CN210341620U - Expansion joint device for overhead rail transit steel bridge - Google Patents
Expansion joint device for overhead rail transit steel bridge Download PDFInfo
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- CN210341620U CN210341620U CN201920415167.2U CN201920415167U CN210341620U CN 210341620 U CN210341620 U CN 210341620U CN 201920415167 U CN201920415167 U CN 201920415167U CN 210341620 U CN210341620 U CN 210341620U
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- end seat
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Abstract
The expansion joint device for the overhead rail transit steel bridge effectively improves the driving comfort, and improves the using effect and the service life of the expansion joint device. The first beam end seat plate, the second beam end seat plate and the seam crossing triangular plate are included, and the upper surface of the first beam end seat plate is flush with the top surface of the track beam bottom plate. First beam-ends bedplate, second beam-ends bedplate fixed mounting respectively are at the beam-ends of adjacent track roof beam, and adjacent plate body lateral wall forms the expansion joint along the bridge direction interval, has the triangle-shaped heavy groove that holds the triangle-shaped of striding seam set-square on the plate body. The surface of the joint-crossing triangular plate is in a regular triangle shape, two right-angle side walls are respectively contacted with the inner side walls of triangular sinking grooves of the first beam end base plate and the second beam end base plate, and a vertical limiting structure is arranged between the first beam end base plate and the second beam end base plate and the joint-crossing triangular plate. And a plane wear-resisting plate is arranged between the bottom surface of the seam-crossing triangular plate and the bottom surface of the triangular sinking groove.
Description
Technical Field
The utility model relates to a track traffic, in particular to air track traffic steel bridge expansion joint device.
Background
With the development of modern traffic networks, air rail transit also begins to grow rapidly in China, and the characteristics of small occupied area, low cost and short construction period of the air rail transit are favored by domestic traffic builders. As the air rail transit belongs to the early development stage in China, the whole line adopts a suspended bridge structure form, and the pier beams are in a steel structure form, so that the structural rigidity is lower than that of a highway bridge and a railway bridge; the expansion joint of junction belongs to the weak link between the roof beam body, connects the little easy fatigue destruction of rigidity on the one hand, and on the other hand tradition expansion joint is vertical or horizontal all has the gap of being interrupted of practical meaning, and the driving travelling comfort is poor, and the noise is great. In order to solve the problems of the connection device between the beam bodies, higher requirements are put on the expansion joint of the connection device of the beam bodies. The telescopic seam device of the air rail transit steel bridge provides a set of excellent solutions for newly-built bridges or lifting and reforming existing bridges.
The expansion joint of the existing air rail transit steel bridge is divided into a comb plate form and a seamless form. The comb plate type expansion joint has discontinuous gaps with practical significance longitudinally or transversely, the driving comfort is poor, and the noise is large. The seamless form expansion joint eliminates a tangible gap, solves the problem of connection continuity between beam bodies, has no high-rigidity positioning guide device, has high installation precision requirement, and is easy to wear parts because the seamless form expansion joint has relative sliding among the parts and no special friction pair, and the service life of the expansion joint is greatly reduced.
The triangular plate expansion joint connecting device and the bottom positioning guide mechanism are arranged, so that the continuity and the rigidity of the longitudinal plane of the expansion joint are expanded on the basis of realizing the function of a common expansion joint, the beams are connected seamlessly and are transited stably, and the driving comfort is greatly improved; and meanwhile, a friction pair structure is added, so that the using effect and the service life of the expansion joint are improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an air rail transit steel bridge expansion joint device is provided to effectively improve the driving travelling comfort, improve expansion joint device's result of use and life.
The utility model provides a technical scheme that its technical problem adopted as follows:
the utility model discloses an air rail transit steel bridge expansion joint device, characterized by: the upper surface of the first beam end seat plate is flush with the top surface of the track beam bottom plate; the first beam end seat plate and the second beam end seat plate are respectively and fixedly arranged at the beam ends of adjacent track beams, the side walls of adjacent plate bodies form expansion joints at intervals along the bridge direction, and triangular sinking grooves for accommodating seam-crossing triangular plates are formed in the plate bodies; the plate surface of the seam-crossing triangular plate is in a regular triangle shape, the side walls of two right-angle sides are respectively contacted with the inner side walls of triangular sunken grooves of the first beam end seat plate and the second beam end seat plate, and vertical limiting structures are arranged between the first beam end seat plate and the seam-crossing triangular plate; and a plane wear-resisting plate is arranged between the bottom surface of the seam-crossing triangular plate and the bottom surface of the triangular sinking groove.
The utility model has the advantages that on the basis of realizing the function of the common expansion joint, the continuity and the rigidity of the longitudinal plane of the expansion joint are expanded, so that the beams are connected seamlessly and transited stably, and the driving comfort is greatly improved; the friction pair structure is additionally arranged on the beam end seat plate and the seam crossing triangular plate, so that the using effect and the service life of the expansion joint device are improved.
Drawings
The specification includes the following seven drawings:
FIG. 1 is a diagram showing the status of the expansion joint device of the overhead rail transit steel bridge of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is an enlarged view of portion C of FIG. 3;
FIG. 5 is a top view of the first beam end seat plate and the second beam end seat plate in the telescopic joint device of the air rail transit steel bridge of the present invention;
FIG. 6 is a front view of the first beam end seat plate and the second beam end seat plate in the telescopic joint device of the air rail transit steel bridge of the present invention;
fig. 7 is the utility model discloses overhead rail transit steel bridge expansion joint device midspan seam set square top view.
The figures show the components and corresponding references: the beam end mounting plate comprises a web plate 10, a bottom plate 11, a beam end mounting plate 12, a guide groove 20, a positioning guide block 21, a bolt 22, a positioning bolt 23, a seam crossing triangular plate 30, a plane wear-resisting plate 31, a flange 32, a first beam end seat plate 40, a second beam end seat plate 41, a triangular sinking groove 42 and a guide groove 43.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1, 2, 3 and 4, the expansion joint device for an overhead rail transit steel bridge of the present invention includes a first beam-end seat plate 40, a second beam-end seat plate 41 and a span-joint triangle plate 30, wherein the upper surface of the first beam-end seat plate is parallel and level with the top surface of the rail beam-end seat plate 11, which constitutes a running surface of a train. The first beam end seat plate 40 and the second beam end seat plate 41 are respectively and fixedly installed at the beam ends of adjacent track beams, expansion joints are formed at the side walls of adjacent plate bodies at intervals along the bridge direction, and triangular sinking grooves 42 for accommodating the expansion joint triangular plates 30 are formed in the plate bodies. The surface of the seam-crossing triangular plate 30 is in a regular triangle shape, and two right-angle side walls are respectively contacted with the inner side walls of the triangular sunken grooves 42 of the first beam end seat plate 40 and the second beam end seat plate 41. Vertical limiting structures are arranged among the first beam end seat plate 40, the second beam end seat plate 41 and the seam crossing triangular plate 30. When the width at expansion joint changed, the triangle-shaped heavy groove 42 inside wall of first beam-ends bedplate 40, second beam-ends bedplate 41 was used for and on two right-angle side lateral walls of striding seam set-square 30, made to stride seam set-square 30 along the length direction removal of expansion joint, has expanded expansion joint longitudinal plane's continuity and rigidity for seamless connection between roof beam and the roof beam, smooth transition improves driving comfort greatly.
Referring to fig. 3 and 4, a plane wear-resisting plate 31 is arranged between the bottom surface of the seam-crossing triangular plate 30 and the bottom surface of the triangular sinking groove 42, so that the use effect and the service life of the expansion joint device are effectively improved.
Referring to fig. 4, 5, 6 and 7, the vertical limiting structure includes an inclined straight guide groove 43 below the inner side wall of the triangular sinking groove 42, and an outwardly and downwardly protruding guide flange 32 disposed below the two right-angle side walls of the seam-crossing triangular plate 30, and the inclined straight guide groove 43 and the guide flange 32 extend at 45 degrees relative to the length direction of the expansion joint. The stitch-spanning triangle 30 base angle is set at 45 degrees so that the lateral displacement remains 2: 1, the design value is convenient to select, and the relationship between the displacement and the longitudinal and transverse sizes of the expansion joint is coordinated.
Referring to fig. 3 and 4, the guide flanges 32 on both sides are respectively inserted into the inclined straight guide grooves 43 on the same side and fastened with each other to form vertical restraint. The sliding guide of the seam crossing triangular plate 30 is realized, the horizontal rigidity of the seam crossing triangular plate 30 is ensured, and the seam crossing triangular plate 30 is prevented from jumping. Referring to fig. 7, in order to better accommodate a small amount of deformation during construction and sliding, the outer side wall of the guide flange 32 is formed in a laterally outwardly convex arc shape.
Referring to fig. 3 and 4, the planar wear-resistant plate 31 may be made of modified ultra-high molecular weight polyethylene plate, and is mounted on the bottom surfaces of the triangular recesses 42 of the first beam end seat plate 40 and the second beam end seat plate 41 by means of insert fastening or welding.
Referring to fig. 1, a beam-end mounting plate 12 is welded at a beam end on a rail beam bottom plate 11, a first beam-end seat plate 40 and a second beam-end seat plate 41 are arranged on the beam-end mounting plate 12, a guide groove 20 extending along a bridge direction is welded and fixed on the bottom surface of the beam-end mounting plate 12, and a positioning guide block 21 is arranged in the guide groove 20. The connecting bolts 22 longitudinally spaced on the first beam end seat plate 40 and the second beam end seat plate 41 pass through the beam end mounting plate 12, the guide groove 20 and the positioning guide block 21. The guide groove 20 and the positioning guide block 21 are matched to realize the positioning of the first beam end seat plate 40 and the second beam end seat plate 41, and the sufficient rigidity of the joint of the expansion joint is ensured. In order to adjust the positioning guide block 21 to the construction error, positioning bolts 23 acting on the positioning guide block 21 are provided on the bottom and side surfaces of the guide groove 20.
The above is only used for illustration the utility model discloses some principles of aerial rail transit steel bridge expansion joint device, not will the utility model discloses the limitation show with concrete structure and application scope in, all corresponding revisions and equivalents that probably are utilized all belong to the utility model discloses the patent range who applies for.
Claims (6)
1. An expansion joint device of an air rail transit steel bridge is characterized in that: the cross joint triangular plate comprises a first beam end seat plate (40), a second beam end seat plate (41) and a cross joint triangular plate (30), wherein the upper surface of the cross joint triangular plate is flush with the top surface of a track beam bottom plate (11); the first beam end seat plate (40) and the second beam end seat plate (41) are respectively and fixedly arranged at the beam ends of adjacent track beams, the side walls of adjacent plate bodies form expansion joints at intervals along the bridge direction, and triangular sinking grooves (42) for accommodating the seam-crossing triangular plates (30) are formed in the plate bodies; the plate surface of the seam-crossing triangular plate (30) is in a regular triangle shape, the side walls of two right-angle sides are respectively contacted with the inner side walls of triangular sunken grooves (42) of a first beam end seat plate (40) and a second beam end seat plate (41), and a vertical limiting structure is arranged between the first beam end seat plate (40), the second beam end seat plate (41) and the seam-crossing triangular plate (30); and a plane wear-resisting plate (31) is arranged between the bottom surface of the seam-crossing triangular plate (30) and the bottom surface of the triangular sinking groove (42).
2. The expansion joint device for an overhead rail transit steel bridge as claimed in claim 1, wherein: vertical limit structure includes oblique straight guide way (43) under triangle-shaped heavy groove (42) inside wall to and set up outside, downwardly convex direction flange (32) under two right-angle side lateral walls of striding seam set-square (30), oblique straight guide way (43), direction flange (32) are 45 degrees extensions for expansion joint length direction, and both sides direction flange (32) insert respectively in homonymy oblique straight guide way (43) each other and buckle and form vertical restraint.
3. The expansion joint device for the overhead rail transit steel bridge as claimed in claim 2, wherein: the outer side wall of the guide flange (32) is in a transverse convex arc shape.
4. The expansion joint device for an overhead rail transit steel bridge as claimed in claim 1, wherein: the plane wear-resisting plate (31) is a modified ultra-high molecular weight polyethylene plate and is fixedly embedded or welded on the bottom surfaces of the triangular sinking grooves (42) of the first beam end seat plate (40) and the second beam end seat plate (41).
5. The expansion joint device for an overhead rail transit steel bridge as claimed in claim 1, wherein: a beam end mounting plate (12) is welded at the beam end on the track beam bottom plate (11), a first beam end base plate (40) and a second beam end base plate (41) are arranged on the beam end mounting plate (12), a guide groove (20) extending along the bridge direction is fixedly welded on the bottom surface of the beam end mounting plate (12), and a positioning guide block (21) is arranged in the guide groove (20); connecting bolts (22) longitudinally arranged on the first beam end base plate (40) and the second beam end base plate (41) at intervals penetrate through the beam end mounting plate (12), the guide groove (20) and the positioning guide block (21).
6. The expansion joint device for the overhead rail transit steel bridge as claimed in claim 5, wherein: and positioning bolts (23) acting on the positioning guide blocks (21) are arranged at the bottom and the side surfaces of the guide groove (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415167.2U CN210341620U (en) | 2019-03-29 | 2019-03-29 | Expansion joint device for overhead rail transit steel bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415167.2U CN210341620U (en) | 2019-03-29 | 2019-03-29 | Expansion joint device for overhead rail transit steel bridge |
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| Publication Number | Publication Date |
|---|---|
| CN210341620U true CN210341620U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920415167.2U Active CN210341620U (en) | 2019-03-29 | 2019-03-29 | Expansion joint device for overhead rail transit steel bridge |
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| CN (1) | CN210341620U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112663411A (en) * | 2020-12-09 | 2021-04-16 | 江西理工大学 | Seamless docking mechanism of suspension type track roof beam |
| CN109868736B (en) * | 2019-03-29 | 2024-06-28 | 四川迈铁龙科技有限公司 | Expansion joint device for steel bridge of air rail transit |
-
2019
- 2019-03-29 CN CN201920415167.2U patent/CN210341620U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868736B (en) * | 2019-03-29 | 2024-06-28 | 四川迈铁龙科技有限公司 | Expansion joint device for steel bridge of air rail transit |
| CN112663411A (en) * | 2020-12-09 | 2021-04-16 | 江西理工大学 | Seamless docking mechanism of suspension type track roof beam |
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