CN107165044B - Large-displacement sidewalk telescopic device - Google Patents
Large-displacement sidewalk telescopic device Download PDFInfo
- Publication number
- CN107165044B CN107165044B CN201710436956.XA CN201710436956A CN107165044B CN 107165044 B CN107165044 B CN 107165044B CN 201710436956 A CN201710436956 A CN 201710436956A CN 107165044 B CN107165044 B CN 107165044B
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- Prior art keywords
- displacement
- pavement
- middle supporting
- plate
- side cover
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/065—Joints having sliding plates
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a large-displacement sidewalk telescopic device, which is characterized in that: the device is along horizontal bridge to equally dividing into a plurality of flexible unit, every flexible unit includes two displacement casees, two limit apron, a supporting beam and a interlude, two the displacement casees is hollow structure, corresponds respectively and pre-buries in expansion joint position department both sides beam end concrete, the both ends of supporting beam stretch into respectively and install in two displacement casees of corresponding pre-buried installation, interlude board horizontal installation is in supporting beam top, two the limit apron is installed respectively in expansion joint position department both sides and the one end and the beam end concrete fixed connection of limit apron, and the other end overlap joint is placed on the interlude board one end. Due to the supporting effect of the middle supporting plate, the thickness of the side cover plate can be reduced to 5mm, so that the step height difference of the device at the pavement part is only 5mm at most, the step is hardly felt when people walk, and the comfort and the safety are greatly improved.
Description
Technical Field
The invention relates to the technical field of bridge expansion devices, in particular to a large-displacement sidewalk expansion device which is suitable for a bridge sidewalk expansion joint.
Background
The bridge pavement is often higher than the roadway and is provided with guardrail safety facilities so that the outline line shape of the cross section of the bridge pavement is complex. If the telescopic device of the pavement is adopted, the telescopic device is difficult to adapt to the complex outline shape of the pavement, the cost is high, the construction is complex, and the pavement has much smaller load than the pavement and has no impact effect, so that the telescopic device of the pavement can not be fully utilized, and the resource waste is serious.
The existing pavement joint is simple in structure and is formed by overlapping two steel plates. However, when the displacement of the expansion joint of the pavement is large, the thickness of the steel plate needs to be increased, so that a step is formed on the pavement by the steel plate, the step height difference is at least 20mm, pedestrians are easy to stumble when walking, and potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a large-displacement sidewalk telescopic device, and the thickness of a side cover plate can be reduced to 5mm due to the supporting function of a middle supporting plate, so that the step height difference of the device at a pavement part is only 5mm at most, a person can hardly feel steps when walking, and the comfort and the safety are greatly improved.
The technical scheme adopted by the invention is as follows:
the utility model provides a large displacement pavement telescoping device which characterized in that: the device is to equally divide into a plurality of flexible unit along the horizontal bridge, every flexible unit includes two displacement casees, two limit apron, a supporting beam and an intermediate support board, two the displacement casees are hollow structure, correspond respectively and pre-buried in expansion joint position department both sides beam end concrete, the both ends of supporting beam stretch into respectively and install in two displacement casees that correspond pre-buried installation, intermediate support board horizontal installation is in supporting beam top and be located expansion joint intermediate position department, two the limit apron is installed respectively in expansion joint position department both sides and the one end and beam end concrete fixed connection of limit apron, and the other end overlap joint is placed on intermediate support board one end.
Further, two longitudinal beams are arranged in parallel in the transverse bridge direction and are connected with supporting beams of a plurality of telescopic units in the device, two bases are arranged on the lower surface of the middle supporting plate in parallel in the longitudinal bridge direction, two ends of the lower portion of each base are respectively fixed with the two longitudinal beams, the two longitudinal beams and a plurality of middle supporting plates arranged on the longitudinal beams form a whole, the upper surface positions of the middle supporting plates are lower than the pavement or flush, the longitudinal beams and the middle supporting plates form the whole synchronous motion, and the upper surface positions of the middle supporting plates are lower than the pavement or flush so that the thickness of the side cover plates can be reduced.
Further, the end part of the support beam is movably connected with the displacement box, and the end part of the support beam can freely stretch and retract in the displacement box along the length direction of the support beam.
Further, the supporting beam is cylindrical, and the whole supporting beam can rotate, namely, when the bridge is displaced, the supporting beam can rotate for a certain angle.
Further, the device also comprises a plurality of displacement controllers, and the displacement controllers are horizontally arranged below the telescopic unit at intervals.
Further, the longitudinal beam can slide along the length direction of the supporting beam, and the position of the whole body formed by the longitudinal beam and the middle supporting plate can be adjusted.
Further, the displacement controller is formed by hinging two long arms and four short arms to form two parallelogram structures connected together, hinge points A at two ends of the displacement controller are respectively connected with beam end concrete at two sides of the expansion joint position by adopting a connecting piece, hinge points B at the central position of the displacement controller are connected with a middle supporting plate corresponding to the middle supporting plate by adopting a connecting piece, connection points of the middle supporting plate and the hinge points B are positioned on the transverse central line of the middle supporting plate, the rest hinge points C of the displacement controller are in a free state, when the expansion joint changes, namely, the concrete at two ends of the two sides is displaced, the parallelogram structures change along with the change, and the hinge points B are always positioned at the central positions of the two parallelogram structures, so that the middle supporting plate is always positioned at the middle positions of the beam ends of the two sides and forms a good middle supporting point on the edge cover plate.
Further, one end both sides in the side cover plate overlap joint intermediate support board are equipped with the recess respectively, intermediate support board plug-in mounting is in the recess, can hold the intermediate support board tightly, prevents to rise to warp in the use, improves the security.
Further, the side cover plate adopts a stainless steel pattern plate and has an anti-skid function.
Further, the part of the displacement box, which is contacted with the side wall of the supporting beam, is provided with a wear-resistant part, so that the vibration reduction and wear resistance effects are achieved.
The beneficial effects of the invention are as follows:
the telescopic device provided by the invention consists of the displacement box, the side cover plate, the supporting beam, the middle supporting plate and the displacement controller, and the component parts are simple and easy to obtain, and the manufacturing cost and the installation cost are low. Because the supporting effect of middle backup pad and middle backup pad upper surface position are less than the pavement of pavement or flush, and the thickness of limit cover plate can reduce to 5mm, consequently the device has 5mm at most in the step height of pavement part, almost does not feel the step when people walk, and travelling comfort and security improve greatly.
Drawings
Fig. 1 is a schematic view of a prior art pavement joint.
Fig. 2 is a schematic structural view of the present invention.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a schematic bottom view of the present invention (side cover panels not shown).
Fig. 5 is an enlarged schematic view of a portion at M in fig. 2.
Fig. 6 is a schematic diagram of the displacement controller of fig. 2.
Fig. 7 is a schematic view of the cross-sectional structure of fig. 2 in the N-N direction.
Fig. 8 is a schematic operation diagram in the expansion joint displacement enlarged state.
FIG. 9 is a schematic diagram showing the operation of the expansion joint in a state of small displacement
Detailed Description
In order to make the objects and advantages of the technical solution more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the conventional pavement joint has a very simple structure and is formed by overlapping two steel plates 9. However, when the displacement of the expansion joint of the sidewalk is large, the thickness of the steel plate 9 also needs to be increased, so that a step is formed on the pavement by the steel plate 9, pedestrians are easy to trip over when walking, and potential safety hazards exist.
As shown in fig. 2-9, a large-displacement sidewalk expansion device is equally divided into a plurality of expansion units along a transverse bridge, each expansion unit comprises two displacement boxes 1, two side cover plates 2, a support beam 3 and an intermediate support plate 4, the two displacement boxes 1 are hollow structures and respectively correspond to and are embedded in beam end concrete at two sides of an expansion joint position, two ends of the support beam 3 are respectively installed in the two displacement boxes 1 corresponding to and embedded in an embedded manner, the intermediate support plate 4 is horizontally installed above the support beam 3, the two side cover plates 2 are respectively installed at two sides of the expansion joint position and one end of the side cover plates 2 is fixedly connected with the beam end concrete, and the other end of the side cover plates is placed at one end of the intermediate support plate 4 in an overlapping manner.
Two longitudinal beams 5 are arranged in parallel in the transverse bridge direction, the longitudinal beams 5 are connected with the supporting beams 3 of a plurality of telescopic units in the device, two bases 6 are arranged on the lower surface of the middle supporting plate 4 in parallel along the bridge direction, two ends of the lower portion of each base 6 are respectively fixed with the two longitudinal beams 5, the two longitudinal beams 5 and a plurality of middle supporting plates 4 arranged on the longitudinal beams 5 form a whole, and the upper surface positions of the middle supporting plates 4 are lower than or flush with the pavement of the pavement.
The end part of the supporting beam 3 is movably connected with the displacement box 1, and the end part of the supporting beam 3 can freely stretch and retract in the displacement box 1 along the length direction.
The support beam 3 is cylindrical and integrally rotatable.
The device also comprises a plurality of displacement controllers 7, and the displacement controllers 7 are horizontally arranged below the telescopic unit at intervals.
The stringers 5 are slidable along the length of the support beams 3.
The displacement controller 7 is formed by hinging two long arms 7-1 and four short arms 7-2 to form two parallelogram structures connected together, hinge points A7-3 at two ends of the displacement controller 7 are respectively connected with beam end concrete at two sides of the expansion joint position by adopting a connecting piece, a hinge point B7-4 at the central position of the displacement controller 7 is connected with a middle supporting plate 4 corresponding to the middle supporting plate 4 above the connecting piece by adopting the connecting piece, the connecting point of the middle supporting plate 4 and the hinge point B7-4 is positioned on the transverse bridge center line of the middle supporting plate 4, and the rest hinge points C7-5 of the displacement controller 7 are in a free state.
The side cover plate 2 is lapped on two sides of one end of the middle supporting plate 4 and is respectively provided with a groove 2-1, and the middle supporting plate 4 is installed in the grooves 2-1 in an inserting mode.
The side cover plate 2 is a stainless steel pattern plate.
The part of the displacement box 1, which is contacted with the side wall of the supporting beam 3, is provided with a wear-resistant piece 8. By adopting the telescopic device, the thickness of the side cover plate 2 can be reduced to 5mm due to the action of the middle support plate 4, so that the step height difference of the device at the road surface part is only 5mm at most, and people can hardly feel steps when walking, and the comfort and the safety are greatly improved. When the distance between the expansion joints is increased, the displacement controllers 7 are connected with concrete at the beam ends at the two sides of the positions of the expansion joints to work synchronously, the parallelogram structure formed by hinging changes, the position of the middle supporting plate 4 is adjusted to be positioned in the middle of the beam ends at the two sides, the end parts of the supporting beams 3 are moved out of the displacement box 1, and the side cover plates 2 move synchronously, but still keep the lap joint state with the middle supporting plate 4. When the distance between the expansion joints is reduced, the displacement controllers 7 are connected with concrete at the beam ends at the two sides of the positions of the expansion joints to synchronously work, the parallelogram structure formed by hinging changes, the position of the middle supporting plate 4 is adjusted to be positioned in the middle of the beam ends at the two sides, the end parts of the supporting beams 3 extend into the displacement box 1, the edge cover plates 2 synchronously move, and the two edge cover plates 2 are close to each other.
Claims (6)
1. The utility model provides a large displacement pavement telescoping device which characterized in that: the device can be equally divided into a plurality of telescopic units along a transverse bridge direction, each telescopic unit comprises two displacement boxes (1), two side cover plates (2), a support beam (3) and an intermediate support plate (4), the two displacement boxes (1) are of hollow structures and respectively and correspondingly embedded in beam-end concrete at two sides of an expansion joint position, two ends of the support beam (3) are respectively and obliquely arranged in the two displacement boxes (1) correspondingly embedded, the intermediate support plates (4) are horizontally arranged above the support beam (3), the two side cover plates (2) are respectively arranged at two sides of the expansion joint position, one end of each side cover plate (2) is fixedly connected with the beam-end concrete, and the other end of each side cover plate is in lap joint arrangement with one end of the intermediate support plate (4);
two longitudinal beams (5) are arranged in parallel in the transverse bridge direction, the longitudinal beams (5) are connected with supporting beams (3) of a plurality of telescopic units in the device, and the longitudinal beams (5) can slide along the length direction of the supporting beams (3); two bases (6) are arranged on the lower surface of the middle supporting plate (4) in parallel along the bridge direction, two ends of the lower part of the bases (6) are respectively fixed with two longitudinal beams (5), the two longitudinal beams (5) and a plurality of middle supporting plates (4) arranged on the longitudinal beams (5) form a whole, and the upper surface positions of the middle supporting plates (4) are lower than or flush with the pavement of the pavement;
the device also comprises a plurality of displacement controllers (7), and the displacement controllers (7) are horizontally arranged below the telescopic unit at intervals; the displacement controller (7) is formed by hinging two long arms (7-1) and four short arms (7-2) to form two parallelogram structures connected together, hinge points A (7-3) at two ends of the displacement controller (7) are respectively connected with beam end concrete at two sides of the expansion joint position by adopting a connecting piece, hinge points B (7-4) at the central position of the displacement controller (7) are connected with a middle supporting plate (4) corresponding to the middle supporting plate (4) above by adopting the connecting piece, the connecting point of the middle supporting plate (4) and the hinge points B (7-4) is positioned on the transverse bridge direction central line of the middle supporting plate (4), and other hinge points C (7-5) of the displacement controller (7) are in a free state.
2. A large displacement pavement telescoping assembly as set forth in claim 1 wherein: the end part of the supporting beam (3) is movably connected with the displacement box (1), and the end part of the supporting beam (3) can freely stretch and retract in the displacement box (1) along the length direction.
3. A large displacement pavement telescoping assembly as set forth in claim 1 wherein: the supporting beam (3) is cylindrical and integrally rotatable.
4. A large displacement pavement expansion and contraction device according to any one of claims 1-3, characterized in that: the side cover plate (2) is lapped with grooves (2-1) on two sides of one end of the middle supporting plate (4), and the middle supporting plate (4) is installed in the grooves (2-1) in an inserting mode.
5. A large displacement pavement telescoping assembly as set forth in claim 1 wherein: the side cover plate (2) adopts a stainless steel pattern plate.
6. A large displacement pavement expansion and contraction device according to any of claims 1-3 and 5, wherein: the part of the displacement box (1) contacted with the side wall of the supporting beam (3) is provided with a wear-resistant part (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710436956.XA CN107165044B (en) | 2017-06-12 | 2017-06-12 | Large-displacement sidewalk telescopic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710436956.XA CN107165044B (en) | 2017-06-12 | 2017-06-12 | Large-displacement sidewalk telescopic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107165044A CN107165044A (en) | 2017-09-15 |
| CN107165044B true CN107165044B (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710436956.XA Active CN107165044B (en) | 2017-06-12 | 2017-06-12 | Large-displacement sidewalk telescopic device |
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| Country | Link |
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| CN (1) | CN107165044B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200403788Y1 (en) * | 2005-09-16 | 2005-12-14 | 다흰산업개발 주식회사 | Expansion equipment for bridge |
| CN101725109A (en) * | 2009-12-31 | 2010-06-09 | 武汉鑫拓力工程技术有限公司 | Dilatation joint of bridge |
| CN103711074A (en) * | 2013-12-31 | 2014-04-09 | 成都市新筑路桥机械股份有限公司 | Gapless-type large-displacement highway foot-bridge expansion device |
| CN203890872U (en) * | 2014-06-16 | 2014-10-22 | 衡水宝力工程橡胶有限公司 | Modulus-type expansion device with six degrees of freedom |
| CN205617238U (en) * | 2016-05-19 | 2016-10-05 | 重庆建工第二建设有限公司 | Bridge expansion joint device |
| CN205839580U (en) * | 2016-06-13 | 2016-12-28 | 同济大学 | Uniformly displacement drag-line modulus expansion joint |
| CN207017147U (en) * | 2017-06-12 | 2018-02-16 | 四川双建路桥机械有限责任公司 | A kind of big displacement Telescopic device of pedestrian way |
-
2017
- 2017-06-12 CN CN201710436956.XA patent/CN107165044B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200403788Y1 (en) * | 2005-09-16 | 2005-12-14 | 다흰산업개발 주식회사 | Expansion equipment for bridge |
| CN101725109A (en) * | 2009-12-31 | 2010-06-09 | 武汉鑫拓力工程技术有限公司 | Dilatation joint of bridge |
| CN103711074A (en) * | 2013-12-31 | 2014-04-09 | 成都市新筑路桥机械股份有限公司 | Gapless-type large-displacement highway foot-bridge expansion device |
| CN203890872U (en) * | 2014-06-16 | 2014-10-22 | 衡水宝力工程橡胶有限公司 | Modulus-type expansion device with six degrees of freedom |
| CN205617238U (en) * | 2016-05-19 | 2016-10-05 | 重庆建工第二建设有限公司 | Bridge expansion joint device |
| CN205839580U (en) * | 2016-06-13 | 2016-12-28 | 同济大学 | Uniformly displacement drag-line modulus expansion joint |
| CN207017147U (en) * | 2017-06-12 | 2018-02-16 | 四川双建路桥机械有限责任公司 | A kind of big displacement Telescopic device of pedestrian way |
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| Publication number | Publication date |
|---|---|
| CN107165044A (en) | 2017-09-15 |
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