CN102720131A

CN102720131A - Rear propulsion cradle

Info

Publication number: CN102720131A
Application number: CN2011100797674A
Authority: CN
Inventors: 周仲武; 王雷鸣
Original assignee: NRS JIANGSU MACHINERY AND HEAVY INDUSTRY Co Ltd
Current assignee: NRS JIANGSU MACHINERY AND HEAVY INDUSTRY Co Ltd
Priority date: 2011-03-31
Filing date: 2011-03-31
Publication date: 2012-10-10
Anticipated expiration: 2031-03-31
Also published as: CN102720131B

Abstract

The invention discloses a rear propulsion cradle. The rear propulsion cradle comprises a main girder, lifting cases, lifting bars, cross beams, a pulley and a pair of horn beams, wherein the main girder is transversely arranged on a bridge web, the lifting cases are vertically and symmetrically arranged at two ends of the main girder, the lifting bars are arranged on the main girder symmetrically, the cross beam is connected at the bottoms of the lifting cases and the lifting bars, the pulley is hung at the bottom of the cross beam, the pair of horn beams are symmetrically arranged at two sides of the middle of the main girder along the longitudinal direction, a main frame is connected at the bottom of the pulley, therefore, when the main frame moves longitudinally, the pulley firstly drives the main frame to open towards two sides, then the main frame moves longitudinally, and the rear propulsion cradle plays a role of a stable supporting point, thus the construction cost is low and the operation is simple.

Description

A kind of back advances suspension bracket

Technical field

The present invention relates to the back and advance suspension bracket

Background technology

In the bridge construction, stride after bridge cast finishes when one, need the bridge place be striden in the main frame vertical shift to next; So that carry out the cast that next strides bridge; Prior art is a kind of for the carriage to the stable support effect of main frame is set at least three continuous bridge piers, and main frame is opened and after vertical shift strode bridge to next, first carriage had promptly lost the effect of support to both sides; Remove first carriage this moment; Prior art is another kind of to comprise on the ground a supporting mechanism of bottom, the carriage on continuous two bridge piers for three high strong points such as setting gradually, and after main frame is opened and vertical shift strides bridge to next, takes supporting mechanism away; Construction cost is higher like this, and operation is comparatively complicated

Summary of the invention

the purpose of this invention is to provide construction cost a kind of back low, simple to operate and advance suspension bracket.

are for achieving the above object; The present invention provides a kind of back to advance suspension bracket; Comprise the passive girder, a pair of box that is arranged on said girder both ends that are horizontally installed on bridge web top, be connected to the pair of beams of said a pair of box bottom, be suspended on the coaster that said pair of beams bottom can laterally be moved along said pair of beams respectively; Said pair of beams is parallel to said girder setting, the coaxial setting of said pair of beams, and the outer end of said pair of beams exceeds said girder both ends in the horizontal direction; The inner end of said pair of beams is pressed close to said bridge web; Said a pair of box vertically is arranged on said bridge web outside, and the top of said a pair of box is connected the bottom at said girder two ends, and the bottom of said a pair of box connects said pair of beams; Bilateral symmetry must be provided with a pair of suspension rod on said girder; Said suspension rod vertically passes said girder and said bridge web, and said suspension rod top connects said girder, and the bottom is connected on the said crossbeam near said inner end place.

preferably; At said bridge web top a pair of support is set; Said a pair of support withstands on and is symmetricly set on both sides, said girder middle part on the longitudinal direction; Be provided for stablizing the ox horn beam of said girder at the top of said support, said ox horn back portion pushes against in said girder side, and the bottom is fixed on said the support.

because technique scheme is used, the present invention compared with prior art has advantage and effect: the passive girder of horizontally set above the bridge web is provided with box and suspension rod respectively at the girder two ends; Box and suspension rod bottom is connected crossbeam, the coaster that suspension setting can be moved along crossbeam on crossbeam, and coaster connects the main frame of bridge construction use down; Like this when the main frame vertical shift; Coaster at first drives main frame and opens to both sides, main frame vertical shift then, at this moment; The back advances suspension bracket to play the effect of a strong point; Use back of the present invention to advance suspension bracket can accomplish the vertical shift of main frame like this, construction cost is lower, and is simple to operate.

Description of drawings:

Accompanying drawing 1 is looked sketch map for master of the present invention;

Accompanying drawing 2 is a schematic side view of the present invention;

The specific embodiment:

Referring to shown in Figure 1, girder 1 crosswise fixed of steel box-beam structure is arranged on the bridge web 6 , is symmetrical set the vertical box 3 that is welded as a whole with girder 1 at girder 1 both ends; Box 3 is positioned at the outside of bridge web 6; On girder 1, be symmetrical set vertical suspension rod 2 in addition, suspension rod 2 is positioned at the inboard of box 3, and suspension rod 2 passes bridge web 6; Be connected with the crossbeam 4 that lays respectively at bridge web 6 both sides external of symmetry through bolt connecting mode in box 3 and suspension rod 2 bottoms; Crossbeam 4 is parallel to girder 1, and the outer end of crossbeam 4 exceeds the both ends of girder 1 in the horizontal direction, uses for the workman and walks; The inner end of crossbeam 4 is pressed close to bridge web 6 and is provided with; Setting is suspended on the coaster 5 that can move along crossbeam 4 in the bottom of crossbeam 4, the main frame of 5 times suspensions of coaster bridge construction, main frame can follow coaster 5 motion and separately or close up.

Referring to shown in Figure 2; At the top of bridge web 6 a pair of support 8 is set along the longitudinal direction; A pair of support 8 is symmetricly set on the both sides, middle part of girder 1, and the ox horn beam 7 of stable girder 1 effect has been set at a pair of support 8 tops, and the bottom of ox horn beam 7 is fixed on the support 8; The welded top of ox horn beam 7 is on girder 1 middle part and push against girder 1; Ox horn beam 7 can guarantee that back of the present invention advances suspension bracket stability in a longitudinal direction, and when the main frame vertical shift, back of the present invention advances suspension bracket can play the effect of a stable strong point

Claims

1. advance suspension bracket after one kind; Comprise the passive girder, a pair of box that is arranged on said girder both ends that are horizontally installed on bridge web top, be connected to the pair of beams of said a pair of box bottom, be suspended on the coaster that said pair of beams bottom can laterally be moved along said pair of beams respectively; It is characterized in that: said pair of beams is parallel to said girder setting, the coaxial setting of said pair of beams, and the outer end of said pair of beams exceeds said girder both ends in the horizontal direction; The inner end of said pair of beams is pressed close to said bridge web; Said a pair of box vertically is arranged on said bridge web outside, and the top of said a pair of box is connected the bottom at said girder two ends, and the bottom of said a pair of box connects said pair of beams; Bilateral symmetry must be provided with a pair of suspension rod on said girder; Said suspension rod vertically passes said girder and said bridge web, and said suspension rod top connects said girder, and the bottom is connected on the said crossbeam near said inner end place.

2. back according to claim 1 advances suspension bracket; It is characterized in that: a pair of support is set at said bridge web top; Said a pair of support withstands on and is symmetricly set on both sides, said girder middle part on the longitudinal direction; Be provided for stablizing the ox horn beam of said girder at the top of said support, said ox horn back portion pushes against in said girder side, and the bottom is fixed on said the support.