Movable joint for railway double-type cross-section turnout

Abstract

The invention provides a movable joint for a railway compound cross-section turnout, and belongs to the technical field of railway turnouts, the movable joint comprises a base, spacer iron, a bent clamping plate and a spacer piece, the spacer piece is arranged between the spacer iron and the bent clamping plate, and two sides of the spacer piece respectively abut against the spacer iron and the bent clamping plate, so that a conversion space is formed between the spacer iron and the bent clamping plate; when a line is maintained and repaired, the bolt is fastened, the switching space is not reduced due to the fastening bolt because the two sides of the spacer abut against the spacer iron and the bent clamping plate, and therefore it is guaranteed that the switching space of the switch rail is reduced, and the switch rail is wrenched and blocked.

Description

Technical Field

[0001] The present invention relates to the technical field of railway turnouts, in particular to a flexible joint for a railway compound crossing turnout. Background Art

[0002] A compound crossing turnout is equivalent to two sets of single-opening turnouts laid in opposite directions. It has the advantages of short turnout length, saving floor space, improving vehicle shunting capacity, and opening up more routes, so that trains can not only pass through intersecting lines, but also transfer from one line to another. The two main driving directions are straight, which can improve train operating conditions.

[0003] A joint primarily consists of spacers, rail supports, bent cleats, and connecting bolts. Spacers maintain the spacing between the guide rail, the switch rail, and the connecting rail. A common joint structure involves installing a custom fishplate inside the switch rail, with sleeves or studs used to maintain the required clearance between the spacer and the fishplate.

[0004] However, with the fishtail plate method, the heel end of the point rail is not fixed, there are many parts, and the structure is complex and loose, which causes the bent splint and the spacer iron to be easily worn during use. Tightening the connecting bolts after wear will cause the point rail conversion space to be reduced, affecting the movement of the point rail and causing jamming. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the jamming defect caused by the reduction of rail switching space in the prior art, thereby providing a flexible joint for a railway duplex crossing turnout.

[0006] In order to solve the above problems, the present invention provides a flexible joint for a railway double-crossing turnout, comprising:

[0007] base;

[0008] A spacer iron, the spacer iron being arranged on the base; the spacer iron being arranged on a first side of an adjacent guide rail and a point rail and being adapted to be connected to the first side of the guide rail and the point rail;

[0009] a bent clamping plate, the bent clamping plate being disposed on the base; the bent clamping plate being disposed on the second side of the adjacent guide rail and the point rail and being adapted to be connected to the second side of the guide rail and the point rail; the bent clamping plate and the spacer iron being used to constrain the adjacent guide rail and the point rail between the bent clamping plate and the spacer iron via bolts;

[0010] A spacer is arranged between the spacer iron and the bending splint; two sides of the spacer are respectively in contact with the spacer iron and the bending splint to form a conversion space between the spacer iron and the bending splint; the point rail is suitable for moving in the conversion space.

[0011] Further, the spacer comprises a spacer sleeve, which is adapted to be sleeved on the outer periphery of the bolt.

[0012] Further, the spacer sleeve is in the structure of a circular ring column.

[0013] Further, the spacer sleeve is in the structure of a circular ring column.

[0014] The support is adapted to be connected with the spacer and / or the bent clamping plate on one side and with the base on the other side.

[0015] Further, the support comprises:

[0016] The inner rail support comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are connected vertically; the side surface of the first connecting plate is adapted to be connected with the bent clamping plate; and the side surface of the second connecting plate is adapted to be connected with the base.

[0017] Further, the support comprises:

[0018] The support comprises a connecting plate and an avoiding plate; the end of the connecting plate is adapted to be connected with the avoiding plate; the connecting plate is adapted to be fixedly connected with the bent clamping plate; and the avoiding plate is adapted to be connected with the base, and an avoiding space is formed between the avoiding plate and the base, which is adapted to accommodate the bottom end of the point rail.

[0019] Further, the avoiding plate comprises a first inner wall and a second inner wall, which are arranged vertically to each other; the gap between the first inner wall and the base is 3-5 mm; and the distance between the second inner wall and the bottom end of the point rail is 10-15 mm.

[0020] Further, the connecting plate and the avoiding plate are integrally formed.

[0021] Further, the spacer clamping plate is provided with a groove, which is adapted to accommodate the spacer.

[0022] Further, the bolt comprises a slotted nut and an open pin structure.

[0023] The technical scheme of the present application has the following advantages:

[0024] The railway compound crossover turnout movable joint provided by the application comprises a base, a spacing iron, a bent clamping plate and a spacing piece, the spacing piece is arranged between the spacing iron and the bent clamping plate, the two sides of the spacing piece are respectively abutted with the spacing iron and the bent clamping plate, so that a conversion space is formed between the spacing iron and the bent clamping plate, when the line is maintained and repaired, the fastening bolt, because the two sides of the spacing piece are abutted with the spacing iron and the bent clamping plate, the conversion space will not be reduced due to the fastening bolt, so as to ensure that the point rail is not affected by the reduction of the conversion space and the point rail is not blocked due to the pulling. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 An embodiment of the railway compound crossover turnout movable joint provided by the application is shown in the figure.

[0027] Figure 2 Another embodiment of the railway compound crossover turnout movable joint provided by the application is shown in the figure.

[0028] Figure 3 The spacing piece of the railway compound crossover turnout movable joint provided by the application is shown in the figure.

[0029] Figure 4 The spacing sleeve of the railway compound crossover turnout movable joint provided by the application is shown in the figure.

[0030] Figure 5 The support of the railway compound crossover turnout movable joint provided by the application is shown in the figure.

[0031] Explanation of reference signs:

[0032] 1, base; 2, spacing iron; 21, groove; 3, bent clamping plate; 4, spacing piece; 41, spacing sleeve;

[0033] 5, support; 510, inner rail support; 520, outer rail support; 530, support; 531, connecting plate; 532, avoiding plate; 5321, first inner wall; 5322, second inner wall;

[0034] 6, bolt; 7, point rail; 8, guide rail; 9, basic rail. DETAILED DESCRIPTION

[0035] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0036] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships 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, and therefore cannot be understood as a limitation of the present application.

[0037] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0039] Noun explanation:

[0040] Compound crossover turnout: The compound crossover turnout is equivalent to two groups of single open turnouts laid in opposite directions, has the advantages of short turnout length, saving land area, improving vehicle shunting capacity, opening more routes, enabling trains not only to pass through the crossover line, but also to transfer from one line to another line, and the two main driving directions are straight lines, which can improve the train operation conditions. At present, the crossover turnout is widely used at home and abroad. The compound crossover turnout is composed of a diamond intersection, a switch and a connecting curve, etc. Due to space limitations, the point rail or the center rail of the compound crossover turnout cannot adopt an elastic bendable structure, so the joint structure is a structure that is difficult to be replaced in the compound crossover turnout.

[0041] Switch rail movable joint: the switch rail movable joint is to connect the switch rail with the adjacent guide rail, and the nose rail movable joint is to connect the nose rail with its adjacent straight guide rail. The movable joint is mainly composed of spacer iron, rail support, bending clamp plate and connecting bolt and the like. The spacer iron keeps the spacing size of the guide rail and the switch rail and the connecting part rail. The inside of the switch rail is provided with the bending clamp plate, and the sleeve or stud bolt is used to keep the space required by the switch rail conversion between the spacer iron and the clamp plate. The structure of the switch rail heel movable joint is a structure often used at the heel of the turnout, especially for the complex crossover turnout, which is a heel structure that is difficult to replace. The switch rail of the movable joint structure can be of any length, the switch rail is flexible to bend, and the conversion resistance is small.

[0042] Movable joint structure: the movable joint structure is to keep the spacing size of the guide rail and the switch rail and the connecting part rail by the spacer iron, and the specially designed fishplate is installed on the inside of the switch rail, and the sleeve or stud bolt is used to keep the space required by the switch rail conversion between the spacer iron and the fishplate.

[0043] As described in the background, the switch rail 7 heel is not fixed by the way of the fishplate, the parts are many, the structure is complex and loose, and the bending clamp plate 3 and the spacer iron 2 are easily abraded during use. After the abrading, the fastening of the connecting bolt 6 will cause the reduction of the switch rail 7 conversion space, affect the bending of the switch rail 7 and cause the blockage.

[0044] To solve the above problems, the present application provides a movable joint for a railway complex crossover turnout, which comprises a base 1, a spacer iron 2, a bending clamp plate 3 and a spacer 4. The spacer 4 is arranged between the spacer iron 2 and the bending clamp plate 3, and the two sides of the spacer 4 are respectively in abutment with the spacer iron 2 and the bending clamp plate 3, so as to form a conversion space between the spacer iron 2 and the bending clamp plate 3. When the line is maintained and repaired, the fastening bolt 6 is tightened. Since the two sides of the spacer 4 are in abutment with the spacer iron 2 and the bending clamp plate 3, the conversion space will not be reduced due to the tightening of the fastening bolt 6, so as to ensure that the switch rail 7 is not affected by the reduction of the conversion space, and the bending of the switch rail 7 does not cause the blockage.

[0045] It should be pointed out that the movable joint for a railway complex crossover turnout provided in the embodiment is applied to the complex crossover turnout.

[0046] As Figures 1 to 5As shown, the present embodiment provides a railway compound crossover turnout movable joint, comprising a base 1, a spacer iron 2, a bent clamp plate 3, a spacer 4, wherein the spacer iron 2 is arranged on the base 1, the spacer iron 2 is arranged on the first side of the adjacent rail 8 and the point rail 7, and is adapted to be connected with the first side of the rail 8 and the point rail 7; the bent clamp plate 3 is arranged on the base 1; the bent clamp plate 3 is arranged on the second side of the adjacent rail 8 and the point rail 7, and is adapted to be connected with the second side of the rail 8 and the point rail 7; the bent clamp plate 3 and the spacer iron 2 limit the adjacent rail 8 and the point rail 7 between the bent clamp plate 3 and the spacer iron 2 through the bolt 6; the spacer 4 is arranged between the spacer iron 2 and the bent clamp plate 3; the two sides of the spacer 4 respectively abut against the spacer iron 2 and the bent clamp plate 3, so that a conversion space is formed between the spacer iron 2 and the bent clamp plate 3; the conversion space is adapted to avoid the point rail 7.

[0047] When the line maintenance is maintained, the bolt 6 is fastened, and because the two sides of the spacer 4 abut against the spacer iron 2 and the bent clamp plate 3, the conversion space will not be reduced due to the fastening of the bolt 6, thereby ensuring that the point rail 7 is not affected by the conversion space reduction and the point rail 7 is not blocked due to the conversion space reduction.

[0048] The size of the spacer iron 2 should meet the width requirement of the wheel flange groove, that is, it should be ensured that when the wheel flange of one side of the wheel set is in close contact with the straight point rail 7, the wheel flange of the other side can smoothly pass through without impacting the heel end of the side line point rail 7. Under the condition of meeting the smooth passing of the wheel set, the size value of the spacer iron 2 should not be too wide, so as to avoid unnecessary increase of the length of the point rail 7.

[0049] Because the movable joint position of the compound crossover turnout, neither the rail 8 nor the point rail 7 is subjected to rail head milling, the spacer iron 2 adopts a double-ear cross-section. The ear width of the double-ear cross-section spacer iron 2 is determined by the corresponding rail head width, rail waist thickness and gap size. Because the ears are tightly pressed on the rails, a certain gap can be left between the side surface of the ear and the rail waist to avoid overfitting of the spacer iron 2 and the rail, and to reduce the grinding or cutting workload caused by casting. According to practical experience, the gap size can be 1.0mm-1.5mm. The thickness of the middle part of the spacer iron 2 should meet the depth requirement of the wheel flange groove, and the diameter of the through hole in the spacer iron 2 and the thickness of the hole wall should also be considered.

[0050] The design method of the bent clamp plate 3 is to place the clamp plate at the heel of the point rail 7 (or the movable center rail) and the heel spacer iron 2 to cooperate with each other, so as to integrate the point rail 7, the rail 8 and the connecting part rail into one.

[0051] In order to reserve the conversion space between the point rail 7 (or the nose rail) and the spacing iron 2 and the bent clamp plate 3, when the point rail 7 (or the nose rail) is in the working state, the spacing iron 2 is in close contact with the point rail 7 (or the nose rail) and provides a lateral force for the point rail 7 (or the nose rail). The bent clamp plate 3 is bent at the heel end of the point rail 7 (or the nose rail), and the bent offset should meet the conversion of the point rail 7 (or the nose rail). The starting end of the bent clamp plate protrudes outside the working edge of the point rail 7 to prevent impact from the wheel flange. The cross-sectional profile of the clamp plate can be calculated by imitating the calculation method of the cross-sectional ear size of the spacing iron 2.

[0052] It should be noted that the bent clamp plate 3, the spacing iron 2, the guide rail 8 and the point rail 7 are all provided with through holes suitable for the bolt 6 to pass through. The bolt 6 passes through the bent clamp plate 3, the spacing iron 2 and the guide rail 8 in sequence, and the bolt 6 passes through the bent clamp plate 3, the spacing iron 2 and the point rail 7 in sequence. The point rail 7 and the guide rail 8 are connected and fixed through the spacing iron 2. In order to ensure the connection of the guide rail 8 and the point rail 7, the spacing iron 2 is provided with four or more through holes, and the plurality of through holes correspond to the guide rail 8 and the point rail 7 respectively.

[0053] Further, the spacing piece 4 includes a spacing sleeve 41 suitable for being sleeved on the outer periphery of the bolt 6.

[0054] It should be noted that the spacing sleeve 41 needs to be made of hard material, such as steel material. The spacing sleeve 41 has one that can also ensure that the conversion space will not be reduced due to the tightening of the bolt 6. However, if the tightening force of the bolt 6 is too large and exceeds the bearing range of the spacing sleeve 41, the spacing sleeve 41 may be damaged, further increasing the bearing range of the spacing sleeve 41, which can be reasonably increased according to actual needs.

[0055] Further, the spacing sleeve 41 is a circular column structure. Since the bolt 6 is cylindrical, the spacing sleeve 41 with the circular column structure is more convenient to cooperate with the bolt 6.

[0056] As an alternative embodiment, the spacing sleeve 41 can also be a square ring column structure.

[0057] Further, the railway compound crossover turnout articulated joint provided by the embodiment further includes a support 5, one side of the support 5 being suitable for being connected with the bent clamp plate 3, and the other side being suitable for being connected with the base 1.

[0058] By providing the support 5, the stability of the connection of the bent clamp plate 3 and / or the spacing iron 2 with the base 1 can be increased. The support 5 can be connected with the bent clamp plate 3 and / or the spacing iron 2 and the base 1 by welding or bolt 6 connection.

[0059] Specifically, there can be one support member 5. When there is one support member 5, the support member 5 can be set on the first side of the point rail 7 and the guide rail 8, that is, the support member 5 is used to connect the spacer iron 2 and the base 1; when there is one support member 5, the support member 5 can be set on the second side of the point rail 7 and the guide rail 8, that is, the support member 5 is used to connect the bending splint 3 and the base 1; there can be two support members 5. When there are two support members 5, the two support members 5 are respectively set on the first side and the second side of the point rail 7 and the guide rail 8, and the support member 5 is used to connect the bending splint 3 and the base 1, as well as for connecting the spacer iron 2 and the base 1.

[0060] In a possible embodiment, the support member 5 includes an inner rail support 510, one side of the inner rail support 510 is suitable for connecting to the spacer iron 2, and the other side is suitable for connecting to the base 1; the inner rail support 510 includes a first connecting plate and a second connecting plate; the first connecting plate and the second connecting plate are vertically connected; the side of the first connecting plate is suitable for connecting to the bending splint 3; the side of the second connecting plate is suitable for connecting to the base 1.

[0061] It should be noted that, in this embodiment, the inner rail support 510 is a common “L”-shaped plate. By adding the inner rail support 510 , the stability of the connection between the spacer iron 2 and the base 1 can be increased.

[0062] The rail support 510 within the flexible joint is used on the working side of the heel end of the switch rail 7 or active center rail. When fastened to the rail waist, it prevents rail creep. The rail support is connected to the rail waist and the bent clamp 3 via horizontal bolts 6 on the vertical wall. Together, they maintain the heel end gauge of the switch rail 7 or center rail and prevent it from creeping. It should be noted that the rail support typically utilizes a separate, adjustable structure. Specifically, the rail support is first connected to the pad by vertical bolts 6, which then connects the pad to the switch tie.

[0063] Specifically, the support member 5 also includes an outer rail support 520, which is used for the basic rail 9 and the base 1, thereby increasing the overall stability; the outer rail support 520 is used on the non-working side of the point rail 7 or the movable heart rail and the guide rail 8, which can prevent the rail from overturning, enhance the stability of the rail, and play a role in maintaining the track gauge.

[0064] It should be noted that the simulation calculation model of the articulated joint structure is established based on the structural scheme and the finite element method. The model includes the switch rail 7, the guide rail 8, the basic rail 9, the spacer iron 2, the clamping plate, the spacer sleeve 41 and other components. Friction contact is provided between each component. The grid size of the contact section related to the bolt 6 is encrypted. In order to improve the calculation speed, the grid size of other areas is larger. A vertical force of 230 kN is applied to the top surface of the switch rail 7 at the end rail. A horizontal force of 50 kN is applied at the same position. A torque of 200 Nm is used to fasten the connected high-strength bolt 6. In this embodiment, the total deformation is 1.21 mm. The maximum equivalent stress of the horizontal bolt 6 on the side of the switch rail 7 is 327.64 MPa. The maximum equivalent stress of the horizontal bolt 6 on the side of the basic rail 9 is 345.63 MPa. The maximum equivalent stress of the spacer sleeve 41 is 227.08 MPa.

[0065] In another possible embodiment, the support 5 comprises a support base 530, the support base 530 comprising a connecting plate 531 and an avoiding plate 532; the connecting plate 531 is adapted to be connected with the avoiding plate 532; the connecting plate 531 is adapted to be fixedly connected with the bent clamping plate 3; the avoiding plate 532 is adapted to be connected with the base 1, and an avoiding space is formed between the avoiding plate 532 and the base 1, which is adapted to accommodate the bottom end of the switch rail 7.

[0066] Specifically, the avoiding plate 532 has a "Z" shape in cross section, and provides a conversion space for the bottom of the switch rail 7. Through the avoiding plate 532, the distance between the support base 530 and the steel rail can be reduced, and the size of the spacer iron 2 and the length of the bolt 6 can be reduced. Under the condition of meeting the conversion space of the switch rail 7, reducing the size of the spacer iron 2 can not only reduce the length of the bolt 6, but also save materials and reduce the weight of the spacer iron 2.

[0067] Further, the avoiding plate 532 comprises a first inner wall 5321 and a second inner wall 5322, the first inner wall 5321 and the second inner wall 5322 are arranged perpendicular to each other, and the gap between the first inner wall 5321 and the base 1 is 3-5 mm; the distance between the second inner wall 5322 and the bottom end of the switch rail 7 is 10-15 mm.

[0068] Specifically, the connecting plate 531 and the avoiding plate 532 are integrally formed. As an alternative embodiment, the connecting plate 531 and the avoiding plate 532 can also be split type. By adopting the split type adjustment, the gap between the spacer iron 2 and the support base 530 can be adjusted separately to ensure the conversion space of the switch rail 7.

[0069] It should be noted that the simulation calculation model of the articulated joint structure is established based on the structural scheme and the finite element method, the model includes the switch rail 7, the guide rail 8, the basic rail 9, the spacing iron 2, the spacing sleeve 41, the clamping plate and other components, friction contact is provided between each component, the grid size of the contact section related to the bolt 6 is encrypted, in order to improve the calculation speed, the grid size of other areas is larger, 230kN vertical force is applied to the top surface of the switch rail 7, 50kN horizontal force is applied to the same position, the high-strength bolt 6 is fastened with a torque of 200Nm, the total deformation in the embodiment is 1.73mm, the maximum equivalent stress of the horizontal bolt 6 is 208.99MPa, and the maximum equivalent stress of the spacing sleeve 41 is 237.3MPa.

[0070] Further, the spacing clamping plate is provided with a groove 21 adapted to accommodate the spacing piece 4. By providing the groove 21, the position of the spacing sleeve 41 can be limited, better cooperation can be achieved, and the installation efficiency can be improved during installation by providing the groove 21.

[0071] It should be noted that in actual use, when the worn spacing sleeve 41 needs to be replaced, only a few bolts 6 need to be disassembled, and the spacing iron 2 can be moved to remove the spacing sleeve 41, and the installation and disassembly are very convenient.

[0072] Further, the bolt 6 includes a slotted nut and an open pin structure. This structure does not depend on friction, adhesives or elastic deformation of materials, so it is not affected by vibration, impact, temperature cycling or long-term stress relaxation.

[0073] Obviously, the above embodiments are only examples for the purpose of clear illustration, and are not limitations of the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, all the embodiments need not and cannot be exhausted. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A flexible joint for a railway double crossing turnout, characterized in that: include: Base (1); A spacer iron (2), the spacer iron (2) being arranged on the base (1); the spacer iron (2) being arranged on the first side of the adjacent guide rail (8) and the point rail (7), and being adapted to be connected to the first side of the guide rail (8) and the point rail (7); A bending splint (3), the bending splint (3) being arranged on the base (1); the bending splint (3) being arranged on the second side of the adjacent guide rail (8) and the point rail (7), and being adapted to be connected to the second side of the guide rail (8) and the point rail (7); the bending splint (3) and the spacer iron (2) are restrained between the adjacent guide rail (8) and the point rail (7) by bolts (6); A spacer (4), the spacer (4) being arranged between the spacer iron (2) and the bent splint (3); two sides of the spacer (4) respectively abut against the spacer iron (2) and the bent splint (3), so as to form a conversion space between the spacer iron (2) and the bent splint (3); the conversion space being suitable for avoiding the point rail (7).

2. The flexible joint for railway double crossing turnout according to claim 1, characterized in that: The spacer (4) comprises a spacer sleeve (41), and the spacer sleeve (41) is suitable for being sleeved on the outer periphery of the bolt (6).

3. The flexible joint for railway double crossing turnout according to claim 2, characterized in that: The spacer sleeve (41) is a circular column structure.

4. The flexible joint for railway multiple crossing turnout according to any one of claims 1 to 3, characterized in that: Also includes: A support member (5), one side of the support member (5) is suitable for connection with the spacer iron (2) and / or the bent clamp (3), and the other side is suitable for connection with the base (1).

5. The flexible joint for railway double crossing turnout according to claim 4, characterized in that: The support member (5) comprises: An inner rail support (510), wherein one side of the inner rail support (510) is suitable for connecting to the spacer iron (2), and the other side is suitable for connecting to the base (1); the inner rail support (510) comprises a first connecting plate (531) and a second connecting plate (531); the first connecting plate (531) and the second connecting plate (531) are vertically connected; the side surface of the first connecting plate (531) is suitable for connecting to the bending clamp (3); and the side surface of the second connecting plate (531) is suitable for connecting to the base (1).

6. The flexible joint for railway double crossing turnout according to claim 4, characterized in that: The support member (5) comprises: A support (530), the support (530) comprising a connecting plate (531) and a avoidance plate (532); an end portion of the connecting plate (531) being suitable for connection to the avoidance plate (532); the connecting plate (531) being suitable for fixed connection to the bending clamp (3); the avoidance plate (532) being suitable for connection to the base (1), a avoidance space being formed between the avoidance plate (532) and the base (1), the avoidance space being suitable for accommodating the bottom end of the point rail (7).

7. The flexible joint for railway multiple crossing turnout according to claim 6, characterized in that: The avoidance plate (532) comprises a first inner wall (5321) and a second inner wall (5322), wherein the first inner wall (5321) and the second inner wall (5322) are arranged perpendicular to each other, and the gap between the first inner wall (5321) and the base (1) is 3 mm to 5 mm; and the distance between the bottom end of the second inner wall (5322) and the bottom end of the point rail (7) is 10 mm to 15 mm.

8. The flexible joint for railway double crossing turnout according to claim 1, characterized in that: The connecting plate (531) and the avoidance plate (532) are integrally formed.

9. The flexible joint for railway double crossing turnout according to claim 1, characterized in that: A groove (21) is provided on the spacer iron (2), and the groove (21) is suitable for accommodating the spacer (4).

10. The flexible joint for railway double crossing turnout according to claim 1, characterized in that: The bolt (6) comprises a structure of a slotted nut and a cotter pin.

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