EP3969663A1 - Joint de dilatation carrossable - Google Patents
Joint de dilatation carrossableInfo
- Publication number
- EP3969663A1 EP3969663A1 EP20724148.0A EP20724148A EP3969663A1 EP 3969663 A1 EP3969663 A1 EP 3969663A1 EP 20724148 A EP20724148 A EP 20724148A EP 3969663 A1 EP3969663 A1 EP 3969663A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- groove
- threaded elements
- joint according
- threaded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Definitions
- the present invention relates to civil engineering equipment and more specifically to expansion joints.
- Drive-over expansion joints are used to connect two portions of road surface likely to undergo relative displacements. These seals are arranged so as to fill in the clearances extending between the coating portions concerned, thus ensuring the continuity of the bearing.
- Expansion joints conventionally comprise toothed metal plates fixed to profiles.
- EP1327026 teaches to eliminate this risk by fixing the toothed plates by welding. While this provides an effective solution to the risk of loosening the screws, the maintenance of the seal is made more difficult and in particular the replacement of the gaskets connecting the profiles.
- One of the aims of the invention is thus to provide an expansion joint which is reliable in use and easy to maintain.
- the invention aims to achieve this objective and it achieves this by means of a drive-over expansion joint, comprising:
- At least one joint profile is
- toothed bearing plate at least one toothed bearing plate, this plate having bores provided with countersinks,
- the seal according to the invention may include a sealing gasket received in a groove of the profile.
- lock washers helps keep threaded elements locked in rotation after they have been tightened. These lock washers permanently maintain a pre-stressing force in the threaded elements. Thus, the invention reduces the risk of unwanted loosening of the threaded elements, a source of vibration and noise.
- toothed plates are held by threaded elements on the profiles allows relatively quick and easy maintenance of the expansion joint. It is therefore easier to change certain component parts, such as the gaskets.
- the threaded elements are engaged in bores of the section opening into said groove, which makes it possible to maximize the length of engagement of the screws.
- the threaded elements can come into contact with the seal.
- the surface of the groove into which the bores open may be concave inwardly of the groove, and the threaded members may be of such a length that their end extends at least partially out of the bore inside the groove.
- the profile can be an edge profile comprising a single groove for receiving the seal.
- the profile can also be an intermediate profile comprising two grooves, open in opposite directions, for receiving respective seals.
- This profile may have holes which open into the interior of the grooves. The holes opening into one of the grooves can be offset along the longitudinal axis of the profile relative to the holes opening into the other groove.
- the bores opening into one of the grooves occupy the same position along the longitudinal axis of the profile as the holes opening into the other groove, the threaded elements being engaged alternately in the holes associated with said grooves. This can allow mounting of the toothed plates in two reverse configurations on the intermediate profile.
- the or each groove may include a flanged edge delimiting its opening above; the holes for receiving the threaded elements can open out behind this flanged edge.
- the threaded elements can be head screws or nuts, and preferably are head screws.
- the seal may include at least two toothed rolling plates arranged in the extension of one another, preferably with a longitudinal overlap of one of the plates by the other; each of the plates may have at least one end tooth, the bases of the end teeth of the two toothed plates coming into contact.
- the locking washers can be elastic, so that they can be deformed flat by forming a spring between the threaded elements and the bottom of the countersinks. This makes it possible to introduce the desired prestress in the threaded elements.
- Lock washers can be cam-operated. Such locking washers are for example described in application US20180023614 and are marketed by the company NORD LOCK under the name “Nord Lock Washer X”.
- the locking washers each comprise two toothed rings, at least one of which is elastic, preferably both are elastic, the rings being provided on their facing faces with notches arranged such that a relative rotation of the rings in the direction of unscrewing of the threaded element is accompanied, by cam effect, by a spacing of the crowns opposing unscrewing.
- the crowns can each have a substantially frustoconical shape at rest.
- the notches exerting the cam effect are preferably inclined at an angle, with respect to a transverse plane of the lock washer perpendicular to the axis of the threaded element, greater than that of the helix angle of the threaded element.
- Figure 1 is a partial and schematic perspective view of an example of an expansion joint according to the invention.
- Figure 2 is a top view of the seal shown in Figure 1,
- FIG. 3 shows in isolation, in perspective, an example of toothed plates corresponding to an edge plate, seen from above and from below,
- Figure 4 is a view similar to Figure 3 of a variant of toothed plate corresponding to an intermediate plate
- Figure 5 is a partial cross section of an example of an expansion joint according to the invention
- Figure 6 shows in axial section a threaded element and an associated locking washer according to the invention
- FIG. 7 shows in isolation, in perspective, a pair of toothed crowns with a locking washer.
- This joint 1 comprises a set of profiles 100 intended to connect two portions of the road surface (not shown).
- the seal 1 thus comprises two edge profiles 120 and several intermediate profiles 140 arranged between the edge profiles 120.
- the seal 1 comprises several toothed rolling plates 200, fixed by threaded elements 300 on the profiles 120 and 140.
- the tread plates 200 each have a plurality of teeth 250 extending toward an adjacent plate 200.
- the teeth 250 of two adjacent plates 200 are arranged so as to interlock when the two plates approach each other.
- the expansion joint 1 comprises two types of bearing plates 200, namely:
- Each bearing plate 200 has bores 245 provided with countersinks 265 in which the threaded elements 300 are received.
- each toothed bearing plate 200 can be arranged in the extension of one another. Two successive plates 200 preferably have a longitudinal overlap, as can be seen in FIG. 2. This overlap can be done so that the bases 255 of the end teeth come into mutual contact.
- the threaded elements 300 are screws each provided with a head 310 and a threaded rod 315.
- Lock washers 350 are interposed axially between the threaded elements 300 and the bottom of the countersinks 265, thus making it possible to oppose a loosening of the threaded elements 300.
- the lock washers are elastically deformable, so that they can be deformed flat. and forming a spring between the threaded elements 300 and the bottom of the countersinks 265.
- each locking washer 350 comprises two toothed rings 352 and 354 which are superimposed and come into contact.
- Crowns 352 and 354 have outer faces 352a and 354b which rest against thread member 300 and counterbore 265, respectively.
- the rings 352 and 354 are provided, on their opposite faces 352b and 354a, with notches 355 arranged such that a relative rotation of the rings 322 and 324 in the direction of unscrewing of the threaded element 300 is accompanied, by cam effect, of a separation of the crowns opposing unscrewing.
- the notches 355 are inclined at an angle a, relative to a transverse plane P of the washer 350, greater than that of the helix angle b of the thread, which causes a positive and effective locking of the threaded element.
- the edge profiles 120 each comprise a sole 122 having the general shape of an L-shaped angle iron, as can be seen in FIG. 5 in particular.
- Each edge profile 120 has a groove 150 intended to receive a seal (not shown).
- This groove 150 has a flanged edge 157 superiorly delimiting its opening.
- the profile 120 has a rib 125 which below delimits the groove 150.
- the profiles 120 and 140 have holes 155 which open into the grooves 150.
- Each groove 150 has an internal surface 152, onto which the holes 155 open, concave towards the inside of the groove 150.
- the threaded elements 300 have a length L such that their end 301 extends at least partially out of the bore 155 inside the groove 150.
- the threaded element 300 can extend out of the bore 155 in the groove 150 d 'a distance d greater than or equal to 2mm, and thus come into contact with the sealing gasket therein.
- the intermediate profiles 140 each include a sole 142 having the general shape of an inverted T.
- Each intermediate section 140 has two grooves 150, open in opposite directions, in which the gaskets are received. Drills 155 open inside these grooves 150, in a similar way to what has been described for the edge profiles 120.
- the holes 155 opening into one of the grooves 150 are offset, along the longitudinal axis of the profile 140, relative to the holes opening into the other groove 150.
- the bores 155 opening into one of the grooves 150 occupy the same position, along the longitudinal axis of the profile, as the bores 155 opening into the other groove 150, as illustrated in FIG. 5.
- the threaded elements 300 can be engaged alternately in the bores 155.
- cap screws can be replaced with threaded rods and nuts.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Gasket Seals (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1904931A FR3096060B1 (fr) | 2019-05-13 | 2019-05-13 | Joint de dilatation carrossable |
| PCT/EP2020/063223 WO2020229487A1 (fr) | 2019-05-13 | 2020-05-12 | Joint de dilatation carrossable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3969663A1 true EP3969663A1 (fr) | 2022-03-23 |
| EP3969663B1 EP3969663B1 (fr) | 2024-11-20 |
Family
ID=68987729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20724148.0A Active EP3969663B1 (fr) | 2019-05-13 | 2020-05-12 | Joint de dilatation carrossable |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3969663B1 (fr) |
| FR (1) | FR3096060B1 (fr) |
| WO (1) | WO2020229487A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935373B (zh) * | 2022-07-25 | 2023-03-17 | 南京大学 | 一种桥梁伸缩缝病害数据模拟采集系统 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2124966C3 (de) | 1971-05-19 | 1975-06-12 | Rheinstahl Ag, 4300 Essen | Fahrbahnübergang für Dehnfugen in StraBen und Gehwegen, insbesondere von Brücken |
| DE4433909C2 (de) | 1994-09-22 | 1997-11-27 | Alfred Hartkorn | Fugenüberbrückungsvorrichtung |
| CN1194141C (zh) | 2000-09-26 | 2005-03-23 | 毛勒·索尼公司 | 用于搭接伸缩缝的装置的齿板结构 |
| KR100488624B1 (ko) | 2004-04-13 | 2005-05-11 | 주식회사 동아기술공사 | 소음/충격 완화 및 볼트/너트 풀림방지 수단을 구비한신축 이음장치 및 그 시공방법 |
| KR100726379B1 (ko) * | 2006-02-24 | 2007-06-08 | 주식회사 에스코알티에스 | 교량용 알루미늄 신축이음장치 |
| SE540899C2 (en) | 2015-02-04 | 2018-12-18 | Nord Lock Ab | Wedge locking washer with increased corrosion resistance and method for its manufacture |
| DE102017105092A1 (de) | 2017-03-10 | 2018-09-13 | Mageba S.A. | Überbrückungsvorrichtung |
-
2019
- 2019-05-13 FR FR1904931A patent/FR3096060B1/fr active Active
-
2020
- 2020-05-12 WO PCT/EP2020/063223 patent/WO2020229487A1/fr not_active Ceased
- 2020-05-12 EP EP20724148.0A patent/EP3969663B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3096060A1 (fr) | 2020-11-20 |
| EP3969663B1 (fr) | 2024-11-20 |
| WO2020229487A1 (fr) | 2020-11-19 |
| FR3096060B1 (fr) | 2021-06-18 |
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