CN2354986Y - Modulus bridge expansion device - Google Patents
Modulus bridge expansion device Download PDFInfo
- Publication number
- CN2354986Y CN2354986Y CN 98233176 CN98233176U CN2354986Y CN 2354986 Y CN2354986 Y CN 2354986Y CN 98233176 CN98233176 CN 98233176 CN 98233176 U CN98233176 U CN 98233176U CN 2354986 Y CN2354986 Y CN 2354986Y
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- China
- Prior art keywords
- crossbeam
- load
- bearing
- torsion spring
- cross beam
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- Expired - Fee Related
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- Road Paving Structures (AREA)
Abstract
The utility model relates to a modulus bridge expansion device, which comprises a pair of side transverse beams, one or more middle transverse beams which are arranged between the pair of side transverse beams, load bearing longitudinal bars which are arranged under the transverse beams, sealing rubber belts and telescopic control mechanisms for transverse beam space, wherein, the seal rubber belts and the telescopic control mechanisms for transverse beam space are arranged between each two transverse beams. The utility model is characterized in that the telescopic control mechanism for transverse beam space is composed of clamp type torsion springs which are arranged among the transverse beams; the clamp type torsion springs are fixed on desired positions via connectors which are pre-buried in the seam ends of a bridge plate and fixed on the middle transverse beams. Due to the adoption of the torsion springs to transmit and control the telescopic force, the utility model has the advantage of simple structure, low cost, reliable operation and convenient maintenance.
Description
The utility model is a kind of modulus formula bridge extension joint.
In prior art, common modulus formula bridge extension joint comprises a secondary crossbeam, one or more middle cross beam, load-bearing longitudinal and cross beam spacing extension and contraction control mechanism, wherein a secondary crossbeam and middle cross beam laterally are set in parallel in the bridge plate seam crossing along bridge plate, its case bay is 0～80 millimeter, the load-bearing longeron is axially disposed within the lower end of crossbeam along bridge plate, and case bay is 1.8 meters.Chinese patent ZL94214599 provides a kind of modulus formula bridge extension joint, it combines crossbeam spacing extension and contraction control mechanism and load-bearing longeron, on the position of spandrel girder, be provided with a kind of inclined type load-bearing control cabinet, in this control cabinet, it is a structure of reversing that crossbeam and load-bearing longeron tie-point place are provided with along the slip of load-bearing longeron with the tie-point, will horizontal torsion when inclined type load-bearing control cabinet two ends are subjected to contractility that bridge plate expands with heat and contract with cold, thereby driving each crossbeam draws back mutually or tightens translation, make the crossbeam spacing obtain adjusting thereupon, reach the purpose that the adaptation bridge plate expands with heat and contract with cold.The volume of this stretching device control cabinet is excessive, makes the device integral thickness blocked up, has strengthened the thickness of bridge plate top board, makes it exceed design load, and expense material is taken a lot of work, and structure is also comparatively complicated, cost height not only, and be difficult to maintenance.In order to overcome the shortcoming of this device, Chinese patent ZL95208721 provides a kind of modulus formula bridge extension joint.It has adopted a kind of form of structure that load-bearing longeron and crossbeam spacing extension and contraction control mechanism are separated, and its middle cross beam is bound up on the load-bearing longeron by sliding support, and is provided with the rhombus hinge between each crossbeam.When bridge plate when it axially expands with heat and contract with cold, the rhombus hinge will be stressed and deform, thus driving each middle cross beam moves along the bearing longitudinal Liangping, makes them draw back mutually or tighten, and finishes to adapt to the flexible function of bridge plate.Though this device has overcome the shortcoming of existing tilting load-bearing control case structure, the structure of its rhombus hinge is still simple inadequately, the shortcoming that has processing difficulties, cost height and be difficult to keep in repair.In addition, it needs to be noted that the maintenance of existing device all need be carried out under bridge, this is the one of the main reasons of their maintenance difficult.
The purpose of this utility model is in order to overcome the shortcoming in the prior art, the modulus formula bridge extension joint that a kind of structure is more simple, work is more reliable and easy to maintenance to be provided.
For achieving the above object, solution of the present utility model is as follows: it comprises a secondary crossbeam that is anchored at the bridge plate seam crossing, be located at one or more middle cross beam between the secondary crossbeam, be located at the load-bearing longeron of crossbeam lower end and be located at caulking gum band and crossbeam spacing extension and contraction control mechanism between each crossbeam, embedded structure or bushing type bearing or the bushing type sliding support of described one or more middle cross beam by itself and load-bearing longeron intersection is bound up on the described load-bearing longeron, described load-bearing longeron is installed in the expansion box of bridge plate seam end reservation by sliding support, its key structure is: described crossbeam spacing extension and contraction control mechanism is made of the clamping shape torsion spring that is located between each crossbeam, and described clamping shape torsion spring is fixed on the desired position by the connector that is embedded in bridge plate seam end and connect firmly on each middle cross beam.
By above-mentioned solution as can be seen, the utility model prolongs has used in the prior art form of structure that crossbeam spacing extension and contraction control mechanism and load-bearing longeron are separated, and use the rhombus hinge instead transmission and control that clamping shape torsion spring carries out the bridge plate contractility, this clamping shape torsion spring is compared with existing rhombus hinge, structure is more simple, and not fragile, thus the reliability of overall work improved, also reduced cost simultaneously.If the single-piece strain takes place, can on bridge, directly open the caulking gum band and change, make maintenance operation on bridge, carry out, thereby avoided the bridge difficulty of maintenance down.Therefore, the utility model compared with the prior art, have simple in structure, cost is low, reliable operation and advantage easy to maintenance.
Describe concrete structure of the present utility model and operating principle in detail according to embodiment below.
The structure cross-sectional schematic of Fig. 1, the utility model embodiment one.
The A-A cross-sectional view of Fig. 2, Fig. 1.
The structure cross-sectional schematic of Fig. 3, the utility model embodiment two.
The A-A cross-sectional schematic of Fig. 4, Fig. 3.
The connection schematic diagram of Fig. 5, clamping shape torsion spring and normal pin cellular type connector.
The connection schematic diagram of Fig. 6, clamping shape torsion spring and horizontal pin cellular type connector.
Referring to Fig. 1, shown in the figure is one two groups modulus formula bridge extension joints.It is made up of a secondary crossbeam (2), a middle cross beam (1), rubber seal tape (3), load-bearing longeron (4) and clamping shape torsion spring (10).A described secondary crossbeam is separately fixed at the two ends of bridge plate (6) seam by anchor bar (7), middle cross beam (1) is arranged on the centre of a secondary crossbeam, this middle cross beam is fixed on the load-bearing longeron by the embedded structure or the bushing type bearing of it and load-bearing longeron intersection, and described load-bearing longeron is installed in the expansion box of reserving at bridge plate seam two ends (9) by sliding bearing seat (5) and top board (8).Described caulking gum band (3) is embedded between limit crossbeam and the middle cross beam, plays sealing function.Described clamping shape torsion spring (10) is arranged between each crossbeam, and is fixed on the desired position by the connector (13) that is embedded in bridge plate seam end connection (11) and set in advance on each middle cross beam.When bridge plate (6) because of the weather variations in temperature when it axially expands with heat and contract with cold, will push or draw back translation to middle cross beam along load-bearing longeron (4), in this telescopic process, described torsion spring plays control action preferably to the bridge plate contractility, makes this telescopic process comparatively steady.
Referring to Fig. 2, the best mounted in pairs of described clamping shape torsion spring is in the intersection of crossbeam and load-bearing longeron, and is center line opening positioned opposite with the load-bearing longeron.Like this, can guarantee that middle cross beam slides evenly, relatively saves the torsion spring accessory again.
Referring to Fig. 5, described connector (11) can adopt vertical pin-and-hole seat formula structure (11a) with (13), and the link of described torsion spring (10) is provided with the vertical bending expansion-head (10a) of an extension, after expansion-head is inserted vertical pin-and-hole, finishes lock function by the expansion of its termination.Referring to Fig. 6, horizontal pin-and-hole seat formula structure (14) can also be adopted in described connector (11) and (13), and on horizontal pin-and-hole, be provided with fastening bolt (15), and behind the horizontal pin-and-hole of link insertion of torsion spring (10), tighten fastening bolt, can finish the fixing of torsion spring.
Referring to Fig. 3,4, shown in the figure is the modulus of group more than formula bridge extension joint.It is made up of a secondary crossbeam (2), many middle cross beams (1), rubber seal tape (3), load-bearing longeron (4) and clamping shape torsion spring (10).Wherein many middle cross beams are bound up on the load-bearing longeron (4) by the sliding support (12) of they and load-bearing longeron intersection, and are provided with described torsion spring (10) between each crossbeam, other structure and Fig. 1,2 identical.When bridge plate (6) when it axially expands with heat and contract with cold, by the transmission of torsion spring (10) to contractility, each crossbeam has been finished the Telescopic of device preferably along load-bearing longeron mutual extrusion or draw back translation equably.
Claims (3)
1, a kind of modulus formula bridge extension joint, comprise a secondary crossbeam (2) that is anchored at the bridge plate seam crossing, be located at one or more middle cross beam (1) between the secondary crossbeam, be located at the load-bearing longeron (4) of crossbeam lower end and be located at caulking gum band (3) and crossbeam spacing extension and contraction control mechanism between each crossbeam, embedded structure or bushing type bearing or the bushing type sliding support of described one or more middle cross beam (1) by itself and load-bearing longeron intersection is bound up on the described load-bearing longeron (4), described load-bearing longeron is installed in the expansion box (9) of bridge plate seam end reservation by sliding support (5), it is characterized in that: described crossbeam spacing extension and contraction control mechanism is made of the clamping shape torsion spring (10) that is located between each crossbeam, and described clamping shape torsion spring is by being embedded in bridge plate seam end and connecting firmly connector (11) on each middle cross beam, (13) be fixed on the desired position.
2, modulus formula bridge extension joint as claimed in claim 1 is characterized in that: described clamping shape torsion spring (10) mounted in pairs is in the intersection of crossbeam and load-bearing longeron, and is center line opening positioned opposite with the load-bearing longeron.
3, modulus formula bridge extension joint as claimed in claim 1 or 2, it is characterized in that: described connector (11), (13) that are embedded in bridge plate seam end and connect firmly on each middle cross beam are normal pin cellular type structure, and the link of described torsion spring (10) is provided with the vertical bending expansion-head (10a) of an extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233176 CN2354986Y (en) | 1998-11-25 | 1998-11-25 | Modulus bridge expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233176 CN2354986Y (en) | 1998-11-25 | 1998-11-25 | Modulus bridge expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2354986Y true CN2354986Y (en) | 1999-12-22 |
Family
ID=33981969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98233176 Expired - Fee Related CN2354986Y (en) | 1998-11-25 | 1998-11-25 | Modulus bridge expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2354986Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139816B (en) * | 2007-09-30 | 2010-12-08 | 中铁二院工程集团有限责任公司 | Railway ballastless track bridge girder end extending flexing device |
| CN102561515A (en) * | 2012-03-02 | 2012-07-11 | 中铁建工集团有限公司 | Sliding support capable of preventing building structures from cracking and mounting method of sliding support |
| CN104404871A (en) * | 2014-11-18 | 2015-03-11 | 刘金顶 | Treatment method for expansion joint of bridge |
| WO2021175509A1 (en) * | 2020-03-03 | 2021-09-10 | Seamus Devlin | Expansion joint cover |
| CN113373802A (en) * | 2021-06-15 | 2021-09-10 | 武汉东九永环工程技术有限公司 | Shock attenuation expansion joint based on wire rope attenuator |
-
1998
- 1998-11-25 CN CN 98233176 patent/CN2354986Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139816B (en) * | 2007-09-30 | 2010-12-08 | 中铁二院工程集团有限责任公司 | Railway ballastless track bridge girder end extending flexing device |
| CN102561515A (en) * | 2012-03-02 | 2012-07-11 | 中铁建工集团有限公司 | Sliding support capable of preventing building structures from cracking and mounting method of sliding support |
| CN104404871A (en) * | 2014-11-18 | 2015-03-11 | 刘金顶 | Treatment method for expansion joint of bridge |
| CN104404871B (en) * | 2014-11-18 | 2016-10-05 | 刘金顶 | Bridge expanssion joint Treatment Methods |
| WO2021175509A1 (en) * | 2020-03-03 | 2021-09-10 | Seamus Devlin | Expansion joint cover |
| CN113373802A (en) * | 2021-06-15 | 2021-09-10 | 武汉东九永环工程技术有限公司 | Shock attenuation expansion joint based on wire rope attenuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |