CN108660942A - A kind of large-tonnage rotator construction flexural pivot - Google Patents
A kind of large-tonnage rotator construction flexural pivot Download PDFInfo
- Publication number
- CN108660942A CN108660942A CN201810714950.9A CN201810714950A CN108660942A CN 108660942 A CN108660942 A CN 108660942A CN 201810714950 A CN201810714950 A CN 201810714950A CN 108660942 A CN108660942 A CN 108660942A
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- flexural pivot
- disk
- steel ball
- top surface
- diameter
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Classifications
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
Abstract
A kind of large-tonnage rotator construction flexural pivot, lower spherical hinge structure are：Top surface is that the disk top surface of concave arc is fixed with an axis pin, the circular concave of multiple concentric circles is evenly equipped on disk top surface, steel ball there are one being placed on each circular concave, there are one open round-meshed steel plate thereon for each steel ball covering, or, the piecemeal activity more than radius of each steel ball is embedded in a circular concave, and opening diameter is less than steel ball diameter in the circle of the circular concave；Upper spherical hinge structure is：The bottom surface of disk identical with lower flexural pivot disk diameter is outer convex, has the blind hole of an axis pin activity insertion for supplying lower flexural pivot on the disk bottom surface and is provided with a plurality of annular groove for forming rolling cooperation corresponding to multiple steel balls of lower flexural pivot top surface.Upper and lower flexural pivot is mutually fixed with bridge pier and cushion cap respectively by rod iron when construction, and rolling friction is formed by flexural pivot.The features such as this flexural pivot, which has, to be skillfully constructed, simple in structure, and friction coefficient is small, the rotator construction especially suitable for large-tonnage component.
Description
Technical field
The present invention relates to Bridge Rotation Construction Technique technical field, more particularly to a kind of large-tonnage rotator construction flexural pivot.
Background technology
Bridge Rotation Construction Technique technique functions are got application using vertical transfer method in Arch Bridge Construction at first derived from Europe, then
Flat turn method is developed in succession and method that flat vertical transfer is combined again, the bridge type suitable for rotator construction has arch bridge, beam bridge, rigid structure
Bridge and cable-stayed bridge.In recent years, China is inevitable in progress highway and railway infrastructure construction on a large scale, circuit design process
A rational construction method using rotator construction across existing highway and railway, especially across high-speed railway and
When highway, in order to not influence traffic normal operation and existing line foundation of road bed, also needed while using rotator construction
Minimum range of the pier location away from existing line roadbed is limited, this means that result is to turn using greatly across rotator construction
Body bridge develops towards large-tonnage and super-tonnage.
Flexural pivot is most important device in Bridge Rotation Construction Technique, is the combination of the support system and swing system of swivel structure
Body.Conventional flexural pivot carries out on-site consolidation using upper flexural pivot and lower flexural pivot currently on the market, and installation accuracy is necessarily by site operation
The influence of condition, environment temperature and humidity brings security risk to rotator construction.The lower flexural pivot of conventional flexural pivot currently on the market
By installing the sphere-contact of round nonmetallic slide plate and upper flexural pivot on spherical surface, tractive force size depends on turning weight when swivel
With the coefficient of sliding friction of nonmetallic slide plate, sliding confficient of static friction is 0.1 or so, has been difficult significantly to reduce the quiet of material to rub
Coefficient is wiped, bridge rotating weight is directly limited.
Invention content
In view of the problems of the existing technology the purpose of the present invention proposes that one kind can bear large-tonnage component and friction
The small large-tonnage rotator construction flexural pivot of coefficient.
The object of the present invention is achieved like this：A kind of large-tonnage rotator construction flexural pivot, lower spherical hinge structure are：Disk
Top surface is concave arc, and disk end face center is fixed with an axis pin, and the disk top surface multiple concentric circles of upper edge be evenly equipped with it is multiple
Circular concave is placed on each circular concave there are one steel ball, be covered on each steel ball one open thereon it is round-meshed
Steel plate, the diameter of the circular hole are less than the diameter of steel ball, alternatively, the piecemeal activity more than radius of each steel ball is embedded in one
In circular concave, and opening diameter is less than steel ball diameter in the circle of the circular concave；Upper spherical hinge structure is：The diameter of disk
Identical as the lower disk diameter of flexural pivot, the bottom surface of the disk is the outer convex to match with lower flexural pivot top surface, the disk bottom surface
There is a blind hole being inserted into for the axis pin activity of lower flexural pivot at center, is provided with corresponding to the multiple same of lower flexural pivot top surface on the disk bottom surface
Heart circle simultaneously forms a plurality of annular groove for rolling cooperation with steel ball.
It is used as when being fixed with construction on the top surface of the upper flexural pivot and the bottom surface of lower flexural pivot mutually solid with bridge pier and cushion cap respectively
The rod iron of connection；It is described that open round-meshed steel plate be a monoblock steel plate for covering all steel balls.
There is the outwardly extending annulus of a circle on the adjacent surface periphery of the upper and lower flexural pivot respectively, it is uniformly distributed on two annulus
Have for bolted bolt hole.
The bolt hole is 8, and the radius of the steel ball is 3cm~6cm.
The upper and lower flexural pivot is the upper and lower flexural pivot of steel.
This large-tonnage rotator construction flexural pivot includes upper flexural pivot and lower flexural pivot；The upper flexural pivot lower end is convex spherical, institute
It is concave spherical surface to state lower flexural pivot upper end；The upper flexural pivot carries out assembling in factory with lower flexural pivot and edits, and is faced by bolt group
When fix；The upper flexural pivot is made up of the rotating mechanism of flexural pivot with lower flexural pivot axis pin；The upper flexural pivot passes through pre- with lower flexural pivot
Rod iron is buried to be connected and fixed with bridge pier and cushion cap respectively；It is contacted by steel ball group between the upper flexural pivot and lower flexural pivot, makes flexural pivot
It is rolling friction when rotation.
Compared with prior art, this flexural pivot has the characteristics that and advantage：
1. it is skillfully constructed, simple in structure, low manufacture cost.
It is contacted using steel ball group between flexural pivot and lower flexural pivot on 2., it is rolling friction, tool to change traditional sliding friction
It bears large-tonnage and friction coefficient is small；And upper and lower flexural pivot carries out assembling in factory and edits, and has structure precision high
The fast advantage with site construction.
The present invention makes to contact using steel ball group between flexural pivot and lower flexural pivot, and it is to roll to rub to change traditional sliding friction
It wipes, has the advantages that bear large-tonnage and friction coefficient is small；And upper and lower flexural pivot carries out assembling in factory and edits, and has structure essence
Degree height and the fast advantage of site construction.This flexural pivot when large-tonnage component rotator construction especially suitable for using.
Description of the drawings
Fig. 1 is the structural facades schematic diagram of rotator construction flexural pivot；
Fig. 2 is the upper end floor map of the lower flexural pivot of rotator construction flexural pivot；
Fig. 3 is the lower end plane schematic diagram of the upper flexural pivot of rotator construction flexural pivot；
Fig. 4 is the upper end schematic three dimensional views of the lower flexural pivot of rotator construction flexural pivot；
Fig. 5 is the lower end schematic three dimensional views of the upper flexural pivot of rotator construction flexural pivot.
Specific implementation mode
Fig. 1 shows that this large-tonnage rotator construction flexural pivot, lower 2 structure of flexural pivot are：The top surface of disk is concave arc, disk
End face center is fixed with an axis pin 6, and the disk top surface multiple concentric circles of upper edge are evenly equipped with multiple circular concaves, each round recessed
It is placed on face there are one steel ball 5, is covered with one on each steel ball 5 and opens round-meshed steel plate 7, the diameter of the circular hole thereon
Less than the diameter of steel ball 5, alternatively, the piecemeal activity more than radius of each steel ball 5 is embedded in a circular concave, and should
Opening diameter is less than 5 diameter of steel ball in the circle of circular concave, prevents steel ball from dropping out from circular concave；Upper flexural pivot
1 structure is：The diameter of disk is identical as the lower disk diameter of flexural pivot, the bottom surface of the disk be match with lower flexural pivot top surface it is outer
There are a blind hole being inserted into for 6 activity of axis pin of lower flexural pivot in convex, the disk bottom center, are provided with and correspond on the disk bottom surface
Multiple concentric circles of lower flexural pivot top surface simultaneously form a plurality of annular groove for rolling cooperation with steel ball 5.
Therefore the frame mode of steel ball and circular concave is two kinds, the first is cover-plate type（That is steel plate 7）, circle
The section configuration of shape concave surface is semicircle or large semi-circular, and the projection diameter of a circle of circular concave is slightly larger than the diameter of steel ball,
The bore dia of steel plate 7 is slightly less than 5 diameter of steel ball, and second is embedded, does not have to cover board, in second, circular concave it is disconnected
Face shape is large semi-circular, and the diameter of the large semi-circular is slightly larger than steel ball diameter.
It is used as mutually connecting firmly with bridge pier and cushion cap respectively when being fixed with construction on the top surface of upper flexural pivot 1 and the bottom surface of lower flexural pivot 2
Rod iron 3；The round-meshed steel plate 7 of opening is a monoblock steel plate for covering all steel balls 5.The adjoining of upper and lower flexural pivot 1,2
There is the outwardly extending annulus of a circle on the periphery of face respectively, the bolt hole connected for bolt 4 is evenly equipped on two annulus.Bolt hole
It it is 8, the radius of the steel ball 5 is 3cm~6cm.Upper and lower flexural pivot 1,2 is the upper and lower flexural pivot of steel.
1 lower end of upper flexural pivot is convex spherical, and lower 2 upper end of flexural pivot is concave spherical surface；Upper flexural pivot 1 carries out group with lower flexural pivot 2 in factory
Dress edits, and is fixed temporarily by 8 pairs of bolts 4, when rotator construction, temporary fixing lifting.The upper flexural pivot 1 and lower ball
Hinge 2 is made up of the rotating mechanism of flexural pivot axis pin 6；The upper flexural pivot 1 and lower flexural pivot 2 by rod iron 3 respectively with bridge pier and cushion cap
It is connected and fixed；It is contacted by steel ball 5 between the upper flexural pivot 1 and lower flexural pivot 2, is rolling friction when flexural pivot being made to rotate.
In conjunction with Fig. 2 and Fig. 4,2 upper end of lower flexural pivot is concave spherical surface, and the steel ball 5 is embedded in the recessed ball in 2 upper end of lower flexural pivot
In face, and being covered in 2 upper end of lower flexural pivot by steel plate 7 makes steel ball 5 not fall off, and steel ball can also rotate, and pass through steel ball 5
Original place rolls the purpose for making bridge realize swivel.
In conjunction with Fig. 3 and Fig. 5,1 lower end of upper flexural pivot is convex spherical, and rolling is provided for steel ball 5 when the slideway 8 is swivel
Sliding way, lower flexural pivot 2 is always stationary state in entire rotation process, and upper flexural pivot 1 is by slideway 8 with 5 slip band of steel ball
Dynamic top bridge rotation.
The present invention makes to contact using steel ball group between flexural pivot and lower flexural pivot, and it is to roll to rub to change traditional sliding friction
It wipes, has the advantages that bear large-tonnage and friction coefficient is small；And upper and lower flexural pivot carries out assembling in factory and edits, and has structure essence
Degree height and the fast advantage of site construction.
Claims (5)
1. a kind of large-tonnage rotator construction flexural pivot, which is characterized in that lower flexural pivot（2）Structure is：The top surface of disk is imploded arcs
Shape, disk end face center are fixed with an axis pin（6）, and the disk top surface multiple concentric circles of upper edge are evenly equipped with multiple circular concaves,
Steel ball there are one being placed on each circular concave（5）, each steel ball（5）On be covered with one and open round-meshed steel plate thereon
（7）, the diameter of the circular hole is less than steel ball（5）Diameter, alternatively, each steel ball（5）The piecemeal activity more than radius it is embedding
Enter in a circular concave, and opening diameter is less than steel ball in the circle of the circular concave（5）Diameter；Upper flexural pivot（1）Structure
For：The diameter of disk is identical as the lower disk diameter of flexural pivot, and the bottom surface of the disk is the outer convex arc to match with lower flexural pivot top surface
There are an axis pin for lower flexural pivot in shape, the disk bottom center（6）The blind hole that activity is inserted into is provided on the disk bottom surface under corresponding to
Multiple concentric circles of flexural pivot top surface and and steel ball（5）Form a plurality of annular groove for rolling cooperation.
2. a kind of large-tonnage rotator construction flexural pivot according to claim 1, which is characterized in that the upper flexural pivot（1）'s
Top surface and lower flexural pivot（2）Bottom surface on when being fixed with construction as the rod iron mutually connected firmly with bridge pier and cushion cap respectively（3）；It is described to open
Round-meshed steel plate（7）To cover all steel balls（5）A monoblock steel plate.
3. a kind of large-tonnage rotator construction flexural pivot according to claim 2, which is characterized in that the upper and lower flexural pivot（1、
2）Adjacent surface periphery on have the outwardly extending annulus of a circle respectively, be evenly equipped with for bolt on two annulus（4）The spiral shell of connection
Keyhole.
4. a kind of large-tonnage rotator construction flexural pivot according to claim 3, which is characterized in that the bolt hole is 8,
The steel ball（5）Radius be 3cm~6cm.
5. a kind of large-tonnage rotator construction flexural pivot according to claim 1 or 2 or 3 or 4, which is characterized in that on described,
Lower flexural pivot（1、2）For the upper and lower flexural pivot of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810714950.9A CN108660942A (en) | 2018-07-03 | 2018-07-03 | A kind of large-tonnage rotator construction flexural pivot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810714950.9A CN108660942A (en) | 2018-07-03 | 2018-07-03 | A kind of large-tonnage rotator construction flexural pivot |
Publications (1)
| Publication Number | Publication Date |
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| CN108660942A true CN108660942A (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810714950.9A Pending CN108660942A (en) | 2018-07-03 | 2018-07-03 | A kind of large-tonnage rotator construction flexural pivot |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409317A (en) * | 2019-08-16 | 2019-11-05 | 中铁十四局集团第三工程有限公司 | A kind of Rotary ball hinge and its installation method |
| CN112482244A (en) * | 2020-11-23 | 2021-03-12 | 温州方舵建筑有限公司 | Bridge rotation auxiliary supporting device |
| CN114182648A (en) * | 2021-12-23 | 2022-03-15 | 中铁十局集团第七工程有限公司 | Swivel construction spherical hinge support based on tension bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409317A (en) * | 2019-08-16 | 2019-11-05 | 中铁十四局集团第三工程有限公司 | A kind of Rotary ball hinge and its installation method |
| CN112482244A (en) * | 2020-11-23 | 2021-03-12 | 温州方舵建筑有限公司 | Bridge rotation auxiliary supporting device |
| CN114182648A (en) * | 2021-12-23 | 2022-03-15 | 中铁十局集团第七工程有限公司 | Swivel construction spherical hinge support based on tension bridge |
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