Rail brace slide plate assembly based on composite locking structure

Abstract

The invention relates to a rail transit technology, and aims to provide a rail brace slide plate assembly based on a composite locking structure. Comprising a bottom plate fixedly provided with a sliding bed table. The rail brace comprises a wedge-shaped supporting part and a frame-shaped mounting part, and the composite locking structure comprises an elastic strip, a pressing block, an iron seat and a mounting groove, wherein the iron seat and the mounting groove are arranged on the bottom plate; an acute included angle is formed between the mounting groove and the stock rail, the rail brace is arranged on the iron base in a sleeved mode through the frame-shaped opening, and the prismatic protrusion is embedded into the mounting groove. The pressing block is arranged on the iron base in a sleeved mode, the elastic strip is inserted into the iron base, and the pressing block is meshed with the frame-shaped installation part through a tooth-shaped structure. By means of the design, when the track gauge needs to be adjusted, only the elastic strip needs to be taken out, the track brace is moved to a proper position along the installation groove, and then the elastic strip is buckled; the whole process is simple to operate, and the problem of failure of a traditional rail brace is avoided; the rail brace slide plate assembly integrates three anti-loosening mechanisms of wedge-shaped friction, tooth-shaped meshing and slide groove limiting, the stability is good, and the track gauge is convenient to adjust.

Description

Technical Field

[0001] The invention relates to rail transportation technology, in particular to a rail support sliding bed plate assembly based on a composite locking structure. Background Art

[0002] The slide plate assembly is a key foundational component in the switch section of railway turnouts, especially single-opening turnouts. It primarily supports the point rail (or movable heart rail) and guides wheels smoothly through the turnout area. It typically consists of a base plate, a slide platform, rail supports, and a locking mechanism. The base plate is a rectangular plate structure mounted on the sleepers. The slide platform is integrally formed with the base plate or connected by welding, with the upper portion supporting the point rail. The rail supports and locking mechanism work together with spring clips and adjusting wedges to secure the stock rail. This allows the stock rail to withstand not only the vertical pressure of the wheels but also, together with the point rail, the lateral forces exerted by the wheels. The rail supports provide support to counteract the lateral forces exerted on the stock rail by vehicles passing through the turnout. Traditional installation methods use bolts and spring clips for securement (e.g., CN 216585938 U). However, this can loosen over time due to rail vibration. Traditional solutions for fixing rail supports usually rely on elastic washers or double nut structures. Not only are these structures complex, but their anti-loosening effects also significantly decrease with aging of the materials, requiring frequent inspection and maintenance.

[0003] There is also another problem that remains unresolved: traditional rail support technology can only compact the base rail and reduce or eliminate X-axis (i.e., lateral) displacement or side-to-side shaking of the base rail. However, after a train has been running for a period of time, the working edge of the track will wear out, and the track gauge needs to be adjusted. Otherwise, the increased track gauge will increase the wear of the wheel flange and track, reducing the service life of related components. Traditional rail support technology can only increase or decrease the track gauge by adding an adjustment wedge. Often, the adjustment wedge is not tight enough even when it is driven all the way in, or the installation gap is too high or too low to adjust during use. In addition, the reduction of the elastic force of the spring bar and the loosening of the locking bolt during use can also cause the adjustment wedge to fail. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a rail-supported sliding bed plate assembly based on a composite locking structure.

[0005] To solve the technical problem, the solution of the present invention is: A rail support and slide bed assembly based on a composite locking structure is provided, comprising a base plate, on the surface of which a rail support and a slide bed are fixedly mounted relative to each other, the two cooperating with each other to fix and mount the basic rail; the rail support comprises a wedge-shaped support portion and a frame-shaped mounting portion, the two being connected and mounted on the base plate through a composite locking structure; wherein, The composite locking structure includes a spring bar, a pressure block, and an iron seat and a mounting groove provided on the bottom plate; The wedge-shaped support portion of the rail support has an upwardly extending wedge-shaped portion for abutting against the side surface of the waist of the stock rail; a recessed portion is provided at the lower edge of the wedge-shaped support portion for pressing against the bottom surface of the stock rail; the frame-shaped mounting portion of the rail support has a frame-shaped opening in the middle and a ridge-shaped protrusion extending downward; and at least one tooth-shaped structure is provided on the upper surface of the frame-shaped mounting portion; There is an acute angle α between the mounting groove on the base plate and the basic rail, the rail support is fitted on the iron base with its frame-shaped opening, and the ridge-shaped protrusion is embedded in the mounting groove; the middle part of the pressure block has a frame-shaped opening and is fitted on the iron base, the elastic bar is inserted into the mounting hole of the iron base, and the pressure block and the rail support are firmly mounted on the base plate in sequence through elastic deformation; there is at least one tooth-shaped structure on the lower surface of the pressure block, which is engaged with the tooth-shaped structure on the surface of the frame-shaped mounting portion.

[0006] As a preferred solution of the present invention, the mounting groove on the bottom plate is arranged on the outside of the iron seat; accordingly, the ridge-shaped protrusion of the frame-shaped mounting portion is located on the outside of the frame-shaped opening.

[0007] As a preferred solution of the present invention, the pressing block has a shape that is adapted to the upper surface of the rail support, and its frame-shaped opening has a shape that is adapted to the cross-section of the iron seat; an arc groove that is adapted to the shape of the elastic bar is provided on the upper surface of the pressing block for installation limiting.

[0008] As a preferred solution of the present invention, the cross section of the iron seat is rectangular and is fixed to the base plate by welding; a transverse through hole or cavity is provided on the iron seat for inserting the mounting end of the elastic bar.

[0009] As a preferred solution of the present invention, two tooth-shaped structures are arranged in parallel on both side edges of the frame-shaped opening of the rail support, and two tooth-shaped structures are arranged in parallel on both side edges of the frame-shaped opening of the pressing block.

[0010] As a preferred embodiment of the present invention, the wedge-shaped portion of the rail support is in the shape of a quadrangular pyramid; the outer edge of the wedge-shaped support portion and the symmetry axis of the frame-shaped opening in the frame-shaped mounting portion have an acute angle α, and the angle range is 5 ° ~6°.

[0011] As a preferred embodiment of the present invention, the iron seat has a gate-shaped longitudinal cross-section.

[0012] As a preferred embodiment of the present invention, the rail support is an integrated structure including a wedge-shaped support portion and a frame-shaped mounting portion, which is manufactured by a casting or milling process; or, the wedge-shaped support portion and the frame-shaped mounting portion in the rail support are respectively manufactured by a casting or milling process, and the two are tightly fitted during installation and are compressed by the elastic bars and the pressure blocks.

[0013] As a preferred solution of the present invention, a pointed rail or a movable heart rail is installed on the upper part of the slide bed; the inner edge of the slide bed has a recessed portion, which together with the wedge-shaped support portion of the rail support realizes the stable installation of the basic rail.

[0014] As a preferred solution of the present invention, through holes are provided at both ends of the bottom plate, and the rail support sliding bed plate assembly is fixedly mounted on the sleeper by means of bolts.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention utilizes a mounting groove provided on the base plate, which is arranged at an angle to the direction of the base rail. When the base rail and the point rail are worn or other situations require adjustment of the track gauge, it is only necessary to remove the spring bar, move the rail support to a suitable position along the mounting groove, and then buckle the spring bar. The entire process is simple to operate and does not cause the failure problem of traditional rail supports.

[0016] 2. This invention utilizes the toothed meshing between the pressure block and the rail support to reduce rail support displacement during use. Because the rack is designed to run along the edge of the frame opening, it is actually angled with the base rail direction. Therefore, when the rail support is subjected to X-axis forces, the meshing relationship between the racks, combined with the nested installation method of the iron base, can provide a locking and reaction force.

[0017] 3. The present invention utilizes the pressing installation between the pressure block and the rail support, as well as the wedge-shaped structure design of the rail support, to increase the friction between the rail support and the rail waist. By using the preferred integrated rail support design, the stability of the rail support structure can be enhanced.

[0018] 4. The rail support fastener structure of the rail support sliding bed assembly of the present invention integrates a triple anti-loosening mechanism of wedge friction, tooth engagement and slide groove limitation, has good stability, and is convenient for adjusting the track gauge. It is very suitable for scenarios such as high-speed railways and heavy-load railways where the track gauge needs to be strictly controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram (front view) of the rail support sliding bed plate assembly in use according to the present invention.

[0020] Figure 2 for Figure 1 Top view of .

[0021] Figure 3 Schematic diagram of the base plate structure.

[0022] Figure 4 for Figure 3 Top view of .

[0023] Figure 5 It illustrates the coordination between the rail support and the basic rail.

[0024] Figure 6is a top view of the rail brace.

[0025] Figure 7 is a structural schematic view of the compression block.

[0026] Figure 8 is a bottom view of the rail brace (for showing its bottom rack). Figure 7

[0027] Figure 9 is a structural schematic view of the elastic strip (three views).

[0028] The reference signs in the drawing: base plate 1; rail brace 2; iron seat 3; mounting groove 4; wedge-shaped support part 5; frame-shaped mounting part 6; wedge-shaped part 7; elastic strip 8; compression block 9; bolt 10; point rail 11; main rail 12; slide bed 13. DETAILED DESCRIPTION

[0029] The implementation scheme of the present application is described in detail below in combination with the drawings.

[0030] The rail brace slide bed plate assembly of the present application can be used as a key basic component of a railway turnout switching part for supporting a point rail (or a movable nose rail) and guiding a wheel to smoothly pass through a turnout area.

[0031] As shown in Figure 1-4 , the rail brace slide bed plate assembly includes a base plate 1, on the surface of which a rail brace 2 and a slide bed 13 are oppositely and fixedly installed, which are used in cooperation for fixedly installing a main rail 12. The rail brace 2 includes a wedge-shaped support part 5 and a frame-shaped mounting part 6, which are connected and installed on the base plate 1 through a composite locking structure. The upper part of the slide bed 13 is used for installing a point rail 11, and the inner edge of the slide bed 13 has a recess part, which together with the wedge-shaped support part 5 of the rail brace 2 realizes stable installation of the main rail 12. Through holes are provided at both ends of the base plate 1, and the rail brace slide bed plate assembly is fixedly installed on a sleeper through bolts 10.

[0032] The wedge-shaped support part 5 and the frame-shaped mounting part 6 in the rail brace 2 can be respectively made by casting or milling process, and are tightly fitted during installation and are compressed by an elastic strip 8 and a compression block 9. In order to strengthen the connection stability, it is preferred that the rail brace 2 is made by casting or milling process, that is, the wedge-shaped support part 5 and the frame-shaped mounting part 6 form an integral structure (as shown in Figure 5 , Figure 6 ). The wedge-shaped support part 5 has a wedge-shaped part 7 extending upward, which is used for abutting against the rail waist side surface of the main rail; the wedge-shaped part 7 can be in the shape of a quadrangular frustum.

[0033] In order to realize stable installation of the rail brace 2 and avoid displacement during long-term operation, the present application adopts a composite locking structure to fix the rail brace 2. The composite locking structure includes the elastic strip 8, the compression block 9, and an iron seat 3 and a mounting groove 4 provided on the base plate 1.

[0034] ​In order to facilitate the installation of the composite locking structure, the present invention proposes a new improved design for the traditional rail support and base plate structure, specifically including: (1) Improvements to base plate 1 The mounting groove 4 on the bottom plate 1 is arranged on the outside of the iron base 3. There is an acute angle α between the mounting groove 4 and the base rail 12, and the angle range of the angle α can be selected within 5 ° The mounting groove 4 is used to mount the rail support 2, and the two cooperate to prevent the displacement of the base rail 12 in the X-axis direction, thereby achieving a limiting effect.

[0035] The iron base 3 has a rectangular cross-section and is welded to the base plate 1. A transverse through-hole or cavity is provided in the iron base 3 for inserting the mounting end of the spring bar 8. Alternatively, the iron base 3 can be designed with a gate-shaped longitudinal cross-section. It is understood that the iron base 3 should preferably be installed on the base plate 1 parallel to the mounting slot 4. This design is more intuitive and conforms to the processing and installation practices of this type of product.

[0036] (2) Improvements to Block 9 The clamping block 9 has a shape that adapts to the upper surface of the rail support 2 and is wide enough to cover most of the frame-shaped mounting portion 6 in the rail support 2 and a portion of the wedge-shaped support portion 5. The central portion of the clamping block 9 has a frame-shaped opening that adapts to the cross-sectional shape of the iron base 3 and fits within the iron base 3. The upper surface of the clamping block 9 is provided with an arcuate groove that adapts to the shape of the spring bar 8 for mounting and limiting. The lower surface of the clamping block 9 has at least one tooth-shaped structure.

[0037] (3) Improvements to rail support 2 A recessed portion is provided at the lower edge of the wedge-shaped support portion 5 for pressing against the bottom surface of the basic rail 12. The frame-shaped mounting portion 6 of the rail support 2 has a frame-shaped opening in the middle, and a downwardly extending ridge-shaped protrusion located on the outside of the frame-shaped opening, the shape and orientation of which are adapted to the mounting groove 4 on the base plate 1. On the upper surface of the frame-shaped mounting portion 6, there is a tooth-shaped structure adapted to the pressure block 9. The frame-shaped opening of the rail support 2 is slightly larger than the transverse cross-sectional dimension of the iron base 3, so that the rail support 2 can move appropriately and ensure a certain adjustment margin. In order to facilitate the limited installation of the rail support 2 on the base plate 1, the outer edge of the wedge-shaped support portion 5 and the axis of symmetry of the frame-shaped opening in the frame-shaped mounting portion 6 have an acute angle α; this design is more intuitive and conforms to the processing and installation habits of such products.

[0038] (4) As a further option: Two tooth-shaped structures are arranged in parallel on both side edges of the frame-shaped opening of the rail support 2 , and two tooth-shaped structures are arranged in parallel on both side edges of the frame-shaped opening of the pressing block 9 .

[0039] (5) During installation, first fit the frame-shaped opening of the rail support 2 onto the iron base 3, and embed the ridge-shaped protrusion at the bottom of the rail support 2 into the installation groove 4. Then move the rail support 2 slightly in the installation groove 4 so that its wedge-shaped portion 7 can rest firmly on the waist of the base rail 12, generating static friction. Then nest the pressure block 9 and install it on the iron base 3, and make the lower surface of the pressure block 9 engage with the tooth-shaped structure on the surface of the rail support 2. Finally, insert the spring bar 8 into the installation hole of the iron base 3, and use its elastic deformation to firmly install the pressure block 9 and the rail support 2 on the base plate 1 in turn. The design of the spring bar 8 can comply with the existing standard TB / T 3570-2021. When installing, it only needs to be fitted into the iron base 3. The entire installation and locking process does not require the use of traditional bolt assemblies, so the operation is simple and can improve work efficiency.

[0040] After a train has been running for a while, the stock rail 12 and the switch rail 11 will gradually wear out or require other track gauge adjustments. In these cases, the track gauge needs to be adjusted. To do this, simply remove the spring clip 8, move the rail support 2 along the mounting slot 4 to the appropriate position to adjust the track gauge, and then reattach the spring clip 8. The adjustment process is simple and quick, and there's no chance of loosening.

[0041] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various variations or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A rail support and slide bed assembly based on a composite locking structure, comprising a base plate, on the surface of which rail supports and a slide bed are fixedly mounted relative to each other, the two being mutually coordinated to fix and mount the base rail; characterized in that: The rail support includes a wedge-shaped support portion and a frame-shaped mounting portion, which are connected and mounted on the base plate through a composite locking structure; wherein, The composite locking structure includes a spring bar, a pressure block, and an iron seat and a mounting groove provided on the bottom plate; The wedge-shaped support portion of the rail support has an upwardly extending wedge-shaped portion for abutting against the side surface of the waist of the stock rail; a recessed portion is provided at the lower edge of the wedge-shaped support portion for pressing against the bottom surface of the stock rail; the frame-shaped mounting portion of the rail support has a frame-shaped opening in the middle and a ridge-shaped protrusion extending downward; and at least one tooth-shaped structure is provided on the upper surface of the frame-shaped mounting portion; There is an acute angle α between the mounting groove on the base plate and the basic rail, the rail support is fitted on the iron base with its frame-shaped opening, and the ridge-shaped protrusion is embedded in the mounting groove; the middle part of the pressure block has a frame-shaped opening and is fitted on the iron base, the elastic bar is inserted into the mounting hole of the iron base, and the pressure block and the rail support are firmly mounted on the base plate in sequence through elastic deformation; there is at least one tooth-shaped structure on the lower surface of the pressure block, which is engaged with the tooth-shaped structure on the surface of the frame-shaped mounting portion.

2. The rail-supported sliding bed assembly according to claim 1, characterized in that: The mounting groove on the bottom plate is arranged on the outside of the iron seat; accordingly, the ridge-shaped protrusion of the frame-shaped mounting portion is located on the outside of the frame-shaped opening.

3. The rail-supported sliding bed assembly according to claim 1, characterized in that: The pressing block has a shape that is adapted to the upper surface of the rail support, and its frame-shaped opening has a shape that is adapted to the cross section of the iron seat; an arc groove that is adapted to the shape of the elastic bar is provided on the upper surface of the pressing block for installation and limiting.

4. The rail-supported sliding bed assembly according to claim 1, characterized in that: The cross section of the iron seat is rectangular and is fixed to the base plate by welding; a transverse through hole or cavity is provided on the iron seat for inserting the mounting end of the elastic bar.

5. The rail-supported sliding bed plate assembly according to claim 1, characterized in that: Two tooth-shaped structures are arranged in parallel on both side edges of the frame-shaped opening of the rail support, and two tooth-shaped structures are arranged in parallel on both side edges of the frame-shaped opening of the pressing block.

6. The rail-supported sliding bed assembly according to claim 1, characterized in that: The wedge-shaped portion of the rail support is in the shape of a quadrangular pyramid; the outer edge of the wedge-shaped support portion and the symmetry axis of the frame-shaped opening in the frame-shaped mounting portion have an acute angle α, the angle range of which is 5 ° ~6°.

7. The rail-supported sliding bed assembly according to claim 1, characterized in that: The iron seat has a gate-shaped longitudinal cross-section.

8. The rail-supported sliding bed assembly according to claim 1, characterized in that: The rail support is an integrated structure comprising a wedge-shaped support portion and a frame-shaped mounting portion, manufactured by a casting or milling process; or, the wedge-shaped support portion and the frame-shaped mounting portion in the rail support are respectively manufactured by a casting or milling process, and the two fit tightly together during installation and are compressed by the elastic bars and the pressure blocks.

9. The rail-supported sliding bed plate assembly according to claim 1, characterized in that: The upper part of the slide bed is provided with a pointed rail or a movable heart rail; the inner edge of the slide bed is provided with a recessed portion, which together with the wedge-shaped supporting portion of the rail support realizes the stable installation of the basic rail.

10. The rail-supported sliding bed plate assembly according to claim 1, characterized in that: Through holes are provided at both ends of the bottom plate, and the rail support sliding bed plate assembly is fixedly installed on the sleeper by means of bolts.

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