CN203782553U - Rack-type bridge expansion joint - Google Patents
Rack-type bridge expansion joint Download PDFInfo
- Publication number
- CN203782553U CN203782553U CN201420126511.3U CN201420126511U CN203782553U CN 203782553 U CN203782553 U CN 203782553U CN 201420126511 U CN201420126511 U CN 201420126511U CN 203782553 U CN203782553 U CN 203782553U
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- China
- Prior art keywords
- central sill
- type
- tooth bar
- side bar
- type central
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Abstract
The utility model discloses a rack-type bridge expansion joint which comprises racks, anchoring assemblies, displacement boxes, beams, H-shaped center sills, H-shaped boundary beams, compression springs I, bearings I, compression springs II, bearings II, sliding supports and waterproof adhesive tapes. Both ends of the beams are pre-pressed in the displacement boxes by the compression springs I and the bearings I; the sliding supports are pe-pressed on the beams by the compression springs II and the bearings II; the H-shaped boundary beams are fixed with the displacement boxes into one whole body; the H-shaped center sills are connected with the sliding supports into one whole body by bolts; the H-shaped center sills can move along sliding of the sliding supports on the beams; the racks are arranged in a staggered manner; one ends of the racks are pre-pressed on the H-shaped center sills by the bolts and the other ends of the racks are pre-pressed on the H-shaped boundary beams by the bolts. According to the utility model, the H-shaped center sills and the beams are connected in a sliding manner by the sliding supports so as to implement displacement. The novel rack-type bridge expansion joint has the advantages of stability for operation, small impacted force, low cost and strong adaptability to three-dimensional deformation capacity of a bridge.
Description
Technical field
The utility model relates to a kind of rack-and-pinion bridge extension joint, is particularly useful for concrete beam and steel box girder bridge, belongs to bridge expanssion joint technical field.
Background technology
Along with the gradually increasing of country in highway bridge field building size, Longspan Bridge is increasing.As the key member of bridge, bridge extension joint be except meeting flexible that bridge superstructure variations in temperature causes, also will meet the needs of the beam-ends three-D displacement motion that perseverance, mobile load cause.Meanwhile, the reliability that existing " heavy duty, high density " traffic is used bridge extension joint has proposed very high requirement.
At present, bridge extension joint has two types: modular expansion device and comb-tooth-type stretching device have technical characterstic separately on 26S Proteasome Structure and Function.
Modular expansion device adaptation bridge 3 D deformation ability is strong, structure is ripe; But vehicle operating comfortableness is poor, the power that is hit is large, is subject to certain impact application life.
The vehicle operating of comb-tooth-type stretching device is steady, the power that is hit is little; But the 3 D deformation ability that adapts to bridge is poor, long term can cause the fracture of broach and the destruction of anchor system, badly influences traffic safety.
Utility model content
The purpose of this utility model is: provide a kind of and operate steadily, be hit that power is little, cost is low, adapt to the strong rack-and-pinion bridge extension joint of bridge 3 D deformation ability, solve the technical problem of existing bridge extension joint.
The utility model object realizes by following technical proposals: a kind of rack-and-pinion bridge extension joint, comprise tooth bar, anchoring assembly, displacement case and crossbeam, described displacement case is anchored in the beam-ends of bridge by mixed earth cast, it is characterized in that: also comprise H type central sill, H type side bar, stage clip I, supporting I, stage clip II, supporting II, travelling carriage and waterproof adhesive tape; The inner chamber of displacement case is established stage clip I and supporting I, and the two ends of described crossbeam are by stage clip I and support I precompressed in displacement case; Described H type side bar and displacement case are fixed as one; Described travelling carriage inner chamber is established supporting II and stage clip II, by adjusting bolt, regulates the precompression between travelling carriage and crossbeam, and described travelling carriage is pressed on crossbeam in advance by supporting II and stage clip II, and can on crossbeam, endwisely slip; Described H type central sill and travelling carriage are bolted and are integrated, and H type central sill can slide along with travelling carriage on crossbeam; Described tooth bar is staggered, and one end of tooth bar is pressed on H type central sill in advance by bolt, and the other end is pressed on H type side bar in advance by bolt.
As a kind of optimal way, described pressure-bearing pad is located at bottom and the bearing top of tooth bar, and clamping pad is located at the top of tooth bar, and described tooth bar is pressed in clamping pad on pressure-bearing pad in advance by bolt.
As further preferred embodiment, described bearing is several, equidistant being welded on H type side bar, and equidistant being welded on H type central sill.
As further preferred embodiment, also comprise fixed head, described waterproof adhesive tape is flush-mounted between H type central sill and H type side bar by fixed head.
As further preferred embodiment, at the top of bolt, be also provided with dust cap.
As further preferred embodiment, described tooth bar is divided into tooth bar I and tooth bar II, H type central sill is divided into H type central sill I and H type central sill II, H type side bar is divided into H type side bar I and H type side bar II, and one end of tooth bar I is connected with H type central sill I, and the other end is connected with H type side bar I, one end of tooth bar II is connected with H type central sill II, the other end is connected with H type side bar II, and H type central sill II is between H type side bar I and H type central sill I, and H type central sill I is between H type central sill II and H type side bar II.
As a kind of optimal way, described stage clip I, supporting I, supporting II and stage clip II, be the tetrafluoro plate composition that surface scribbles silicone grease.
The acting as of part component in the utility model:
Tooth bar: complete the flexible and steadily effect of stand under load.
H type central sill: the direction across bridge of stationary rack distributes and slidably.
H type side bar: the direction across bridge of stationary rack distributes and is fixed as one with displacement case and anchoring assembly.
Anchoring assembly: stretching device is anchored on mixed earth bridge reliably.
Stage clip I and supporting I: crossbeam relative displacement case is slided, and flexible material gives the function that precompressed can complete Three dimensional rotation and damping noise reduction.
Stage clip II and supporting II: H type central sill is slided on crossbeam by travelling carriage, and flexible material gives the function that precompressed can complete Three dimensional rotation and damping noise reduction.
Clamping pad and pressure-bearing pad: make tooth bar can complete the function of appropriate Three dimensional rotation and secondary shock-absorbing noise reduction.
Travelling carriage: fixedly stage clip and supporting, completes and rotate and slip effect.
Adjust bolt: regulate the precompression of stage clip, make precompression adjustable.
Waterproof adhesive tape: prevent rainwater and the dust corrosiveness to elastomeric bearing and bolt connection piece.
Dust cap: prevent rainwater and the dust corrosiveness to bolt connection piece.
The Telescopic of this rack-and-pinion bridge extension joint is to be staggered by tooth bar, be connected on H type side bar and H type central sill, H type side bar and displacement case are welded as a whole, and H type central sill and travelling carriage are integrally connected, and two displacement casees can complete the telescopic action of bridge with respect to the slip of crossbeam.In addition, the link position of crossbeam and tooth bar is all provided with the elastomeric material flexibly connecting, and can adapt to the appropriate three-dimensional motion of bridge.
In addition, adopted a large amount of supportings, stage clip, pressure-bearing pad and clamping pad, and made for elastomeric material, and be designed with precompression, made vehicle operating comfortableness good, the power that is hit is little, also plays the effect of damping noise reduction.
Meanwhile, this rack-and-pinion bridge extension joint is provided with waterproof adhesive tape and dust cap, prevents rainwater and the dust corrosiveness to stage clip, supporting and bolt connection piece.
This rack-and-pinion bridge extension joint be take tooth bar as unit, and two tooth bars of interlaced arrangement are with respect to becoming one group, and between unit, function and structure are relatively independent, for installation, maintenance, change very convenient.
Compared with prior art, the beneficial effects of the utility model: the utility model combines comb-tooth-type stretching device and modular expansion device, possess that vehicle operating is comfortable, the power that is hit is little, cost is low, adapt to the strong advantage of bridge 3 D deformation ability.
Accompanying drawing explanation
Fig. 1 is the top view of the utility model bridge extension joint;
Fig. 2 is the front view of the utility model bridge extension joint;
Fig. 3 is the B-B sectional view in the utility model bridge extension joint Fig. 1;
Fig. 4 is the A place partial enlarged view in the utility model bridge extension joint Fig. 3;
Fig. 5 is the part schematic perspective view of the utility model bridge extension joint.
Wherein: 1-tooth bar; 2-H type central sill; 3-H type side bar; 4-anchoring assembly; 5-stage clip I; 6-displacement case; 7-crossbeam; 8-supports I; 9-supports II; 10-stage clip II; 11-travelling carriage;
12-adjusts bolt; 13-waterproof adhesive tape; 14-dust cap; 15-clamping pad; 16-pressure-bearing pad;
17-bearing; 18-bolt; 19-fixed head, 101-tooth bar I; 102-tooth bar II; 201-H type central sill I; 202-H type central sill II; 301-H type side bar I; 302-H type side bar II.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Disclosed all features in this manual, or the step in disclosed all methods or process, except the speciality and/or step of mutual repulsion, all can combine by any way, unless narration especially, all can be replaced by other equivalences or the alternative features with similar object,, unless narration especially, an embodiment in a series of equivalences of each feature or similar characteristics.
Embodiment
As Figure 1-5, a kind of rack-and-pinion bridge extension joint, comprises tooth bar 1, H type central sill 2, H type side bar 3, displacement case 6, crossbeam 7, stage clip I 5, supporting I 8, stage clip II 10, supporting II 9, travelling carriage 11, waterproof adhesive tape 13 and bolt 18; Its concrete structure is as follows:
Displacement case 6 is anchored in the beam-ends of bridge by pouring concrete, play fixing stretching device and be connected to the effect at bridge expanssion joint place.
The inner chamber of displacement case 6 is established stage clip I 5 and supporting I 8, and the two ends of described crossbeam 7 are by stage clip I 5 and support I 8 precompressed in displacement case 6; Described H type side bar 3 is fixed as one with displacement case 6; Like this can H type side bar 3 is fixing, prevent its slippage.
Described travelling carriage 11 inner chambers are established supporting II 9 and stage clip II 10, the precompression regulating between travelling carriage 11 and crossbeam 7 by adjusting bolt 12, and described travelling carriage 11 is pressed on crossbeam 7 in advance by supporting II 9 and stage clip II 10, and can on crossbeam 7, endwisely slip; Described H type central sill 2 is bolted and is integrated with travelling carriage 11, and H type central sill 2 can slide along with travelling carriage 11 on crossbeam 7; H type central sill 2 can move, and only can moving axially along crossbeam 7.
Described tooth bar 1 is staggered, one end of tooth bar 1 is pressed on H type central sill 2 in advance by bolt 18, the other end is pressed on H type side bar 3 in advance by bolt 18, because H type side bar 3 is fixing not movable structure, and H type central sill 2 is removable frame, therefore, tooth bar affords the deformation under load that vehicle gives, and just can eliminate by movement and the elastomeric bearing of H type central sill 2.
Described pressure-bearing pad 16 is located at bottom and bearing 17 tops of tooth bar 1, and clamping pad 15 is located at the top of tooth bar 1, and described tooth bar 1 is pressed in clamping pad 15 on pressure-bearing pad 16 in advance by bolt 18.Described bearing 17 is several, equidistant being welded on H type side bar 3, and equidistant being welded on H type central sill 2; Also comprise fixed head 19, described waterproof adhesive tape 13 is flush-mounted between H type central sill 2 and H type side bar 3 by fixed head 19.
Described stage clip I 5, supporting I 8, supporting II 9 and stage clip II 10, be the tetrafluoro plate composition that surface scribbles silicone grease.
In order further to understand this structure, as shown in Figure 5, described tooth bar 1 is divided into tooth bar I 101 and tooth bar II 102, H type central sill 2 is divided into H type central sill I 201 and H type central sill II 202, H type side bar 3 is divided into H type side bar I 301 and H type side bar II 302, one end of tooth bar I 101 is connected with H type central sill I 201, the other end is connected with H type side bar I 301, one end of tooth bar II 102 is connected with H type central sill II 202, the other end is connected with H type side bar II 302, and H type central sill II 202 is between H type side bar I 301 and H type central sill I 201, H type central sill I 201 is between H type central sill II 202 and H type side bar II 302.
Being staggered of tooth bar, forms continuous bearing surface along bridge, while making whole vehicle through this stretching device, operates steadily, and the power that is hit is little; This rack-and-pinion bridge extension joint is compared with comb-tooth-type stretching device with modulus type, simple in structure, raw material consumption is few, cost is lower, and when stroke is larger, cost is relatively lower; The key position of this structure and rotation place adopt a large amount of sinking supports, can well adapt to the three-dimensional motion of bridge.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. a rack-and-pinion bridge extension joint, comprise tooth bar (1), anchoring assembly (4), pressure-bearing pad (16), displacement case (6) and crossbeam (7), described displacement case (6) is anchored in the beam-ends of bridge by pouring concrete, it is characterized in that: also comprise H type central sill (2), H type side bar (3), stage clip I (5), supporting I (8), stage clip II (10), supporting II (9), travelling carriage (11) and waterproof adhesive tape (13); The inner chamber of displacement case (6) is established stage clip I (5) and supporting I (8), and the two ends of described crossbeam (7) are by stage clip I (5) and support I (8) precompressed in displacement case (6); Described H type side bar (3) is fixed as one with displacement case (6); Described travelling carriage (11) inner chamber is established supporting II (9) and stage clip II (10), by adjusting bolt (12), regulate the precompression between travelling carriage (11) and crossbeam (7), it is upper that described travelling carriage (11) is pressed in crossbeam (7) in advance by supporting II (9) and stage clip II (10), and can on crossbeam (7), endwisely slip; Described H type central sill (2) is bolted and is integrated with travelling carriage (11), and H type central sill (2) can be along with travelling carriage (11) be in the upper slip of crossbeam (7); Described tooth bar (1) is staggered, and it is upper that one end of tooth bar (1) is pressed on H type central sill (2) in advance by bolt (18), and the other end is pressed on H type side bar (3) in advance by bolt (18).
2. rack-and-pinion bridge extension joint as claimed in claim 1, it is characterized in that: described pressure-bearing pad (16) is located at bottom and bearing (17) top of tooth bar (1), clamping pad (15) is located at the top of tooth bar (1), and described tooth bar (1) is pressed on bearing (17) in advance by bolt (18), clamping pad (15), pressure-bearing pad (16).
3. rack-and-pinion bridge extension joint as claimed in claim 2, is characterized in that: described bearing (17) is several equidistant being welded on H type side bar (3), and equidistant being welded on H type central sill (2).
4. rack-and-pinion bridge extension joint as claimed in claim 2, is characterized in that: also comprise fixed head (19), described waterproof adhesive tape (13) is flush-mounted between H type central sill (2) and H type side bar (3) by fixed head (19).
5. rack-and-pinion bridge extension joint as claimed in claim 2, is characterized in that: at the top of bolt (18), be also provided with dust cap (14).
6. as the rack-and-pinion bridge extension joint as described in arbitrary in claim 1-5, it is characterized in that: described tooth bar (1) is divided into tooth bar I (101) and tooth bar II (102), H type central sill (2) is divided into H type central sill I (201) and H type central sill II (202), H type side bar (3) is divided into H type side bar I (301) and H type side bar II (302), one end of tooth bar I (101) is connected with H type central sill I (201), the other end is connected with H type side bar I (301), one end of tooth bar II (102) is connected with H type central sill II (202), the other end is connected with H type side bar II (302), and H type central sill II (202) is positioned between H type side bar I (301) and H type central sill I (201), H type central sill I (201) is positioned between H type central sill II (202) and H type side bar II (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126511.3U CN203782553U (en) | 2014-03-20 | 2014-03-20 | Rack-type bridge expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126511.3U CN203782553U (en) | 2014-03-20 | 2014-03-20 | Rack-type bridge expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203782553U true CN203782553U (en) | 2014-08-20 |
Family
ID=51318756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420126511.3U Withdrawn - After Issue CN203782553U (en) | 2014-03-20 | 2014-03-20 | Rack-type bridge expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203782553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850179A (en) * | 2014-03-20 | 2014-06-11 | 成都市新筑路桥机械股份有限公司 | Rack type bridge expansion device |
-
2014
- 2014-03-20 CN CN201420126511.3U patent/CN203782553U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850179A (en) * | 2014-03-20 | 2014-06-11 | 成都市新筑路桥机械股份有限公司 | Rack type bridge expansion device |
| CN103850179B (en) * | 2014-03-20 | 2015-09-30 | 成都市新筑路桥机械股份有限公司 | Rack-and-pinion bridge extension joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140820 Effective date of abandoning: 20150930 |
|
| RGAV | Abandon patent right to avoid regrant |