Freight railway track fastener

Abstract

The utility model discloses a freight railway track fastener, which comprises a sleeper, a rail bearing groove and a fastener, the combined casing pipes are symmetrically connected in the sleepers below the two ends of the rail bearing groove; the adjusting base plate assembly is arranged on the upper surface of the rail bearing groove; the iron base plate is arranged above the adjusting base plate assembly; the buckling and pressing assemblies are symmetrically arranged at the two ends above the iron base plate; the under-rail base plate assembly is arranged on the iron base plate between the two buckling and pressing assemblies; the gauge blocks are arranged on the two sides of the steel rail correspondingly; the anchoring assembly penetrates through the two ends of the iron base plate and the two ends of the adjusting base plate assembly respectively and is connected into the two combined sleeves in a fastened mode. Wherein one end of the gauge block is buckled on the buckling assembly at the corresponding end, and the other end of the gauge block is buckled on the steel rail at the corresponding side. The fastener is simple in structure, convenient to replace, high in adaptability, convenient to implement on site, capable of guaranteeing the safety and stability of the fastener under the heavy-load railway load with the large axle load and suitable for large-scale application and popularization.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rail fastener, in particular to a freight railway rail fastener, belongs to the field of track engineering technology. BACKGROUND

[0002] At present, based on the structural characteristics of freight railway, the strength requirement of track structure is relatively high, so the fastener structure needs special strengthening measures to ensure safety in use.

[0003] At present, there are several typical structure types of existing freight railway fasteners; pre-embedded iron seat type fastener adopts pre-embedded iron seat to be embedded in the sleeper during sleeper production process, has high structural strength, strong connection ability and bearing capacity. The non-shoulder or ordinary transverse shoulder type fastener adopts nylon sleeve pipe to be embedded in the sleeper and then connected by bolts, the fastener is a flexible split type structure, which is simple in structure, convenient to maintain and repair, and easy to maintain the geometry and position of the clamping part. The combined bidirectional limiting fastener is provided with a wedge-shaped bidirectional limiting shoulder, and is combined by an iron pad and an iron seat, the iron pad supports the rail, the iron seat supports the shoulder, and the two are connected twice to form a fastener system, the connection structure is stable, and the working state of the fastener is easy to maintain.

[0004] The pre-embedded iron seat type fastener adopts pre-embedded iron seat to be embedded in the sleeper, which belongs to a permanent structure, and is not convenient to maintain and repair once damaged, and is not convenient to use in later period, and the sleeper needs to be removed and recast, and the flexible non-split type fastener has relatively weak distance adjustment capacity, which is not convenient for the demand of large adjustment of freight railway. The non-shoulder or ordinary transverse shoulder type fastener bears longitudinal or longitudinal and transverse shear force by anchor bolts, and the bolts are prone to be sheared under the action of additional force such as large axle load of freight train, small radius curve or train starting and stopping. The combined bidirectional limiting fastener has a complex structure, is prone to separation after a long time of operation, and the fastener structure is complex and not convenient to maintain and repair.

[0005] The freight railway fastener takes different strengthening measures to meet the strength of the fastener, but also has obvious shortcomings, and as the operation mileage increases, the existing fastener has poor adaptability and is inconvenient to replace when the fastener system needs to be updated and upgraded.

[0006] At present, the Chinese invention patent with the publication number CN112779824A discloses a non-shoulder fastener, which comprises: a clamping component symmetrically arranged on both sides of the rail and used for clamping the shoulder surface of the rail; the clamping component comprises: an iron shoulder detachably connected between the sleeper and the iron shoulder, an insulating rail spacing block arranged between the iron shoulder and the rail, one end of the insulating rail spacing block clamped on the shoulder surface of the rail, and the other end pressed against the iron shoulder; a spring strip detachably mounted on the iron shoulder, one end of the spring strip pressed against the insulating rail spacing block, and the other end pressed against the iron shoulder; and a rail pad arranged between the sleeper and the rail. The non-shoulder fastener has poor adaptability and is inconvenient to replace.

[0007] Therefore, it is necessary to develop a freight railway track fastener with high structural strength and strong adaptability, which is the key to solve the above technical problems. SUMMARY

[0008] In view of the defects and deficiencies in the above background art, the present application is improved and innovated, aiming to provide a freight railway track fastener with simple structure, convenient replacement and strong adaptability, which is convenient for on-site implementation, can greatly reduce the maintenance and repair workload, reduce the engineering risk and investment, and achieve better engineering quality.

[0009] Another object of the present application is to ensure the safety and stability of the fastener under heavy load of heavy axle load railway, to ensure that the fastener system has sufficient adjustment capacity during operation, and the engineering cost is reasonable, suitable for large-scale popularization and use.

[0010] To solve the above problems and achieve the above invention purposes, the freight railway track fastener of the present application is realized by adopting the following design structure and adopting the following technical scheme:

[0011] A freight railway track fastener comprises:

[0012] A sleeper (1) is provided with a rail bearing groove (11) on the upper side;

[0013] A combined sleeve (2) is symmetrically connected in the sleeper (1) below the two ends of the rail bearing groove (11);

[0014] An adjusting pad assembly (3) is arranged on the upper surface of the rail bearing groove (11);

[0015] An iron pad (4) is arranged above the adjusting pad assembly (3);

[0016] A clamping assembly (5) is symmetrically arranged above the two ends of the iron pad (4);

[0017] A rail pad assembly (6) is arranged on the iron pad (4) between the two clamping assemblies (5);

[0018] A gauge block (7) is arranged on both sides of the steel rail (9);

[0019] An anchoring assembly (8) is fastened and connected in the two combined sleeves (2) through the two ends of the iron pad (4) and the adjusting pad assembly (3);

[0020] Among them, one end of the gauge block (7) is buckled on the buckling component (5) at the corresponding end, and the other end of the gauge block (7) is buckled on the rail (9) at the corresponding side.

[0021] Preferably, the adjusting pad assembly (3) includes:

[0022] An insulating coupling pad (31), the insulating coupling pad (31) is connected to the upper surface of the rail support groove (11);

[0023] An under-plate height-adjusting pad (32), the under-plate height-adjusting pad (32) is oppositely arranged at both ends of the insulating coupling pad (31).

[0024] Preferably, the insulating coupling pad (31) includes an insulating pad and bending parts symmetrically connected to both ends of the insulating pad, and the bending parts are adapted to both ends of the rail support groove (11); among them, long circular holes of the insulating coupling pad are penetrated through the middle parts of both ends of the insulating pad, and scales are further arranged in the middle parts of both sides of the insulating pad.

[0025] Preferably, the under-plate height-adjusting pad (32) is integrally in an inverted "L" shape structure, and a long circular hole of the under-plate height-adjusting pad adapted to the long circular hole of the insulating coupling pad is penetrated through the middle part of the under-plate height-adjusting pad (32) near the bending part; among them, the width of the bending part of the under-plate height-adjusting pad (32) gradually becomes wider from one end to the other end.

[0026] Preferably, long circular holes of the tie plate (4) are penetrated through the middle parts of both ends, and buckling component mounting holes for mounting the buckling component (5) are arranged on the tie plate (4) inside the two long circular holes of the tie plate; among them, the tie plate (4) is integrally in a parallelogram shape structure and is matched with the shoulder of the sleeper (1).

[0027] Preferably, the buckling component (5) includes:

[0028] A buckling frame (51), the buckling frame (51) is connected above the buckling component mounting hole of the tie plate (4);

[0029] A spring clip (52), the spring clip (52) is connected above the buckling frame (51);

[0030] A T-shaped bolt (53), the T-shaped bolt (53) passes through the buckling frame (51), the spring clip (52) and the anti-rotation washer (54) from bottom to top and is locked by a locknut (55).

[0031] Preferably, the gauge block (7) includes:

[0032] A pressing plate (71), one end of the pressing plate (71) is connected to the shoulder surface of the rail (9);

[0033] The clamping block (72) is connected with the clamping frame (51) at one end, and is fixedly connected with the pressing plate (71) at the other end.

[0034] The pressing plate (71) is in a whole " " shape structure, and the clamping block (72) is provided with a recessed clamping hole at one end which is matched with the clamping frame (51).

[0035] Preferably, the combined sleeve (2) comprises a sleeve body and at least one reinforcing ring arranged on the sleeve body, wherein the sleeve body is internally provided with an internally threaded section.

[0036] Preferably, the rail pad assembly (6) comprises a rail height adjustment pad (61) and a rail elastic pad (62) arranged from bottom to top.

[0037] Preferably, the anchoring assembly (8) comprises an anchoring bolt (81) and a heavy spring washer (82), wherein the anchoring bolt (81) is sequentially locked and connected in the combined sleeve (2) through the heavy spring washer (82), the iron pad long circular hole, the pad height adjustment pad long circular hole and the insulation coupling pad long circular hole.

[0038] The utility model discloses compared with prior art has produced beneficial effect is:

[0039] 1. The utility model discloses simple structure, convenient to replace, strong adaptability is convenient for on -the -spot implementation can reduce the maintenance workload greatly, reaches reduced engineering risk and investment, realizes more optimal engineering quality.

[0040] 2. The utility model discloses can guarantee the safety and stability of fastener under the heavy load railway load of big axle load, guarantees the fastener system in the operation period to have sufficient adjustment ability, and the engineering cost is reasonable simultaneously, is suitable for large -scale popularization and use.

[0041] 3. The utility model discloses the gauge block of rail can be adjusted according to specific installation condition, to satisfy the limiting demand of steel rail, and the gauge block adopts the design of different thickness simultaneously, can be configured with different number gauge block according to the actual position of steel rail.

[0042] 4. The utility model discloses the pad assembly (6) of rail can be adjusted according to specific installation condition, to satisfy the installation demand of steel rail.

[0043] 5. The utility model discloses a plate under height -adjusting backing plate (32) adopts the design of assembled adjusting backing plate, and the transverse and bending part of plate under height -adjusting backing plate all have different specifications thickness, can select different specifications according to the upper structure adjustment demand, equivalent to realize the two -way adjustment of the size and position of the sleeper groove, and then realize the overall adjustment to the fastener and the position of the rail, and the assembled structure is convenient to install and use when the rail cannot be lifted during the operation period, and the central symmetry of parallelogram is utilized, and left and right can be exchanged and used, convenient for the selection of the scene during the operation period;

[0044] 6. The utility model discloses an insulating coupling backing plate (31) and plate under height -adjusting backing plate (32) and iron backing plate (4) all are equipped with long circular hole, can better adapt the deviation of drilling hole;

[0045] 7. The utility model discloses a plate under height -adjusting backing plate (32) is equipped with different specifications, can configure different adjusting backing plate according to the different position of the shoulder;

[0046] 8. The utility model discloses the middle part both sides of insulating coupling backing plate (31) are equipped with scale line, can conveniently adjust the installation position. DRAWINGS

[0047] The specific embodiment of the utility model will be explained in further detail below in combination with the drawings, wherein:

[0048] Figure 1 It is one of the use state diagram of the utility model;

[0049] Figure 2 It is the second use state diagram of the utility model;

[0050] Figure 3 It is Figure 2 The sectional view of A-A shown in the figure;

[0051] Figure 4 It is the explosion drawing of the utility model;

[0052] Figure 5 It is the structure schematic diagram of insulating coupling backing plate (31) part of the utility model;

[0053] Among them, the figure mark: 1 - sleeper, 11 - rail bearing groove;

[0054] 2 - combined sleeve;

[0055] 3 - adjusting backing plate assembly, 31 - insulating coupling backing plate, 32 - plate under height -adjusting backing plate,

[0056] 4 - iron backing plate;

[0057] 5 - buckling assembly, 51 - buckling frame, 52 - elastic strip, 53 - T bolt, 54 - anti -rotation washer, 55 - lock nut;

[0058] 6 - rail pad assembly, 61 - rail height adjustment pad, 62 - rail elastic pad;

[0059] 7 - gauge block, 71 - pressing plate, 72 - clamping block;

[0060] 8 - anchoring assembly, 81 - anchoring bolt, 82 - heavy spring washer;

[0061] 9 - steel rail. DETAILED DESCRIPTION

[0062] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the technical solutions of the utility model will be described in further detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and embodiments.

[0063] As shown in Figures 1 to 5 , a freight railway track fastener comprises:

[0064] a sleeper 1, the sleeper 1 is provided with a rail-accepting groove 11 on the upper side;

[0065] a combined sleeve 2, the combined sleeve 2 is symmetrically connected in the sleeper 1 below both ends of the rail-accepting groove 11;

[0066] an adjustment pad assembly 3, the adjustment pad assembly 3 is arranged on the upper surface of the rail-accepting groove 11;

[0067] an iron pad 4, the iron pad 4 is arranged above the adjustment pad assembly 3;

[0068] a clamping assembly 5, the clamping assembly 5 is symmetrically arranged above both ends of the iron pad 4;

[0069] a rail pad assembly 6, the rail pad assembly 6 is arranged on the iron pad 4 between the two clamping assemblies 5;

[0070] a gauge block 7, the gauge block 7 is arranged on both sides of the steel rail 9 respectively;

[0071] an anchoring assembly 8, the anchoring assembly 8 is fastened in the two combined sleeves 2 respectively through both ends of the iron pad 4 and the adjustment pad assembly 3;

[0072] wherein one end of the gauge block 7 is clamped on the corresponding end of the clamping assembly 5, and the other end of the gauge block 7 is clamped on the corresponding side of the steel rail 9.

[0073] Further, as shown in Figure 4 and Figure 5 , the adjustment pad assembly 3 comprises:

[0074] An insulating coupling base plate 31 is connected to the upper surface of the rail groove 11.

[0075] A plate under heightening base plate 32 is oppositely arranged at both ends of the insulating coupling base plate 31.

[0076] Specifically, as shown in Figure 4 and Figure 5 , the insulating coupling base plate 31 comprises an insulating base plate and a bending part symmetrically connected at both ends of the insulating base plate, which is adapted to both ends of the rail groove 11; wherein the middle part of both ends of the insulating base plate is provided with an insulating coupling base plate long circular hole, and the middle part of both sides of the insulating base plate is further provided with a scale.

[0077] In the utility model, the insulating coupling base plate 31 is in the shape of a parallelogram as a whole.

[0078] Specifically, as shown in Figure 4 , the plate under heightening base plate 32 is in the shape of a "factory" as a whole, and the middle part of the plate under heightening base plate 32 near the bending part is further provided with a plate under heightening base plate long circular hole which is adapted to the insulating coupling base plate long circular hole, wherein the width of the bending part of the plate under heightening base plate 32 gradually widens from one end to the other end.

[0079] In the utility model, the plan view of the two plate under heightening base plates 32 connected together is in the shape of a parallelogram; the plate under heightening base plate 32 is combined with polyethylene and stainless steel, and in the normal case, a non-metal material is used, and a metal structure is used when the structure is too thin.

[0080] Further, as shown in Figure 3 and Figure 4 , the middle part of both ends of the iron base plate 4 is provided with an iron base plate long circular hole, and the iron base plate 4 inside the two iron base plate long circular holes is provided with a buckle pressing assembly mounting hole for mounting the buckle pressing assembly 5, wherein the iron base plate 4 is in the shape of a parallelogram as a whole and is matched with the shoulder of the sleeper 1.

[0081] Further, as shown in Figure 4 , the buckle pressing assembly 5 comprises:

[0082] A buckle pressing frame 51 is connected above the buckle pressing assembly mounting hole of the iron base plate 4;

[0083] A spring strip 52 is connected above the buckle pressing frame 51;

[0084] A T-shaped bolt 53 passes through the buckle pressing frame 51, the spring strip 52 and the anti-rotation washer 54 from bottom to top and is locked by the lock nut 55.

[0085] Further, as shown in Figure 4 , the gauge block 7 comprises:

[0086] The pressing plate 71 is connected with the shoulder surface of the rail 9 at one end;

[0087] The clamping block 72 is connected with the clamping groove of the clamping frame 51 at one end, and is fixedly connected with the pressing plate 71 at the other end;

[0088] The pressing plate 71 is in a whole '' shape structure, and the clamping block 72 is provided with a recessed clamping groove at one end.

[0089] In the utility model, the gauge block 7 is composed of nylon and stainless steel, and the gauge block 7 is provided with one or two symmetric designs according to actual use requirements.

[0090] Further, as shown in the figure, Figure 4 The combined sleeve 2 comprises a sleeve body and at least one reinforcing ring arranged on the sleeve body, wherein the sleeve body is internally provided with an internally threaded section.

[0091] Further, as shown in the figure, Figure 4 The rail underlay plate assembly 6 comprises a rail underlay heightening pad 61 and a rail underlay elastic pad 62 arranged from bottom to top.

[0092] Still further, as shown in the figure, Figure 4 Figure 4 The anchoring assembly 8 comprises an anchoring bolt 81 and a heavy spring washer 82, wherein the anchoring bolt 81 is sequentially locked and connected in the combined sleeve 2 after passing through the heavy spring washer 82, the long circular hole of the iron pad, the long circular hole of the underlay heightening pad and the long circular hole of the insulation coupling pad.

[0093] In summary, the more specific embodiment of the utility model is:

[0094] The freight railway track fastener with the above design structure needs to be installed as a backup before use.

[0095] The specific use steps are as follows:

[0096] Step 1. Remove the dirt on the rail bearing surface of the sleeper, remove the embedded sleeve plastic cover, remove the impurities and accumulated water in the sleeve, and inject appropriate amount of special protective grease for railways in the sleeve;

[0097] Step 2. Lay the insulation coupling pad in the middle position of the rail bearing platform;

[0098] Step 3. Place the iron pad, and the center of the bolt hole of the iron pad should be aligned with the center of the embedded sleeve;

[0099] Step 4. Put the anchor bolt sleeve on the spring washer, and smear the railway special protective grease on the threaded part, then screw into the sleeve, and the tightening torque is about 200-250 N.m;

[0100] Step 5. Place the rail pad plate in the middle of the rail groove of the iron pad plate;

[0101] Step 6. Lay the steel rail;

[0102] Step 7. Place the gauge block, and install No. 9 on both sides of the steel rail during initial installation;

[0103] Step 8. Place the T-shaped bolt, elastic strip, anti-rotation washer, and nut, smear oil on the threaded part of the T-shaped bolt, then tighten the nut and fasten the elastic strip. The fastening of the elastic strip is based on the contact between the lower jaw of the front end of the middle part of the elastic strip and the gauge block, and the gap is not greater than 1 mm. The elastic strip should not be too tight or the gap should not be too large. At this time, the tightening torque is 120-140 N.m;

[0104] Step 9. Check the gauge and the track direction. If it does not meet the requirements, replace the gauge block of different number;

[0105] Step 10. Check the empty hanging of the steel rail, the height and the level. If it does not meet the requirements, put the appropriate thickness of the rail height adjusting pad plate. Thus, the installation of the utility model is completed. After the installation is completed and the stability and reliability are checked, it can be put into use;

[0106] Finally, as time goes on, when the utility model needs to be repaired and replaced or is not needed to be used, the operator only needs to disassemble the utility model.

[0107] The specific disassembly steps are:

[0108] Step 1, disassemble the nut, and remove the anti-rotation washer, elastic strip, T-shaped bolt, and gauge block;

[0109] Step 2, use the track lifting equipment to lift the steel rail;

[0110] Step 3, take out the rail pad plate and the rail height adjusting pad plate;

[0111] Step 4, disassemble the anchor bolt, and remove the spring washer;

[0112] Step 5, remove the iron pad plate, the iron pad plate height adjusting pad plate, and the coupling pad plate.

[0113] In the utility model, the overall shape of the insulation coupling pad plate 31 and the iron pad plate 4 is a parallelogram. The insulation coupling pad plate 31 matches the tie shoulder. When a small radius curve is encountered, according to the curve radius, the train passing speed, and the set super-elevation value, there will be a transverse force inward or outward between the wheel and the rail. The force is transmitted to the shoulder after the action of the steel rail 9 and the clamping assembly 5, and the shoulder bears the transverse force.

[0114] When encountering a large slope or when the train starts and stops, the steel rail 9 will bear a longitudinal force, and the force is borne by the shoulder of the angle sleeper 1 after passing through the track fastener, effectively avoiding the defects of longitudinal unlimiting or single limiting of the "rectangle" or "ladder" structure.

[0115] The wheel-rail force is mainly vertical force, and irregular vibration caused by poor wheel-rail relationship will frequently impact the track fastener. High-specification anchor bolts 81 are matched with heavy spring washers 82, and the lower part of the anchor bolt 81 is screwed with the combined sleeve 2 in the sleeper 1. The lock nut 55 on the upper part of the clamping assembly 5 fastens the clamping frame 51 and the elastic strip 52 on the T-shaped bolt 53, and prevents loosening through the anti-rotation washer 54.

[0116] Therefore, the three-way force on the steel rail that may be generated during the train operation is transmitted to the track fastener by the steel rail 9, and is borne by the combined system of the track fastener and the sleeper 1, thereby ensuring better stability of the track structure.

[0117] In the utility model, the positioning tool is made by the lower height adjusting pad 32 of the fastener plate, the scale line is made on the top of the lower height adjusting pad 32, the rail bottom width of the steel rail 9 is 150mm, in the normal installation state, the two sides of the rail bottom should be respectively aligned with the 75mm wide position of the adjusting pad, therefore, the 75mm wide position of the lower height adjusting pad 32 of the adjusting pad is defined as the 0 scale line, each scale line is spaced by 1cm, and the short scale line with 1mm interval is made in the middle of the two scale lines.

[0118] After the pair of positioning and insulation coupling pads 31 are tried to be installed, the insulation sleeve hole center position of the combined sleeve 2 is determined according to the long circular hole positions of the two insulation coupling pads 31, and the insulation sleeve is taken down after calibration to be drilled;

[0119] After the pair of positioning and insulation coupling pads 31 are tried to be installed, the scale of the corresponding insulation coupling pad 31 of the rail bottom is determined, that is, the relative position relationship between the steel rail 9 and the shoulder of the sleeper 1 is obtained. When the scale is positive, it proves that the steel rail 9 deviates to the side, and the number of the gauge block 7 and the insulation coupling pad 31 should be reduced, and the number of the reduced number is the scale value. When the scale is negative, it proves that the steel rail 9 deviates to the opposite side, and the number of the gauge block 7 and the insulation coupling pad 31 should be increased, and the number of the increased number is the scale value. The larger the number is, the larger the corresponding component specification is.

[0120] Finally, it needs to be explained that the above is only the preferred embodiment of the present application, and is not other forms of the present application limit, any skilled in the art of the technical personnel can use the disclosed technology to change or modify the equivalent changes of the equivalent embodiments. But all without departing from the present application technical scheme content, according to the technical essence of the present application to the above examples of any simple modification, equivalent changes and modification, still belongs to the present application technical scheme protection scope.

Claims

1. A freight railway track fastener, characterized in that, Comprising: A sleeper (1), with a rail seat (11) formed on the upper side of the sleeper (1); A combined sleeve (2), symmetrically connected inside the sleeper (1) below both ends of the rail seat (11); An adjustment pad assembly (3), arranged on the upper surface of the rail seat (11); A base plate (4), arranged above the adjustment pad assembly (3); A fastening assembly (5), symmetrically arranged at both ends above the base plate (4); An under-rail pad assembly (6), arranged on the base plate (4) between the two fastening assemblies (5); Gauge blocks (7), respectively arranged on both sides of the rail (9); An anchoring assembly (8), respectively passing through both ends of the base plate (4) and the adjustment pad assembly (3) and tightly connecting inside the two combined sleeves (2); Wherein, one end of the gauge block (7) is fastened to the corresponding fastening assembly (5), and the other end of the gauge block (7) is fastened to the corresponding side of the rail (9).

2. The freight railway track fastener according to claim 1, characterized in that, The adjustment pad assembly (3) includes: An insulating coupling pad (31), connected to the upper surface of the rail seat (11); A sub-board height-adjusting pad (32), relatively arranged at both ends of the insulating coupling pad (31).

3. A freight railway track fastener according to claim 2, characterized in that, The insulating coupling pad (31) includes an insulating pad and bending parts symmetrically connected to both ends of the insulating pad, and the bending parts are adapted to both ends of the rail seat (11); wherein, oblong holes of the insulating coupling pad are formed through the middle parts of both ends of the insulating pad, and scales are further arranged in the middle parts of both sides of the insulating pad.

4. A freight railway track fastener according to claim 2, characterized in that, The sub-board height-adjusting pad (32) is integrally in an "L" - shaped structure, and an oblong hole of the sub-board height-adjusting pad adapted to the oblong hole of the insulating coupling pad is formed through the middle part of the sub-board height-adjusting pad (32) near the bending part; wherein, the width of the bending part of the sub-board height-adjusting pad (32) gradually becomes wider from one end to the other end.

5. A freight railway track fastener according to claim 1, characterized in that, Oblong holes of the base plate (4) are formed through the middle parts of both ends, and fastening assembly mounting holes for mounting the fastening assembly (5) are formed in the base plate (4) inside the two oblong holes of the base plate; wherein, the base plate (4) is integrally in a parallelogram structure and matches the shoulder of the sleeper (1).

6. A freight railway track fastener according to claim 1, characterized in that, The fastening assembly (5) includes: A fastening frame (51), connected above the fastening assembly mounting hole of the base plate (4); A spring clip (52), connected above the fastening frame (51); A T-shaped bolt (53), passing through the fastening frame (51), the spring clip (52) and an anti-rotation washer (54) from bottom to top and locked by a lock nut (55).

7. A freight railway track fastener according to claim 1, characterized in that, The gauge block (7) includes: A pressing plate (71), one end of which is connected to the shoulder surface of the rail (9); A clamping block (72), one end of which is clamped and connected to the fastening frame (51), and the other end of the clamping block (72) is fixedly connected to the pressing plate (71); Wherein, the pressing plate (71) is integrally in a "﹁" - shaped structure, and a concave clamping opening adapted to the fastening frame (51) is formed at one end of the clamping block (72).

8. A freight railway track fastener according to claim 1, characterized in that, The combined sleeve (2) includes a sleeve body and at least one reinforcing ring disposed on the sleeve body, wherein the sleeve body is provided with an internal thread section.

9. A freight railway track fastener according to claim 1, characterized in that, The rail pad assembly (6) includes a rail height adjustment pad (61) and a rail elastic pad (62) arranged from bottom to top.

10. A freight railway track fastener according to claim 1, characterized in that, The anchoring assembly (8) includes an anchoring bolt (81) and a heavy-duty spring washer (82). The anchoring bolt (81) passes through the heavy-duty spring washer (82), the elongated hole of the iron pad, the elongated hole of the lower plate height adjustment pad, and the elongated hole of the insulating coupling pad in sequence and is then locked in the combined sleeve (2).

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