CN208857688U - A kind of driving Self-resetting bridge extension joint of crankshaft - Google Patents
A kind of driving Self-resetting bridge extension joint of crankshaft Download PDFInfo
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- CN208857688U CN208857688U CN201821565763.0U CN201821565763U CN208857688U CN 208857688 U CN208857688 U CN 208857688U CN 201821565763 U CN201821565763 U CN 201821565763U CN 208857688 U CN208857688 U CN 208857688U
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Abstract
The utility model relates to a kind of driving Self-resetting bridge extension joint of crankshaft, including main tooth plate and secondary tooth plate, main tooth plate is located above expansion joint and covers front and rear sides beam body edge, and secondary tooth plate is engaged with the docking of main tooth plate by comb teeth and is located at rear side beam body edge；Main tooth plate front end is horizontally arranged at interval notch, and notch board is provided in notch, and main tooth plate front end bottom surface and fovea superior board bottom face are provided with laterally coherent fovea superior cylinder；Concave plate is provided with below main tooth plate front end, recessed plate top surface is provided with the recessed cylinder laterally to link up corresponding with fovea superior cylinder, is provided with lateral crankshaft in the space between fovea superior cylinder and recessed cylinder.When beam body is acted on by extraneous load, main tooth plate is parallel with bridge deck pavement always along crank rotation, can convert vertical corner to horizontal extension displacement, avoid bridge deck damage caused by vertical rotating and stick up traffic accident caused by tooth etc., guarantee that road vehicles smoothly pass through.
Description
Technical field
The utility model relates to a kind of bridge extension joints, and in particular to a kind of flexible dress of the driving Self-resetting bridge of crankshaft
It sets.
Background technique
In order to make vehicle smoothly pass bridge top and meet the needs of bridge deformation, it is provided at bridge floor variator
Bridge extension joint, bridge extension joint are one of important components of bridge, and not only adjustable car load, environment are special
Displacement and rotation and vehicle between superstructure caused by beam body of seeking peace itself pass through the important primary structure member of bridge floor.
Currently, bridge extension joint mainly includes modulus telescopic device and fishback telescopic device.
Under usual conditions, telescopic device must satisfy beam body under the external forces such as temperature, strong wind, mobile load, earthquake
The requirement of the multiple-directional rotatings such as the longitudinal, vertical of generation, transverse direction, torsion；The anchoring assembly of telescopic device must be solid and reliable, prolonged resistance to
With can resist frictional dissipation between vehicle and telescopic device, moment impact, also to guarantee that vehicle driving is steady, noise is small
Etc. features；Under prolonged military service operating condition, telescopic device can prevent rainwater and rubbish from penetrating into, and easy for installation, simple and fast,
Replacement is convenient.
Since the stress condition and rotation mechanism of telescopic device are complex, bridge extension joint is easy in early days after mounting
It destroys, the deformation of seam body and rear pouring concrete surface localized delamination, or even the diseases such as breakage occurs, therefore telescopic device is bridge work
It is easiest to the component of damage in journey, not only influences bridge active time, harm also is brought to society and traffic safety.Current mould
Number telescopic device is a kind of grating type device, such telescopic device is widely used, but the defect of its structure and performance, is resulted in very
Mostly serious breakoff phenomenon, and there is great traffic accident, it is mainly shown as that fashioned iron is broken, bearing falls off, sealing
The problems such as desmorrhexis, has seriously affected the development of China's communication；The multi-directional deflection telescopic device of rising in recent years has gone up
For traffic industry standard (JT/T927-2008), but the device be easy to cause the destruction of bridge deck pavement in vertical rotating, and
Due to the defect of self construction, running clearance is smaller, and no runback bit function, over time, displacement device are exposed in bridge floor, causes
Shaft is cut, displacement failure, very harmful.Also occurs other multi-directional deflection telescopic devices such as spherical cap structure, board-like in the market
Seat structure, pot bearing structure etc., but all lead to the destruction of bridge deck pavement nothing more than, do not tackle the problem at its root.
Summary of the invention
It will cause deck paving damage layer in vertical rotating for the more multi-directional deflection telescopic device of application at present
Defect, the utility model provides a kind of driving Self-resetting bridge extension joint of crankshaft to be made by the rotation of lower surface camber on crankshaft
Plane is parallel with bridge deck pavement on tooth plate, reduces the impulse force of pave-load layer, and by tooth plate self gravity, reaches reset function.
The technology employed by the present utility model is
A kind of driving Self-resetting bridge extension joint of crankshaft, including main tooth plate and secondary tooth plate, it is characterised in that:
Main tooth plate is located above expansion joint and covers front and rear sides beam body edge, and secondary tooth plate is docked by comb teeth with main tooth plate
It is engaged and is located at rear side beam body edge；
Main tooth plate front end is horizontally arranged at interval notch, and notch board, main tooth plate front end bottom surface and upper notch board are provided in notch
Bottom surface is provided with laterally coherent fovea superior cylinder；Be provided with concave plate below main tooth plate front end, recessed plate top surface be provided with it is upper
Recessed cylinder corresponding laterally coherent recessed cylinder is provided with lateral song in the space between fovea superior cylinder and recessed cylinder
Axis.
The step that sink is arranged in the beam body edge of expansion joint front and rear sides, and main tooth plate and secondary tooth plate, which are located at, to sink above step simultaneously
It is fixed by casting concrete.
Upper notch board and concave plate front and rear sides are fixed by the U-bolt of lower section, and U-bolt top end is located at upper notch board
In the deep gouge on surface and it is provided with stop nut and rubber sheet gasket, U-bolt top end has spiral shell in the screw hole of upper notch board
Bolt gap.
Main tooth plate is fixed in the casting concrete at front side beam body edge by T-bolt, and T-bolt top end is located at
In the deep gouge on main tooth plate surface and it is provided with stop nut and steel plate washer, T-bolt top end has in the screw hole of main tooth plate
There is bolt-clearance；
Secondary tooth plate is fixed in the casting concrete at rear side beam body edge by T-bolt, and T-bolt top end is located at
In the deep gouge on secondary tooth plate surface and it is provided with stop nut and steel plate washer, T-bolt top end has in the screw hole of secondary tooth plate
There is bolt-clearance.
Transversely arranged multiple U-shaped steel muscle are provided in the casting concrete at front side beam body edge, U-shaped steel muscle bottom end is protruded into
In girder construction, the U-bolt at front side beam body edge and T-bolt bottom are each welded on U-shaped steel muscle；Between U-shaped steel muscle, U
Transverse steel is provided between type bolt.
Transversely arranged multiple U-shaped steel muscle are provided in the casting concrete at rear side beam body edge, U-shaped steel muscle bottom end is protruded into
In girder construction, the T-bolt bottom at rear side beam body edge is welded on U-shaped steel muscle；Lateral steel is provided between U-shaped steel muscle
Muscle.
Main tooth plate and secondary tooth plate bottom surface are provided with stainless steel plate.
Dust excluder is provided in the concave plate of crankshaft front and rear sides.
It is provided with transversely arranged hollow reinforcing bar in the casting concrete at rear side beam body edge, is provided between hollow reinforcing bar
Transverse steel is simultaneously banded together with U-shaped steel muscle.
Main tooth plate front end face and secondary tooth plate rear end face are provided with rubber layer.
The utility model has the advantage that
One, it by improvement displacement device structure, is constructed using crankshaft driven, in vertical rotating, sphere diameter edge under crankshaft
Concave plate swing, in order to guarantee that main tooth plate plane is parallel with bridge deck pavement, on crankshaft plane around upper notch board internal diameter to stretch
Direction rotation, is transformed to horizontal displacement for vertical corner, avoids main tooth plate and contact with the rotation of bridge deck pavement, and pass through master
The gravity of tooth plate itself, is returned to original state.
Two, this telescopic device prevents sundries from entering rotational area by being provided with dust excluder between upper notch board and concave plate
Domain, extends the rotation service life of crankshaft, and then improves the whole operation service life of telescopic device.
Three, this telescopic device improves the concave plate of crank shaft gear lower part and pours coagulation by using U-bolt
The bonding strength of soil, and U-shaped steel muscle and U-bolt are welded by transverse steel, it ensure that the connection of casting concrete and beam body
Intensity.
Four, this telescopic device increases frictional force of the vehicle by the flank of tooth by being machined with non-slip groove on main tooth plate surface,
So that lateral rotation probability reduces, telescopic device service life is extended, traffic risk is reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the main view of Fig. 2.
Fig. 4 is crankshaft configuration schematic diagram.
Fig. 5 is crankshaft configuration rotary principle schematic diagram.
Marked in the figure:
1-bridge deck pavement, 2-casting concretes, the main tooth plate of 3-1-, 3-2-pair tooth plate, 4-crankshafts；5-1-is recessed
Plate, 5-2-go up notch board, 6-stainless steel plates, 7-sealing components, 8-hollow reinforcing bars, 9-U-shaped steel muscle, 10-transverse steels,
11-rubber layers, 12-stop nuts, 13-rubber sheet gaskets, 14-U-bolts, 15-dust excluders, 16-steel plate washers, 17-T
Type bolt, 18-bolt-clearances, 19-non-slip grooves, 20-cooperation otic placodes, 21-1-pair backlash, the main backlash 21-2-.
Specific embodiment
The utility model is described in detail With reference to embodiment.
The utility model relates to a kind of driving Self-resetting bridge extension joints of crankshaft, suitable for there is vertical rotating demand
Vertical corner can be transformed to by highway concrete bridge, steel girder bridge, steel box-girder and various composite beam bridges, specifically one kind
Horizontal displacement and the bridge extension joint to automatically reset by main tooth plate weight.
Structure specifically includes main tooth plate 3-1 and secondary tooth plate 3-2, and main tooth plate 3-1 is located above expansion joint and covers front and back two
Curb girder body edge, secondary tooth plate 3-2 are engaged with main tooth plate 3-1 docking by comb teeth and are located at rear side beam body edge, and occlusion portion is located at
Above rear side beam body.Main tooth plate 3-1 and secondary tooth plate 3-2 abutting end arranged crosswise, are in comb teeth shape, between horizontal clearance guarantee beam
Horizontal displacement under body free extension and rotational transform, lateral clearance guarantee the displacement of beam body cross-bridges.Under limiting condition, overlap joint length
Degree is not less than 30mm, and lateral clearance guarantees the displacement of beam body cross-bridges, is not less than 2mm.Master between main tooth plate 3-1 and secondary tooth plate 3-2
Secondary backlash 21-1 between cog 21-2 gap and pair tooth plate 3-2 and main tooth plate 3-1 is equal sized, and gap width is flexible for temperature
The synthesis numerical value of amount, vertical rotating variable quantity and lap of splice equivalence.
The front end main tooth plate 3-1 is horizontally arranged at interval notch, and notch board 5-2, the setting of the edge upper notch board 5-2 are provided in notch
There is cooperation otic placode 20 to be inserted into the corresponding groove of main tooth plate 3-1, otic placode number can be 1 or 2 in fovea superior edges of boards.Such as Fig. 3, on
The three sides design of notch board 5-2 and main tooth plate 3-1 has cooperation otic placode.The front end main tooth plate 3-1 bottom surface is provided with the bottom surface upper notch board 5-2
Laterally coherent fovea superior cylinder；It is provided with concave plate 5-1 below the front end main tooth plate 3-1, the top surface concave plate 5-1 is provided with and fovea superior
Cylinder corresponding laterally coherent recessed cylinder is provided with lateral crankshaft 4 in the space between fovea superior cylinder and recessed cylinder.
The upper and lower sphere diameter of crankshaft 4 constitutes two rotation cylinders with the upper sphere diameter of the lower sphere diameter of upper notch board 5-2, concave plate 5-1 respectively, turns
Dynamic face can chromium plating, polyfluortetraethylene plate and stainless steel plate cooperate, coefficient of friction is small.The large ball diameter R of two planes of rotation, small sphere diameter r
It is not less than 1.5 with crankshaft diameter of section ratio, the straight platform length of crankshaft cylindrical section is not less than 10mm.
The step that sink is arranged in the beam body edge of expansion joint front and rear sides, and main tooth plate 3-1 and pair tooth plate 3-2 are located at the step that sink
Top is simultaneously fixed by casting concrete 2.
Upper notch board 5-2 and the front and rear sides concave plate 5-1 are fixed by the U-bolt 14 of lower section, 14 top end of U-bolt
In the deep gouge on the surface upper notch board 5-2 and it is provided with stop nut 12 and rubber sheet gasket 13, overcomes by rubber sheet gasket 13 and turns
The amount of raising of main tooth plate 3-1 when dynamic.Deep gouge internal diameter diameter is not less than 16mm.14 top end of U-bolt is upper notch board 5-2's
There is bolt-clearance 18 in screw hole, be not less than 5mm, vertical rotating conversion levels displacement space is provided.
Main tooth plate 3-1 is fixed in the casting concrete 2 at front side beam body edge by T-bolt 17,17 top of T-bolt
End is located in the deep gouge on the surface main tooth plate 3-1 and is provided with stop nut 12 and steel plate washer 16.Deep gouge internal diameter diameter is not less than
16mm.17 top end of T-bolt has bolt-clearance 18 in the screw hole of main tooth plate 3-1, is not less than 5mm, provides vertical turn
Dynamic conversion levels displacement space.
Secondary tooth plate 3-2 is fixed in the casting concrete 2 at rear side beam body edge by T-bolt 17,17 top of T-bolt
End is located in the deep gouge on the pair surface tooth plate 3-2 and is provided with stop nut 12 and steel plate washer 16.Deep gouge internal diameter diameter is not less than
16mm.17 top end of T-bolt has bolt-clearance 18 in the screw hole of secondary tooth plate 3-2, is not less than 5mm, provides vertical turn
Dynamic conversion levels displacement space.
Transversely arranged multiple U-shaped steel muscle 9,9 bottom end of U-shaped steel muscle are provided in the casting concrete 2 at front side beam body edge
It protrudes into girder construction, the U-bolt 14 at front side beam body edge and 17 bottom of T-bolt are each welded on U-shaped steel muscle 9；U-shaped steel
Between muscle 9, transverse steel 10 is provided between U-bolt 14.
Transversely arranged multiple U-shaped steel muscle 9,9 bottom end of U-shaped steel muscle are provided in the casting concrete 2 at rear side beam body edge
It protrudes into girder construction, 17 bottom of T-bolt at rear side beam body edge is welded on U-shaped steel muscle 9；It is provided between U-shaped steel muscle 9
Transverse steel 10.
Main tooth plate 3-1 and the pair bottom surface tooth plate 3-2 are provided with stainless steel plate 6.
It is provided with dust excluder 15 on the concave plate 5-1 of 4 front and rear sides of crankshaft, it is isometric with crankshaft 4.15 insert depth of dust excluder
It is not less than 5mm with thickness, upper notch board is located at dust excluder top, and compression surplus is 0.2~0.5mm.
It is provided with transversely arranged hollow reinforcing bar 8 in the casting concrete 2 at rear side beam body edge, is set between hollow reinforcing bar 8
It is equipped with transverse steel 10 and is banded together with U-shaped steel muscle 9.
Main tooth plate 3-1 front end face and secondary tooth plate 3-2 rear end face are provided with rubber layer 11, and rubber layer thickness is not less than
10mm。
All transverse steels are monoblock type, and with bridge with width, diameter is not less than 16mm.
If Fig. 5 is the vertical rotating conversion levels displacement principle of the present apparatus, when main tooth plate 3-1 is around 4 Double-side rotary of crankshaft,
Main tooth plate 3-1 has certain lifting, and rising height is related with the sphere diameter up and down of crankshaft 4, passes through 13 thickness direction of rubber washer
Elastic force overcomes.
The utility model utilizes sphere diameter, concave plate under the sphere diameter up and down and upper notch board 5-2 of the crankshaft 4 of the side main tooth plate 3-1
Double-directional rotary between the upper sphere diameter of 5-1 realizes that vertical corner is converted into the principle of horizontal displacement, and is made by the gravity of main tooth plate
With recycling crankshaft 4 carries out reverse reverting, realizes runback bit function, avoids the edge main tooth plate 3-1 and bridge deck pavement 1
It destroys.It is mainly used in highway concrete bridge, steel girder bridge, steel box girder bridge and various composite beam bridges etc..
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are practical new by reading this
Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (10)
1. a kind of driving Self-resetting bridge extension joint of crankshaft, including main tooth plate (3-1) and secondary tooth plate (3-2), feature exists
In:
Main tooth plate (3-1) is located above expansion joint and covers front and rear sides beam body edge, and secondary tooth plate (3-2) passes through comb teeth and main tooth
Plate (3-1) docking is engaged and is located at rear side beam body edge；
Main tooth plate (3-1) front end is horizontally arranged at interval notch, is provided in notch notch board (5-2), main tooth plate (3-1) front end bottom
Face and the bottom surface upper notch board (5-2) are provided with laterally coherent fovea superior cylinder；Concave plate is provided with below main tooth plate (3-1) front end
(5-1), the top surface concave plate (5-1) are provided with laterally coherent recessed cylinder corresponding with fovea superior cylinder, fovea superior cylinder and recessed
Lateral crankshaft (4) are provided in space between cylinder.
2. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 1, it is characterised in that:
The step that sink is arranged in the beam body edge of expansion joint front and rear sides, and main tooth plate (3-1) and secondary tooth plate (3-2) are located at the step that sink
Top is simultaneously fixed by casting concrete (2).
3. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 2, it is characterised in that:
Upper notch board (5-2) and the concave plate front and rear sides (5-1) are fixed by the U-bolt (14) of lower section, U-bolt (14) top
End is located in the deep gouge on the surface upper notch board (5-2) and is provided with stop nut (12) and rubber sheet gasket (13), U-bolt (14)
Top end has bolt-clearance (18) in the screw hole of upper notch board (5-2).
4. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 3, it is characterised in that:
Main tooth plate (3-1) is fixed in the casting concrete (2) at front side beam body edge by T-bolt (17), T-bolt (17)
Top end is located in the deep gouge on the surface main tooth plate (3-1) and is provided with stop nut (12) and steel plate washer (16), T-bolt
(17) top end has bolt-clearance (18) in the screw hole of main tooth plate (3-1)；
Secondary tooth plate (3-2) is fixed in the casting concrete (2) at rear side beam body edge by T-bolt (17), T-bolt (17)
Top end is located in the deep gouge on secondary surface tooth plate (3-2) and is provided with stop nut (12) and steel plate washer (16), T-bolt
(17) top end has bolt-clearance (18) in the screw hole of secondary tooth plate (3-2).
5. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 4, it is characterised in that:
Transversely arranged multiple U-shaped steel muscle (9), U-shaped steel muscle (9) bottom are provided in the casting concrete (2) at front side beam body edge
End is protruded into girder construction, and the U-bolt (14) at front side beam body edge and T-bolt (17) bottom are each welded to U-shaped steel muscle (9)
On；Between U-shaped steel muscle (9), transverse steel (10) are provided between U-bolt (14).
6. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 5, it is characterised in that:
Transversely arranged multiple U-shaped steel muscle (9), U-shaped steel muscle (9) bottom are provided in the casting concrete (2) at rear side beam body edge
End is protruded into girder construction, and T-bolt (17) bottom at rear side beam body edge is welded on U-shaped steel muscle (9)；U-shaped steel muscle (9) it
Between be provided with transverse steel (10).
7. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 6, it is characterised in that:
Main tooth plate (3-1) and secondary bottom surface tooth plate (3-2) are provided with stainless steel plate (6).
8. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 7, it is characterised in that:
Dust excluder (15) are provided in the concave plate (5-1) of crankshaft (4) front and rear sides.
9. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 8, it is characterised in that:
Transversely arranged hollow reinforcing bar (8) is provided in the casting concrete (2) at rear side beam body edge, between hollow reinforcing bar (8)
It is provided with transverse steel (10) and is banded together with U-shaped steel muscle (9).
10. the driving Self-resetting bridge extension joint of a kind of crankshaft according to claim 9, it is characterised in that:
Main tooth plate (3-1) front end face and secondary tooth plate (3-2) rear end face are provided with rubber layer (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821565763.0U CN208857688U (en) | 2018-09-26 | 2018-09-26 | A kind of driving Self-resetting bridge extension joint of crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821565763.0U CN208857688U (en) | 2018-09-26 | 2018-09-26 | A kind of driving Self-resetting bridge extension joint of crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208857688U true CN208857688U (en) | 2019-05-14 |
Family
ID=66419127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821565763.0U Active CN208857688U (en) | 2018-09-26 | 2018-09-26 | A kind of driving Self-resetting bridge extension joint of crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208857688U (en) |
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2018
- 2018-09-26 CN CN201821565763.0U patent/CN208857688U/en active Active
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