A retractable railway bridge cover

Abstract

The present invention belongs to the technical field of bridge engineering, and specifically relates to a retractable railway bridge cover, including a first fixed cover, a second fixed cover and a movable cover; the first fixed cover and the second fixed cover are respectively fixedly laid on the cable troughs on both sides of the beam joint, one end of the movable cover is placed between the first fixed cover and the cable trough and fixedly connected to the first fixed cover, and the other end of the movable cover spans the beam joint to extend between the second fixed cover and the cable trough and is in sliding contact with the second fixed cover. The retractable railway bridge cover provided by the present invention not only has the functions of a conventional cover, but also has a certain amount of expansion and contraction to adapt to the changes in the beam joint, maintains continuity at the beam joint, and avoids excessive beam end gaps that affect safety and convenience; at the same time, it is safe and reliable, easy to assemble and disassemble, and convenient for cable maintenance.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a retractable railway bridge cover. Background Art

[0002] In addition to shielding foreign objects and protecting cables, the cable trough cover of railway bridges also forms a pedestrian passage for line maintenance. The cover is usually made of reinforced concrete cover or RPC cover and placed on the vertical wall. At the end of the bridge beam, the cover is usually flush with the edge of the vertical wall. Since there is a beam gap between adjacent beams, the cover plates of adjacent beams are not continuous. In medium and large span bridges, due to the large beam gap, the gap between the cover plates is large, which poses certain safety hazards.

[0003] Therefore, it is necessary to design a retractable railway bridge cover to overcome the above problems. Summary of the invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a retractable railway bridge cover, which is not only safe and reliable, and easy to assemble and disassemble, but also can adapt to the expansion and contraction deformation of the beam ends, so that the cover is continuous at the joints between adjacent beams, thereby avoiding the impact of excessive beam end gaps on safety and convenience.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is a retractable railway bridge cover, comprising a first fixed cover, a second fixed cover and a movable cover; the first fixed cover and the second fixed cover are respectively fixedly laid on the cable troughs on both sides of the beam joint, one end of the movable cover is placed between the first fixed cover and the cable trough and is fixedly connected to the first fixed cover, and the other end of the movable cover crosses the beam joint and extends between the second fixed cover and the cable trough and is in sliding contact with the second fixed cover.

[0006] Further, the movable cover plate includes a first movable cover plate and a second movable cover plate arranged side by side; one end of the first movable cover plate is fixedly connected to the first fixed cover plate, and the other end of the first movable cover plate spans the beam gap and is in sliding contact with the second fixed cover plate; one end of the second movable cover plate is fixedly connected to the first fixed cover plate, and the other end of the second movable cover plate spans the beam gap and is in sliding contact with the second fixed cover plate.

[0007] Furthermore, the end of the first movable cover plate facing away from the first fixed cover plate has rounded corners around it, and the end of the second movable cover plate facing away from the first fixed cover plate has rounded corners around it.

[0008] Furthermore, the first fixed cover plate and the second fixed cover plate are connected with a first L-shaped plate, an inverted T-shaped plate and a second L-shaped plate in sequence in the width direction; one side of the first movable cover plate is placed on a horizontal plate on one side of the vertical plate of the inverted T-shaped plate, and the other side of the first movable cover plate is placed on the first L-shaped plate; one side of the second movable cover plate is placed on a horizontal plate on the other side of the vertical plate of the inverted T-shaped plate, and the other side of the second movable cover plate is placed on the second L-shaped plate.

[0009] Furthermore, a vertical baffle is also connected to the horizontal plate on the other side of the vertical plate of the inverted T-shaped plate connected to the second fixed cover plate.

[0010] Furthermore, a notch is provided on the second movable cover plate at a position corresponding to the vertical baffle.

[0011] Furthermore, the cable trough includes side vertical walls and a middle vertical wall vertically arranged in sequence, a protective wall or a ballast retaining wall is vertically arranged on the side of the middle vertical wall away from the side vertical wall, and the first fixed cover plate and the second fixed cover plate are fixedly connected to the middle vertical wall of the corresponding cable trough through anchors respectively.

[0012] Furthermore, one end of the middle vertical wall close to the beam gap is widened, and the anchor is fixed to the widened portion of the middle vertical wall.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The retractable railway bridge cover provided by the present invention not only has the functions of a conventional cover, but also has a certain amount of expansion and contraction to adapt to the changes in the beam joints, maintains continuity at the beam joints, and avoids excessive gaps at the beam ends that affect safety and convenience;

[0015] (2) The retractable railway bridge cover provided by the present invention is safe and reliable, easy to assemble and disassemble, and convenient for cable maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 An elevation view of a retractable railway bridge cover provided by an embodiment of the present invention;

[0018] Figure 2 A plan view of a retractable railway bridge cover provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of a retractable railway bridge cover provided by an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of an end of a movable cover plate facing away from one end of a first fixed cover plate provided in an embodiment of the present invention;

[0021] Figure 5 A cross-sectional view of a first fixed cover plate and a second fixed cover plate provided in an embodiment of the present invention;

[0022] Figure 6 A cross-sectional view of a first movable cover plate and a second movable cover plate provided in an embodiment of the present invention;

[0023] Figure 7 A plan view of a second movable cover provided in an embodiment of the present invention;

[0024] In the figure: 1. first fixed cover plate, 2. second fixed cover plate, 3. movable cover plate, 31. first movable cover plate, 32. second movable cover plate, 4. cable trough, 41. side vertical wall, 42. middle vertical wall, 43. protective wall, 5. beam body, 6. beam joint, 7. anchor, 8. first L-shaped plate, 9. inverted T-shaped plate, 10. second L-shaped plate, 11. vertical baffle plate, 12. notch, 13. water retaining platform. DETAILED DESCRIPTION

[0025] 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.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] like Figure 1 As shown, an embodiment of the present invention provides a retractable railway bridge cover, including a first fixed cover 1, a second fixed cover 2 and a movable cover 3; the first fixed cover 1 and the second fixed cover 2 are respectively fixedly laid on the cable trough 4 on both sides of the beam gap 6, one end of the movable cover 3 is placed between the first fixed cover 1 and the cable trough 4 and is fixedly connected to the first fixed cover 1, and the other end of the movable cover 3 spans the beam gap 6 and extends between the second fixed cover 2 and the cable trough 4 and is in sliding contact with the second fixed cover 2. The retractable railway bridge cover of the embodiment of the present invention not only has a certain strength and rigidity, can shield the cable trough and protect the cable, but also has a certain amount of expansion to adapt to the expansion and contraction deformation of the beam end, so that the cover is continuous at the beam gap of adjacent beams, thereby avoiding excessive beam end gaps that affect the safety and convenience of maintenance.

[0029] Further, the movable cover plate 3 includes a first movable cover plate 31 and a second movable cover plate 32 arranged side by side; one end of the first movable cover plate 31 is firmly welded to the first fixed cover plate 1, and the other end of the first movable cover plate 31 crosses the beam gap 6 and slides in contact with the second fixed cover plate 2; one end of the second movable cover plate 32 is firmly welded to the first fixed cover plate 1, and the other end of the second movable cover plate 32 crosses the beam gap 6 and slides in contact with the second fixed cover plate 2. Figure 6 As shown, in this embodiment, the movable cover plate 3 is divided into a first movable cover plate 31 and a second movable cover plate 32 which are independent of each other.

[0030] Furthermore, the end of the first movable cover plate 31 away from the first fixed cover plate 1 is rounded, and the end of the second movable cover plate 32 away from the first fixed cover plate 1 is rounded. Figure 4 As shown, the movable cover plate 3 of this embodiment includes a first movable cover plate 31 and a second movable cover plate 32, and the ends away from the end connected to the first fixed cover plate 1 are polished into smooth rounded corners around to facilitate sliding.

[0031] Furthermore, if Figure 5As shown, the first fixed cover plate 1 and the second fixed cover plate 2 are connected with the first L-shaped plate 8, the inverted T-shaped plate 9 and the second L-shaped plate 10 in sequence in the width direction; one side of the first movable cover plate 31 is placed on the horizontal plate on one side of the vertical plate of the inverted T-shaped plate 9, and the other side of the first movable cover plate 31 is placed on the first L-shaped plate 8; one side of the second movable cover plate 32 is placed on the horizontal plate on the other side of the vertical plate of the inverted T-shaped plate 9, and the other side of the second movable cover plate 32 is placed on the second L-shaped plate 10. The first fixed cover plate 1, the second fixed cover plate 2, the first movable cover plate 31, the second movable cover plate 32, the first L-shaped plate 8, the inverted T-shaped plate 9 and the second L-shaped plate 10 of this embodiment are all steel plates, the first L-shaped plate 8 is placed on the side vertical wall 41, the inverted T-shaped plate 9 is placed on the middle vertical wall 42, and the second L-shaped plate 10 is placed on the protective wall 43.

[0032] Furthermore, a vertical baffle 11 is also connected to the horizontal plate on the other side of the vertical plate of the inverted T-shaped plate 9 connected to the second fixed cover plate 2. Furthermore, a notch 12 is provided on the second movable cover plate 32 at a position corresponding to the vertical baffle 11. The second fixed cover plate 2 of this embodiment is fixed to the middle vertical wall 42 by the anchor 7, and the vertical baffle 11 is arranged close to the anchor 7. The vertical baffle 11 is stuck in the notch 12 of the second movable cover plate 32 to prevent the anchor 7 from causing the cover plate to fail to achieve the telescopic function.

[0033] Furthermore, the cable trough 4 includes a side vertical wall 41 and a middle vertical wall 42 which are arranged vertically in sequence, and a protective wall 43 or a ballast retaining wall is arranged vertically on the side of the middle vertical wall 42 away from the side vertical wall, and the first fixed cover plate 1 and the second fixed cover plate 2 are respectively fixedly connected to the middle vertical wall 42 of the corresponding cable trough 4 through anchors 7. Furthermore, one end of the middle vertical wall 42 close to the beam joint 6 is widened, and the anchor 7 is fixed to the widened portion of the middle vertical wall 42. Figure 1 , Figure 2 and Figure 6 As shown, the middle vertical walls 42 on both sides of the beam seam 6 are partially widened, and the first fixed cover plate 1 and the second fixed cover plate 2 are fixedly connected to the widened parts of the corresponding middle vertical walls 42 through anchors 7, respectively, wherein the anchors 7 can be bolts or the like.

[0034] like Figure 2 As shown, the beam seams of adjacent beams are provided with the retractable railway bridge cover of this embodiment, wherein C1, C2, D1, and D2 are the cable trough (pedestrian walkway) covers in Tongqiao (2016) 8388A. As an example, Figure 1As shown, taking the beam gap of 250mm, the cable trough gap of 190mm, and the telescopic amount of ±160mm as an example, the first movable cover plate 31 is 327mm long, the second movable cover plate 32 is 444mm long, the first movable cover plate 31 and the second movable cover plate 32 are 420mm long, one end of the first movable cover plate 31 or the second movable cover plate 32 extends into the first fixed cover plate 1 by 50mm and is welded and fixed to the first fixed cover plate 1, and the other end of the first movable cover plate 31 or the second movable cover plate 32 extends into the second fixed cover plate 2 by 180mm and is in sliding contact with the second fixed cover plate 2, realizing the telescopic function to adapt to the changes in the beam gap, making the maintenance channel continuous, eliminating safety hazards, and facilitating installation and replacement, and having good application prospects.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A retractable railway bridge cover, characterized in that: The invention comprises a first fixed cover plate, a second fixed cover plate and a movable cover plate; the first fixed cover plate and the second fixed cover plate are respectively fixedly laid on the cable troughs on both sides of the beam gap, one end of the movable cover plate is placed between the first fixed cover plate and the cable trough and is fixedly connected to the first fixed cover plate, the other end of the movable cover plate spans the beam gap and extends between the second fixed cover plate and the cable trough and is in sliding contact with the second fixed cover plate; the movable cover plate comprises a first movable cover plate and a second movable cover plate arranged side by side; one end of the first movable cover plate is fixedly connected to the first fixed cover plate, the other end of the first movable cover plate spans the beam gap and is in sliding contact with the second fixed cover plate The fixed cover plate is in sliding contact; one end of the second movable cover plate is fixedly connected to the first fixed cover plate, and the other end of the second movable cover plate spans the beam gap and is in sliding contact with the second fixed cover plate; the first fixed cover plate and the second fixed cover plate are connected with a first L-shaped plate, an inverted T-shaped plate and a second L-shaped plate in sequence in their width direction; one side of the first movable cover plate is placed on a horizontal plate on one side of the vertical plate of the inverted T-shaped plate, and the other side of the first movable cover plate is placed on the first L-shaped plate; one side of the second movable cover plate is placed on a horizontal plate on the other side of the vertical plate of the inverted T-shaped plate, and the other side of the second movable cover plate is placed on the second L-shaped plate.

2. A retractable railway bridge cover as claimed in claim 1, characterized in that: The end of the first movable cover plate facing away from the first fixed cover plate has rounded corners around it, and the end of the second movable cover plate facing away from the first fixed cover plate has rounded corners around it.

3. A retractable railway bridge cover as claimed in claim 1, characterized in that: A vertical baffle is also connected to the horizontal plate on the other side of the vertical plate of the inverted T-shaped plate connected to the second fixed cover plate.

4. A retractable railway bridge cover as claimed in claim 3, characterized in that: A notch is provided on the second movable cover plate at a position corresponding to the vertical baffle.

5. A retractable railway bridge cover as claimed in claim 1, characterized in that: The cable trough includes side vertical walls and a middle vertical wall which are vertically arranged in sequence. A protective wall or a ballast retaining wall is vertically arranged on the side of the middle vertical wall away from the side vertical wall. The first fixed cover plate and the second fixed cover plate are fixedly connected to the middle vertical wall of the corresponding cable trough through anchors respectively.

6. A retractable railway bridge cover as claimed in claim 5, characterized in that: The middle vertical wall is widened at one end close to the beam seam, and the anchor is fixed to the widened portion of the middle vertical wall.

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