CN201835226U - Module expansion device for bridges - Google Patents
Module expansion device for bridges Download PDFInfo
- Publication number
- CN201835226U CN201835226U CN2010202708252U CN201020270825U CN201835226U CN 201835226 U CN201835226 U CN 201835226U CN 2010202708252 U CN2010202708252 U CN 2010202708252U CN 201020270825 U CN201020270825 U CN 201020270825U CN 201835226 U CN201835226 U CN 201835226U
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- CN
- China
- Prior art keywords
- control spring
- compression control
- supporting
- central sill
- displacement
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a module expansion device suitable for bridges in roads and city highways. The expansion device is characterized in that compression control springs of a displacement control system are installed in a positive-negative direction coupled mode, a displacement box is arranged, the compression control spring is arranged between supporting hangers, a reversed-installed compression control spring, a positive-installed compression control spring and a reversed-installed compression control spring are sequentially arranged on a gap between a boundary beam steel and a middle beam along a cross beam from left to right, or a positive-installed compression control spring, a reversed-installed compression control spring and a positive-installed compression control spring are sequentially arranged on a gap between a boundary beam steel and a middle beam along a cross beam from left to right. If a reversed-installed compression control spring is arranged in the front of two sides of the cross beam, a positive-installed compression control spring at the back of two sides of the cross beam. The module expansion device is compact in design, can operate well and has even gap between the middle beam steel and the boundary beam steel since the springs are arranged in a positive-negative direction coupled mode, and accordingly, uneven expansion between beams of large displacement expansion device in home and abroad is avoided.
Description
Technical field
The utility model relates to the technology of highway and urban road bridge aspect, and concrete what is said or talked about is a kind of stretching device that is applicable to highway and urban road bridge, and so-called stretching device is a vitals of bridge.For making vehicle steadily by bridge floor and satisfy the needs of bridge floor distortion, and anti-sealing and highway rubbish lets out under the shrinkage joint, at the deck expansion joint place this device is set.
Background technology
The stretching device that development and success are used after the eighties in 20 century is modern bridge extension joint.In China following five classes are arranged: 1, modulus formula device 2, deformed steel list seam 3, broach plate apparatus 4, polymer concrete device, 5 elastic body stretching devices.In manufacture and design existing 20 years of highway in China bridge extension joint, production domesticization makes much progress, but at big displacement stretching device, the independent intellectual property right of especially special-purpose deformed steel, displacement control system is few.Also have the design-calculated standard, all also there is the unified and improved place of many needs in taking of material on the standard of the reasonable and installation of technology.Thereby, domestic and international big displacement quantity stretching device product, it is inhomogeneous that subject matter in use mostly is in the operation shaped steel gap, jumps car, and the displacement controlling organization that has lost efficacy.
The utility model content
The purpose of this utility model is to overcome the defective of existing bridge extension joint, improves to some extent on the layout to the displacement control system spring, thereby a kind of modulus formula stretching device of bridge is provided.Technical scheme of the present invention: displacement control system adopts positive and negative its architectural feature of two-way mounted in pairs on the layout of spring be at fixed end supporting displacement case 1, movable end displacement case 13 and supporting suspension bracket A, arrange the compression control spring between the supporting suspension bracket B, on the position in gap between side bar steel 11 and the middle joist steel 3, be arranged as anti-dress compression control spring from left to right successively along crossbeam, formal dress compression control spring, anti-dress compression control spring, also but cloth apparatus is a formal dress compression control spring, anti-dress compression control spring, formal dress compression control spring, and in the both sides of crossbeam, if arranged in front is anti-dress compression control spring, the back then is arranged as formal dress compression control spring.Bridge extension joint is an important component part of bridge construction, and automobile is directly run at high speed on its top, and the reliability of stretching device under dynamic loads is most important.It is tight that product of the present invention has design, and the positive and negative mounted in pairs of spring is to the operation of stretching device, and the good effect of even generation in middle side bar steel gap has thoroughly solved both at home and abroad a flexible uneven difficult problem between displacement stretching device beam and the beam greatly.Adopt the weathering steel lath evenly to distribute in the design of central sill, safety is firm to reach, heat resistanceheat resistant is cold-resistant, the various hazards that not being afraid of expands with heat and contract with cold brings.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is a central sill structural representation of the present utility model
Fig. 3 is a girder construction sectional view among Fig. 2
1, fixed end supporting displacement case 2, connecting bolt A 3, middle joist steel 4, connecting bolt B
5, intermediate plate 6, supporting suspension bracket A 7 supporting suspension bracket B 8, crossbeam
9, formal dress control spring 10, anti-control spring 11, side bar steel 12, the locating piece adorned
13, movable end displacement case 14, middle beam assembly 15, location-plate 16, supporting hanging holder set
17, central sill pressure-bearing supporting 18, central sill compress supporting 19, transverse beam assembly
20, side bar assembly
The specific embodiment
Fig. 1 is a kind of bridge modulus formula stretching device of the present utility model, comprise load bearing system, displacement control system, anchor system, sealing system is formed, it is characterized in that adopting positive and negative two-way mounted in pairs on the layout of compression control spring of displacement control system, its architectural feature is at fixed end supporting displacement case 1, movable end displacement case 13 and supporting suspension bracket A6, arrange the compression control spring between the supporting suspension bracket B7, on the position in gap between side bar steel 11 and the middle joist steel 3, be arranged as anti-dress compression control spring from left to right successively along crossbeam, formal dress compression control spring, anti-dress compression control spring, also but cloth apparatus is a formal dress compression control spring, anti-dress compression control spring, formal dress compression control spring, and in the both sides of crossbeam, if arranged in front is anti-dress compression control spring, the back then is arranged as formal dress compression control spring.
Fig. 2 structure is described described central sill material and is adopted " weathering steel " to arrange the road surface, shrinkage joint.Its structure is that middle beam assembly 14 docks with middle joist steel 3, connect by supporting hanging holder set 16 usefulness bolts, location-plate 15 is fixed by bolts on the central sill, supporting hanging holder set 16 and central sill are with the mutual positioning and fixing of bolt, central sill pressure-bearing supporting 17 is inserted on the location-plate 15, be placed on the crossbeam 8, central sill compresses supporting 18 and is inserted on the location-plate 15, transverse beam assembly 19 is in the middle of central sill pressure-bearing supporting 17, central sill compress supporting 18, and the side bar assembly 20 that presses together is tightened with fixed end supporting displacement case 1 usefulness bolt and is fixed together.
Fig. 3 is the sectional view of central sill spare
Its basic principle is weather when low, and it is big that the slit between the plastic-steel becomes, and the formal dress control spring is to extrapolation (stressed little), and the anti-control spring of adorning is inwardly pressed (stressed big).When weather is high in above-mentioned opposite.No matter temperature height control spring is stressed all to be equally distributed, guarantee the uniformity of clearance of expansion rail value.The technical basis of Here it is positive and negative dress compression control spring.
Claims (2)
1. bridge modulus formula stretching device, comprise load bearing system, displacement control system, anchor system, sealing system is formed, it is characterized in that adopting positive and negative two-way mounted in pairs on the layout of compression control spring of displacement control system, at fixed end supporting displacement case (1), movable end displacement case (13) and supporting suspension bracket A (6), arrange the compression control spring between the supporting suspension bracket B (7), on the position in gap between side bar steel (11) and the middle joist steel (3), be arranged as anti-dress compression control spring successively from left to right along crossbeam, formal dress compression control spring, anti-dress compression control spring, also but cloth apparatus is a formal dress compression control spring, anti-dress compression control spring, formal dress compression control spring, and in the both sides of crossbeam, if arranged in front is anti-dress compression control spring, the back then is arranged as formal dress compression control spring.
2. bridge modulus formula stretching device according to claim 1, it is characterized in that described central sill material adopts weathering steel to arrange the road surface, shrinkage joint, its structure is middle beam assembly (14) and middle joist steel (3) butt joint, connect with bolt by supporting hanging holder set (16), location-plate (15) is fixed by bolts on the central sill, supporting hanging holder set (16) and central sill are with the mutual positioning and fixing of bolt, central sill pressure-bearing supporting (17) is inserted on the location-plate (15), be placed on the crossbeam, central sill compresses supporting (18) and is inserted on the location-plate (15), transverse beam assembly (19) compresses supporting (18) centre in central sill pressure-bearing supporting (17) and central sill, and the side bar assembly (20) that presses together is tightened with bolt with fixed end supporting displacement case (1) and is fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202708252U CN201835226U (en) | 2010-07-26 | 2010-07-26 | Module expansion device for bridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202708252U CN201835226U (en) | 2010-07-26 | 2010-07-26 | Module expansion device for bridges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201835226U true CN201835226U (en) | 2011-05-18 |
Family
ID=44005332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202708252U Expired - Fee Related CN201835226U (en) | 2010-07-26 | 2010-07-26 | Module expansion device for bridges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201835226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452041A (en) * | 2013-10-09 | 2013-12-18 | 湖南广和桥梁构件有限公司 | Large-displacement-amount modular pattern bridge expansion device of safe deposit box system |
-
2010
- 2010-07-26 CN CN2010202708252U patent/CN201835226U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452041A (en) * | 2013-10-09 | 2013-12-18 | 湖南广和桥梁构件有限公司 | Large-displacement-amount modular pattern bridge expansion device of safe deposit box system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20140726 |
|
| EXPY | Termination of patent right or utility model |