CN103243645A - Sliding support for bridge extension device - Google Patents
Sliding support for bridge extension device Download PDFInfo
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- CN103243645A CN103243645A CN2013101878610A CN201310187861A CN103243645A CN 103243645 A CN103243645 A CN 103243645A CN 2013101878610 A CN2013101878610 A CN 2013101878610A CN 201310187861 A CN201310187861 A CN 201310187861A CN 103243645 A CN103243645 A CN 103243645A
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- constraint steel
- sliding bearing
- steel loop
- slide plate
- elastic body
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Abstract
The invention belongs to the field of bridge engineering extension devices and mainly relates to a sliding support for a bridge extension device. The sliding support for the bridge extension device comprises a sliding plate (1), an elastomer (4) and a constraint steel ring (2). The lower portion of the sliding plate is embedded in a connecting groove (5) which the upper end face of the constraint steel ring is provided with, and the constraint steel ring (2) is matched with a groove positioned on the upper end face of the elastomer (4) through a protrusion (6) positioned on the lower end face and is integrally connected with the groove. An annular boss (7) positioned on the excircle surface of the constraint steel ring and a gap reserved between the upper end faces of the elastomer form an annular seal groove, and a seal ring (3) is embedded in the annular seal groove and is wrapped on the annular boss (7) positioned on the excircle surface of the constraint steel ring. Through the sliding support, the problem that dust enters the sliding friction surface so that lubricating grease is polluted and deteriorates can be effectively solved, premature abrasion of the pressure-bearing support sliding plate is avoided, and service life of the pressure-bearing support is prolonged.
Description
Technical field
The invention belongs to bridge engineering stretching device field, relate generally to a kind of bridge extension joint sliding bearing.
Background technology
The modulus formula stretching device of bridge use in the market, its structure mainly contain several parts such as central sill, crossbeam, displacement case, sliding bearing, displacement control system, rubber weather strip and anchor system and form.Crossbeam and central sill by welding or bolt is connected and with sliding bearing formation planar friction pair.Crossbeam will pass to sliding bearing from the load of central sill, and then pass to displacement case and beam body., and then drive whole stretching device and move to adapt to the beam displacement body because variations in temperature, wind factor such as carry when causing the beam-ends displacement, drives the central sill motion by the stretching device crossbeam when bridge.In this process, crossbeam and its top and the bottom sliding bearing form the planar friction pair, with operative constraint and the carrying that crossbeam is provided, and reduce the system friction resistance.In actual use, sliding bearing is as the part of modulus formula stretching device, be in the open natural environment throughout the year, applying working condition is comparatively abominable, pile up full dust in short time between crossbeam and the sliding bearing rubbing surface, when the beam body moved, the relative motion between crossbeam and the sliding bearing was brought dust in its sliding friction surface into again, caused the sliding bearing applying working condition further to worsen.Use sliding bearing usually to adopt pure tetrafluoroethene and rubber in the market or polyurethane matrix is bonding is made, after dust accumulation on the rubbing surface between sliding bearing and the crossbeam, pure tetrafluoroethene wearing and tearing aggravation on the sliding bearing, the sliding bearing height reduces in short time, and then cause its pretightning force to crossbeam to be lost gradually, can't retrain crossbeam.Under the vehicle effect, crossbeam will make displacement control system destroy from landing on the sliding bearing, and middle beam stress sharply worsens fracture, and then further causes whole modulus formula stretching device thrashing, needs after the inefficacy whole stretching device is changed.
Summary of the invention
For solving the problems of the technologies described above, the objective of the invention is to propose a kind of bridge extension joint sliding bearing.
The present invention adopts following technical scheme for finishing above-mentioned purpose:
A kind of bridge extension joint sliding bearing, described sliding bearing include slide plate, elastic body and constraint steel loop; Described slide plate is cylinder, and the constraint steel loop is set between described slide plate and the elastic body; Described constraint steel loop upper surface has the circular link slot that is connected in order to described slide plate, and described slide plate bottom is embedded in the link slot that constraint steel loop upper surface has; Described constraint steel loop lower surface has in order to the annular with described elastomer-bonded protrudes; Described elastic body upper surface has toroidal cavity; Described constraint steel loop is by the protrusion of lower surface and the groove fit of elastic body upper surface, and the connection one; Described constraint steel loop periphery has annular boss, the gap looping seal groove that has between described annular boss and the described elastomeric upper surface, in described annular seal groove, set sealing ring, described sealing ring also is coated on the annular boss that constraint steel loop periphery has, and constitutes the hermetically-sealed construction of sliding bearing.
Described slide plate upper surface is evenly equipped with in order to store the pit of lubricating grease.
Described sealing ring material can be a kind of of polyurethane, modified ultra-high molecular weight polyethylene, polytetrafluoroethylene (PTFE), nylon, rubber.
Described slide plate material can be modified ultra-high molecular weight polyethylene or polytetrafluoroethylene (PTFE) or filled polytetrafluoroethylene.
Described elastic body material can be rubber or polyurethane.
A kind of bridge extension joint sliding bearing that the present invention proposes, have make simple, anti-wear performance is good, be easy to advantage such as replacings, efficiently solve and have modulus formula stretching device needs integral replacing sliding bearing even whole stretching device after tetrafluoroethene has worn and torn on the sliding bearing a difficult problem now.The constraint steel loop is set between slide plate and elastic body, and coats removable sealing ring, prevent that effectively dust from entering sliding friction surface and causing grease contaminated rotten, avoid the pressure-bearing supporting plate to wear and tear too early, prolong pressure-bearing and support application life.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of A part among Fig. 1.
Fig. 3 is the schematic diagram of constraint steel loop among the present invention.
Fig. 4 is the vertical view of constraint steel loop among the present invention.
Fig. 5 is the schematic diagram of sealing ring among the present invention.
Fig. 6 is the vertical view of sealing ring among the present invention.
Among the figure, 1, slide plate, 2, the constraint steel loop, 3, sealing ring, 4, elastic body, 5, link slot, 6, protrude, 7, annular boss.
The specific embodiment:
With specific embodiment the present invention is illustrated by reference to the accompanying drawings:
As shown in Figure 1, a kind of bridge extension joint sliding bearing, described sliding bearing include slide plate 1, elastic body 4 and constraint steel loop 2; Described slide plate 1 is cylinder, is provided with constraint steel loop 2 between described slide plate 1 and elastic body 4; In conjunction with Fig. 2, described constraint steel loop 2 upper surfaces have the link slot 5 that is connected in order to cylinder slide plate 1, link slot 5 is joined with cylinder slide plate 1 kissing, and described slide plate 1 bottom is embedded in the link slot 5 that constraint steel loop 2 upper surfaces have, and described link slot 5 is circular trough; Described constraint steel loop 2 lower surfaces have protrudes 6, and described protrusion 6 is annular; Described elastic body 4 upper surfaces have groove, and described groove is annular; Described constraint steel loop 2 cooperates with the toroidal cavity that the elastic body upper surface has by the annular protrusion 6 that the lower surface has, and by bonding connection one; Described constraint steel loop 2 peripheries have annular boss 7, the gap looping seal groove that has between the upper surface of described annular boss 7 and described elastic body 4, with reference to Fig. 3, in described annular seal groove, set sealing ring 3, described sealing ring 3 also is coated on the annular boss 7 that constraint steel loop periphery has, and constitutes the hermetically-sealed construction of sliding bearing.
The upper surface of described slide plate 1 is evenly equipped with in order to store the pit of lubricating grease.
Described slide plate 1 material can be modified ultra-high molecular weight polyethylene, polytetrafluoroethylene (PTFE) or filled polytetrafluoroethylene.
Described sealing ring 3 materials can be a kind of of polyurethane, modified ultra-high molecular weight polyethylene, polytetrafluoroethylene (PTFE), nylon, rubber.
Described elastic body 4 materials can be rubber, polyurethane, and shape can be square, cylinder or cuboid.
Claims (6)
1. bridge extension joint sliding bearing is characterized in that: described sliding bearing includes slide plate (1), elastic body (4) and constraint steel loop (2); Described slide plate (1) is cylinder, and constraint steel loop (2) is set between described slide plate (1) and the elastic body (4); Described constraint steel loop (2) upper surface has in order to the circular link slot (5) that is connected with described slide plate, and described slide plate bottom is embedded in the link slot (5) that constraint steel loop upper surface has; Described constraint steel loop (2) lower surface has in order to the annular with described elastic body (4) combination protrudes (6); Described elastic body (4) upper surface has toroidal cavity; Described constraint steel loop (2) is by the protrusion (6) of lower surface and the groove fit of elastic body (4) upper surface, and the connection one; Described constraint steel loop periphery has annular boss (7), the gap looping seal groove that has between described annular boss (7) and the described elastomeric upper surface, in described annular seal groove, set sealing ring (3), described sealing ring (3) also is coated on the annular boss (7) that constraint steel loop periphery has, and constitutes the hermetically-sealed construction of sliding bearing.
2. according to the described a kind of bridge extension joint sliding bearing of claim 1, it is characterized in that: the upper surface of described slide plate (1) is evenly equipped with in order to store the pit of lubricating grease.
3. according to the described a kind of bridge extension joint sliding bearing of claim 1, it is characterized in that: described sealing ring (3) material is a kind of of polyurethane, modified ultra-high molecular weight polyethylene, polytetrafluoroethylene (PTFE), nylon, rubber.
4. according to the described a kind of bridge extension joint sliding bearing of claim 1, it is characterized in that: described slide plate (1) material is modified ultra-high molecular weight polyethylene or polytetrafluoroethylene (PTFE) or filled polytetrafluoroethylene.
5. according to the described a kind of bridge extension joint sliding bearing of claim 1, it is characterized in that: described elastic body (4) is cylinder or cuboid.
6. according to the described a kind of bridge extension joint sliding bearing of claim 1, it is characterized in that: described elastic body (4) material is rubber or polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101878610A CN103243645A (en) | 2013-05-21 | 2013-05-21 | Sliding support for bridge extension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101878610A CN103243645A (en) | 2013-05-21 | 2013-05-21 | Sliding support for bridge extension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103243645A true CN103243645A (en) | 2013-08-14 |
Family
ID=48923497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101878610A Pending CN103243645A (en) | 2013-05-21 | 2013-05-21 | Sliding support for bridge extension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103243645A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3854159A (en) * | 1973-09-24 | 1974-12-17 | Acme Highway Prod | Composite expansion joint assembly |
| CN2293588Y (en) * | 1996-04-11 | 1998-10-07 | 张玉恒 | Expanding apparatus for expansion joint of bridge deck |
| JPH1181239A (en) * | 1997-09-08 | 1999-03-26 | Kinki Univ | Road bridge |
| JP2007063843A (en) * | 2005-08-31 | 2007-03-15 | Nitta Ind Corp | Elastic bearing body for structure |
| CN200961237Y (en) * | 2006-11-03 | 2007-10-17 | 成都市新筑路桥机械股份有限公司 | Module type profiled bar telescoping device |
| CN201459600U (en) * | 2009-06-02 | 2010-05-12 | 李连秀 | Slope-shaped ring pot type rubber bearing |
| CN202047363U (en) * | 2011-03-28 | 2011-11-23 | 重庆信合塑胶有限公司 | Pressure-bearing support |
| CN202323696U (en) * | 2011-11-17 | 2012-07-11 | 重庆信合塑胶有限公司 | Pressure-bearing support |
| CN202492798U (en) * | 2012-04-14 | 2012-10-17 | 李洪坡 | Special pressure-bearing support seat for multidirectional displacement modulus-type stretching device |
| CN203451991U (en) * | 2013-05-21 | 2014-02-26 | 洛阳双瑞特种装备有限公司 | Slide bearing for bridge expansion device |
-
2013
- 2013-05-21 CN CN2013101878610A patent/CN103243645A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3854159A (en) * | 1973-09-24 | 1974-12-17 | Acme Highway Prod | Composite expansion joint assembly |
| CN2293588Y (en) * | 1996-04-11 | 1998-10-07 | 张玉恒 | Expanding apparatus for expansion joint of bridge deck |
| JPH1181239A (en) * | 1997-09-08 | 1999-03-26 | Kinki Univ | Road bridge |
| JP2007063843A (en) * | 2005-08-31 | 2007-03-15 | Nitta Ind Corp | Elastic bearing body for structure |
| CN200961237Y (en) * | 2006-11-03 | 2007-10-17 | 成都市新筑路桥机械股份有限公司 | Module type profiled bar telescoping device |
| CN201459600U (en) * | 2009-06-02 | 2010-05-12 | 李连秀 | Slope-shaped ring pot type rubber bearing |
| CN202047363U (en) * | 2011-03-28 | 2011-11-23 | 重庆信合塑胶有限公司 | Pressure-bearing support |
| CN202323696U (en) * | 2011-11-17 | 2012-07-11 | 重庆信合塑胶有限公司 | Pressure-bearing support |
| CN202492798U (en) * | 2012-04-14 | 2012-10-17 | 李洪坡 | Special pressure-bearing support seat for multidirectional displacement modulus-type stretching device |
| CN203451991U (en) * | 2013-05-21 | 2014-02-26 | 洛阳双瑞特种装备有限公司 | Slide bearing for bridge expansion device |
Non-Patent Citations (1)
| Title |
|---|
| 王成伟: "数支承式伸缩装置在高等级公路中的应用", 《公路运输文摘》 * |
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| PB01 | Publication | ||
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130814 |