Narrow-gauge 50kg / m steel rail 6 # single turnout

Abstract

The invention provides a narrow-gauge 50kg / m steel rail 6 single turnout, which comprises a concrete switch tie, and a switch group, a frog, a rail support sliding bed backing plate assembly and a III-type switch tie bolt assembly which are arranged on the concrete switch tie, the rail support sliding bed backing plate assembly is arranged between the concrete switch tie and the switch group, and the III-type switch tie bolt assembly is fixedly connected with the concrete switch tie; the rail support sliding bed backing plate assembly comprises a rail support sliding bed backing plate used for installing a straight stock rail and a curved stock rail and a sliding bed table rail bearing surface used for installing a straight switch rail and a curved switch rail, and rail gauge adjusting pieces are arranged between the straight stock rail and the rail support sliding bed backing plate and between the curved stock rail and the rail support sliding bed backing plate. The radius of a guide curve can be increased, and the overall length of the turnout is shortened; the point end of the switch rail is of a hidden point type structure, the point end of the switch rail can be protected from being punctured by wheels, and the switch rail can keep good vertical stability under the action of dynamic loads. The adjustable rail brace is arranged on the outer side of the stock rail, stability of the stock rail is enhanced, and camber is reduced. Railway operation safety is enhanced, and service life of steel rails and wheels is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of railway equipment, and in particular to a No. 6 single turnout for narrow gauge 50kg / m steel rails. Background Art

[0002] With the development of the times, the needs of society, and the trend of global integration, the original standard gauge (1435mm) domestic passenger single-opening turnout is no longer suitable for certain scenarios and regions. Therefore, it is necessary to design a single-opening turnout that can meet the requirements of non-standard gauge turnouts. Summary of the invention

[0003] The object of the present invention is to provide a narrow gauge 50kg / m rail No. 6 single turnout in view of the deficiencies of the prior art.

[0004] The specific technical solutions are as follows:

[0005] A narrow gauge 50kg / m steel rail No. 6 single turnout, comprising a concrete turnout sleeper, a switch group arranged thereon, a frog, a rail support sliding mattress plate assembly and a type III turnout sleeper bolt assembly, wherein the rail support sliding mattress plate assembly is installed between the concrete turnout sleeper and the switch group, and the type III turnout sleeper bolt assembly is fixedly connected to the concrete turnout sleeper; the switch group comprises a straight basic rail, a curved basic rail, a straight point rail, a curved point rail and a guide rail, wherein the straight basic rail cooperates with the curved point rail, the curved basic rail cooperates with the straight point rail, and ... The component includes a rail support sliding bed plate for installing the straight basic rail and the curved basic rail, and a slide bed bearing rail surface for installing the straight point rail and the curved point rail. A track gauge adjustment plate is provided between the straight basic rail and the curved basic rail and the rail support sliding bed plate; a concave milling groove is provided on the outer bearing rail surface of the straight basic rail and the curved basic rail, and an adjustable rail support is installed thereon; teeth are provided on the end surface of the adjustable rail support, and the straight basic rail and the curved basic rail are fitted with the waist of the straight basic rail and the curved basic rail to fix the outer side of the straight basic rail and the curved basic rail; the adjustable rail support is buckled by a B-type spring bar separate adjustable fastener.

[0006] Optionally, the concrete switch sleepers are arranged parallel to each other, the straight basic rail, the curved basic rail, the straight point rail, the curved point rail, the guard rail and the frog are installed above the concrete switch sleepers, the straight basic rail and the straight point rail are arranged in parallel, the curved basic rail is arranged on the outside of the straight point rail, the curved point rail is arranged between the straight basic rail and the straight point rail, the curved basic rail and the curved point rail have the same running direction, the curved point rail line shape intersects with the straight basic rail line shape and the straight point rail line shape, the frog is arranged at the intersection of the curved point rail line shape and the straight point rail line shape, the frog connects the end of the curved point rail and the end of the straight point rail, guard rails are arranged on both sides of the frog and on the inner side of the straight basic rail at the corresponding position of the frog and on the inner side of the curved basic rail at the corresponding position of the frog, the front end of the straight point rail is movably in close contact with the curved basic rail, and the front end of the curved point rail is movably in close contact with the straight basic rail.

[0007] Optionally, the Type III switch sleeper bolt assembly includes a Type III switch sleeper bolt, and the Type III switch sleeper bolt is equipped with a spring washer, a flat washer and a nylon buffer sleeve.

[0008] Optionally, the straight point rail and the curved point rail are provided with a traction point, and the traction point has a travel range of 152 mm.

[0009] Optionally, the rail-supported sliding mattress plate is made of metal material Q235.

[0010] Optionally, the frog is a high manganese steel integrally cast frog.

[0011] Optionally, the connection between the prefabricated vault and the prefabricated slab is cast on site to form a seamless connection, thereby improving the stability of the overall structure.

[0012] Optionally, the guardrail adopts a split groove guardrail and is manufactured using UIC33 steel rail.

[0013] Optionally, the straight point rail and the curved point rail can slide on the rail-supported sliding mattress plate.

[0014] Optionally, the guard rail is 12 mm higher than the base rail.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention can accurately realize the track conversion function of the narrow gauge 50kg / m steel rail No. 6 single turnout through the precise design and coordinated work of the switch group, the switch, the guard rail and other components. The train can travel in the predetermined line direction. Whether it is switching from a straight track to a curved track or switching in the opposite direction, it can be completed smoothly and accurately, greatly improving the dispatching flexibility of railway transportation. In the entire turnout structure, the reasonable installation and coordination of various components ensure the stability of train travel. The type III turnout sleeper bolt assembly firmly connects the concrete turnout sleeper with other components to prevent relative displacement between components. The support and stabilization of the track components by the rail support sliding mattress plate assembly enables the entire turnout structure to maintain a stable geometric shape when the train passes frequently, reduces the frequency of maintenance and adjustment, and reduces the maintenance cost. Due to the reasonable coordination and stable connection between the various components, the wear and damage between the components are reduced. The buffering and protective effect of the rubber pad on the roadbed and the turnout sleeper also prolongs the service life of the roadbed and the turnout sleeper, further improving the economy of the entire turnout system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the No. 6 single turnout for narrow gauge 50kg / m rails;

[0018] Figure 2 This is a schematic diagram of the structure of the No. 6 single turnout for narrow gauge 50kg / m rails;

[0019] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0020] Figure 4 This is a schematic diagram showing the structure of the Type III turnout tie bolt assembly in the No. 6 single turnout with narrow gauge 50kg / m rail.

[0021] Reference numerals:

[0022] 1. Concrete switch sleeper; 2. Switch assembly; 21. Straight base rail; 22. Curved base rail; 23. Straight point rail; 24. Curved point rail; 25. Guide rail; 3. Switch fork; 4. Guard rail; 5. Rail support slide bed plate assembly; 51. Rail support slide bed plate; 52. Slider bed bearing rail surface; 53. Track gauge adjustment plate; 54. Adjustable rail support; 55. B-type spring bar separate adjustable fastener; 551. T-bolt; 552. B-type spring bar; 553. Adjusting wedge; 554. Hexagonal nut; 555. Locking nut; 6. Type III switch sleeper bolt assembly; 61. Type III switch sleeper bolt; 62. Spring washer; 64. Flat washer; 64. Nylon buffer sleeve; 7. Iron pad; 8. Rubber pad. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0026] The narrow gauge 50kg / m rail No. 6 single turnout provided in the present invention is referred to Figure 1-Figure 4 , a concrete switch sleeper 1, a group of switches arranged thereon, a group of frogs 3, a guard rail 4, a rail support sliding mattress plate assembly 5 and a type III switch sleeper bolt assembly 6, the rail support sliding mattress plate assembly 5 is installed between the concrete switch sleeper 1 and the switch group 2, and the type III switch sleeper bolt assembly 6 is fixedly connected to the concrete switch sleeper 1; the switch group 2 includes a straight basic rail 21, a curved basic rail 22, a straight point rail 23, a curved point rail 24 and a guide rail 25, the straight basic rail 21 cooperates with the curved point rail 24, the curved basic rail 22 cooperates with the straight point rail 23, and the rail support sliding mattress plate assembly 5 includes a straight basic rail 21 for installing 1 and the rail support slide bed plate 51 of the curved basic rail 22, and the slide bed bearing rail surface 52 for installing the straight point rail 23 and the curved point rail 24. The straight basic rail 21 and the curved basic rail 22 and the rail support slide bed plate 51 are provided with a track gauge adjustment piece 53; the outer bearing rail surfaces of the straight basic rail 21 and the curved basic rail 22 are provided with a concave milling groove, on which an adjustable rail support 54 is installed; the end surface of the adjustable rail support 54 is provided with teeth, and is fitted with the straight basic rail 21 and the curved basic rail 22 waist to fix the outer side of the straight basic rail 21 and the curved basic rail 22; the adjustable rail support 54 is buckled by a B-type spring bar separated adjustable fastener 55.

[0027] In this embodiment, refer to Figure 1-Figure 2, the installation of the straight basic rail 21, the curved basic rail 22, the straight point rail 23, the curved point rail 24 and the guide rail 25 in the switch group 2 needs to be carried out strictly according to the design. For example, the straight basic rail 21 is matched with the curved point rail 24. During installation, a smooth transition must be ensured at the interface between the two to ensure the stability of the train during travel. When the curved basic rail 22 is matched with the straight point rail 23, attention must also be paid to the accuracy of their matching so that the point rail can be accurately moved to the predetermined position during the switching operation. The installation position of the rail support sliding mattress plate assembly 5 is between the concrete switch sleeper 1 and the switch group 2. Among them, the rail support sliding mattress plate 51 is used to install the straight basic rail 21 and the curved basic rail 22. During the installation process, it is necessary to accurately set the gauge adjustment plate 53 between the straight basic rail 21 and the curved basic rail 22 and the rail support sliding mattress plate 51. For example, during the initial installation, a gauge adjustment piece 53 of appropriate thickness is selected for installation according to the designed track gauge, and in the subsequent debugging and maintenance process, the gauge adjustment piece 53 can be adjusted according to the actual situation to ensure that the track gauge always meets the standard. The slide bed support rail surface 52 is used to install the straight point rail 23 and the curved point rail 24, and it is necessary to ensure that the point rail can slide smoothly on the rail support slide bed plate 51. When installing the straight point rail 23 and the curved point rail 24, it is necessary to ensure their fit with the slide bed support rail surface 52 to avoid the situation where the gap is too large or too small. If the gap is too large, it may cause the point rail to shake and affect the safety of train driving. If the gap is too small, it may cause the point rail to get stuck and cannot switch normally. A concave milling groove is provided on the outer support rail surface of the straight base rail 21 and the curved base rail 22, and an adjustable rail support 54 is installed on the concave milling groove. When installing the adjustable rail support 54, ensure that the teeth on the end face of the adjustable rail support 54 fit closely with the waist of the straight basic rail 21 and the curved basic rail 22, so as to effectively fix the outer side of the straight basic rail 21 and the curved basic rail 22. Then, the adjustable rail support 54 is buckled by the B-type spring bar split adjustable fastener 55 to make the entire structure more stable. During the buckling process, attention should be paid to the installation force of the B-type spring bar 552. Too much force may cause damage to the components, and too little force may not achieve a stable effect.

[0028] The coordination among the straight base rail 21, the curved base rail 22, the straight point rail 23 and the curved point rail 24 in the switch group 2 is the core of realizing the track conversion function. When the train needs to change the direction of travel, for example, from the straight track to the curved track, the straight point rail 23 or the curved point rail 24 is driven to move by the control device. The precise coordination between the straight base rail 21 and the curved point rail 24, and the curved base rail 22 and the straight point rail 23 enables the point rail to accurately guide the train wheels into the corresponding track. This coordination is based on strict geometric design. The line shape of the point rail and the relative position relationship with the base rail are accurately calculated to ensure the stability and safety of the train during the switching process. The rail support slide bed plate assembly 5 plays a supporting and adjusting role in the entire turnout structure. The rail support slide bed plate 51 supports the straight base rail 21 and the curved base rail 22, and the slide bed bearing rail surface 52 supports the straight point rail 23 and the curved point rail 24. The setting of the gauge adjustment plate 53 allows the gauge of the straight basic rail 21 and the curved basic rail 22 to be adjusted according to actual conditions. This is because during the use of the turnout, the gauge may change due to factors such as train vibration and temperature changes. By adjusting the gauge adjustment plate 53, the gauge can be kept within the specified range to ensure the safety of train travel. The fit of the adjustable rail support 54 with the waist of the straight basic rail 21 and the curved basic rail 22 and the buckling of the B-type spring bar separate adjustable fastener 55 further enhance the stability of the outer side of the basic rail and prevent the basic rail from lateral displacement when the train passes; the III-type switch sleeper bolt assembly 6 connects the concrete switch sleeper 1 with other components to play a role in fixing and stabilizing.

[0029] The B-type spring bar separated adjustable fastener 55 includes a T-bolt 551, a B-type spring bar 552, an adjusting wedge 553, a hexagonal nut 554 and a locking nut 555 arranged on the upper end of the T-bolt 551. The function of the T-bolt 551 is to press the B-type spring bar 552 and the adjusting wedge 553 tightly on the straight basic rail 21 or the curved basic rail 22 to ensure that they can be firmly fixed on the track; by tightening the hexagonal nut 554, the T-bolt 551 can be pressed on the adjustable rail support 54, so as to achieve precise adjustment of the track; finally, the function of the locking nut 555 is to firmly lock the end of the T-bolt 551 to prevent the fastener from loosening due to vibration or impact during the operation of the train, thereby ensuring the safety and stability of the track.

[0030] In this embodiment, refer to Figure 1, the concrete switch sleepers 1 are arranged parallel to each other, the straight basic rail 21, the curved basic rail 22, the straight point rail 23, the curved point rail 24, the guard rail 4 and the frog 3 are installed above the concrete switch sleeper 1, the straight basic rail 21 and the straight point rail 23 are arranged in parallel, the curved basic rail 22 is arranged outside the straight point rail 23, the curved point rail 24 is arranged between the straight basic rail 21 and the straight point rail 23, the curved basic rail 22 and the curved point rail 24 have the same running direction, and the line shape of the curved point rail 24 is the same as that of the straight basic rail The linear type of the rail 21 and the linear type of the straight point rail 23 intersect, and a frog 3 is arranged at the intersection position of the linear type of the curved point rail 24 and the linear type of the straight point rail 23. The frog 3 connects the end of the curved point rail 24 and the end of the straight point rail 23. Guard rails 4 are arranged on both sides of the frog 3, on the inner side of the straight basic rail 21 corresponding to the frog 3, and on the inner side of the curved basic rail 22 corresponding to the frog 3. The front end of the straight point rail 23 is movably and closely attached to the curved basic rail 22, and the front end of the curved point rail 24 is movably and closely attached to the straight basic rail 21.

[0031] Among them, the straight base rail 21 and the straight point rail 23 are arranged in parallel, which is to provide stable guidance when the train runs normally in a straight line. The straight point rail 23 can move relative to the straight base rail 21 under the control of the switch. When switching is not required, the straight point rail 23 and the straight base rail 21 maintain a relatively fixed position, and the train wheels run normally along the straight base rail 21 and the straight point rail 23. The curved base rail 22 is arranged on the outside of the straight point rail 23, and the curved point rail 24 is arranged between the straight base rail 21 and the straight point rail 23. The curved base rail 22 and the curved point rail 24 have the same running direction. This layout is to realize the conversion of the train from a straight track to a curved track. When the train needs to turn, through the operation of the switch, the curved point rail 24 will approach and fit the straight base rail 21 (the front end of the curved point rail 24 is movably and closely attached to the straight base rail 21), guiding the train wheels to transition from the straight base rail 21 to the curved track, and the curved base rail 22 provides outer support and limit for the curved point rail 24 to ensure that the train can run smoothly along the curve. A frog 3 is arranged at the intersection of the curve point rail 24 and the straight line point rail 23, and the frog 3 connects the end of the curve point rail 24 and the end of the straight line point rail 23. The main function of the frog 3 is to realize the conversion and transition of the train wheels between different tracks (such as a straight track and a curve track). When the train passes through the frog 3, the wheels will transition from one track (such as the track where the straight point rail 23 is located) to another track (such as the track where the curve point rail 24 is located). The structural design of the frog 3 can withstand the pressure and impact force when the train wheels pass through, and ensure the smooth transition of the wheels to avoid dangerous situations such as derailment. Guardrails 4 are respectively arranged on both sides of the frog 3, on the inner side of the straight basic rail 21 corresponding to the frog 3, and on the inner side of the curved basic rail 22 corresponding to the frog 3. The main purpose of the guardrail 4 is to prevent the train wheels from derailing when passing through the frog 3. When the train wheels travel to the frog 3 area, due to the complexity of the track structure at the frog 3, if the wheel is subjected to lateral force or the driving track is slightly deviated, the guardrail 4 can limit the lateral movement of the wheel and guide the wheel back to the correct track position to ensure that the train passes through the frog 3 area safely. The concrete switch sleepers 1 are arranged parallel to each other to provide a stable support foundation for the straight basic rail 21, the curved basic rail 22, the straight point rail 23, the curved point rail 24, the guardrail 4 and the frog 3. The parallel arrangement of the concrete switch sleepers 1 ensures that the track components installed above them can maintain a relatively stable positional relationship. The stability of the concrete switch sleepers 1 is crucial to the entire track layout. It needs to withstand the huge pressure transmitted when the train passes, and evenly distribute the pressure to the lower structure such as the roadbed to ensure the stability and safety of the entire track system.

[0032] Reference Figure 3-Figure 4The type III switch sleeper bolt assembly 6 includes a type III switch sleeper bolt 61, and a spring washer 62, a flat washer 64, and a nylon buffer sleeve 64 are installed on the type III switch sleeper bolt 61. The type III switch sleeper bolt assembly 6 is fixedly connected to the concrete switch sleeper 1, and the type III switch sleeper bolt 61 is equipped with a spring washer 62, a flat washer 64, and a nylon buffer sleeve 64. During installation, the nylon buffer sleeve 64 is firstly sleeved on the type III switch sleeper bolt 61, and then the flat washer 64 and the spring washer 62 are installed in sequence, and finally the bolt is screwed into the reserved hole of the concrete switch sleeper 1 and tightened. The function of the spring washer 62 is to prevent the bolt from loosening, and the flat washer 64 can disperse the pressure of the bolt. The nylon buffer sleeve 64 not only plays a certain buffering role, but also helps to protect the concrete switch sleeper 1. The spring washer 62 on the type III switch sleeper bolt 61 uses its elastic characteristics to prevent the bolt from loosening under the condition of train vibration, and the flat washer 64 evenly disperses the pressure of the bolt to prevent the concrete switch sleeper 1 from being damaged due to excessive local pressure. The nylon buffer sleeve 64 plays a buffering role between the bolt and the concrete switch sleeper 1, thereby reducing the impact force on the concrete switch sleeper 1 when the train passes, and extending the service life of the concrete switch sleeper 1.

[0033] The material of the rail support sliding mattress plate 51 is the metal material Q235. When manufacturing the rail support sliding mattress plate 51, the Q235 material must be cut, forged, welded and other processing processes in accordance with relevant metal processing standards. For example, during the cutting process, the accuracy of the cutting size must be ensured, and the error must be controlled within a very small range to ensure that the rail support sliding mattress plate 51 can accurately match other components.

[0034] The straight point rail 23 and the curved point rail 24 are provided with a traction point, and the traction point has a range of 152 mm. When setting the traction point, its position must be accurately determined, and it must be ensured that the traction device can accurately drive the point rail to move a range of 152 mm. For example, when installing the traction device, accurate debugging must be performed to ensure that the pulling direction of the traction device is consistent with the moving direction of the point rail, and the pulling force must be able to meet the requirement that the point rail moves smoothly within the range of 152 mm.

[0035] The straight base rail 21, the curved base rail 22 and the iron pad 7 at the bottom thereof are provided with a rubber pad 8, which can buffer the high-speed impact vibration generated when the vehicle passes through the rail, protect the roadbed and the switch sleeper, and insulate the railway signal system. The thickness, hardness and other parameters of the rubber pad 8 must meet the design requirements to effectively buffer the high-speed impact vibration generated when the vehicle passes through the rail. When installing the rubber pad 8, ensure its fit with the iron pad 7 and the base rail to avoid the situation of uneven local force.

[0036] The frog 3 is set as a high manganese steel integrally cast frog 3, and the high manganese steel has good wear resistance and impact resistance. The high strength and wear resistance of the high manganese steel integrally cast frog 3 can withstand the huge pressure and impact force when the train passes through the frog 3 area. Since the frog 3 is a key part of the train wheel switching track, the stress condition here is complex, and the characteristics of high manganese steel enable it to maintain a stable shape and performance in long-term use. When manufacturing the high manganese steel integrally cast frog 3, the casting process parameters, such as casting temperature, casting speed, etc., must be strictly controlled to ensure the quality of the frog 3. For example, too high a casting temperature may cause defects such as pores inside the frog 3, and uneven casting speed may cause the frog 3 to have an irregular shape. The guardrail 4 adopts a separate grooved guardrail 4 and is 12mm higher than the basic rail. When the train wheel passes through the frog 3, if there is a tendency for the wheel to deviate from the track, the guardrail 4 can prevent the wheel from further deviating in time and guide the wheel back to the normal track, thereby protecting the safe driving of the train.

[0037] The present invention provides a narrow gauge 50kg / m rail No. 6 single turnout, which is used for turnouts with non-standard narrow gauges. The switch of the 50kg / m rail No. 6 single turnout adopts a half-cut 50AT point rail, which can increase the guide curve radius and shorten the overall length of the turnout; the tip of the point rail is a hidden-tip structure, which can protect the tip of the point rail from being punctured by the wheel and enable the point rail to maintain good vertical stability under dynamic load. An adjustable rail support 54 is arranged on the outside of the basic rail to enhance the stability of the basic rail and reduce the camber. The railway operation safety is enhanced and the service life of the rails and wheels is extended. The side of the turnout curved basic rail 22 is transitioned from a 1000mm gauge to a 1015mm gauge by a straight line (2620), which ensures that the tip of the curved stock point rail is a 1015mm gauge. Finally, a circular arc (2500) is transitioned back to a 1000mm gauge on the curved stock guide rail 25 on the side of the curved basic rail 22, which ensures that the tip of the point rail to the end of the guide curve is a 1015mm gauge, and the end of the guide curve is a 1000mm gauge. The straight stock on the side of the curved basic rail 22 is transitioned back to a 1000mm gauge after a straight line.

[0038] The present invention can accurately realize the track switching function of the narrow gauge 50kg / m steel rail No. 6 single turnout through the precise design and coordinated work of the switch group 2, the switch 3, the guard rail 4 and other components. The train can travel in the predetermined line direction, whether it is switching from a straight track to a curved track or switching in the opposite direction, it can be completed smoothly and accurately, greatly improving the scheduling flexibility of railway transportation. In the entire turnout structure, the reasonable installation and coordination of various components ensure the stability of train travel. For example, the effective support and fixation of the track components by the rail support sliding mattress plate assembly 5 ensures that the train will not shake or bump significantly when passing through the turnout. The correct setting of the switch 3 and the guard rail 4 also provides stable driving conditions for the train when passing through the cross track area, reduces the risk of train derailment, and improves the safety of train operation. The design and installation of the III-type switch sleeper bolt assembly 6, the rail support sliding mattress plate assembly 5 and other components effectively improve the stability of the entire turnout structure. The III-type switch sleeper bolt assembly 6 firmly connects the concrete switch sleeper 1 with other components to prevent relative displacement between components. The support and stabilization of the track components by the rail support sliding pad assembly 5 enables the entire turnout structure to maintain a stable geometric shape when trains frequently pass through, reducing the frequency of repairs and adjustments and lowering maintenance costs. Due to the reasonable coordination and firm connection between the components, wear and damage between the components are reduced. For example, the good support of the track components by the rail support sliding pad 51 can reduce the uneven stress on the track components, thereby extending the service life of the track components. The cushioning and protective effect of the rubber pad 8 on the roadbed and switch sleepers also extends the service life of the roadbed and switch sleepers, further improving the economy of the entire turnout system.

[0039] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A narrow gauge 50kg / m rail No. 6 single turnout, characterized in that: The invention comprises a concrete switch sleeper, a switch group, a frog, a rail support sliding mattress plate assembly and a type III switch sleeper bolt assembly, wherein the rail support sliding mattress plate assembly is installed between the concrete switch sleeper and the switch group, and the type III switch sleeper bolt assembly is fixedly connected to the concrete switch sleeper; the switch group comprises a straight basic rail, a curved basic rail, a straight point rail, a curved point rail and a guide rail, wherein the straight basic rail cooperates with the curved point rail, the curved basic rail cooperates with the straight point rail, and the rail support sliding mattress plate assembly comprises a guide rail for installing the straight basic rail. The rail support sliding bed plate of the basic rail and the curved basic rail, and the slide bed bearing rail surface for installing the straight point rail and the curved point rail, a track gauge adjustment plate is provided between the straight basic rail and the curved basic rail and the rail support sliding bed plate; a concave milling groove is provided on the outer bearing rail surface of the straight basic rail and the curved basic rail, and an adjustable rail support is installed thereon; teeth are provided on the end surface of the adjustable rail support, and it fits with the waist of the straight basic rail and the curved basic rail to fix the outer side of the straight basic rail and the curved basic rail; the adjustable rail support is buckled by a B-type spring bar separate adjustable fastener.

2. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 1, characterized in that: The concrete switch sleepers are arranged parallel to each other, the straight basic rail, the curved basic rail, the straight point rail, the curved point rail, the guard rail and the frog are installed above the concrete switch sleepers, the straight basic rail and the straight point rail are arranged in parallel, the curved basic rail is arranged on the outside of the straight point rail, the curved point rail is arranged between the straight basic rail and the straight point rail, the curved basic rail and the curved point rail have the same running direction, the curved point rail line shape intersects with the straight basic rail line shape and the straight point rail line shape, the frog is arranged at the intersection position of the curved point rail line shape and the straight point rail line shape, the frog connects the end of the curved point rail and the end of the straight point rail, guard rails are arranged on both sides of the frog and on the inner side of the straight basic rail corresponding to the frog and on the inner side of the curved basic rail corresponding to the frog, the front end of the straight point rail is movably in close contact with the curved basic rail, and the front end of the curved point rail is movably in close contact with the straight basic rail.

3. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 1, characterized in that: The type III switch sleeper bolt assembly comprises a type III switch sleeper bolt, and the type III switch sleeper bolt is equipped with a spring washer, a flat washer and a nylon buffer sleeve.

4. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 1, characterized in that: The straight point rail and the curved point rail are provided with a traction point, and the traction point has a travel range of 152 mm.

5. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 1, characterized in that: The material of the rail support sliding mattress plate is metal material Q235.

6. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 1, characterized in that: The straight basic rail, the curved basic rail and the iron pad at the bottom are provided with rubber pads, which can buffer the high-speed impact vibration generated when the vehicle passes through the rails, protect the roadbed and switch sleepers, and insulate the railway signal system.

7. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 1, characterized in that: The frog is configured as a high manganese steel integrally cast frog.

8. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 2, characterized in that: The guardrail adopts a split groove guardrail and is made of UIC33 steel rail.

9. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 1, characterized in that: The straight point rail and the curved point rail can slide on the rail support sliding mattress plate.

10. The narrow gauge 50kg / m rail No. 6 single turnout according to claim 2, characterized in that: The guard rail is 12 mm higher than the base rail.

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