CN103243642B

CN103243642B - Rolling shaft type bridge support

Info

Publication number: CN103243642B
Application number: CN201310179888.5A
Authority: CN
Inventors: 尚守平; 雷振海
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2015-01-14
Anticipated expiration: 2033-05-15
Also published as: CN103243642A

Abstract

A rolling shaft type bridge support comprises an upper support plate, a lower support plate, an upper roller, a lower roller and a hinged shaft; the upper roller comprises two half-cylinders; sections of the half-cylinders are fixedly connected with the upper support plate; the lower roller comprises two half-cylinders; sections of the half-cylinders are fixedly connected with the lower support plate; the upper roller and the lower roller are symmetrically distributed; the hinged shaft comprises cylinder steel; and the hinged shaft which is arranged between the four half-cylinders rotates matching with the half-cylinders. The roller type bridge support has the advantages of being simple and compact in structure and low in cost; eliminating a roller shaft of the roller support, greatly improving distribution of stress and avoiding support damage caused by large contact stress of the lower support plate due to the fact that the contacting mode of the lower roller and the lower support plate is changed into surface contact from linear contact; enabling the support to be compact and stable due to the elimination of the roller shaft of the roller support and the reduction of the height of the support; and enabling the service life to be expanded due to the facts that the steel which has better durability than rubber is utilized as compression materials and rust-resistance materials are coated on the surface of every component of the bridge support to resist rust.

Description

A kind of roller shaft type bridge pad

Technical field

The present invention relates to highway, railroad bridge, particularly relate to a kind of bridge hinged steel seat.

Background technology

Bridge pad is the important feature parts connecting bridge superstructure and substructure.Bridge pad is set up on pier, the device of end face supporting bridge superstructure.Its function, for superstructure is fixed on pier, is born the various power acting on superstructure, and it is reliably passed to pier; Under load, temperature, concrete shrinkage and creep effect, bearing can adapt to corner and the displacement of superstructure, makes superstructure can Free Transform and do not produce extra additional internal force.

The bearing that the current highway bridge of China uses mainly is divided into roller support, plate bearing, rocker bearing, curved support, spherical bearing, board-like and pot rubber bearing.These bearings have unreasonable part.Roller support rotational restraint is excessive.The displacement of steel plate bearing is limited, and the supported end of beam can not freely rotate.Rocker bearing bearing capacity is high, but bearing is high, complex structure, safeguards more difficult.Curved support rotation is dumb, crab-bolt is easily cut off.Spherical bearing has not allowed any flexible in the horizontal direction, wide bridge uses and is restricted.Board-like easily aging with rubber that is pot rubber bearing, durability is not good enough.In recent years, the bridge that we find many employing pot rubber bearings is under arms in more than ten years even a few year, bearing just total necrosis or partial necrosis.Therefore, a kind of bridge pad that simultaneously can meet bearing requirement and durability is badly in need of.

Summary of the invention

The problem to be solved in the present invention is: solve existing highway bridge bearing active time short, hold flimsy problem, provide a kind of counter-force and the displacement that can adapt to bridge superstructure, long-lived bridge hinged steel seat.

The present invention solves the scheme that its technical problem adopts: a kind of roller shaft type bridge pad, comprises upper base plate and lower seat board; It also comprises top roll, lower roll, hinge; Top roll comprises two semicolumns, the affixed upper base plate in cross section of semicolumn; Lower roll comprises two semicolumns, the affixed lower seat board in cross section of semicolumn; Top roll and lower roll symmetrical; Hinge comprises a cylindrical steel, and hinge is placed in the middle of four semicolumns, rotation suitable with semicolumn.

Described bridge pad also comprises two pieces of side shields, and side shield is vertically placed between upper base plate and lower seat board, the outside of top roll and lower roll, and the affixed lower seat board in side shield bottom, bottom inside and the lower roll edge of side shield are affixed.

Described affixed mode is welding.

The all components of described bridge pad are made by steel material.

The all component surface of described bridge pad have all smeared one deck rush-resisting material.

Compared with prior art, the present invention is simple and compact for structure, with low cost; Eliminate the roll shaft of roller support, lower roll is contacted by linear contact lay face of having made into the contact form of lower seat board, substantially improves stress distribution, solve the bearing harm caused because lower seat board contact stress is large; Eliminate the roll shaft of roller support, reduce the height of bearing, make bearing compacter stable; Use steel as pressed material, compare rubber durability better, make the service life of bridge pad longer; Spread upon each component surface of bridge pad with rush-resisting material, for antirust, the application life of bridge pad can be increased.

Accompanying drawing explanation

Fig. 1 is the structural representation of the bridge pad embodiment 1 of bridge of the present invention.

Detailed description of the invention

Now by reference to the accompanying drawings and specific embodiment, the present invention will be described in detail.

Embodiment 1

With reference to accompanying drawing 1, the present embodiment comprises upper base plate 1, lower seat board 5, top roll 2, lower roll 4, hinge 3 and side shield 6.Wherein upper base plate 1 and lower seat board 5 weld together by two block plates.Top roll 2 comprises two semicolumns, and two semicolumns distribute side by side, and the cross section of semicolumn is welded on upper base plate 1; Lower roll 4 comprises two semicolumns, and two semicolumns distribute side by side, the affixed lower seat board in cross section of semicolumn; Top roll and lower roll symmetrical; Hinge is a cylindrical steel, and hinge is placed in the middle of four semicolumns, rotation suitable with semicolumn.Side shield 6 is vertically placed between upper base plate 1 and lower seat board 5, the outside of top roll 2 and lower roll 4, the affixed lower seat board 1 in side shield 6 bottom, the bottom inside of side shield 6 and lower roll 4 EDGE CONTACT.Side shield 6 can prevent hinge 3, upper base plate 1 and lower seat board 5 horizontal sliding.Hinge 3 is tangent with two semicolumns of top roll 2, lower roll 4, is realized the rotating property of bridge by the slip of cylindrical steel.

Smear pitch ointment in each component surface, pitch ointment only for antirust, does not stress, and can increase the durability that bridge pad is antirust.

More than describe preferred embodiment of the present invention in detail.Should be appreciated that the ordinary skill of this area just design according to the present invention can make many changes and modification without the need to creative work.Therefore, all technician in the art, all should in the scope of the protection determined by claim under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims

1. a roller shaft type bridge pad, comprises upper base plate and lower seat board, it is characterized in that: it also comprises top roll, lower roll, hinge; Top roll comprises two semicolumns, the affixed upper base plate in cross section of semicolumn; Lower roll comprises two semicolumns, the affixed lower seat board in cross section of semicolumn; Top roll and lower roll symmetrical; Hinge comprises a cylindrical steel, and hinge is placed in the middle of four semicolumns, rotation suitable with semicolumn.

2. a kind of roller shaft type bridge pad according to claim 1, is characterized in that: it also comprises two pieces of side shields; Described side shield is vertically placed between upper base plate and lower seat board, the outside of top roll and lower roll, the affixed lower seat board in side shield bottom.

3. a kind of roller shaft type bridge pad according to claim 2, is characterized in that: bottom inside and the lower roll of described side shield are affixed.

4. a kind of roller shaft type bridge pad according to claim 2,3 any one, is characterized in that: described affixed mode is welding.

5. a kind of roller shaft type bridge pad according to claim 1, is characterized in that: all components of described bridge pad are made by steel material.

6. a kind of roller shaft type bridge pad according to claim 1, is characterized in that, all component surface of described bridge pad have all smeared one deck rush-resisting material.