CN203021922U

CN203021922U - Sliding support point assembly

Info

Publication number: CN203021922U
Application number: CN 201220727737
Authority: CN
Inventors: 张帆; 黄建民; 何小飞; 黄永过
Original assignee: Zhengzhou Engineering Co Ltd of China Railway Seventh Group Co Ltd
Current assignee: Zhengzhou Engineering Co Ltd of China Railway Seventh Group Co Ltd
Priority date: 2012-12-26
Filing date: 2012-12-26
Publication date: 2013-06-26
Anticipated expiration: 2022-12-26

Abstract

The utility model discloses a sliding support point assembly, comprising lower track panels and upper track panels, the both of which are arranged between the top surface of a box bridge and a transverse lift beam, wherein the upper track panels are fixed under the transverse lift beam orderly by U-shaped bolts and angle irons along the cross section direction of the railway at intervals; the lower track sections are connected end to end by track sections in the jacking direction of the box bridge and are arranged on the top of the box bridge; and the contact surfaces of tracks of the upper and lower track panels are coated with lubricating layers, so that the upper and lower track panels are in sliding connection with each other. The sliding support point assembly has the advantages of being composed of the upper track panels and the lower track panels and adopted in the box bridge jacking construction and being capable of immediately substituting a temporary support point pile to be removed, so that the flexibility of a longitudinal beam is effectively reduced and the stress performance of a line overhead system is guaranteed, the sliding friction coefficient between the track panels is small and the transverse thrust to a line during box bridge jacking is eliminated, and the sliding support point assembly is low in weight and convenient to mount and demount, so that the number of operating personnel and the operating time are reduced, the construction period is shortened and the cost is saved.

Description

The sliding fulcrum assembly

Technical field

The utility model relates to built on stilts reinforcing of lower rail wear jacking wide-span case bridge construction circuit and uses standard package, especially relates to built on stilts reinforcing of a kind of lower rail wear jacking wide-span case bridge construction circuit and uses the sliding fulcrum assembly.

Background technology

Sliding fulcrum is various informative, the existing extensive application in case bridge jacking construction, but the shortcoming such as ubiquity equipment is heavy, installs, remove difficulty, and operation is inconvenient, fall flat.fast development along with China railways " flat change vertical " engineering construction and various places urban construction, wear both wired construction of the flyovers under often can running into, overpass bridge not only aperture is large, hole count is many, circuit becomes the oblique state with case bridge center line and build again busy main line in or multiply road, field, station, under track switch group or curve, simultaneously railway interests also require must not be lower than 45km/h at the basic up train speed limit of guaranteeing traffic safety, use original sliding fulcrum according to traditional construction experience, not only having increased the operating personnel carries out the horizontal beam of lifting and props up pad, and workload and the frequency of line maintenance have been strengthened.

Summary of the invention

The purpose of this utility model is to provide that a kind of weight is light, peace is torn open is convenient, easy to use, support reliable sliding fulcrum assembly.

For achieving the above object, the utility model can be taked following technical proposals:

Sliding fulcrum assembly described in the utility model, it comprises and is arranged on case bridge end face and the horizontal lower section of track and the upper section of track of lifting between beam, the described upper section of track is intervally fixed on the horizontal beam below of lifting along the Railway Cross Section direction by U-bolt and angle bar; The described lower section of track is arranged in case bridge top by section of track joint along case bridge jacking direction headtotail; Be slidably connected between making both scribbling lubricating layer on the track contact surface of the described upper and lower section of track.

The section of track joint of the described upper section of track and the lower section of track is welded on the two-layered steel plates composition of described rail head of rail, the flange of rail by two light rails and interval.

Under described formation, the rear end of the front section of track joint from beginning to end of the section of track is than the high 2-3mm of front end of rear section of track joint.

The utility model has the advantage of that the sliding fulcrum assembly that adopts the up and down section of track to consist of can in time replace the interim fulcrum stake that is about to cut in case bridge jacking construction, effectively reduced the longeron amount of deflection, guaranteed the stress performance of the built on stilts system of circuit; Between two sections of track, the coefficient of sliding friction is minimum, when having eliminated the jacking of case bridge to the lateral thrust of circuit; Sliding fulcrum assembly relative weight is lighter, and peace is torn open conveniently, reduces operating personnel and operating time, the reduction of erection time, saves cost.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.

Fig. 3 is the structural representation of the upper section of track in Fig. 1.

Fig. 4 is the structural representation of the lower section of track in Fig. 1.

The specific embodiment

As shown in Fig. 1,2,3,4, sliding fulcrum assembly described in the utility model, it comprises and is arranged on case bridge 1 end face and the horizontal lower section of track 3 and the upper section of track 4 of lifting between beam 2, and the upper section of track 4 is intervally fixed on horizontal beam 2 belows of lifting along the Railway Cross Section direction by U-bolt 5 and angle bar 6; The lower section of track 3 is arranged in case bridge 1 top by section of track joint along case bridge 1 jacking direction headtotail, and the laying length of the lower section of track 3 and case bridge 1 are elongated, and load passes to the upper section of track 4 and then passes to the lower section of track 3 by the horizontal beam 2 of lifting; Scribble on the track contact surface of the upper section of track 4 and the lower section of track 3 lubricating layer make both between non-resistance slide; The upper section of track 4 used and the section of track of the lower section of track 3 joint are welded on the two-layered steel plates composition of described rail head of rail, the flange of rail by two light rails and interval; Be the smooth jacking of guard box bridge 1, under consisting of, the rear end of the front section of track joint from beginning to end of the section of track 3 is than the high 2-3mm of front end of rear section of track joint.In case bridge 1 jack-in process, the upper section of track 4 is fixed on that horizontal to lift 2 times maintenances of beam motionless, the lower section of track 3 moves forward with the upper section of track 4 with case bridge 1 relative sliding occurs, scribble lubricated butter between the track contact surface of the upper section of track 4 and the lower section of track 3, because the coefficient of sliding friction of 3 of the upper section of track 4 and the lower sections of track is minimum, when having eliminated 1 jacking of case bridge to the lateral thrust of circuit; Effectively reduce the amount of deflection of longeron 7, guaranteed the stress performance of the built on stilts system of circuit.

Claims

1. sliding fulcrum assembly, it is characterized in that: it comprises and is arranged on case bridge (1) end face and the horizontal lower section of track (3) and the upper section of track (4) of lifting between beam (2), and the described upper section of track (4) is intervally fixed on horizontal beam (2) below of lifting along the Railway Cross Section direction by U-bolt (5) and angle bar (6); The described lower section of track (3) is arranged in case bridge (1) top by section of track joint along case bridge (1) jacking direction headtotail; Be slidably connected between making both scribbling lubricating layer on the track contact surface of the described upper and lower section of track (4,3).

2. sliding fulcrum assembly according to claim 1 is characterized in that: the section of track joint of the described upper section of track (4) and the lower section of track (3) forms by the two-layered steel plates that two light rails and interval are welded on described rail head of rail, the flange of rail.

3. sliding fulcrum assembly according to claim 1 and 2, is characterized in that: the high 2-3mm of front end that the rear end of the front section of track joint from beginning to end of the section of track under described formation (3) is saved than the rear section of track.