pad 10; the width of the right channel 104 corresponds to the length of the right long round hole 102.

[0094] The iron pad lower height adjusting pad is provided with the left channel 103 and the right channel 104, which cooperate with the anchor bolts to facilitate installation and disassembly. When the iron pad lower height adjusting pad is installed and disassembled, the fasteners do not need to be completely disassembled, and only the anchor bolts need to be loosened. Then, the anchor bolts on the left side of the left channel 103 are first inserted into the left channel 103, and then the iron pad lower height adjusting pad is rotated so that the anchor bolts on the right side also enter the right channel 104, and then the alignment is adjusted.

[0095] In the embodiment, the iron pad lower height adjusting pad has multiple thickness specifications, including 2mm, 3mm, 5mm and 10mm, which plays a role in height adjustment. In cooperation with the rail lower height adjusting pad 12, the height adjustment amount can reach 40mm.

[0096] Embodiment two:

[0097] As shown in Figure 5 , the iron pad 8 of the embodiment is a slope iron pad with a slope bottom. The iron pad 8 is provided with a triangular direction mark on the upper page as an installation direction indication.

[0098] The subway fastener structure of the above embodiment is installed and used in the following order.

[0099] 1. Check whether the top surface of the pre-buried plastic sleeve 14 is flush with the surface of the sleeper and whether there is impurity in the sleeve.

[0100] 2. Install the iron pad lower elastic pad 9.

[0101] 3. Place the iron pad 8. If a slope iron pad with a slope bottom is selected, the rail bottom slope faces the inner side of the track (according to the triangular direction on the iron pad); if a flat slope iron pad is selected, it can be installed normally. When installing, the center of the long round hole of the iron pad 8 should be aligned with the center of the plastic sleeve 14; the distance adjusting clamping plate 7 should be placed in the center, the teeth should be engaged with each other, and the distance adjusting clamping plate should be placed in the center of the alignment mark line; select an anchor bolt 4 with an appropriate length and type, cover it with a flat washer and a spring washer, and then screw it into the plastic sleeve after applying oil to the threaded part.

[0102] 4. Lay the track under the pad 13, and then lay the steel rail.

[0103] 5. According to the configuration table, install the appropriate specification of the insulating rail block 11 between the steel rail and the iron pad iron seat.

[0104] 6. Check the track direction, confirm the appropriate installation of the W-shaped elastic strip 3, so that the front end of the middle of the elastic strip is not more than 1mm apart from the insulating rail block 11, the reference torque is (100-140) N.m, and it should not be too tight or too loose. The T-shaped bolt 1 should be oiled before installation.

[0105] 7. Tighten the anchor bolt 4 with a torque of (200-250) N.m to fix the iron pad 8.

[0106] 8. Install the iron pad under the height adjustment pad 10 and the track under the height adjustment pad 12 where height adjustment is required.

[0107] The subway fastener structure of the embodiment is reasonable in design, simple in structure, and convenient to install and disassemble, and can solve the problems of small adjustment amount and inconvenient maintenance in the existing subway fastener.

[0108] The above embodiments are only used to illustrate and not to limit the technical solutions of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present application can still be modified or equivalently replaced without departing from the spirit and scope of the present application. Any modification or partial replacement should be covered in the scope of the claims of the present application.

[0109] If the terms "first", "second", etc. are used to limit the parts in this paper, those skilled in the art should know that "first", "second" are used only for the convenience of describing the present application and simplifying the description. If there is no further statement, the above terms have no special meaning.

[0110] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "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 based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.

[0111] In the description of the application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

Claims

1. A fastener structure for a subway, characterized by: The T-shaped bolt, the elastic strip, the anchor bolt, the iron base plate, the elastic pad under the iron base plate, the height adjusting pad under the iron base plate, the insulating gauge block, the height adjusting pad under the rail and the pad under the rail are included. The middle position of the iron base plate is the rail mounting position, the rail mounting position is used for mounting the rail, the rail extends along the front-rear direction, and the rail and the iron base plate are sequentially provided with the pad under the rail and the height adjusting pad under the rail from bottom to top; The iron base plate is sequentially provided with the elastic pad under the iron base plate and the height adjusting pad under the iron base plate, and the height adjusting pad under the iron base plate is in contact with the rail bearing surface; Two diagonal positions on the iron base plate are respectively provided with anchor bolt mounting holes, downward anchor bolts are respectively arranged in the anchor bolt mounting holes, and the anchor bolts sequentially pass through the elastic pad under the iron base plate and the height adjusting pad under the iron base plate and are connected with the embedded sleeve; The other two diagonal positions of the iron base plate are respectively provided with positioning tables, the positioning tables protrude upward from the iron base plate, each positioning table is composed of two front-rear symmetrical positioning seats, the positioning seats are respectively provided with two front-rear opposite limiting grooves at the inner position, and the two limiting grooves form an inverted T-shaped groove with a necked upper portion, and the inverted T-shaped groove has an entrance on the left side or the right side thereof; The two outer stretching portions of the elastic strip are respectively clamped in the arc-shaped grooves of the two positioning seats, the inner stretching portion of the elastic strip is pressed on the rail, and the insulating gauge block is arranged between the inner stretching portion of the elastic strip and the rail; The lower end of the T-shaped bolt is fixedly provided with a protrusion extending forward and backward, the protrusion of the T-shaped bolt is clamped in the inverted T-shaped groove of the positioning table, the upper end of the T-shaped bolt extends out of the necked upper portion of the inverted T-shaped groove and exceeds the elastic strip, and the upper end of the T-shaped bolt is provided with a nut for pressing the elastic strip downward; The upper side of the iron base plate is provided with an iron base plate tooth region around the anchor bolt mounting hole, the iron base plate tooth region is divided into a front iron base plate tooth region and a rear iron base plate tooth region with the center of the anchor bolt mounting hole as a boundary, the front iron base plate tooth region and the rear iron base plate tooth region are respectively provided with a plurality of tooth rows, and iron base plate positioning grooves are formed between adjacent tooth rows; The upper end of the anchor bolt is provided with a distance adjusting buckle, and the distance adjusting buckle is provided with a circular hole corresponding to the rod part of the anchor bolt; the lower side of the distance adjusting buckle is provided with a distance adjusting buckle tooth region, the distance adjusting buckle tooth region is divided into a front distance adjusting buckle tooth region and a rear distance adjusting buckle tooth region with the center of the circular hole as a boundary, the front distance adjusting buckle tooth region and the rear distance adjusting buckle tooth region are respectively provided with a plurality of tooth rows, and distance adjusting buckle positioning grooves are formed between adjacent tooth rows; The iron base plate tooth region of the iron base plate is matched with the distance adjusting buckle tooth region of the distance adjusting buckle, the tooth rows of the iron base plate tooth region are clamped in the distance adjusting buckle positioning grooves, and the tooth rows of the distance adjusting buckle tooth region are clamped in the iron base plate positioning grooves; The tooth rows of the front iron base plate tooth region and the rear iron base plate tooth region are staggered in the left-right direction; the tooth rows of the front distance adjusting buckle tooth region and the rear distance adjusting buckle tooth region are staggered in the left-right direction; The upper side of the distance adjusting buckle is provided with a distance adjusting buckle mark line, the distance adjusting buckle mark line extends along the front-rear direction and passes through; the iron base plate is provided with an iron base plate mark line on the front side or the rear side of the iron base plate tooth region.

2. The fastener structure for a subway according to claim 1, characterized in that: The anchor bolt mounting hole is a long circular hole extending in the left-right direction, and the holes for the anchor bolt to pass through on the elastic pad under the iron pad and the height adjustment pad under the iron pad are also correspondingly long circular holes.

3. The fastener structure for a subway according to claim 1, characterized in that: The iron pad is further provided with a limiting boss on the front side or the rear side of the tooth area of the iron pad, and the limiting boss is a horizontally extending long strip structure.

4. The fastener structure for a subway according to claim 2, characterized in that: The upper surface and the lower surface of the elastic pad under the iron pad are respectively provided with grooves, and the grooves extend in the left-right direction; the grooves on the upper surface and the lower surface are provided with multiple grooves in the front-rear direction, and the grooves on the upper surface and the lower surface are alternately arranged in the front-rear direction.

5. The fastener structure for a subway according to claim 4, characterized in that: The cross section of the groove is a U-shaped structure with an outward flared opening.

6. The fastener structure for a subway according to claim 2, characterized in that: The two long circular holes of the height adjustment pad under the iron pad 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 extending horizontally to the left, the left channel penetrates through the height adjustment pad under the iron pad to the left, and forms an opening on the left side of the height adjustment pad under the iron pad; The lower side of the right long circular hole is connected with a right channel extending forward and inclined, the right channel penetrates through the height adjustment pad under the iron pad to the front, and forms an opening on the front side of the height adjustment pad under the iron pad.

7. The fastener structure for a subway according to claim 6, characterized in that: The height adjustment pad under the iron pad has multiple thickness specifications.

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