CN103541309B - A kind of lower nose girder walking bridging machine is turned back telescopic cantilever girder system system - Google Patents
A kind of lower nose girder walking bridging machine is turned back telescopic cantilever girder system system Download PDFInfo
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- CN103541309B CN103541309B CN201310535052.4A CN201310535052A CN103541309B CN 103541309 B CN103541309 B CN 103541309B CN 201310535052 A CN201310535052 A CN 201310535052A CN 103541309 B CN103541309 B CN 103541309B
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Abstract
The open a kind of lower nose girder walking bridging machine of the present invention is turned back telescopic cantilever girder system system, this system comprises girder, semi girder, semi girder crossbeam, alignment pin, Bridge Erector auxiliary leg, connecting rod, junction plate, branch sleeve and movable motor, and described girder and semi girder are linked together by connecting rod, junction plate or branch sleeve; Described alignment pin is positioned at the downside of girder, and semi girder crossbeam is positioned on semi girder; Described Bridge Erector auxiliary leg is positioned at below girder, and drives with movable motor and be connected.Apply the Bridge Erector of this system, the contraction process of its semi girder do not need length of cantilever distance upwards or outside turn back, only need overall to after-contraction; Semi girder is in contraction process, and time is carved with auxiliary leg and supports it and move to girder, and the semi girder avoided under great cantilever state carries out fallback action, and safety factor is higher.
Description
Technical field
The present invention relates to a kind of bridge support equipment, specifically a kind of lower nose girder walking bridging machine is turned back telescopic cantilever girder system system, is applicable to erection high-speed railway bridge etc.
Background technology
In recent ten years along with the develop rapidly of China railways Line for Passenger Transportation and high speed railway construction, the Bridge Erector of Multiple Type is had to come into operation, and the pattern overwhelming majority of these Bridge Erectors adopts lower nose girder walking structure, and there are some problems during last hole in the lower nose girder walking bridging machine with semi girder before setting up tunnel.
According to the railway network planning that China formulates for 2008, area, Southwest Mountainous Areas wants Developing High-speed or speed rail net equally.According to statistics, these circuit bridge tunnel proportions account for 75%-80% completely, are Bridge-wire fusing time substantially.When setting up last hole then, because the semi girder of Bridge Erector complete machine is too high, cannot extend in tunnel, often need with crane gear, the semi girder be fixedly installed to be removed, but because the job site at tunnel face place limits, crane gear even cannot use sometimes, namely allows to take crane gear to dismantle, and its construction period is also longer.
In order to overcome the problems referred to above, someone investigated folding semi girder and semi girder Bridge Erector of turning back, but these semi girders shortcomings such as to there is intensity too low, operation inconvenience.
Summary of the invention
For the deficiencies in the prior art, the technical problem that quasi-solution of the present invention is determined is: provide a kind of lower nose girder walking bridging machine to turn back telescopic cantilever girder system system.The erection of this performance benefits last bridge before railway erection tunnel, enables the Bridge Erector semi girder that this system is housed realize contraction of turning back, reduces Bridge Erector size, reduce the requirement of Bridge Erector to construction environment.
The technical scheme that the present invention solve the technical problem is: the reflexibie telescopic cantilever girder system system of a kind of lower nose girder walking bridging machine of design, comprise girder, semi girder, semi girder crossbeam, alignment pin, Bridge Erector auxiliary leg, connecting rod, junction plate, branch sleeve and movable motor, described girder and semi girder are linked together by connecting rod, junction plate or branch sleeve; Described alignment pin is positioned at the downside of girder, and semi girder crossbeam is positioned on semi girder; Described Bridge Erector auxiliary leg is positioned at below girder, and drives with movable motor and be connected; It is characterized in that: the pulley belt be made up of roller by a section outside described girder, inside girder and semi girder connecting portion, have a turning cylinder, described turning cylinder is welded on girder; Slideway is had inside described semi girder; Described semi girder inner track is a long i iron, and i iron one end is welded with Bridge Erector semi girder side; Described girder and semi girder link are inclined-plane;
Described semi girder crossbeam is three-stage structure, and comprise left reflexibie section, right reflexibie section and interlude, interlude is not reflexibie; Described semi girder crossbeam is provided with prefabricated bolt hole bottom luffing hydraulic cylinder, inner side steel pin, outside steel pin, inner side otic placode, outside otic placode and semi girder crossbeam, and all parts are symmetrical; Its left and right reflexibie section all there is an outside steel pin and outside otic placode, for the two ends of connecting cantilever beam crossbeam and semi girder; All there are an inner side steel pin and inner side otic placode in the both sides of semi girder crossbeam interlude, for the interlude of connecting cantilever beam crossbeam and left and right reflexibie section;
Described branch sleeve is the rectangular shape lacking upper and lower surface of hollow, and inner side is provided with is convenient to the chute of semi girder in branch sleeve inner slide, comprises turning cylinder and sleeve; Described turning cylinder is vertically welded on girder and semi girder link position; Described sleeve weld is on semi girder turning cylinder;
Described semi girder lower end is connected with girder by semi girder connecting rod, under normal erected state, described semi girder and girder are fastenedly connected by junction plate; And when before setting up tunnel, last hole needs to shrink semi girder, dismantle girder and semi girder junction plate, be at this moment only connected with girder by connecting rod, connecting rod is driven in semi girder leading portion device for opening; Meanwhile, when semi girder is opened, the rotation anchor point of connecting rod is provided with alignment pin; Described alignment pin is welded in the bottom surface of girder, is positioned at the right side of connecting rod; Described connecting rod is connecting cantilever beam and girder in semi girder crossbeam turns back opening procedure; Described connecting rod two ends are equipped with axis hole, are connected respectively with the turning cylinder on the turning cylinder of girder medial surface and the branch sleeve of semi girder side, and on the downside of semi girder opening procedure middle girder, alignment pin limits position, ensure that connecting rod arrives accurate location;
Described Bridge Erector auxiliary leg is when general erected state, and its upper end is connected by bolt flange and girder crossbeam; When before Bridge Erector is satisfied, last aperture frame is established, after being advanced into tunnel before lower nose girder, pull down Bridge Erector auxiliary leg upper end bolt flange, under movable motor drives, auxiliary leg proceeds to below reflexibie semi girder crossbeam, with prepared screw-bolt hole bolt below bolt and semi girder crossbeam, realize the connection of auxiliary leg and semi girder crossbeam.
Compared with prior art, the invention has the beneficial effects as follows:
1. easy to operate, improve efficiency of construction; Cantilever beam section open under luffing Hydraulic Cylinder on semi girder crossbeam become across, auxiliary leg promotes semi girder and runs to girder direction under movable motor drives, this process does not need to carry out dismounting to semi girder can carry out last hole erection then, can recover voluntarily by inverse process after erection, easy to operate, substantially increase efficiency of construction;
2. reduce construction cost; Whole process does not need to carry out auxiliary operation by large-scale external auxiliary equipment such as cranes, reduces construction cost.
3. safety factor is high; This process do not need length of cantilever distance upwards or outside turn back, only need overall to after-contraction, semi girder is in contraction process, and time is carved with auxiliary leg and supports it and move to girder, the semi girder avoided under great cantilever state carries out fallback action, and safety factor is higher.
4. shorten the work period.Whole process does not need to remove semi girder, does not need to carry out auxiliary operation by extraneous main equipment, reduces the participation of people, saves manpower and shortens the work period.
Accompanying drawing explanation
Under Fig. 1 the present invention, nose girder walking bridging machine is turned back the overall structure schematic diagram of telescopic cantilever girder system unified kind of embodiment;
Fig. 2 is that the semi girder of a kind of embodiment of cantilever beam system of the present invention is opened change and striden across journey structure principle chart, wherein, Fig. 2 (A) opens for semi girder and becomes across process schematic, and Fig. 2 (B) is connecting rod branch sleeve position A-A broken section structural representation;
Fig. 3 is that the cantilever beam system of a kind of embodiment of cantilever beam system of the present invention shrinks the figure that is near completion;
Fig. 4 is the semi girder crossbeam full open position structural representation of a kind of embodiment of cantilever beam system of the present invention;
Fig. 5 is the semi girder crossbeam top view of a kind of embodiment of cantilever beam system of the present invention;
Fig. 6 is the semi girder contraction process figure of a kind of embodiment of cantilever beam system of the present invention, Fig. 6 (A) is front preparation schematic diagram, and Fig. 6 (B) is schematic diagram in contraction, and Fig. 6 (C) is final position schematic diagram;
Fig. 7 is the view that the Bridge Erector of a kind of embodiment of cantilever beam system of the present invention shrinks that semi girder sets up last hole, wherein, the view of Bridge Erector before Fig. 7 (A) erection, the view of Bridge Erector when Fig. 7 (B) is erection.
Detailed description of the invention
Describe the present invention further below in conjunction with specific embodiment and accompanying drawing thereof, specific embodiment, only for further describing the present invention, does not limit the protection domain of the claims in the present invention.
The reflexibie telescopic cantilever girder system system (being called for short system, see Fig. 1-7) of lower nose girder walking bridging machine of the present invention's design comprises girder 1, semi girder 2, semi girder crossbeam 3, alignment pin 4, Bridge Erector auxiliary leg 5, connecting rod 6, junction plate 7, branch sleeve 8 and movable motor 9; Described girder 1 is linked together by connecting rod 6, junction plate 7 or branch sleeve 8 with semi girder 2; Described alignment pin 4 is positioned at the downside of girder, and semi girder crossbeam 3 is positioned on semi girder 2; Described Bridge Erector auxiliary leg 5 is positioned at below girder 1, and drives with movable motor 9 and be connected; It is characterized in that: have roller 1.1 outside described girder 1, inside girder 1 with semi girder connecting portion, have a turning cylinder 1.2, turning cylinder 1.2 is welded on girder 1; Slideway 2.1 is had inside described semi girder 2; Set up the pulley belt of a segment length about 20 meters outside described girder 1 beam body two, described pulley belt is made up of roller 1.1, slides along two side rollers to realize shrinking at semi girder 2 or recovering semi girder inner track 2.1 in opening procedure; Described semi girder inner track 2.1 is long (embodiment is 1 meter) i iron, and i iron one end is welded with the side of Bridge Erector semi girder 2; Described girder 1 and semi girder 2 link beveling, so that semi girder 2 can be turned back directly to girder 1 direction, and do not need first to turn back forward.
Described semi girder crossbeam 3 is three-stage structure, and comprise reflexibie section 3.01, a left side, right reflexibie end 3.02 and interlude 3.03, interlude 3.03 is not reflexibie; Described semi girder crossbeam 3 is provided with luffing hydraulic cylinder 3.04, inner side steel pin 3.05, outside steel pin 3.06, inner side otic placode 3.07, outside otic placode 3.08 and semi girder crossbeam bottom bolts hole 3.09, and all parts are symmetrical; Its left and right reflexibie section all there are an outside steel pin 3.06 and outside otic placode 3.08, for the two ends of connecting cantilever beam crossbeam 3 with semi girder 2; All there are an inner side steel pin 3.05 and inner side otic placode 3.07 in the both sides of semi girder crossbeam interlude 3.03, for the interlude of connecting cantilever beam crossbeam 3 and left and right reflexibie section.Left and right reflexibie section 3.01 of semi girder crossbeam, 3.02 is equipped with a luffing hydraulic cylinder 3.04 be connected with semi girder crossbeam interlude 3.03, realizes the horizontal span change that semi girder 2 is opened and regained.
Described branch sleeve 8 is rectangular shapes lacking upper and lower surface of hollow, and inner side is provided with chute so that semi girder is in sleeve inner slide, comprises turning cylinder 8.1 and sleeve 8.2; Described turning cylinder 8.1 is vertically welded on girder 1 and semi girder 2 link position; Described sleeve 8.2 is welded on semi girder turning cylinder 8.1, to ensure that semi girder 2 can slide by relative girder in sleeve.When Bridge Erector normal operation, semi girder is connected by junction plate 7 with the side of girder connecting portion, and branch sleeve 8 does not work; Stretch in opening procedure at semi girder, need to unload lower connecting plate 7, now branch sleeve 8 works.
Described semi girder 2 lower end is connected with girder 1 by semi girder connecting rod 6, and under normal erected state, described semi girder 2 is fastenedly connected by junction plate 7 with girder 1, avoids the connecting rod 6 connecting girder 1 and semi girder 2 to move in normal operation; And when before setting up tunnel, last hole needs to shrink semi girder, dismantle girder and semi girder junction plate 7, be at this moment only connected with girder by connecting rod 6, connecting rod 6 is driven in semi girder leading portion device for opening, and the entirety being convenient to semi girder is opened.Meanwhile, when semi girder 2 is opened, the rotation anchor point of connecting rod 6 is provided with alignment pin 4; Described alignment pin 4 is welded in the bottom surface of girder 1, is positioned at the right side of connecting rod 6; Described connecting rod 6 is connecting cantilever beam 2 and girder 1 in semi girder crossbeam 3 turns back opening procedure; Described connection girder 1 is single bar linkage structures with the connecting rod 6 of semi girder 2, be equipped with axis hole at connecting rod two ends to be connected with the turning cylinder 8.1 on the turning cylinder 1.2 of girder 1 medial surface and the branch sleeve 8 of semi girder 2 side respectively, on the downside of semi girder 2 opening procedure middle girder, alignment pin 4 limits position, ensures that connecting rod 6 arrives accurate location.
Described Bridge Erector auxiliary leg 5 is when general erected state, and its upper end is connected by bolt flange and girder crossbeam; When before Bridge Erector is satisfied, last aperture frame is established, after being advanced into tunnel before lower nose girder, pull down Bridge Erector auxiliary leg 5 upper end bolt flange, under movable motor 9 drives, auxiliary leg 5 proceeds to below reflexibie semi girder crossbeam 3, with prepared screw-bolt hole bolt below bolt and semi girder crossbeam 3, realize the connection of auxiliary leg 5 and semi girder crossbeam 3.
It is as follows that the present invention realizes the concrete grammar that semi girder 2 shrinks to girder 1 direction:
The first step: the disassembling bolts first will be connected with girder front beam above Bridge Erector auxiliary leg 5, start auxiliary leg movable motor 9, under movable motor 9 drives, auxiliary leg runs to below semi girder crossbeam 3, with bolt, the upper flanges of auxiliary leg 5 is connected with semi girder crossbeam 3 bottom bolts hole 3.09, realizes the connection of auxiliary leg 5 and semi girder crossbeam 3.
Second step: screw off girder 1 and the bolt on semi girder 2 junction plate, removes the junction plate 7 between girder 1 and semi girder 2 and the inner side otic placode 3.08 on semi girder crossbeam 3; About luffing hydraulic cylinder 3.04 promotes semi girder, the section of turning back is launched laterally, realize turning back of semi girder crossbeam 3 to open, in opening procedure, semi girder 2 is upper left with semi girder, the camber line of the right folding section of turning moves expansion to girder 1 direction, is connected to the connecting rod 6 on girder 1 along with the movement of semi girder 2 and semi girder crossbeam is upper left, right folding turns segment sync and opens.Now branch sleeve 8 and semi girder 2 keep relative position constant.When alignment pin 4 on the downside of connecting rod 6 contacts girder 1 and just vertical with semi girder 2 time opening procedure terminate.Open two inner side otic placodes 3.07 between the left and right section of turning back 3.01,3.02 of rear steel pin cantilever mounted beam crossbeam and interlude 3.03, realize semi girder 2 medial surface spacing and be greater than spacing outside girder 1.
3rd step: Bridge Erector auxiliary leg 5 drags semi girder 2 and slowly walks to girder 1 direction under the drive of movable motor 9, sleeve 8.2 holding position is constant in the process of walking, and semi girder 2 relative sleeve 8.2 slowly arrives the position met the demands.Play the effect of support cantilever beam 2 front end at semi girder walking process middle sleeve 8.2 and connecting rod 6 and the outer side wheel 1.1 of girder, semi girder 2 other end is supported by auxiliary leg 5.Cantilever mounted beam 2 behind in-position, namely completes the contraction process of semi girder 2.
Semi girder 2 of the present invention recovers the inverse process that cantilever position process is above-mentioned contraction process, and method of operating is consistent with contraction process, does not repeat.
The "left", "right" used during contractile folding cantilever beam system description scheme of the present invention, " inner side ", " outside " etc. are for foundation with the orientation of given accompanying drawing, it is convenient that they are only used to statement, be used for distinguishing the relative position in each parts or direction, do not represent orientation when contractile folding cantilever beam system of the present invention uses.
The present invention does not address part and is applicable to prior art.
Claims (2)
1. a lower nose girder walking bridging machine is turned back telescopic cantilever girder system system, comprise girder, semi girder, semi girder crossbeam, alignment pin, Bridge Erector auxiliary leg, connecting rod, junction plate, branch sleeve and movable motor, described girder and semi girder are linked together by connecting rod, junction plate or branch sleeve; Described alignment pin is positioned at the downside of girder, and semi girder crossbeam is positioned on semi girder; Described Bridge Erector auxiliary leg is positioned at below girder, and drives with movable motor and be connected; It is characterized in that: the pulley belt be made up of roller by a section outside described girder, inside girder and semi girder connecting portion, have a turning cylinder, described turning cylinder is welded on girder; Slideway is had inside described semi girder; Described semi girder inner track is a long i iron, and i iron one end is welded with Bridge Erector semi girder side; Described girder and semi girder link are inclined-plane;
Described semi girder crossbeam is three-stage structure, and comprise left reflexibie section, right reflexibie section and interlude, interlude is not reflexibie; Described semi girder crossbeam is provided with prefabricated bolt hole bottom luffing hydraulic cylinder, inner side steel pin, outside steel pin, inner side otic placode, outside otic placode and semi girder crossbeam, and all parts are symmetrical; Its left and right reflexibie section all there is an outside steel pin and outside otic placode, for the two ends of connecting cantilever beam crossbeam and semi girder; All there are an inner side steel pin and inner side otic placode in the both sides of semi girder crossbeam interlude, for the interlude of connecting cantilever beam crossbeam and left and right reflexibie section;
Described branch sleeve is the rectangular shape lacking upper and lower surface of hollow, and inner side is provided with is convenient to the chute of semi girder in branch sleeve inner slide, comprises turning cylinder and sleeve; Described turning cylinder is vertically welded on girder and semi girder link position; Described sleeve weld is on semi girder turning cylinder;
Described semi girder lower end is connected with girder by semi girder connecting rod, and under normal erected state, described semi girder and girder are fastenedly connected by junction plate; And when before setting up tunnel, last hole needs to shrink semi girder, dismantle girder and semi girder junction plate, be at this moment only connected with girder by connecting rod, connecting rod is driven in semi girder leading portion device for opening; Meanwhile, when semi girder is opened, the rotation anchor point of connecting rod is provided with alignment pin; Described alignment pin is welded in the bottom surface of girder, is positioned at the right side of connecting rod; Described connecting rod is connecting cantilever beam and girder in semi girder crossbeam turns back opening procedure; Described connecting rod two ends are equipped with axis hole, are connected respectively with the turning cylinder on the turning cylinder of girder medial surface and the branch sleeve of semi girder side, and on the downside of semi girder opening procedure middle girder, alignment pin limits position, ensure that connecting rod arrives accurate location;
Described Bridge Erector auxiliary leg is when general erected state, and its upper end is connected by bolt flange and girder crossbeam; When before Bridge Erector is satisfied, last aperture frame is established, after being advanced into tunnel before lower nose girder, pull down Bridge Erector auxiliary leg upper end bolt flange, under movable motor drives, auxiliary leg proceeds to below reflexibie semi girder crossbeam, with prepared screw-bolt hole bolt below bolt and semi girder crossbeam, realize the connection of auxiliary leg and semi girder crossbeam.
2. under one according to claim 1 nose girder walking bridging machine turn back telescopic cantilever girder system system, it is characterized in that: the connecting rod of described connection girder and semi girder is single bar linkage structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310535052.4A CN103541309B (en) | 2013-10-31 | 2013-10-31 | A kind of lower nose girder walking bridging machine is turned back telescopic cantilever girder system system |
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| CN201310535052.4A CN103541309B (en) | 2013-10-31 | 2013-10-31 | A kind of lower nose girder walking bridging machine is turned back telescopic cantilever girder system system |
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| CN105937206B (en) * | 2016-05-05 | 2017-05-31 | 青岛蓝天创先科技服务有限公司 | Prefabricated assembled overpass bridge plate and its installation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3985480A (en) * | 1972-08-18 | 1976-10-12 | Dyckerhoff & Widmann Ag | Apparatus for the sectional cantilever construction of bridge girder systems |
| CN201817776U (en) * | 2010-04-19 | 2011-05-04 | 郑州新大方重工科技有限公司 | Rearward rotary foldable cantilever beam system of main machine of lower guide beam walking-type railway bridge girder erection machine |
| CN202047375U (en) * | 2010-12-02 | 2011-11-23 | 秦皇岛天业通联重工股份有限公司 | Universal bridging machine for inside and outside high-speed railway tunnel |
| CN203080418U (en) * | 2012-12-28 | 2013-07-24 | 郑州市华中建机有限公司 | Segment assembly type bridge girder erection machine |
| CN203546622U (en) * | 2013-10-31 | 2014-04-16 | 河北工业大学 | Folding-turning retractable type cantilever beam system of lower guide beam walking type bridge girder erection machine |
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