Sliding bed bedplate structure for turnout zone and buckling and pressing system of sliding bed bedplate structure

Abstract

The utility model discloses a sliding bed platen structure for a turnout zone and a buckling and pressing system thereof, the sliding bed platen structure comprises a sliding table body of a U-shaped groove plate structure, one end of the sliding table body is a buckling and pressing end, the other end of the sliding table body is a mounting end, and the groove bottom of the sliding table body is provided with a bearing reaction acting point close to the buckling and pressing end. One side, corresponding to the mounting end, of the sliding table body extends to form a supporting plate, a limiting pillow is fixed to the supporting plate, the width of an inner side groove of the sliding table body is gradually increased towards the limiting pillow, and the width of the limiting pillow is smaller than that of a notch, corresponding to the mounting end, of the sliding table body; a limiting block is arranged on the bottom plate, the limiting pillow abuts against the limiting block for limiting, and the limiting block provides an acting point for installation of the buckling and pressing system at the same time. The sliding table body is fixed on the bottom plate; the buckling and pressing system comprises a sliding bed platen structure, an elastic clamp, a switch rail, a stock rail and a stock rail fastener, the elastic clamp penetrates into one side of a groove cavity of the sliding table body during use, bottom plate bolts do not need to be disassembled, disassembly, assembly and use are convenient, and meanwhile the structural layout is more compact.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transit, and particularly relates to a slide bed plate structure for a turnout area and its fastening system. Background Technique

[0002] A turnout is a line connection device that enables locomotives and rolling stocks to switch from one track to another. There are many structural components in the turnout area, and the wheel-rail relationship is complex. The slide bed plate is an important component in the railway turnout structure. The slide bed plate provides a platform for the conversion of the switch rail, and at the same time bears the wheel-rail load above the switch rail and transfers it downward. In addition, the slide bed plate can cooperate with fastening systems such as elastic clips and spring plates to achieve elastic fastening of the stock rail within a limited space.

[0003] The slide bed plate structure in the railway turnout area usually consists of a slide bed and a bottom plate, which are either split or integrally formed by welding / casting. A cavity structure is arranged inside the slide bed plate, and an elastic clip or a spring plate is inserted to achieve the fastening of the stock rail. The other side of the stock rail is fastened by ordinary fasteners to play a role in fixing the stock rail. The switch rail is placed above the slide bed plate, and the slide bed plate has the functions of bearing the switch rail and allowing the switch rail to slide. At present, the slide bed plate structure has good service performance and has been widely used in the turnout systems of passenger and freight co-line, heavy-haul, and high-speed railways in China.

[0004] The existing elastic clips or spring plates are of relatively unified types. For example, in Chinese Patent CN202202213U, the elastic clip for a heavy-haul track turnout disclosed has a U-shaped structure; in Chinese Patent CN 219670958U, it is proposed to change the U-shaped elastic clip to two strip-shaped elastic clips for convenient maintenance; in Chinese Patent CN 216237911U, a one-piece forming scheme for the table plate and the bottom plate is proposed to improve the structural integrity. Chinese Patent CN204311301U proposes a slide bed plate structure with a pin spring plate. The table plate and the bottom plate are integrally formed, and the spring plate is inserted from the tail end of the slide bed, and the fastening force is applied through a pin.

[0005] In the above-mentioned schemes, the elastic clip or the spring plate is placed inside the slide bed, and the disassembly and assembly methods are to insert or remove the elastic clip or the spring plate horizontally and longitudinally along the slide bed plate, which will interfere with the bolts on the bottom plate.

[0006] Chinese Patent CN 217839530 U proposes a method of using a spring bar to fasten the stock rail. By setting a groove on the side of the slide bed, the spring bar is placed from the side of the slide bed plate, but this structure does not have a limiting device and a device for applying the fastening force, so the fastening of the stock rail cannot be achieved.

[0007] Therefore, the main deficiencies of the existing technologies are as follows:

[0008] The existing slide bed plate structure and fastening system are difficult to disassemble and require sufficient installation space. The main reason is that the slide bed plate and the bottom plate are of a welded / cast integral structure. After the basic rail is installed, the elastic clip is horizontally inserted into the cavity in the plate along the length direction of the slide bed from the tail end of the slide bed, and then the tail end of the elastic clip is pried up with a special tool to provide fastening force for the basic rail. To avoid interference with the bottom plate bolts, the elastic clip needs to be placed in the cavity of the slide bed before installing the bottom plate bolts, and then the bottom plate bolts are installed; when disassembling, the bottom plate bolts are removed first, and then the elastic clip is withdrawn horizontally. Therefore, a certain space needs to be reserved outside the slide bed to ensure the smooth installation of the elastic clip.

[0009] However, for the double slip switch with more compact structural components, the existing slide bed plate and its fastening system are difficult to apply. The main reasons are as follows: at positions such as the obtuse frog and the straight and curved switch rails, the slide bed plate is adjacent to other tie plates or slide bed plates, resulting in the inability to disassemble and assemble the elastic clip. Therefore, in these compact areas, the basic rail cannot achieve elastic fastening on both sides, and there is no fastening component on one side of the slide bed plate.

[0010] Therefore, in view of the technical problems that the disassembly and assembly of the existing slide bed plate structure (equipped with elastic shims or elastic clips) are difficult, installation space needs to be reserved, and thus it cannot be applied to the compact areas of the switch, it is an urgent problem for those skilled in the art to propose a new slide bed plate structure and its fastening system to achieve the elastic fastening of the basic rail of the switch and be able to be applied to space-limited areas such as double slip switches. Summary of the Utility Model

[0011] In view of this, the present utility model provides a slide bed plate structure and its fastening system for the switch area, which can complete the disassembly and assembly of the elastic clip without removing the bottom plate bolts, is convenient for maintenance, and is also applicable to the more compact double slip switch. In addition, the existing elastic clip structure is optimized, and the commonly used U-shaped elastic clip is optimized into a split elastic clip, thereby reducing the stress level of the elastic clip and improving its durability.

[0012] To achieve the above object, the present utility model adopts the following technical solutions: A slide bed plate structure for the switch area, which includes:

[0013] A slide table body, the slide table body is a U-shaped groove plate structure, one end of the slide table body is a fastening end, the other end is an installation end, a reaction force acting point is provided at the bottom of the groove of the slide table body and close to the fastening end, a support plate extends from one side of the slide table body corresponding to the installation end, a limit sleeper is fixed on the support plate, the inner groove width of the slide table body is gradually increased towards the direction of the limit sleeper, and the width dimension of the limit sleeper is smaller than the groove opening width dimension of the slide table body corresponding to the installation end;

[0014] The base plate is provided with a limiting block for limiting the installation position of the sliding table body. The limiting pillow abuts against and limits the limiting block, and the sliding table body is fixed on the base plate.

[0015] The beneficial effect of the present utility model is that the groove in the sliding table body is not a groove with equal width, but a groove with variable width. There is enough space on the side close to the limiting pillow to realize the disassembly and assembly of the elastic clip. Moreover, the width dimension of the limiting pillow is smaller than the width dimension of the notch of the corresponding installation end of the sliding table body, which provides a certain space for the disassembly and assembly of one side of the elastic clip, avoiding the position of the base plate bolts, without the need to disassemble the base plate bolts, being convenient to use and having high efficiency.

[0016] Preferably, one side groove wall of the sliding table body is arranged with equal wall thickness in a straight direction, and the thickness of the other side groove wall gradually changes in the direction from the buckling end to the installation end. The limiting pillow is correspondingly arranged between the two side groove walls of the sliding table body.

[0017] The technical effect generated therefrom is that due to the change in the thickness of the groove wall on the side opposite to the limiting pillow of the sliding table body, the dimensional change of the internal groove width is realized, and thus it is convenient to disassemble the elastic clip from the oblique side direction.

[0018] Preferably, the limiting pillow is provided with a clamping groove for limiting the elastic clip.

[0019] The technical effect generated therefrom is that the clamping groove on the limiting pillow better limits the installation position of the elastic clip and prevents it from shaking left and right.

[0020] Preferably, the reaction force acting point is a convex block, and a plurality of reaction force acting points are arranged at intervals. A notch for avoiding the elastic clip is provided on the groove bottom of the sliding table body close to the buckling end.

[0021] The technical effect generated therefrom is that under normal conditions, the elastic clip only contacts one reaction force acting point. Only when the rail overturns and the elastic clip undergoes large deformation, the other reaction force acting point also contacts the elastic clip, thereby applying a greater clamping force to the stock rail. When the elastic clip is in use, the end area is located within the notch, which can form a left and right limiting effect and avoid its left and right shaking.

[0022] Preferably, there is a misalignment distance for installing the elastic clip between the other side groove wall of the sliding table body corresponding to the installation end and the end of the limiting pillow close to it.

[0023] The technical effect generated therefrom is that this purpose is to facilitate the disassembly and assembly of the elastic clip from the oblique side direction without removing the base plate bolts, so that the structural layout can be optimized, and thus it is applicable to a more compact double slip switch.

[0024] Preferably, an elastic clip limiting structure is fixed in the middle of the base plate.

[0025] The resulting technical effect is that the elastic clip limiting structure fixed in the middle of the bottom plate can cooperate with the limiting protrusion structure on the elastic clip. The elastic clip limiting structure prevents the elastic clip from being over-installed towards the stock rail direction and ensures its installation position.

[0026] The utility model also discloses a rail fastener system for a turnout area, which includes a slide bed plate structure, an elastic clip, a switch rail, a stock rail and stock rail fasteners. The elastic clip is arranged in the groove cavity of the slide table body. One end of the elastic clip presses the upper surface of the bottom of one side of the stock rail, the other end of the elastic clip is clamped on the limiting sleeper, the middle part of the elastic clip contacts the reaction force acting point, the switch rail is located on the slide table body, the stock rail is located on the bottom plate, and the stock rail fasteners are connected to the bottom plate and press the upper surface of the bottom of the other side of the stock rail.

[0027] The beneficial effect of the utility model is that when replacing the elastic clip, this fastener system is faster and simpler, without the need to disassemble the bottom plate bolts. The structure layout is compact and it can also be applied to a more compact double slip switch. The elastic clip is arranged in the groove of the slide table body, one end presses the upper surface of the bottom of one side of the stock rail, and the other end can be pried onto the limiting sleeper with a tool.

[0028] Preferably, one end of the elastic clip is a pressing working end, the other end of the elastic clip is a prying end. A limiting protrusion is arranged on the bottom wall of the elastic clip near the pressing working end, and the limiting protrusion abuts and limits with the elastic clip limiting structure on the bottom plate. A limiting arch is arranged near the prying end of the elastic clip, and the limiting arch is adapted to be located on the limiting sleeper.

[0029] The resulting technical effect is that the use of the limiting protrusion enables the elastic clip to be quickly installed in place. The limiting arch is used in cooperation with the limiting sleeper, and it is not easy to move after the elastic clip is installed in place.

[0030] Preferably, there are two sets of slide bed plates and two elastic clips in a fastener system, which are symmetrically arranged with the position of the bottom plate bolt as the center line, and each has an independent slide bed and elastic clip, but shares a bottom plate structure.

[0031] The resulting technical effect is that on the premise of maintaining the same fastening force as the existing fastener system, the fastening force of the single elastic clip structure proposed by the utility model can be reduced to half of the original structure, and its structural stress is significantly reduced, which can ensure the long-term maintenance of the elastic clip fastening performance and avoid fatigue fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the state of a rail fastener system for a turnout area of the utility model Figure 1 ;

[0033] Figure 2 is the state of a rail fastener system for a turnout area of the utility modelFigure 2 ;

[0034] Figure 3 This is an exploded view of a rail fastener system for a turnout area of the present utility model;

[0035] Figure 4 This is a schematic diagram of the sliding table body of a sliding bed plate structure for a turnout area of the present utility model Figure 1 ;

[0036] Figure 5 This is a schematic diagram of the sliding table body of a sliding bed plate structure for a turnout area of the present utility model Figure 2 ;

[0037] Figure 6 This is a bottom plate structure diagram of a sliding bed plate structure for a turnout area of the present utility model;

[0038] Figure 7 This is a schematic diagram of an elastic clip of a sliding bed plate structure for a turnout area of the present utility model Figure 1 ;

[0039] Figure 8 This is a schematic diagram of an elastic clip of a sliding bed plate structure for a turnout area of the present utility model Figure 2 。

[0040] 1 Sliding table body, 11 Fastening end, 12 Installation end, 13 Reaction force application point, 14 Support plate, 15 Limit pillow, 16 Notch, 2 Bottom plate, 3 Limit block, 4 Elastic clip, 41 Fastening working end, 42 Prying end, 43 Limit protrusion, 44 Limit arch, 5 Elastic clip limit structure, 6 Basic rail fastener, 7 Bottom plate bolt, 8 Under-rail rubber pad, 9 Switch rail, 10 Basic rail. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0042] Refer to the attached drawings of the present utility model Figures 1 to 8 , according to an embodiment of the present utility model, a sliding bed plate structure for a turnout area includes:

[0043] Sliding table body 1, the sliding table body 1 is a long strip-shaped U-groove plate structure. One end of the sliding table body 1 is a clamping end 11, and the other end is a mounting end 12. There is a reaction force acting point 13 at the bottom of the groove of the sliding table body 1 and near the clamping end 11. On one side of the sliding table body 1 corresponding to the mounting end 12, a support plate 14 extends. A limit pillow 15 is fixed on the support plate 14. The inner groove width of the sliding table body 1 is gradually increased in the direction of the limit pillow. The inner groove cavity of the sliding table body is similar to a trapezoidal groove. The width dimension of the limit pillow 15 is smaller than the groove opening width dimension of the sliding table body corresponding to the mounting end. This is to make room for the installation angle of the elastic clip and facilitate the elastic clip to be inserted and installed from one side of the groove cavity (corresponding to Figure 5 the area between 12 and 15 in the middle);

[0044] Base plate 2, there is a limit block 3 on the base plate 2 for limiting the installation position of the sliding table body 1. Specifically, at one end edge position, the limit pillow 15 abuts against the limit block 3 for limiting, and the sliding table body 1 is fixed on the base plate 2.

[0045] Specifically, the thickness dimension of one side groove wall of the sliding table body 1 remains unchanged and is set straight. The thickness dimension of the other side groove wall of the sliding table body 1 is gradually decreased in the direction from the clamping end 11 to the mounting end 12, which is convenient for forming a trapezoidal groove cavity. The large-diameter end of the trapezoidal groove cavity corresponds to the mounting end 12 of the sliding table body. The limit pillow 15 is correspondingly arranged between the two side plates of the sliding table body 1. This is to provide a positioning and supporting basis for the elastic clip.

[0046] In order to better ensure the position of the elastic clip on the limit pillow, there is a card slot for limiting the elastic clip 4 on the limit pillow 15 to avoid left-right shaking.

[0047] In some other specific embodiments, the reaction force acting point 13 is a convex block, and multiple reaction force acting points 13 are arranged at intervals. In this embodiment, two are shown. There is a notch 16 for avoiding the elastic clip on the bottom of the groove of the sliding table body 1 near the clamping end 11. When the elastic clip is used, the side plates of the sliding table body on both sides of the notch can also better limit the clamping position of the elastic clip.

[0048] In some other embodiments, there is a misalignment distance for installing the elastic clip between the other side groove wall of the sliding table body 1 corresponding to the mounting end 12 and the end of the limit pillow on its adjacent side, which is convenient for one side of the elastic clip to be inserted, and the elastic clip can be replaced without removing the base plate bolts.

[0049] In some other specific embodiments, an elastic clip limit structure 5 is fixed in the middle of the base plate 2 to prevent the elastic clip from being over-installed.

[0050] The present utility model also discloses a rail fastening system for a turnout area, which includes the above-mentioned slide base plate structure, elastic clip 4, switch rail 9, stock rail 10 and stock rail fastener 6. The elastic clip 4 is inserted into the cavity of the slide body 1. One end of the elastic clip 4 presses the upper surface of the bottom of one side of the stock rail, and the other end of the elastic clip 4 is clamped on the limit sleeper 15. The middle of the elastic clip 4 contacts the reaction force action point 13. The switch rail 9 is located on the slide body 1, the stock rail 10 is located on the bottom plate 2, and the stock rail fastener 6 is connected to the bottom plate 2 and presses the upper surface of the bottom of the other side of the stock rail.

[0051] The example shown by this fastening system is that two sets of slide base plate structures are used in cooperation with two sets of elastic clips; and they are symmetrically arranged. The slide body and the bottom plate are connected by welding or casting, and a distance of more than 20 mm is reserved between the two slide bodies to reserve a welding space. The slide body and the stock rail do not directly contact.

[0052] Specifically, one end of the elastic clip 4 is a pressing working end 41, the other end of the elastic clip 4 is a prying end 42. A limit protrusion 43 is provided on the bottom wall of the elastic clip 4 near the pressing working end, and the limit protrusion 43 abuts against and is limited by the elastic clip limiting structure 5 on the bottom plate. A limit arch 44 is provided on the elastic clip 4 near the prying end, and the limit arch 44 is adapted to be located on the limit sleeper 15.

[0053] During installation, the pressing working end of the elastic clip is placed on the upper surface of the bottom of the stock rail, the middle contacts the reaction force action point of the cavity of the slide body, and the prying end is pried up to the limit sleeper by a crowbar, so as to apply a fastening force to the stock rail.

[0054] The two reaction force action points in the groove of the slide body serve as the reaction force points of the elastic clip. Under normal installation and working conditions, only one reaction force action point contacts. Only when the rail overturns and the elastic clip undergoes large deformation, the other reaction force action point also contacts the elastic clip, so as to apply a greater fastening force to the stock rail. The elastic clip is a long strip-shaped non-uniform cross-section structure, and the structural design adopts an equal stress design, that is, after installation, the stresses of different cross-sections of the whole structure are made to have a comparable level as much as possible. The thickness of its middle part is the largest, corresponding to the reaction force point, to reduce the maximum stress of the elastic clip.

[0055] The limit protrusion on the lower surface of the elastic clip cooperates with the elastic clip limiting structure on the bottom plate to realize the limiting function of the elastic clip and prevent the elastic clip from being over-installed towards the stock rail.

[0056] There is a certain dislocation distance between the prying end of the elastic clip and the limit arch. This area is the working area for installing the elastic clip. After prying up this area, the limit arch on the elastic clip is matched with the limit sleeper in place.

[0057] An elastic pad 8 is provided between the stock rail and the base plate. The other side of the stock rail is fastened by a common fastening system, and both sides of the base plate are fixed to the concrete sleeper or ballastless track bed by two bolts.

[0058] To improve the installation efficiency of the existing elastic clip and reduce the space required for operation, the elastic clip is designed to avoid the base plate bolts and is designed as two long strip-shaped structures. After installation, the elastic clip is on both sides of the base plate bolts. When disassembling, since the inner cavity of the slide body is trapezoidal, the elastic clip can be installed and removed from the inclined side, thus no longer interfering with the bolts. In addition, after optimizing the original integral elastic clip into two elastic clips, on the premise that the total fastening force remains unchanged, the fastening force of a single elastic clip is reduced to half of the original fastening force, the working stress of the elastic clip structure is significantly reduced, fatigue fracture is avoided, and plastic deformation is reduced during long-term operation, which is beneficial to the long-term maintenance of the fastening force.

[0059] During the structural processing and assembly, 2 limit blocks and 2 elastic clip limit structures are processed or welded on the base plate; then the slide body is welded to the base plate; the base plate is fixed to the concrete sleeper or track bed by base plate bolts; the elastic clip is inserted into the cavity at the large end of the slide body, so that the prying end of the elastic clip is aligned with the limit block on the base plate; a crowbar is used to pry up the elastic clip limit arch to the limit sleeper at the tail end of the slide body. When disassembling, use a crowbar to pry the elastic clip limit arch off the limit sleeper and take out the elastic clip from the oblique rear. Therefore, the utility model solves the problem that the existing elastic clip interferes with the base plate bolts after being withdrawn horizontally from the tail end, and no longer interferes with the structure of the opposite slide bed plate. The strength and anti-fatigue performance of the elastic clip structure are enhanced, and the fastening performance of the elastic clip is effectively improved.

[0060] For the device and usage method disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description in the method part.

[0061] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A slide bed plate structure for a turnout area, characterized in that: include: A slide body (1), wherein the slide body (1) is a U-shaped groove plate structure, one end of the slide body (1) is a buckling end (11), and the other end is a mounting end (12), a support reaction force action point (13) is provided at the bottom of the groove of the slide body (1) and close to the buckling end (11), a support plate (14) is extended on one side of the slide body (1) corresponding to the mounting end (12), a limit pillow (15) is fixed on the support plate (14), the inner groove width of the slide body (1) is gradually increased toward the direction of the limit pillow, and the width dimension of the limit pillow (15) is smaller than the slot width dimension of the slide body corresponding to the mounting end; A bottom plate (2) is provided with a limit block (3) for limiting the installation position of the slide body (1), the limit pillow (15) abuts against the limit block (3) for limiting the position, and the slide body (1) is fixed on the bottom plate (2).

2. A slide bed plate structure for a turnout area according to claim 1, characterized in that: The groove wall on one side of the slide body (1) is arranged vertically with a constant wall thickness, and the groove wall on the other side is arranged with a thickness gradually changing from the buckling end (11) to the mounting end (12), and the limit pillow (15) is arranged between the groove walls on both sides of the slide body (1).

3. A slide bed plate structure for a turnout area according to claim 2, characterized in that: The limiting pillow (15) is provided with a slot for limiting the elastic clip (4).

4. The slide bed plate structure for a turnout area according to claim 2, characterized in that: The supporting reaction force action point (13) is a convex block, and a plurality of the supporting reaction force action points (13) are arranged at intervals. A notch (16) for avoiding the elastic clip is provided on the bottom of the groove of the slide body (1) close to the buckling end (11).

5. The slide bed plate structure for a turnout area according to claim 2, characterized in that: There is an offset distance for installing the elastic clip between the groove wall on the other side of the slide body (1) corresponding to the installation end (12) and the end of the limiting pillow on the side close to it.

6. A slide bed plate structure for a turnout area according to any one of claims 2 to 5, characterized in that: An elastic clip limiting structure (5) is fixed to the middle of the bottom plate (2).

7. A rail clamping system for a turnout area, characterized in that: The invention comprises the slide bed plate structure as claimed in claim 6, an elastic clip (4), a point rail (9), a basic rail (10) and a basic rail fastener (6), wherein the elastic clip (4) is inserted into the groove cavity of the slide body (1), one end of the elastic clip (4) presses against the upper surface of the bottom of one side of the basic rail, the other end of the elastic clip (4) is clamped on the limit pillow (15), the middle part of the elastic clip (4) contacts the support reaction force action point (13), the point rail (9) is located on the slide body (1), the basic rail (10) is located on the base plate (2), and the basic rail fastener (6) is connected to the base plate (2) and presses against the upper surface of the bottom of the other side of the basic rail.

8. A rail clamping system for a turnout area according to claim 7, characterized in that: One end of the elastic clip (4) is a buckling working end (41), and the other end of the elastic clip (4) is a prying end (42). A limiting protrusion (43) is provided on the bottom wall of the elastic clip (4) near the buckling working end, and the limiting protrusion (43) abuts against the elastic clip limiting structure (5) on the bottom plate for limiting. A limiting arch (44) is provided near the prying end of the elastic clip (4), and the limiting arch (44) is adapted to be located on the limiting pillow (15).

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