CN101956370A - Guide beam type bridge-erecting machine capable of performing variable-span erection - Google Patents

Guide beam type bridge-erecting machine capable of performing variable-span erection Download PDF

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Publication number
CN101956370A
CN101956370A CN 200910115758 CN200910115758A CN101956370A CN 101956370 A CN101956370 A CN 101956370A CN 200910115758 CN200910115758 CN 200910115758 CN 200910115758 A CN200910115758 A CN 200910115758A CN 101956370 A CN101956370 A CN 101956370A
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CN
China
Prior art keywords
girder
nose girder
nose
supporting legs
movable supporting
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CN 200910115758
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Chinese (zh)
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CN101956370B (en
Inventor
熊春奎
巩立辉
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苏州大方特种车股份有限公司
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Priority to CN 200910115758 priority Critical patent/CN101956370B/en
Publication of CN101956370A publication Critical patent/CN101956370A/en
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Publication of CN101956370B publication Critical patent/CN101956370B/en

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Abstract

The invention relates to a guide beam type bridge-erecting machine. The guide beam type bridge-erecting machine comprises a girder and a lower guide beam, wherein a girder front supporting leg and a girder rear supporting leg are arranged at the front end and the rear end of the girder respectively; a lower guide beam front supporting leg, a moveable supporting leg and a lower guide beam para-position supporting leg are arranged on the lower bottom surface of the lower guide beam from front to back; the moveable supporting leg has an up-and-down telescopic structure; the moveable supporting leg can support the lower guide beam and can also support the girder; a crown block beam is arranged on the girder; a crane crown block is arranged on the crown block beam; a longitudinally-moveable oil cylinder is arranged on the girder; a piston rod of the longitudinally-moveable oil cylinder is connected with the crown block beam; the crown block beam can move along the girder back and forth under the action of the longitudinally-moveable oil cylinder; the lower guide beam is provided with a second guide rail by which the moveable supporting leg can move along the lower guide beam back and forth; and when the bridge-erecting machine performs variable-span erection by changing a span, the crown block beam moves along the girder back and forth and the moveable supporting leg moves along the second guide rail on the lower guide beam back and forth. The variable-span erection of the bridge-erecting machine can be realized by the position change of the moveable supporting leg of the lower guide beam and the crane crown block of the bridge-erecting machine easily.

Description

The variable nose girder formula bridge formation machine that sets up of striding
Technical field
The present invention relates to a kind of nose girder formula bridge formation machine, particularly a kind of variable nose girder formula bridge formation machine that sets up of striding.
Background technology
According to China's Mid-term and Long-term Plan of the Railway Network, about 1.2 ten thousand kilometers of Line for Passenger Transportation, high-speed railway that building at present neutralizes is about to construction, the bridge proportion surpasses 50% in the circuit.Wherein Beijing-Shanghai High-Speed Railway bridge ratio accounts for about 80%.The main beam type of these bridges is whole hole 32m, 24m, 20m prefabricated case beam, heavily about 900 tons of the heaviest 32m two-wire whole opening box girder, thereby construction has that the beam type is many, lift heavy big, set up the precision height, need to adapt to that change is striden and curve such as sets up at characteristics.Beijing-Shanghai High-Speed Railway need be passed through cable-carried arch bridge and be set up the case beam, and some Line for Passenger Transportation is located in hills and mountain area, and the bridge formation machine need set up the case beam by the tunnel.
Existing bridge formation machine generally all exists following defective: bridge formation machine cross dimensions is big, need dismantle when transition of bridge formation building site or mistake tunnel; When setting up the case beam, cable-carried arch bridge or tunnel first and last need prolong the stretch base; Bad adaptability can not be set up 24m or 20m becomes the erection construction of striding the case beam at cable-carried arch bridge or tunnel bridge group section; The via hole complex procedures; Longitudinal stability is poor.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the invention is to provide a kind of nose girder formula bridge formation machine of variable span.
In order to reach above purpose, the scheme that the present invention adopts is: a kind of nose girder formula bridge formation machine down, comprise girder and following nose girder, described girder leading section is provided with the girder front leg strut, rearward end is provided with the girder rear support leg, be respectively equipped with down the nose girder front leg strut on the bottom surface of described nose girder down backward in the past, movable supporting legs, following nose girder contraposition supporting leg, described movable supporting legs is the structure that can stretch up and down, described movable supporting legs can be used as described down nose girder and is supported in a fulcrum on the bridge floor, when described movable supporting legs protrudes upward, described movable supporting legs can be used as the fulcrum that described girder is supported in bridge floor, described girder is provided with crownblock beam, the lifting overhead traveling crane is installed on the described crownblock beam, also be provided with the vertical shift oil cylinder on the described girder, the piston rod of described vertical shift oil cylinder is connected with described crownblock beam, described crownblock beam moves forward and backward at the effect lower edge of described vertical shift oil cylinder girder, described nose girder down is provided with second guide rail that moves forward and backward for nose girder under the movable supporting legs edge, when described bridge formation machine change span is set up, described crownblock beam moves forward and backward along described girder, and described movable supporting legs moves forward and backward along second guide rail on the described nose girder down.
Preferably, described movable supporting legs comprises that crossbeam, bottom are hinged on the telescopic mast on the described crossbeam, dispose telescopic oil cylinder and rotary oil cylinder on the described telescopic mast, the lower bottom part of described crossbeam also is provided with rolling and bearing mechanism, this rolling supporting mechanism comprises movement device and jacking cylinder, described nose girder down is when work, and described jacking cylinder is regained, and following nose girder is by the movable supporting legs beam supporting; During described time nose girder vertical shift, described jacking cylinder stretches out, the described nose girder down of described movement device supporting.
Another technical scheme of the present invention is: a kind of variable nose girder formula bridge formation machine that sets up of striding, comprise girder and following nose girder, described girder leading section is provided with the girder front leg strut, rearward end is provided with the girder rear support leg, be respectively equipped with down the nose girder front leg strut on the bottom surface of described nose girder down backward in the past, movable supporting legs, following nose girder contraposition supporting leg, described movable supporting legs is the structure that can stretch up and down, described movable supporting legs can be used as described down nose girder and is supported in a fulcrum on the bridge floor, when described movable supporting legs protrudes upward, described movable supporting legs can be used as the fulcrum that described girder is supported in bridge floor, described girder is provided with crownblock beam, and the lifting overhead traveling crane is installed on the described crownblock beam; Described girder is provided with crownblock beam, the lifting overhead traveling crane is installed on the described crownblock beam, also be provided with the vertical shift oil cylinder on the described girder, the piston rod of described vertical shift oil cylinder is connected with described crownblock beam, described crownblock beam moves forward and backward at the effect lower edge of described vertical shift oil cylinder girder, described girder begins to be provided with backward a plurality of linkage units that are used to connect described girder front leg strut from leading section, when described girder front leg strut is connected on the different described linkage units, described girder front leg strut is different to the distance of girder rear support leg, and when the described linkage unit of described girder front leg strut conversion, described movable supporting legs moves to the front fulcrum of front end as described girder along described nose girder down; Described down nose girder begins also to be provided with backward a plurality of linkage units of being connected with described nose girder front leg strut down of being used for from leading section, when described following nose girder front leg strut is connected on the different described linkage units, described nose girder front leg strut down arrives the distance difference of nose girder contraposition supporting leg down, and when the described down described linkage unit of nose girder front leg strut conversion, described movable supporting legs moves to front end as the described front fulcrum of nose girder down along described nose girder down.
Because the present invention has adopted above technical scheme, obtains following beneficial effect: the bridge formation facility have to become strides function, can realize setting up of 32m, 24m, 20m prefabricated case beam, and 24m, 20m prefabricated case beam set up when especially the bridge formation machine went out cable-carried arch bridge or tunnel face; And the bridge formation machine is striden when setting up in change, a kind of mode is to realize by the change in location of descending nose girder movable supporting legs and bridge formation machine lifting overhead traveling crane, need not advance frequent dismounting, transfer and the installation of girder supporting leg, and the displacement of movable supporting legs and bridge formation machine lifting overhead traveling crane is easy to all realize and operation.Another kind of mode is with girder front leg strut, following nose girder front leg strut conversion link position, relies on the front fulcrum of movable supporting legs as girder, following nose girder, also can easily realize becoming striding purpose.
Description of drawings
Accompanying drawing 1 is the structural representation of nose girder formula bridge formation machine of the present invention;
Accompanying drawing 2 is nose girder schematic cross-sections under the nose girder formula bridge formation machine of the present invention;
Accompanying drawing 3 is structural representations of nose girder front leg strut under the nose girder formula bridge formation machine of the present invention;
Accompanying drawing 4 is nose girder front leg strut Dun Ding locking schematic diagrames under the nose girder formula bridge formation machine of the present invention;
Accompanying drawing 5 is structural representations of nose girder formula movable supporting legs of bridge erecting machine of the present invention;
Accompanying drawing 6 is nose girder contraposition leg structure schematic diagrames under the nose girder formula bridge formation machine of the present invention;
Accompanying drawing 7 is nose girder formula crane ' s major girder structural representations of the present invention;
Accompanying drawing 8 is structural representations of nose girder formula girder front leg strut of the present invention;
Accompanying drawing 9 is structural representations of nose girder formula girder rear support leg of the present invention;
Accompanying drawing 10 is that nose girder formula girder front leg strut of the present invention reaches nose girder front leg strut working state structure schematic diagram down;
Accompanying drawing 11 is front views of nose girder formula bridge formation machine lifting overhead traveling crane of the present invention;
Accompanying drawing 12 is lateral views of nose girder formula bridge formation machine lifting overhead traveling crane of the present invention;
Accompanying drawing 13 is structural representations of nose girder formula movable supporting legs of bridge erecting machine feeding beam state of the present invention;
Accompanying drawing 14 is structural representations of nose girder formula movable supporting legs of bridge erecting machine duty of the present invention;
Accompanying drawing 15 is that nose girder formula bridge formation prow of the present invention is striden to set up and become the schematic diagram one (setting up the 32m span) stride the case beam;
Accompanying drawing 16 is that nose girder formula bridge formation prow of the present invention is striden to set up and become the schematic diagram two (setting up the 24m span) stride the case beam;
Accompanying drawing 17 is that nose girder formula bridge formation prow of the present invention is striden to set up and become the schematic diagram three (setting up the 20m span) stride the case beam;
Wherein: 1, girder; 101, girder unit; 102, rear support leg flanged plate; 103, front leg strut flanged plate; 2, girder front leg strut; 201, first telescopic mast; 202, telescopic oil cylinder; 203, top rail; 204, overturning oil cylinder; 205, first tie-beam; 206, the 3rd traveling roller box; 3, girder rear support leg; 301, the bent leg of C shape; 302, straight leg; 303, second telescopic mast; 304, the first traveling roller box; 4, following nose girder; 401, carry beam dolly aisle square steel on the back; 402, orbit square steel voluntarily; 403, hanging rail square steel; 5, following nose girder front leg strut; 501, supporting leg door frame; 502, hang wheel; 503, first oil cylinder; 504, second spiral top; 6, following nose girder contraposition supporting leg; 601, supporting leg crossbeam; 602, the second traveling roller box; 603, second oil cylinder; 604, free bearing; 7, movable supporting legs; 701, base; 702, the 3rd telescopic mast; 703, locking mechanism; 704, hanging mechanism; 705, oil cylinder; 706, following nose girder connecting gear; 707, bearing; 708, roller; 709, jacking unit; 8, lifting overhead traveling crane; 801, crownblock beam; 802, vertical shift oil cylinder; 803, fixed pulley group; 804, running block; 805, sideslip oil cylinder; 9, suspender.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
Referring to the nose girder formula bridge formation machine shown in the accompanying drawing 1, it comprises girder 1, be installed in the girder front leg strut 2 of girder 1 leading section, be installed in main beam rear end portion girder rear support leg 3, be installed in the girder below following nose girder 4, be installed in down the nose girder leading section following nose girder front leg strut 5, be installed in down the following nose girder contraposition supporting leg 6 of nose girder rearward end, be arranged on down movable supporting legs 7 on the nose girder 4 movably, also movably be provided with lifting overhead traveling crane 8 and suspender 9 on the girder 1.Movable supporting legs 7 is the structure that can stretch up and down, and it both can be used as down nose girder 4 and has been supported in a fulcrum on the bridge floor, and when movable supporting legs 7 protruded upward, it also can be used as the fulcrum that girder 1 is supported in bridge floor.
As shown in Figure 7, girder 1 is a twin beams box-shaped formula, and every group of girder is made of four joint girder unit 101, and vertically symmetric design can realize two-way operation.Concrete structure is: the rearward end of girder is established rear support leg flanged plate 102, and the girder leading section is provided with front leg strut flanged plate 103, and rear support leg flanged plate 102 both can be connected with described girder rear support leg 3, also can be connected with girder front leg strut 2; Front leg strut flanged plate 103 both can be connected with girder front leg strut 2, also can be connected with girder rear support leg 3.Girder front leg strut 2 and girder rear support leg 3 all are both can be connected the leading section of girder 1, also can be connected the rearward end of girder 1.Each saves between the girder unit 101 splices by burnished bolt and junction plate, and whole girder 1 is the main load bearing component of bridge formation machine.The top of girder 1 is provided with the chute board for lifting overhead traveling crane displacement slippage.There is the connection crossbeam at the girder two ends, connect on the crossbeam hoist engine can be installed.There is the connection crossbeam at girder 1 two ends, connect on the crossbeam hoist engine can be installed.Girder 1 begins to be provided with backward a plurality of linkage unit (not shown)s from leading section, each linkage unit can be connected with girder front leg strut 2, like this when girder front leg strut 2 is connected on the different linkage units, distance between girder front leg strut 2 and the girder rear support leg 3 is different, the beam case that like this should the bridge formation machine just can set up different spans, beam case as 32m, 24m, 20m, and when girder front leg strut 2 was changed the linkage unit that is connected, movable supporting legs 7 moved forward the front fulcrum of back as girder 1 along following nose girder 4.
As shown in Figure 8, girder front leg strut 2 comprises two first telescopic masts 201 being connected with girder 1, is used to the overturning oil cylinder 204 controlling the flexible telescopic oil cylinder 202 of first telescopic mast, be used to control the upset of first telescopic mast.It is hinged by free bearing with top rail 203 that the top of first telescopic mast 201 is provided with top rail 203, the first telescopic masts 201, and top rail 203 is connected with girder 1.First telescopic mast 201 is connected with the piston rod of overturning oil cylinder 204, and overturning oil cylinder 204 is arranged on the inside of first telescopic mast 201, when the piston rod of overturning oil cylinder 204 is regained, makes 201 upsets of first telescopic mast.Be provided with first tie-beam 205 between two first telescopic masts 201, first tie-beam 205 is provided with the 3rd traveling roller box 206, the 3rd traveling roller box 206 cooperates with first track on the following nose girder 4 and can slippage on first track, thereby drives girder front leg strut 2 and whole girder 1 moves.
As shown in Figure 9, girder rear support leg 3 comprises the bent leg 301 of C shape, and the upper end of the bent leg 301 of C shape is hinged by free bearing and girder 1, and the bottom of the bent leg 301 of C shape is connected with straight leg 302.Be provided with second telescopic mast 303 in the straight leg 302, second telescopic mast 303 stretches out with girder 1 and is connected when shifting between bridge formation machine via hole or bridge, can make himself stable.Straight leg 302 bottoms are connected with the first traveling roller box and sleeper beam (among the figure for illustrating), girder rear support leg 3 moves on the case beam by the first traveling roller box, the sleeper beam bottom is equipped with first spiral top, and when zero load, first spiral top is as the support and the governor motion of girder rear support leg.When on the girder 1 load being arranged, this moment is by the back support component of movable supporting legs 7 as girder 1.
Following nose girder 4 supporting parts are case beam section structure, and the nose girder of auxiliary via hole partly is the capable cross section structure of groove.Following nose girder 4 end faces are laid and are carried beam dolly aisle square steel 41 on the back, the orbit square steel voluntarily 42 that uses when following nose girder 4 bottom surfaces are provided with for time nose girder 4 via holes, and following nose girder 1 bottom surface dual-side also is provided with the hanging rail square steel 43 that movable supporting legs 7 is used for vertical shift, referring to Fig. 2.Following nose girder 4 tops are equipped with first guide rail that matches with the 3rd traveling roller box 206, and following nose girder 4 bottoms are provided with second guide rail, and movable supporting legs 7 and following nose girder front leg strut 5 can move on second guide rail.Following nose girder 4 begins also to be provided with backward a plurality of linkage units from leading section, each linkage unit can be connected with following nose girder front leg strut 5, when nose girder front leg strut 5 is connected on the different linkage units so instantly, distance between following nose girder front leg strut 5 and the following nose girder contraposition supporting leg 6 is different, should just can realize setting up the beam case of different spans by the bridge formation machine like this, beam case as 32m, 24m, 20m, and when nose girder front leg strut 5 was changed the linkage unit that is connected down, movable supporting legs 7 moved forward the back conduct front fulcrum of nose girder 4 down along following nose girder.
As shown in Figure 3, following nose girder front leg strut 5 comprises supporting leg door frame 501, hang wheel 502, be positioned at first oil cylinder 503 of supporting leg door frame 501 inside, the piston rod that is arranged on second spiral top, 504, the first oil cylinders 503 of supporting leg door frame upper end pushes up 504 with second spiral and is connected.When the piston rod of first oil cylinder 503 stretched out, following nose girder front leg strut 5 was connected with following nose girder 4 bottoms by second spiral top 504, and following nose girder 4 is by nose girder front leg strut 5 supports down, load by following nose girder 4, second spiral push up 504, the supporting leg door frame transmits downwards.When the piston rod of first oil cylinder 503 is withdrawn, removed being connected between second spiral top and the following nose girder 4, following nose girder front leg strut 5 502 is hung on second guide rail by hanging wheel, and following nose girder front leg strut 5 can move before and after on second guide rail under the driving of first motor.Following nose girder front leg strut 5 locks schematic diagram referring to accompanying drawing 4 with Dun Ding, and the duty of following nose girder front leg strut 5 and girder front leg strut 2 is referring to shown in the accompanying drawing 10.
As shown in Figure 6, following nose girder contraposition supporting leg 6 comprises the supporting leg crossbeam 601 that the upper end is connected with following nose girder 4, second roller box 602 out of shape that is arranged on supporting leg crossbeam 601 bottoms, the second traveling roller box 602 is power and the rolling running mechanism when descending nose girder 4 and the displacement of bridge formation machine via hole by the 3rd motor-driven.The both ends of supporting leg crossbeam 601 are installed in respectively on the free bearing 604, and the second traveling roller box 602 is connected with supporting leg crossbeam 601 by described free bearing 604.The bottom of supporting leg crossbeam 601 is connected with second oil cylinder 603, and following nose girder contraposition supporting leg 6 can rise under the effect of second oil cylinder 603 and descend, and after fortune beam dolly fortune beam put in place, second oil cylinder 603 was adjusted the height of nose girder 4 down, docks with Beam transportation vehicle.Following nose girder contraposition supporting leg 6 both can be fixedlyed connected with the rearward end of following nose girder 4, also can fixedly connected with girder rear support leg 3, following nose girder contraposition supporting leg 6 is provided with power unit, this power unit can drive down, and nose girder contraposition supporting leg 6 moves forward, when the supporting leg of nose girder contraposition instantly 6 is connected with following nose girder 4, following nose girder contraposition supporting leg 6 can be used as down nose girder 4 and is supported on rear fulcrum on the bridge floor, and under the situation that nose girder 4 moves forward down, following nose girder contraposition supporting leg 6 also can be used as actuating unit; When the supporting leg of nose girder contraposition instantly 6 was fixedlyed connected with girder rear support leg 3, following nose girder contraposition supporting leg 6 can be used as girder 1 and is supported on rear fulcrum on the case beam, and under the situation that girder 1 moves forward, following nose girder contraposition supporting leg 6 also can be used as actuating unit.
As shown in Figure 5, movable supporting legs 7 comprises base 701, bottom-hinged is at a pair of the 3rd telescopic mast 702 at base 701 both ends, is arranged on being used on the base 701 base is locked in locking mechanism 703 on the case beam, and drives the hanging mechanism 704 that movable supporting legs 7 moves forward and backward.When movable supporting legs 7 needs were mobile, movable supporting legs 7 moved on second guide rail by hanging mechanism 704.The 3rd telescopic mast 702 is made up of two joint telescopic mast unit, two joint telescopic mast unit sockets.Superposed telescopic mast unit is connected with the piston rod of oil cylinder 705, and when the piston rod of oil cylinder 705 stretched out, superposed telescopic mast unit stretched out, can be as a fulcrum that supports girder 1; When the piston rod of oil cylinder 705 is withdrawn, the withdrawal of superposed telescopic mast unit.Specifically also comprise nose girder connecting gear 706 down referring to accompanying drawing 13,14 movable supporting legs 7, following nose girder connecting gear 706 comprises the bearing 707 that is arranged on the base 701, be arranged on roller 708 above the bearing 707, drive the jacking unit 709 that bearing 707 moves up, the jacking unit is arranged on the base 701, when nose girder 4 was advanced instantly, following nose girder 4 was supported on the roller 708 and moves ahead.
Shown in Figure 11,12, lifting overhead traveling crane 8 comprises crownblock beam 801, is arranged on the vertical shift oil cylinder 802 on the girder 1, the piston rod of vertical shift oil cylinder 802 is connected with crownblock beam 801, and crownblock beam 801 can move forward and backward under the effect of vertical shift oil cylinder 802, to adapt to the lifting of different spans beam type.Hoist engine adopts motor second to drive, and can carry out stepless speed regulation, realizes that suspender does not have the lifting of impact and stops hook.Hoist engine is installed in girder 1 rear and front end and connects on the crossbeam 102.Suspender 9 is connected with crownblock beam 801 by pulley assembly.Pulley assembly comprises fixed pulley group 803 and running block 804.Fixed pulley group 803 is arranged on the crownblock beam 801, and it comprises a plurality of pulley sheets, and the pulley sheet is connected with the piston rod of sideslip oil cylinder 805, and the pulley sheet can move laterally along girder 1 under the effect of sideslip oil cylinder 805, the accurate positioning requirements when falling beam to satisfy.Running block 804 is made up of a plurality of pulley sheets and casing, and its bottom is connected with suspender 9.For guaranteeing the hanging beam job safety, hoist engine is provided with two cover check mechanism, and the hoist engine speed end is provided with hydraulic push-rod brake, and the reel baffle plate is provided with the hydraulic tongs disk brake.
Also can be installed in the rear end of girder 1 by the front end of crane ' s major girder front leg strut 2 and girder rear support leg 3 all being arranged to both can be installed in girder 1, so just make the bridge formation machine can realize two-way operation,
Because movable supporting legs 7 both can be installed in down and also can be installed on the nose girder 4 on the girder 1, power and rolling running mechanism when movable supporting legs 7 both can be used as down the displacement of nose girder 4 via holes like this, power and rolling running mechanism when also can be used as the displacement of girder 1 via hole.
In box beam erection construction, the bridge formation machine may run into 4 kinds of changes strides and sets up, and is respectively 20m → 24m, 24m → 20m, 32m → 24m, 24m → 32m.Nose girder formula bridge formation machine of the present invention is striden and become to stride in the various grades of adaptation has unique advantages when setting up, promptly only can realize by the change in location of descending nose girder movable supporting legs 7 and bridge formation machine lifting overhead traveling crane 8, be specially by: movable supporting legs 7 is moved forward and backward along second guide rail, make it satisfy the span requirement of the beam case that is about to set up to the distance between the girder front leg strut 2, and then the telescopic unit on the 3rd telescopic mast 702 tops on the movable supporting legs 7 upwards risen, movable supporting legs 7 just can be used as the back support fulcrum of girder 1 like this, itself and girder front leg strut 2 together support girders 1 with and on load; The crownblock beam 801 that will arrive again on the girder 1 moves forward and backward along girder, makes it satisfy the requirement of the case beam with new span sling.Therefore, bridge formation machine of the present invention is striden when setting up in change, need not carry out frequent dismounting, transfer and the installation of each supporting leg of bridge formation machine.Only mobile movable supporting legs 7 and bridge formation machine lifting overhead traveling crane 8 get final product, and the displacement of movable supporting legs 7 and bridge formation machine lifting overhead traveling crane 8 also all is easy to realize and operation.
The bridge formation machine of present embodiment can also become to stride and sets up by another mode, shown in Figure 15,16,17, Figure 15 is the schematic diagram when setting up 32m beam case, girder front leg strut 2 connects girders 1 foremost at this moment, following nose girder front leg strut 5 also is installed in down the front position of nose girder, the position of lifting overhead traveling crane 8 also is fit to requirement, and movable supporting legs 7 still is positioned at the rear of nose girder 4 down.As shown in figure 16, what the frame of building bridge this moment was established is the beam case of 24m span, girder front leg strut 2 changes with the link position of girder 1, when setting up the 32m beam, link position moves backward, promptly be connected on the linkage unit at girder 1 leading section rear, the distance of girder front leg strut 2 between girder rear support leg 3 reduces to adapt to the needs when setting up the 24m beam like this; The link position of following nose girder front leg strut 5 also changes, following nose girder front leg strut 5 is connected on the linkage unit of back, the linkage unit 8m that this linkage unit is connected during apart from the 32m beam descends the distance between nose girder front leg strut 5 and the following nose girder contraposition supporting leg 6 also to dwindle the demand of setting up the 24m beam to adapt to like this.Equally, as shown in figure 17, this is the structure of the bridge formation machine when setting up the 20m beam, and 4m has been moved when setting up the 24m beam again backward in the position of this structural down nose girder front leg strut 5, girder front leg strut 2 and lifting overhead traveling crane 8, to satisfy the needs that set up the 20m beam.On the contrary, if the span of the beam case that the bridge formation frame is established is when 20m become greater to 24m etc., as long as will descend all conversion positions in succession forward of nose girder front leg strut 5, girder front leg strut 2 and lifting overhead traveling crane 8 in a manner mentioned above.In addition, when on above-mentioned variation girder 1, being used to connect the linkage unit of girder front leg strut 2, because after 2 dismountings of girder front leg strut, girder 1 will lack front fulcrum, to descend the movable supporting legs 7 on the nose girder 4 to move forward this moment, when movable supporting legs 7 moved to appropriate position, the telescopic unit on top protruded upward so that it can become the front fulcrum of girder 1; Equally, under conversion during nose girder front leg strut 2, movable supporting legs 7 also can move forward as the front fulcrum of nose girder 4 down.
32m case beam head strides when setting up, and it is identical that the erect-position of following nose girder 1 and bridge formation machine and standard are striden, because the restriction of tunnel clearance size, girder rear support leg 3 can't launch in the tunnel, can not adopt with standard and strides identical erect-position so 24m, 20m head stride the case beam.For this reason, girder rear support leg 3 launched outside the tunnel face after the bridge formation machine went out the tunnel, moved 8m or 12m behind girder front leg strut 2, movable supporting legs 7 and the preceding lifting overhead traveling crane 8 and installed, and carried out the erection construction that 24m or 20m head stride the case beam.
Stride when setting up at the end, and the bridge formation machine adopts with following nose girder 1 and strides identical erect-position with standard.
Set forth below should bridge formation machine construction operation idiographic flow:
Step 1: after Beam transportation vehicle fortune beam put in place, fine setting is the following nose girder contraposition supporting leg of nose girder afterbody down, and the Beam transportation vehicle butt joint is nose girder down.
The sliding beam of sliding beam dolly on step 2, the fortune beam dolly puts in place, and movable supporting legs protrudes upward to the girder bottom and holds out against and lock.
Step 3: lifting overhead traveling crane hanging beam, sliding beam dolly is return Beam transportation vehicle, and the releasing Beam transportation vehicle is connected with following nose girder, and Beam transportation vehicle returns Liang Chang fortune beam.
Step 4: nose girder retreats to assigned address under the bridge floor, and the lifting overhead traveling crane falls beam to the exact position.

Claims (3)

1. variable nose girder formula bridge formation machine that sets up of striding, it is characterized in that: comprise girder and following nose girder, described girder leading section is provided with the girder front leg strut, rearward end is provided with the girder rear support leg, be respectively equipped with down the nose girder front leg strut on the bottom surface of described nose girder down backward in the past, movable supporting legs, following nose girder contraposition supporting leg, described movable supporting legs is the structure that can stretch up and down, described movable supporting legs can be used as described down nose girder and is supported in a fulcrum on the bridge floor, when described movable supporting legs protrudes upward, described movable supporting legs can be used as the fulcrum that described girder is supported in bridge floor, described girder is provided with crownblock beam, the lifting overhead traveling crane is installed on the described crownblock beam, also be provided with the vertical shift oil cylinder on the described girder, the piston rod of described vertical shift oil cylinder is connected with described crownblock beam, described crownblock beam moves forward and backward at the effect lower edge of described vertical shift oil cylinder girder, described nose girder down is provided with second guide rail that moves forward and backward for nose girder under the movable supporting legs edge, when described bridge formation machine change span is set up, described crownblock beam moves forward and backward along described girder, and described movable supporting legs moves forward and backward along second guide rail on the described nose girder down.
2. the variable nose girder formula bridge formation machine that sets up of striding according to claim 1, it is characterized in that: described movable supporting legs comprises that crossbeam, bottom are hinged on the telescopic mast on the described crossbeam, dispose telescopic oil cylinder and rotary oil cylinder on the described telescopic mast, the lower bottom part of described crossbeam also is provided with rolling and bearing mechanism, this rolling supporting mechanism comprises movement device and jacking cylinder, described nose girder down is when work, and described jacking cylinder is regained, and following nose girder is by the movable supporting legs beam supporting; During described time nose girder vertical shift, described jacking cylinder stretches out, the described nose girder down of described movement device supporting.
3. variable nose girder formula bridge formation machine that sets up of striding, it is characterized in that: comprise girder and following nose girder, described girder leading section is provided with the girder front leg strut, rearward end is provided with the girder rear support leg, be respectively equipped with down the nose girder front leg strut on the bottom surface of described nose girder down backward in the past, movable supporting legs, following nose girder contraposition supporting leg, described movable supporting legs is the structure that can stretch up and down, described movable supporting legs can be used as described down nose girder and is supported in a fulcrum on the bridge floor, when described movable supporting legs protrudes upward, described movable supporting legs can be used as the fulcrum that described girder is supported in bridge floor, described girder is provided with crownblock beam, and the lifting overhead traveling crane is installed on the described crownblock beam; Described girder is provided with crownblock beam, the lifting overhead traveling crane is installed on the described crownblock beam, also be provided with the vertical shift oil cylinder on the described girder, the piston rod of described vertical shift oil cylinder is connected with described crownblock beam, described crownblock beam moves forward and backward at the effect lower edge of described vertical shift oil cylinder girder, described girder begins to be provided with backward a plurality of linkage units that are used to connect described girder front leg strut from leading section, when described girder front leg strut is connected on the different described linkage units, described girder front leg strut is different to the distance of girder rear support leg, and when the described linkage unit of described girder front leg strut conversion, described movable supporting legs moves to the front fulcrum of front end as described girder along described nose girder down; Described down nose girder begins also to be provided with backward a plurality of linkage units of being connected with described nose girder front leg strut down of being used for from leading section, when described following nose girder front leg strut is connected on the different described linkage units, described nose girder front leg strut down arrives the distance difference of nose girder contraposition supporting leg down, and when the described down described linkage unit of nose girder front leg strut conversion, described movable supporting legs moves to front end as the described front fulcrum of nose girder down along described nose girder down.
CN 200910115758 2009-07-20 2009-07-20 Guide beam type bridge-erecting machine capable of performing variable-span erection CN101956370B (en)

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CN103510470A (en) * 2012-06-29 2014-01-15 秦皇岛天业通联重工股份有限公司 Hydraulic span change device of bridge girder erection machine
CN103590337A (en) * 2012-08-17 2014-02-19 秦皇岛天业通联重工股份有限公司 Bridge girder erection machine system and transferring method thereof
CN105970821A (en) * 2016-06-06 2016-09-28 武汉市创先专利技术服务有限公司 Telescopic beam of bridge plate installation equipment for prefabricated assembly type viaduct

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CN103510470A (en) * 2012-06-29 2014-01-15 秦皇岛天业通联重工股份有限公司 Hydraulic span change device of bridge girder erection machine
CN103510470B (en) * 2012-06-29 2016-08-24 秦皇岛天业通联重工科技有限公司 The hydraulic pressure of a kind of Bridge Erector becomes cross-device
CN103590337A (en) * 2012-08-17 2014-02-19 秦皇岛天业通联重工股份有限公司 Bridge girder erection machine system and transferring method thereof
CN103590337B (en) * 2012-08-17 2016-06-15 秦皇岛天业通联重工科技有限公司 A kind of bridge girder erection machine system and transfer method thereof
CN105970821A (en) * 2016-06-06 2016-09-28 武汉市创先专利技术服务有限公司 Telescopic beam of bridge plate installation equipment for prefabricated assembly type viaduct
CN105970821B (en) * 2016-06-06 2017-08-04 青岛蓝天创先科技服务有限公司 Prefabricated assembled overpass bridge plate installs the extensible canopy of equipment

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