CN202099725U

CN202099725U - Connection mechanism of girder and pivot shaft of vertical rotation movable bridge

Info

Publication number: CN202099725U
Application number: CN2011201831945U
Authority: CN
Inventors: 刘旭锴; 张洪海; 谢宝来; 曹景; 刘志才; 李强; 赵传亮; 杨金虎
Original assignee: Tianjin Municipal Engineering Design and Research Institute
Current assignee: Tianjin Municipal Engineering Design and Research Institute
Priority date: 2011-06-02
Filing date: 2011-06-02
Publication date: 2012-01-04
Anticipated expiration: 2021-06-02

Abstract

The utility model discloses a connection mechanism of a girder and a pivot shaft of a vertical rotation movable bridge. The connection structure comprises a girder, a pivot shaft and a connection structure. The girder is provided with a pivot shaft installment hole, and the girder is in a steel box girder structure comprising steel box girder double webs and a plurality of reinforcing blades radially distributed with the pivot shaft installment hall as the center. The connection structure comprises a steel ring arranged between the pivot shaft installment hole and the pivot shaft. The steel ring is fixed in the pivot shaft installment hole, an annular clearance is arranged between the steel ring and the pivot shaft, a composite ring is arranged in the annular clearance, the composite ring consists of an adjusting bolt, an outer ring and an inner ring, the outer ring and inner ring are embedded and in conical surface contact, the adjusting bolt penetrates the outer ring and the inner ring, an end cover is arranged on one side of the steel ring located at a shaft end of the pivot shaft, and the other end of the steel ring is provided with a sealing structure. Transmission principles of loads between the pivot shaft and a steel box girder are thoroughly altered. The connection mechanism has a lower demand for accuracy of installment and meanwhile can bear loads of various directions, thereby being reliable in bearing.

Description

The joint construction of a kind of vertical transfer movable bridge girder and pivot

Technical field

The utility model relates to the joint construction in a kind of bridge, relates in particular to the joint construction of a kind of vertical transfer movable bridge middle girder and pivot.

Background technology

Movable bridge is meant and is navigation needs, the bridge of mode foldings such as superstructure can be revolved perpendicularly to revolve, to put down, lifting.Busy when land transport, ship's navigation is arranged on the river and fixed bridge can not be built in navigational clearance when above, just need to build movable bridge, thereby to solve land and water transportation.

Movable bridge commonly used has: 1. vertical transfer bridge.The bridge of the rotatable folding on facade of the bridge span structure above the navigation channel.From the whole title list leaf formula vertical transfer bridge of striding bascule of an end folding; Folding is divided into the title double-valve type vertical transfer bridge of two parts bascule from two ends.Bascule is provided with mechanical device and electrical equipments such as hinge and balance weight.2. lift bridge.The spanning of navigation part is made liftable structure, and respectively there is a pylon at the movable bridge two ends, places with mechanical, electrical device and balance weight.3. swing bridge.Bridge span structure is around the movable bridge of a vertical pivot rotation.The upright commentaries on classics and the movable bridge of flatting turn all can relate to the connectivity problem of girder and pivot.Main two kinds of conventional method of attachment, the one, with steel girder web and put more energy into blade and the welding of pivot full penetration, the 2nd, welding one steel loop is processed keyway on steel loop and pivot on the steel girder web and the blade of putting more energy into, employing key link technique.Because the girder web and the blade steel plate thickness of putting more energy into are generally bigger, and the general solderability of the used steel of pivot is relatively poor, the welding difficulty is big, and welding residual stress is restive.Adopt key to connect and avoided Welding Problems to a certain extent, but processing and quality of fit requirement are very high, and keyway stress concentration phenomenon is more serious, easy fatigue is destroyed.

The utility model content

To above-mentioned prior art; The utility model provides the joint construction of a kind of vertical transfer movable bridge girder and pivot; Fundamentally changed the transfer principle of load between pivot and the steel case beam; This joint construction reduces the requirement of installation accuracy relatively, can bear the load of all directions simultaneously, and is stressed reliable.

In order to solve the problem of existing method of attachment; The technical scheme that the joint construction of the utility model vertical transfer movable bridge girder and pivot is achieved is; This joint construction comprises girder, pivot, syndeton and hermetically-sealed construction; Said girder is provided with the pivotal mounting hole, and said girder is the steel box-beam structure, and said steel box-beam structure comprises the two webs of steel case beam and is multi-disc that the center the is radial arrangement blade of putting more energy into said pivotal mounting hole; Said syndeton comprises the steel loop that is arranged between said pivotal mounting hole and the pivot; Said steel loop is fixed in the said pivotal mounting hole; Be provided with a circle annular space between said steel loop and the said pivot, shown in be provided with a complex loop in the annular space, said complex loop constitutes with the outer shroud and the interior ring that nest together by tightening bolt; Said outer shroud with said in the ring between for the conical surface contacts, the said bolt that tightens passes said outer shroud and interior ring; Said steel loop is provided with end cap on the axle head that is positioned at pivot one side, the other end of said steel loop is provided with hermetically-sealed construction.

The utility model vertical transfer movable bridge girder and pivotal connection structure, wherein, between said steel loop and the said girder pair webs, said steel loop and multi-disc put more energy into and all be welded to connect between the blade.

Compared with prior art the utlity model has following beneficial effect:

Adopt the utility model joint construction, no thick plates has been avoided the excessive problem of welding residual stress, has reduced difficulty of construction and construction risk; On girder and pivot, all need not process keyway, can improve the intensity of girder and pivot, reduce stress raiser; Can bear time dependent loading and impact load, endurance life is high, and can bear certain axial force; Processing and quality of fit to pivot and girder web, steel loop etc. require to reduce relatively, are convenient to processing and manufacturing, are particularly useful for the civil engineering class formation; Syndeton interchangeability and adjustability between pivot and the girder are good; Syndeton centering is easy to dismounting easily, and operation and maintenance is convenient, and expense lowers; This joint construction has overload protection function.

Description of drawings

Fig. 1 is the utility model vertical transfer movable bridge girder and pivotal connection structure elevation;

Fig. 2 is the utility model vertical transfer movable bridge girder and pivotal connection structure profile diagram;

Fig. 3 is the utility model vertical transfer movable bridge girder and pivotal connection structure facade partial enlarged drawing;

Among the figure:

1---pivot 2---web

3---blade 31 of putting more energy into---steel loop

32---end caps 33---pass through lid

The interior ring of 41---tightening bolt 42---

43---outer shroud

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done to describe in further detail.

As depicted in figs. 1 and 2, the utility model a kind of vertical transfer movable bridge girder and pivotal connection structure comprise girder, pivot 1, syndeton and hermetically-sealed construction, on the said bearing support that is pivotally mounted on the bridge pier, as the turning cylinder of vertical transfer; Said girder is the steel box-beam structure, and the closely spaced thick pair of web participated in joint construction on the girder, and said steel box-beam structure comprises the two webs 2 of steel case beam and is multi-disc that the center the is radial arrangement blade 3 of putting more energy into said pivotal mounting hole; Said girder is provided with the pivotal mounting hole; Said syndeton comprises the steel loop 31 that is arranged between said pivotal mounting hole and the pivot 1, and said steel loop 31 is fixed in the said pivotal mounting hole, between the two webs 2 of said steel loop 31 and said girder, said steel loop 31 and multi-disc put more energy into and all be welded to connect between the blade 3; As shown in Figure 3; Be provided with a circle annular space between said steel loop 31 and the said pivot 1, shown in be provided with a complex loop in the annular space, said complex loop constitutes with outer shroud that nests together 43 and interior ring 42 by tightening bolt 41; Said outer shroud 43 with said between the ring 42 for the conical surface contacts, the said bolt 41 that tightens passes said outer shroud 43 and interior ring 42; As shown in Figure 2, a plurality of said blades 3 and tighten bolt 41 and circumferentially be symmetric arrangement of putting more energy into along pivot.Said steel loop 31 is provided with end cap 32 on the axle head that is positioned at pivot 1 one side, the other end of said steel loop 31 is provided with hermetically-sealed construction.Said hermetically-sealed construction comprise have sealing mat and a felt collar cover 33 thoroughly.

Like Fig. 1, the utility model realizes that being connected between vertical transfer movable bridge girder and the pivot is to utilize the syndeton between steel case web 2 and the pivot 1 to carry out load transfer, and employing end cap and hermetically-sealed construction carry out seal protection.Pivot 1 can adopt the 40CrNi3Mu material, and the maximum characteristics of these steel are that hardness is high, and anti-fatigue performance is good, and solderability is poor.The operating principle of the utility model joint construction is to tighten bolt 41 through tightening; Interior ring 42 and outer shroud 43 receive axial clamping force; Under the conical surface effect between the two; All produce bigger pressure between interior ring 42 and pivot 1, outer shroud 43 and the steel loop 31, thereby under function of friction, realize the transmission of load; The two ends of this joint construction are provided with end cap and the lid that passes through that has hermetically-sealed construction, thereby play the effect of protection pivot 1 and syndeton, are connected through bolt between end cap, hermetically-sealed construction and the steel loop.

The technology that realizes the utility model joint construction is: install steel case beam (comprising 2 and 3) and steel loop 31 earlier; Pivot 1 is installed then, and installation process requires steel loop 31 and pivot 1 arranged concentric; Progressively tighten and tighten bolt 41; Ring 42 and outer shroud 43 in axial force just is applied to, under the conical surface effect between interior ring 42 and the outer shroud 43, interior ring 42 is to pivot 1 direction elastic deformation; Outer shroud 43 is to steel loop 31 direction elastic deformations; Under function of friction pivot 1, interior ring 42, outer shroud 43 and steel loop 31 bandings together, thereby form an integral body, realize to transmit load; Tighten tighten bolt 41 after, end cap 32 is installed and is covered 33 thoroughly, end cap 32 and cover thoroughly 33 with steel loop 31 between sealing mat and felt collar are arranged, play sealing and protective effect.When syndeton is transshipped, produce relatively between pivot 1 and interior ring 42, steel loop 31 and the outer shroud 43 and slide, thereby protected syndeton, prevented to cause the unexpected destruction of syndeton because of overload.

Although top combination figure is described the utility model; But the utility model is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Under the situation that does not break away from the utility model aim, can also make a lot of distortion, these all belong within the protection of the utility model.

Claims

1. vertical transfer movable bridge girder and pivotal connection structure; Comprise girder, pivot (1), syndeton and hermetically-sealed construction; Said girder is provided with the pivotal mounting hole; Said girder is the steel box-beam structure, and said steel box-beam structure comprises the two webs (2) of steel case beam and is multi-disc that the center the is radial arrangement blade (3) of putting more energy into said pivotal mounting hole; It is characterized in that:

Said syndeton comprises the steel loop (31) that is arranged between said pivotal mounting hole and the pivot (1); Said steel loop (31) is fixed in the said pivotal mounting hole; Be provided with a circle annular space between said steel loop (31) and the said pivot (1); Shown in be provided with a complex loop in the annular space; Said complex loop is made up of the outer shroud (43) that tightens bolt (41) and nest together and interior ring (42), said outer shroud (43) with said in encircle between (42) to the conical surface contacts, the said bolt (41) that tightens passes said outer shroud (43) and interior ring (42); Said steel loop (31) is provided with end cap (32) being positioned on axle head one side of pivot (1), and the other end of said steel loop (31) is provided with hermetically-sealed construction.

2. vertical transfer movable bridge girder according to claim 1 and pivotal connection structure is characterized in that: between said steel loop (31) and the said girder pair webs (2), said steel loop (31) and multi-disc put more energy into and all be welded to connect between the blade (3).

3. according to claim 1 said vertical transfer movable bridge girder and pivotal connection structure, it is characterized in that a plurality of said blades of putting more energy into (3) and tighten bolt (41) and circumferentially be symmetric arrangement along pivot.