CN207633219U - It constructs by cross for precast segmental beam the open-close type leg structure of Bridge Erector - Google Patents
It constructs by cross for precast segmental beam the open-close type leg structure of Bridge Erector Download PDFInfo
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- CN207633219U CN207633219U CN201720586038.0U CN201720586038U CN207633219U CN 207633219 U CN207633219 U CN 207633219U CN 201720586038 U CN201720586038 U CN 201720586038U CN 207633219 U CN207633219 U CN 207633219U
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Abstract
It constructs by cross the open-close type leg structure of Bridge Erector for precast segmental beam the utility model discloses a kind of, include No. four supporting legs set on main frame rear end, No. four supporting legs include outer sleeve column, jacking cylinder, interior sleeve column, bottom end rail and running mechanism, both lateral sides below main frame have been bolted outer sleeve column, interior sleeve column sliding sleeve is set in outer sleeve column and is fixed using alignment pin positioning, and jacking cylinder is connected between interior sleeve column and outer sleeve column；It is connected by bottom end rail between sleeve column in two；Bottom end rail is divided into two sub- crossbeams using its center as boundary, detachable between two sub- crossbeams to be fixedly connected, and every is all provided with rack gear between sub- crossbeam and interior sleeve column.The utility model can avoid generating interference from the feeding beam operation of bridge formation drive end unit to beam car, and be adjusted convenient for height of landing leg, to meet the construction demand of high speed railway prefabricating beam sections.
Description
Technical field
The utility model is related to high-speed railway construction technical fields, and in particular to one kind is constructed by cross for precast segmental beam
The open-close type leg structure of Bridge Erector.
Background technology
It is various types of especially in high-speed railway construction construction with the fast development of China's science and technology and infrastructure
The Bridge Erector of type is widely used, and improves the speed of application and quality of railway.But due to the public affairs of Along Railway distribution
The sensitizing ranges such as road, natural water source protection zone, military installations are more, and execution conditions are complicated, adapt to Bridge Erector the ability of circuit
More stringent requirements are proposed.
Although Bridge Erector has been widely used in high-speed railway construction at this stage, there are the shortcomings that be also that can not avoid
's：Beam car can be influenced from bridge formation drive end unit in girder erection by bridging machine positioned at the supporting leg of main frame rear end on existing Bridge Erector
Feeding beam operation, influences construction efficiency；And it is inconvenient that the height of the supporting leg is adjusted, and does not adapt to the construction of different head falls and needs
It asks.
Thus the demand to high speed railway prefabricating beam sections construction equipment special is more and more urgent.
Utility model content
The utility model provides one kind and constructs by cross for precast segmental beam to solve shortcoming in the prior art
The open-close type leg structure of Bridge Erector avoids generating interference from the feeding beam operation of bridge formation drive end unit to beam car, and is convenient for supporting leg
Height is adjusted, to meet the construction demand of high speed railway prefabricating beam sections.
In order to solve the above technical problems, the utility model adopts the following technical solution：It constructs by cross for precast segmental beam
The open-close type leg structure of Bridge Erector, includes No. four supporting legs 5 set on 1 rear end of main frame, and No. four supporting legs 5 include outer sleeve column
The both lateral sides of 5a, jacking cylinder 5b, interior sleeve column 5c, bottom end rail 5d and running mechanism 5f, 1 lower section of main frame have been bolted
Outer sleeve column 5a, interior sleeve column 5c sliding sleeves are set in outer sleeve column 5a and are fixed using alignment pin positioning, interior sleeve column 5c and outer sleeve column
Jacking cylinder 5b is connected between 5a；It is connected by bottom end rail 5d between sleeve column 5c in two；
Bottom end rail 5d is divided into two sub- crossbeams using its center as boundary, detachable between two sub- crossbeams to be fixedly connected, often
Rack gear is all provided between a sub- crossbeam and interior sleeve column 5c, rack gear includes being located at the guide bracket of the lower parts interior sleeve column 5c
5e, the driving gear 5g being arranged on guide bracket 5e and the rack 5h being arranged along the horizontal on sub- crossbeam, sub- crossbeam with it is corresponding
Guide bracket 5e slides laterally cooperation, and driving gear 5g is meshed with corresponding rack 5h；The bottom of every sub- crossbeam is all connected with traveling
Mechanism 5f.
It is fixedly connected between described two sub- crossbeams by the way that bolt is detachable.
The advantageous effect of device in the utility model：
No. four supporting legs of the utility model by the interior sleeve column of arranging, entangle realize that height of landing leg is adjusted with jacking cylinder outside,
The construction demand of different head falls is adapted to, and the bottom end rail of No. four supporting legs can be realized by rack gear and laterally be beaten
It opens, convenient for beam car from bridge formation drive end unit feeding beam, avoids generating interference to feeding beam operation, to meet high speed railway prefabricating beam sections
Construction demand.
Description of the drawings
Attached drawing 1 is the overall structure front view of the utility model；
Attached drawing 2 is the front view of main frame in the utility model；
Attached drawing 3 is the vertical view of main frame in the utility model；
Attached drawing 4 is the front view of No.1 supporting leg in the utility model；
Attached drawing 5 is the side view of No.1 supporting leg in the utility model；
Attached drawing 6 is the front view of No. two supporting legs in the utility model；
Attached drawing 7 is the side view of No. two supporting legs in the utility model；
Attached drawing 8 is the front view of No. three supporting legs in the utility model；
Attached drawing 9 is the side view of No. three supporting legs in the utility model；
Attached drawing 10 is the front view of No. four supporting legs in the utility model；
Attached drawing 11 is the side view of No. four supporting legs in the utility model；
Attached drawing 12 is the bottom end rail of No. four supporting legs in the utility model front view in the open state；
Attached drawing 13 is the side view of Figure 12；
Attached drawing 14 is the front view of main overhead traveling crane in the utility model；
Attached drawing 15 is the side view of main overhead traveling crane in the utility model；
Attached drawing 16 is the front view of assistant crown block in the utility model；
Attached drawing 17 is the side view of assistant crown block in the utility model；
Attached drawing 18 is the side view that drop shot is hung in the utility model；
Attached drawing 19 is the side view of long hanging in the utility model；
Attached drawing 20 is A direction views in Figure 18；
Attached drawing 21 is B direction views in Figure 18；
Attached drawing 22 is C-C diagrammatic cross-sections in Figure 18；
Attached drawing 23 is the molding status diagram of wet joint template in the utility model；
Attached drawing 24 is the die opening state schematic diagram of wet joint template in the utility model；
Attached drawing 25 is one of the schematic diagram of the girder erection by bridging machine process of the utility model；
Attached drawing 26 is the two of the schematic diagram of the girder erection by bridging machine process of the utility model；
Attached drawing 27 is the three of the schematic diagram of the girder erection by bridging machine process of the utility model；
Attached drawing 28 is one of the schematic diagram of the Bridge Erector via process of the utility model；
Attached drawing 29 is the two of the schematic diagram of the Bridge Erector via process of the utility model；
Attached drawing 30 is the three of the schematic diagram of the Bridge Erector via process of the utility model；
Attached drawing 31 is the four of the schematic diagram of the Bridge Erector via process of the utility model；
Attached drawing 32 is the five of the schematic diagram of the Bridge Erector via process of the utility model；
Attached drawing 33 is the six of the schematic diagram of the Bridge Erector via process of the utility model；
Attached drawing 34 is one of the schematic top plan view of the traversing process of the utility model；
Attached drawing 35 is the two of the schematic top plan view of the traversing process of the utility model
Attached drawing 36 is the three of the schematic top plan view of the traversing process of the utility model；
Attached drawing 37 is the four of the schematic top plan view of the traversing process of the utility model.
Specific implementation mode
Arrow direction in attached drawing indicates the erection direction for the Bridge Erector construction method constructed by cross for precast segmental beam.
As shown in Figure 1, for the Bridge Erector that precast segmental beam is constructed by cross, including main frame 1, leg system, hanging system
System, wet joint template system and Overhead travelling crane system, leg system are included in what main frame lower section was sequentially arranged from front to back along longitudinal direction
The supporting leg 4 of supporting leg 3, three of No.1 supporting leg 2, two and No. four supporting legs 5, wherein No.1 supporting leg 2 and No. four supporting legs 5 are located at main frame
The both ends of frame 1 are as Auxiliary support supporting leg, and No. two supporting legs 3 and No. three supporting legs 4 are heavily loaded support leg, and hangar system is connected to master
The bottom of frame 1, wet joint template system are connected to the outside of main frame 1, and Overhead travelling crane system is set to the vertical shift rail at 1 top of main frame
On road.Furthermore according to the performance and feature of Bridge Erector, accessory structure, hydraulic system, electrical system, safety monitoring system distinguish cloth
It sets on each component, accessory structure, hydraulic system, electrical system, safety monitoring system use the prior art.
As shown in Figure 4 and Figure 5, No.1 supporting leg 2 include upper beam 2a, it is the beam 2b that cranks arm, outer sleeve column 2c, jacking cylinder 2d, interior
Sleeve column 2e, frame 2f, adjustable supports 2g being contacted and is increased and saves 2h, upper beam 2a is bolted with main frame, and upper beam 2a
Lower section is transversely provided with two symmetrical beam 2b that crank arm, and the tops beam 2b of cranking arm are hinged by lateral axis pin and upper beam 2a, crank arm
The lower parts beam 2b are bolted with outer sleeve column 2c, and interior sleeve column 2e sliding sleeves are set in outer sleeve column 2c and are positioned using alignment pin solid
It is fixed, jacking cylinder 2d is connected between interior sleeve column 2e and outer sleeve column 2c, and the height of No.1 supporting leg 2 may be implemented by jacking cylinder 2d
Adjusting, to adapt to the construction demand of different deck-moldings, head fall；The lower parts interior sleeve column 2e are bolted with section 2h is increased, corresponding
Two increase section 2h between using contact frame 2f connections, increase section 2h bottom be equipped with adjust support 2g.End across when remove
Increase section 2h connection bolts, No.1 supporting leg 2 is supported in bridge floor.
As shown in Figure 6 and Figure 7, No. two supporting legs 3 include displacement trolley 3a, crossbeam 3b, column 3c and support cylinder 3d, displacement
Trolley 3a is slidably matched with main frame 1, and 1 lower railway of main frame is placed directly on the slide of displacement trolley 3a, and shifts trolley 3a
The hydraulic pushing mechanism for pushing the 3a longitudinal movements of displacement trolley is equipped between main frame 1, displacement trolley 3a is mounted on crossbeam 3b
Above and the cooperation of formed transverse shifting, the lower sections crossbeam 3b are transversely provided with two symmetrical column 3c, the tops column 3c and cross
Beam 3b is bolted, and support cylinder 3d is bolted below column 3c；The side of No. two supporting legs 3 is equipped with and has set up bridge floor or pier
Push up the anchoring strut 3e that pre-buried spiral is anchored.
Under the premise of ensureing safety, bearing capacity and pier top erect-position demand, the column 3c of No. two supporting legs 3 is L-type structure,
The design ensures that end prestressed stretch-draw is not influenced by supporting leg erect-position to improve construction efficiency as principle.Below each column 3c
Support cylinder 3d be set as two, corresponding two support cylinder 3d are mounted in the box-girder below column 3c, with arranging
Load-bearing anchor ear constitute No. two supporting legs 3 jacking apparatus, realize complete machine short transverse adjustment.
No. two supporting legs 3 are bridge formation owner's bearing force props, are supported in pier top under state of setting a roof beam in place, complete machine mistake is used as under via state
The power resources in hole push Bridge Erector via, No. two supporting legs 3 and No. three supporting legs 4 to use hydraulic pushing machine with No. three cooperations of supporting leg 4
Structure fully relies on equipment itself and via can be completed, construction efficiency is high, convenient and efficient without any ancillary equipment.In weight
During carrier beam, the large-tonnage support cylinder 3d of No. two supporting legs 3 configuration unloads convenient for complete machine, removes hanging spiral, greatly
Width improves work efficiency；During via, No. two supporting legs 3 using anchoring strut 3e respectively with set up the pre-buried screw thread of bridge floor, pier top
Reinforcing bar is anchored.
As shown in Figure 8 and Figure 9, No. three supporting legs 4 include displacement trolley 4a, crossbeam 4b and support cylinder 4c, displacement trolley 4a
It is slidably matched with main frame 1,1 lower railway of main frame is placed directly on the slide of displacement trolley 4a, and shifts trolley 4a and main frame
Be equipped with the hydraulic pushing mechanism for pushing displacement trolley 4a longitudinal movement between frame 1, displacement trolley 4a be mounted on crossbeam 4b and with
It forms transverse shifting cooperation, and below the crossbeam utilizes and is bolted support cylinder 4c；The side of No. three supporting legs 4 is equipped with and has set up
The anchoring strut 4d that bridge floor or the pre-buried spiral of pier top are anchored.
The support cylinder 4c of 4 lower section of No. three supporting legs is set as four, and four support cylinder 4c are mounted on the case of crossbeam 4b
In ellbeam, the jacking apparatus of No. three supporting legs 4 is constituted with the load-bearing anchor ear of arranging, realizes the adjustment of complete machine short transverse.No. three branch
Leg 4 is bridge formation owner's bearing force props, is supported in pier top under state of setting a roof beam in place, under via state as the power resources of complete machine via and
No. two cooperations of supporting leg 3 push Bridge Erector via.During heavy duty is set a roof beam in place, the large-tonnage support cylinder 4c of No. three supporting legs 4 configuration,
It is unloaded convenient for complete machine, removes hanging spiral, greatly improve work efficiency；During via, No. three supporting legs utilize anchoring strut
4d is anchored with bridge floor spiral has been set up.
As shown in Figure 10 to Figure 13, No. four supporting legs 5 include outer sleeve column 5a, jacking cylinder 5b, interior sleeve column 5c, bottom end rail 5d and
The both lateral sides of running mechanism 5f, 1 lower section of main frame have been bolted outer sleeve column 5a, and interior sleeve column 5c sliding sleeves are set to outer sleeve column
It is fixed in 5a and using alignment pin positioning, jacking cylinder 5b is connected between interior sleeve column 5c and outer sleeve column 5a, passes through jacking cylinder
The lift in height of No. four supporting legs 5 may be implemented in 5b, to adapt to the construction demand of different head falls.；Lead between sleeve column 5c in two
Cross bottom end rail 5d connections.
Bottom end rail 5d is divided into two sub- crossbeams by boundary of its center, passes through the detachable fixation of bolt between two sub- crossbeams
Connection, every is all provided with rack gear between sub- crossbeam and interior sleeve column 5c, rack gear includes being located under interior sleeve column 5c
The guide bracket 5e in portion, the driving gear 5g being arranged on guide bracket 5e and the rack 5h being arranged along the horizontal on sub- crossbeam, sub- crossbeam
Cooperation is slid laterally with corresponding guide bracket 5e, driving gear 5g is meshed with corresponding rack 5h；The bottom of every sub- crossbeam is equal
Connect running mechanism 5f.
When Bridge Erector via, running mechanism 5f is run on the track that bridge floor is laid with；Between bottom end rail 5d and interior sleeve column 5c
Rack gear is connected, when girder erection by bridging machine, bottom end rail 5d middle bolt fastenings are removed, and it is horizontal to pass through rack gear bottom end rail 5d
To opening, beam car is from bridge formation drive end unit feeding beam.
As shown in Figure 1, Overhead travelling crane system includes in the main overhead traveling crane 6 run on 1 outside vertical shift track of main frame and in main frame
The assistant crown block 7 run on 1 inside vertical shift track of frame, is independent of each other between main overhead traveling crane 6 and assistant crown block 7.
As shown in Figure 14 and Figure 15, main overhead traveling crane 6 includes hoisting system 6a, transverse-moving mechanism 6b, overhead traveling crane door frame 6c, walking system
6d and crown block sling 6e, hoisting system 6a are fixed on transverse-moving mechanism 6b, and transverse-moving mechanism 6b is placed on horizontal at the top of overhead traveling crane door frame 6c
It opposite can be slided between Liang Shang, transverse-moving mechanism 6b and overhead traveling crane door frame 6c, the 6c connections of overhead traveling crane door frame walking system 6d, hoisting system 6a
It is connect with crown block sling 6e by steel wire rope, crown block sling 6e is provided with three-dimensional adjusting device；Crown block sling 6e the degree of automation
Height is, it can be achieved that 360 ° rotate, and by three-dimensional adjusting device, realize the adjustment of beam sections aerial statue, make beam sections exactitude position.
Crown block sling 6e uses the prior art with three-dimensional adjusting device.
As shown in Figure 16 and Figure 17, assistant crown block 7 includes hoisting system 7a, overhead traveling crane door frame 7b and walking system 7c, raising
System 7a is mounted on overhead traveling crane door frame 7b, overhead traveling crane door frame 7b connection walking systems 7c.
As shown in Figure 18 to Figure 22, hangar system 8 is made of multiple hanging units, and each hanging unit includes by hanging
Bar 8d is arranged in the main beam 8a of 1 lower section of main frame, and sunpender 8d selects spiral, wherein the longer one group of hanging list of sunpender
Member is referred to as long hanging, and one group of shorter hanging unit of sunpender is referred to as drop shot extension, and the top of the sunpender 8d of long hanging passes through master
The bracket in 1 outside of frame is simultaneously clamped by the fastening nut of arranging and the bracket, and the top for the sunpender 8d that drop shot is hung passes through master
Frame 1 is simultaneously clamped by the fastening nut of arranging and main frame 1；
The sunpender 8d of each hanging unit is equipped with four, wherein two sunpender arranged for interval are in the left side of main beam 8a and lead to
Fixed seat 8c is crossed to connect with main beam 8a, under the fixed seat that fixed seat 8c includes with main beam 8a is fixedly connected seat and with it is corresponding
The fixed seat seat of honour of two sunpenders connection, the fixed seat seat of honour has just connect with seat under fixed seat；Other two sunpender arranged for interval are in master
The right side of crossbeam 8a is simultaneously connect by free bearing 8b with main beam 8a, and the free bearing 8b includes the free bearing being fixedly connected with main beam 8a
Lower seat and the free bearing seat of honour connected with corresponding two sunpenders, the free bearing seat of honour is hinged by axis pin with seat under free bearing, meets and sets up
The requirement of curve circuit.
In the construction process, hangar system 8 is connect with the suspender of main overhead traveling crane 6, complete beam sections lifting and beam block in length and breadth
The adjustment operation on slope realizes that the conversion of suspender and the suspension sunpender load of main frame 1, sunpender use finish rolling screw thread by main overhead traveling crane 6
Bar connecting hangs generally 4 stress, 3 points of balances.Bridge Erector is in feeding beam after adapting to bridge, by long hanging and short
The special arrangement of hanging, feeding beam is put without staggered floor after ensureing segment beam bridge, safe efficient.
In the present embodiment, the hangar system 8 is set by two sets of long hangings and nine sets of drop shot dossals and is formed, wherein a set of drop shot
It hangs and is located at center, the longitudinally outboard which hangs is symmetrically arranged two sets of length hangings, the longitudinally outboard of two sets long hanging
Remaining eight sets of drop shots are symmetrically arranged to hang.
As shown in figure 23 and figure 24, wet joint template system 9 includes hydraulic cylinder 9a, hanging external fin 9b, side form system 9c
With bed die system 9d, 1 upper edge longitudinal arrangement of main frame is provided at least one set of hanging external fin unit, and every group of hanging external fin unit is equal
The hanging external fin 9b for being separately positioned on 1 left and right sides of main frame including two, hanging external fin 9b and 1 outside of main frame are hinged, and
And connection rotary oil cylinder 9a forms rotatable system, side form system 9c and bed die system 9d between hanging external fin 9b and main frame 1
It is connect with hanging external fin 9b by adjusting strut；
When wet joint template system is in molding state, two hanging external fin 9b of same group of hanging external fin unit drive with
Its side form system 9c connected and the 9d docking of bed die system；When wet joint template system is in die opening state, outside same group of hanging
Two hanging external fin 9b of rib unit drive side form system 9c connected to it and the 9d separation of bed die system.
It is molded by hydraulic system when pouring wet seam, external mold, to drawing, prevents from pouring wet connect by spiral and internal model
Spillage when seam, after the completion of pre-stressing tendon tensioning, wet seam reaches some strength rank, removes screw-thread steel of the interior external mold to drawing
Muscle makes hanging external fin 9b Unscrews by hydraulic cylinder 9a, and when Bridge Erector via, wet joint template 9 can avoid bridge pier, operation
It is simple and convenient, securely and reliably.
As shown in Figures 2 and 3, main frame 1 includes box girder 1a and the truss for being fixedly connected on the both ends box girder 1a
Nose girder 1b, and main frame 1 is laterally symmetrical structure, centre is connected using connection beam mechanism；Two vertical shifts are arranged in 1 top surface of main frame
Track is used for 7 traveling of main overhead traveling crane 6 and assistant crown block；
The connection beam mechanism includes two connection beam 11c being correspondingly arranged with No. two supporting legs 3 and No. three supporting legs 4, is located at
Two connection beam 21d in 1 centre position of the main frame and connection beam 31e for being located at 1 rear end of main frame, connection beam 11c are box
Structure is bolted with box girder 1a, and connection beam 21d is box-structure, is connect with box girder 1a axis pins and forms transverse direction
Rotatable engagement, connection beam 31e are truss structure, are connect with truss nose girder 1b axis pins
Rigid structure is integrally formed in the main frame 1, and stress is clear, and stability is good.
The concrete operating principle of the utility model is as follows：
It sets a roof beam in place state：No. two supporting legs 3 and No. three support main frames 1 of supporting legs 4, beam car fortune beam sections to drive end unit of building bridge,
Beam sections, are arranged on main frame 1 by 6 bale handle of main overhead traveling crane successively, and each beam sections 3 d pose is adjusted using main overhead traveling crane 6, complete
Wet joint concrete → equal strength → the prestress steel of the wet joint template → cast of the wet joint size → installation of exactitude position → adjustment
Muscle Shu Zhangla → wet the joint template of opening；After the completion of whole hole tensioning, No. two supporting legs 3 and No. three 4 oil cylinders of supporting leg are shunk, and complete machine is unloaded
It carries, removes hanging, hanging is carried to beam car using assistant crown block 7 before Bridge Erector via, is transported to Liang Chang.Bridge Erector completes one
Bridge, which is set up, prepares via.
Via state：Main overhead traveling crane 6 and the operation of assistant crown block 7 utilize No. two supporting legs 3 and No. three branch to No. three 4 tops of supporting leg
The hydraulic system of leg 4 pushes 18.4 meters of vertical shift forward of main frame 1, No.1 supporting leg 2 to reach front pier top pinner Support Position, adjustment
2 support cylinder of No.1 supporting leg is supported in front pier top；No. three supporting legs 4 and No. two supporting legs 3 distinguish via to front bridge floor and pier top
Support；No.1 of coming to nothing supporting leg 2,3, No. three supporting legs 4 of No. two supporting legs and No. four supporting legs 5 support, and start No. two supporting legs 3 and No. three supporting legs
4 hydraulic system pushes 31.6 meters of 1 vertical shift of main frame, reaches position of setting a roof beam in place.
As shown in Figure 25 to Figure 37, the utility model provides the construction for the Bridge Erector constructed by cross for precast segmental beam
Method is constructed according to the following steps：
1 carries out operation of setting a roof beam in place by girder erection by bridging machine process；
2 carry out via operation by Bridge Erector via process；
3 carry out cycle operation according to bridge length, step 1 to step 2, until a construction section completes；
As shown in Figure 25 to Figure 27, the girder erection by bridging machine process carries out according to the following steps successively：
Step 1：
1, Bridge Erector via in place, opens main frame connection beam 21d, prepares to set a roof beam in place；
2, beam car transports beam sections to drive end unit of building bridge, 6 bale handle of main overhead traveling crane, successively by number one beam sections to No. eight section
The drop shot that Duan Liang is arranged in 1 lower section on main frame is hung up；
3, main frame connection beam 21d is closed；
Step 2：
1, main overhead traveling crane 6 puies forward No. nine beam sections to No. ten beam sections and is arranged in the long hanging of 1 lower section of main frame；
2, main overhead traveling crane 6 puies forward ride on Bus No. 11 beam sections, and the drop shot that 1 lower section of main frame is suspended on after rotation is hung up；
3, main overhead traveling crane 6, which promotes No. nine beam sections to the corresponding long hanging of No. ten beam sections, makes beam sections to assembled position
It sets；
Step 3：
1, be sequentially adjusted in each beam sections 3 d pose using main overhead traveling crane 6, complete the wet joint size of exactitude position → adjustment →
Wet joint concrete → the equal strength of wet joint template → cast → pre-stressing tendon tensioning → wet joint template of opening is installed；
2, after the completion of whole hole tensioning, the jacking cylinder of 3, No. three supporting legs 4 of No. two supporting legs is shunk, and hanging is removed in complete machine unloading
Hanging is carried to beam car before Bridge Erector via using assistant crown block 7, is transported to Liang Chang by system 8；
As shown in Figure 28 to Figure 33, the Bridge Erector via process carries out according to the following steps successively：
Step 1：
1, Bridge Erector prepares via；
2, all sunpender 8d of hangar system are lifted up about 3.5 meters；
3, No. two supporting legs 3 and No. 1 pre-buried spiral in beam sections beam face are anchored using strut；
Step 2：
1, No. two supporting legs 3 and No. three supporting legs 4 support when via, and No.1 supporting leg 2 and No. four supporting legs 5 are in state of coming to nothing, main
Overhead traveling crane 6 and the operation of assistant crown block 7 are pushed away to No. three 4 tops of supporting leg using the hydraulic pushing mechanism of No. two supporting legs 3 and No. three supporting legs 4
18.4 meters of vertical shift, No.1 supporting leg 2 reach front pier top Support Position to dynamic main frame 1 forward；
2,2 oil cylinder of adjustment No.1 supporting leg, makes No.1 supporting leg 2 be supported in front pier top；
Step 3：
1, main overhead traveling crane 6 and assistant crown block 7 are run to No. two 3 tops of supporting legs, 2, No. two supporting legs 3 of No.1 supporting leg and No. four supporting legs
5 supports, No. three 4 oil cylinders of supporting leg are shunk, and No. three supporting legs 4 is made to be in state of coming to nothing；
2, start No. three supporting legs 4 hydraulic pushing mechanism, No. three supporting legs 4 voluntarily via to front set up bridge floor position away from
2 meters of pier center supports No. three supporting legs 4, and is anchored with beam face；
Step 4：
1, it releases No. two supporting legs 3 to anchor with beam face, 2, No. three supporting legs 4 of No.1 supporting leg and No. four supporting legs 5 support, No. two supporting legs
3 oil cylinders are shunk, and No. two supporting legs 3 is made to be in state of coming to nothing；
2, start No. two supporting legs 3 hydraulic pushing mechanism, No. two supporting legs 3 voluntarily via to front pier top away from pier center
900mm, No. two supporting legs 3 support on the pinner of front, and utilize anchoring strut 3e by No. two supporting legs 3 and the pre-buried spiral of pier top
It is anchored；
Step 5：
1, to front truss nose girder position, No. four supporting legs 5 are laid with track, No. two supporting legs for main overhead traveling crane 6 and the operation of assistant crown block 7
3, No. three supporting legs 4 and No. four supporting legs 5 support, and No.1 supporting leg 2 comes to nothing, and starts the hydraulic pushing machine of No. two supporting legs 3 and No. three supporting legs 4
Structure pushes 1 vertical shift pre-determined distance of main frame, 12 meters of pauses；
2, No. four 5 oil cylinders of supporting leg are shunk, come to nothing No. four supporting legs 5, and No. two supporting legs 3 and No. three supporting legs 4 support；
Step 6：
1, start 19.6 meters of 1 vertical shift of hydraulic pushing mechanism urges main frame of No. two supporting legs 3 and No. three supporting legs 4, until reaching
To position of setting a roof beam in place；
2, Bridge Erector via in place, connects the anchoring axis pin of No. two supporting legs 3, No. three supporting legs 4 and main frame 1, releases No. two
Supporting leg 3 is anchored with pier top, adjusts the sunpender of hangar system, the bottom end rail 5d of No. four supporting legs 5 is laterally-opening；
3, prepare to set a roof beam in place.
Wherein, when No.1 supporting leg 2 reaches front pier top Support Position in the step of Bridge Erector via process two, No.1
Supporting leg 2 deviate bridge pier center line distance 1190mm, start traversing process at this time, as shown in Figure 34 to Figure 37, traversing process press with
Lower step carries out：
Step a：Start No. two supporting legs 3 in displacement trolley 3a to the inside of deflection curve propulsion 400mm, main frame 1 with
No. three supporting legs 4 are fixed point rotary；No.1 supporting leg deviates bridge pier center line 400mm at this time；
Step b：Start No. three supporting legs 4 in displacement trolley 4a to the outside of deflection curve propulsion 400mm, main frame 1 with
No. two supporting legs 3 are fixed point rotary；No.1 supporting leg center and bridge pier center line are tangent at this time；
After traversing process has carried out, 2 oil cylinder of adjustment No.1 supporting leg, makes one in the step of connecing the Bridge Erector via process two
Number supporting leg 2 is supported in front pier top.
Above example is only to illustrate and unrestricted the technical solution of the utility model, although with reference to above-described embodiment pair
The utility model is described in detail, it will be understood by those of ordinary skill in the art that：Still can to the utility model into
Row modification or equivalent replacement should all without departing from any modification or partial replacement of the spirit and scope of the utility model
Cover in the right of the utility model.
Claims (2)
1. the open-close type leg structure for Bridge Erector of constructing by cross for precast segmental beam, including it is set to main frame（1）The four of rear end
Number supporting leg（5）, it is characterised in that：No. four supporting legs（5）Including outer sleeve column（5a）, jacking cylinder（5b）, interior sleeve column（5c）, under
Crossbeam（5d）And running mechanism（5f）, main frame（1）The both lateral sides of lower section have been bolted outer sleeve column（5a）, interior sleeve column
（5c）Sliding sleeve is set to outer sleeve column（5a）In and using alignment pin positioning fix, interior sleeve column（5c）With outer sleeve column（5a）Between connect
Connect jacking cylinder（5b）；Sleeve column in two（5c）Between pass through bottom end rail（5d）Connection；
Bottom end rail（5d）It is divided into two sub- crossbeams using its center as boundary, it is detachable between two sub- crossbeams to be fixedly connected, each
Sub- crossbeam and interior sleeve column（5c）Between be all provided with rack gear, rack gear includes being located at interior sleeve column（5c）It leads lower part
Seat（5e）, be arranged in guide bracket（5e）On driving gear（5g）And the rack being arranged along the horizontal on sub- crossbeam（5h）, son cross
Beam and corresponding guide bracket（5e）Slide laterally cooperation, driving gear（5g）With corresponding rack（5h）It is meshed；Every sub- crossbeam
Bottom be all connected with running mechanism（5f）.
2. the open-close type leg structure of Bridge Erector according to claim 1 of constructing by cross for precast segmental beam, feature
It is：It is fixedly connected between described two sub- crossbeams by the way that bolt is detachable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720586038.0U CN207633219U (en) | 2017-05-24 | 2017-05-24 | It constructs by cross for precast segmental beam the open-close type leg structure of Bridge Erector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629433A (en) * | 2018-12-29 | 2019-04-16 | 腾达建设集团股份有限公司 | Bridge Erector paving helps support leg device and the method for bridge construction based on auxiliary leg |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629433A (en) * | 2018-12-29 | 2019-04-16 | 腾达建设集团股份有限公司 | Bridge Erector paving helps support leg device and the method for bridge construction based on auxiliary leg |
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