CN203807947U - Fixed-point hoisting type bridge girder erection machine - Google Patents
Fixed-point hoisting type bridge girder erection machine Download PDFInfo
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- CN203807947U CN203807947U CN201420184015.3U CN201420184015U CN203807947U CN 203807947 U CN203807947 U CN 203807947U CN 201420184015 U CN201420184015 U CN 201420184015U CN 203807947 U CN203807947 U CN 203807947U
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Abstract
The utility model discloses a fixed-point hoisting type bridge girder erection machine which is characterized in that the bridge girder erection machine is mainly composed of a main beam, a front supporting leg, a middle supporting leg, a rear supporting leg, a girder hoisting crown block, side arms, a girder pushing channel and a hydraulic and electrical control system; the main beam is of an across type double-beam structure and is formed by horizontally connecting a front set, a middle set and a rear set, and crown block rails are arranged on the top of the main beam; the girder hoisting crown block is mounted on the crown block rails, and the front supporting leg is fixedly mounted under the front end of the main beam; the rear supporting leg is fixedly mounted under the tail of the main beam, and the middle supporting leg is mounted under the middle of the main beam of the bridge girder erection machine; each side arm is composed of a cantilever beam, a sliding beam, a lateral-moving system and a hoisting arm, and the side arms are mounted on the two outer sides of the main beam symmetrically with the axis of the bridge girder erection machine as the center; the upper ends of bottom horizontal supports and inclined supports are connected, and the lower ends of the bottom horizontal supports are fixedly connected with the top face of a girder pushing bottom plate; the girder pushing channel is composed of two girder pushing rails, a supporting bottom plate, a butt joint mechanism and a mounting truss. According to the bridge girder erection machine, the number and energy consumption of the crown block can be reduced, the bridge girder erection steps are simple and easy to implement, operation is convenient, and safety and reliability are achieved.
Description
Technical field
The utility model relates to Bridge Erector technology, and particularly feeding beam process adopts the one fixed point hoisting type Bridge Erector and the bridging method that push away beam type method.
Background technology
Existing Bridge Erector is in work progress, and mainly by carrying on the back, beam dolly transports (in fixed point lifting) to feeding beam operation or overhead traveling crane automatic moving (in non-fixed point is lifted by crane) completes.No matter be the feeding beam process of that form, all need heavy-duty motor to drive wheels, arrive assigned address along definitive orbit, then the beam operation that falls.Because the weight of prefabricated case beam is very heavy, feeding beam process is very slow, and efficiency is low; And in non-fixed point lifting, very high to the requirement of wirerope, its maintenance cost is corresponding increase also; In addition, the power consumption of feeding beam process is also very high.
Set a roof beam in place in process at fixed point hoisting type, for the ease of feeding beam, design Liao Xia nose girder mechanism.But, after bale handle and fall before beam, need lower nose girder reach via hole so that the beam process that falls carries out smoothly, in order to make the lower nose girder can via hole, need for its separately two groups of overhead traveling cranes of design carry out handling via hole (referring to patent 200520143695.5).Therefore, fixed point hoisting type Bridge Erector has two via hole processes, descends nose girder via hole and main frame via hole, and its operation and structure are all more complicated as seen.
Set a roof beam in place in process at non-fixed point hoisting type, someone has designed a kind of two straddle type Bridge Erectors (referring to patent 201020637897.6).Its overhead traveling crane is hanging beam walking on girder, the beam that falls after arrival assigned address, although via hole process only has a main frame via hole, operation is simple, and, beam-hanging traveling crane need to back and forth travel, and plays counterweight effect, the enforcement of guarantee Bridge Erector via hole.
Somebody has designed another kind of non-fixed point hoisting type Bridge Erector (referring to patent 200320125953.8).This Bridge Erector is a straddle type structure, and it has lower nose girder mechanism, and lower nose girder needs the auxiliary via hole of an independent overhead traveling crane.When feeding beam, the movement that needs the movement of girder top beam-hanging traveling crane and prefabricated case beam below to carry beam dolly on the back is synchronously carried out, and control accuracy is had relatively high expectations.
Summary of the invention
For the deficiencies in the prior art, the technical problem that the utility model quasi-solution is determined is: a kind of fixed point hoisting type Bridge Erector is provided, this Bridge Erector can be separated the incompatibility problem of commit point lifting and lower nose girder in bridge erection process, and reduce overhead traveling crane quantity and energy consumption, the step of simultaneously setting a roof beam in place is simple, convenient operation, and ensure safe and reliable.
The technical scheme that the utility model solves described Bridge Erector technical problem is: a kind of fixed point of design hoisting type Bridge Erector, it is characterized in that this Bridge Erector mainly by girder, front leg strut, middle supporting leg, rear support leg, beam-hanging traveling crane, side arm, push away beam passage and hydraulic pressure and electrical control system and form;
Described girder is the two main beam structures of two straddle types, by before, during and after three groups of intermediate cross frames connect, top is provided with overhead crane orbit; Beam-hanging traveling crane is installed on the overhead crane orbit at girder top, and both sides are provided with hydraulic pressure creep machine before and after beam-hanging traveling crane, makes the beam-hanging traveling crane can horizontal and vertical short-distance movement;
Described front leg strut is telescopic supporting leg, is fixedly installed in girder front end below, front leg strut lower end and bridge pier anchoring; Described rear support leg is O shape supporting leg, is fixedly installed in girder afterbody below; Described rear support leg is mainly by O type supporting leg main body with push away beam base plate rear support and form;
Described middle supporting leg is upright supporting leg, is telescopic supporting leg, and flexible power is provided by hydraulic cylinder, is installed on below, crane ' s major girder middle part, lower end and bridge pier anchoring; Described middle supporting leg top is provided with hanging walking mechanism and girder supporting mechanism; Described middle supporting leg middle and lower part is provided with and pushes away beam base plate front support and push away the affixed mechanism of beam base plate; The described affixed mechanism of beam base plate that pushes away is connected the front end and the middle supporting leg that push away beam base plate;
Described side arm is made up of outrigger, sliding beam, sidesway system and arm, is installed on the outer both sides of girder by Bridge Erector axis symmetry; Crane ' s major girder lateral surface is fixed in described outrigger one end, and the other end is connected with sliding beam top; Described sliding beam is box cantilever construction, and one end is fixedly installed in the latter half outside crane ' s major girder; Described sliding beam inside has sidesway system; Described arm is half U-shaped structure, is supported and is formed by top rising structure, middle part bearing diagonal and bottom transverse; In the time of feeding beam, arm, by location, is fixed with sliding soffit; After beam-hanging traveling crane bale handle, remove sliding beam and be connected with arm, be connected with arm top rising structure by sidesway system; Bottom transverse supports upper end and is connected with bearing diagonal, lower end with push away beam bottom plate top surface and be fixedly connected with;
Described sidesway system is made up of motor, reducer and check mechanism, wheel shaft, wheel, bearing support, sidesway track, supporting seat and hydraulic cylinder; Described track is fixedly installed in sliding beam inner bottom surface; Described motor, reducer and check mechanism, bearing support are fixedly installed on supporting seat; Arrange to both sides by sliding beam is middle successively, wheel shaft connection reducer and check mechanism and wheel, wheel is placed in track top; Described hydraulic cylinder is fixedly installed in supporting seat bottom; Described supporting seat is fixedly connected with arm;
The described beam passage that pushes away pushes away beam orbit, support baseboard, docking mechanism and installation truss by two and forms; The described beam orbit that pushes away is installed on support baseboard top; Described support baseboard is box-structure, and medial surface is provided with docking mechanism, and top and side arm bottom transverse support bolt; Described installation truss is placed in the bottom of a left side (or right) side support baseboard and buttcover plate thereof, and it is shorter in length than support baseboard.
Compared with prior art, the beneficial effect of the utility model fixed point hoisting type Bridge Erector and bridging method is:
1. power consumption reduces.The utility model Bridge Erector adopts and pushes away the design of beam type feeding beam, and feeding beam adopts hydraulic-driven beam sheet, overcomes the frictional force between bottom wheel and track, is a kind of advanced person's type of drive, and energy consumption is low, can also reduce the pollution to surrounding environment; Two beam-hanging traveling crane fixed points lifting of the utility model Bridge Erector, does not need to do long distance moving, and the more non-fixed point lifting method of energy of consumption significantly reduces.
2. simple in structure, safety is good.The utility model Bridge Erector is two straddle type structures, and freely-supported is set a roof beam in place, stressed clear and definite, safe and reliable; Feeding beam process is low bit manipulation, and after high bit overhead traveling crane bale handle, the process of feeding beam is safer; Fixed point hoisting type hanging beam mode has also increased its safety; Push away beam process and be a stable process of at the uniform velocity pushing ahead, impact littlely, middle supporting leg and the rear support leg of anchoring provide support reaction, make this Bridge Erector erection process safer.
3. the step of setting a roof beam in place is simplified, and efficiency improves.Setting a roof beam in place in processing step of the utility model Bridge Erector, Luo Liangqian does not need beam to improve, and without overcoming gravity, has reduced the consumption of energy, has simplified operating procedure, has improved operating efficiency; Meanwhile, adopt the beam transporting passage technical scheme of laterally opening, closing up to save to carry on the back that beam dolly returns and lower nose girder via hole step, work continuously, further improved operating efficiency;
4. the utility model can be applicable to the propelling of section box girder safe and efficiently and set up, and uses the railway box erection of middle span, also suitablely in highway and Urban Bridge, uses, and has broad applicability.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of a kind of embodiment of the utility model fixed point hoisting type Bridge Erector;
Fig. 2 is side arm structure (A-A in Fig. 1) schematic diagram of a kind of embodiment of the utility model fixed point hoisting type Bridge Erector;
Fig. 3 is sidesway system architecture (B-B in Fig. 2) schematic diagram of a kind of embodiment of the utility model fixed point hoisting type Bridge Erector;
Fig. 4-1, to Fig. 4-8th, utilizes the beam erecting method processing step schematic diagram of a kind of embodiment of the utility model fixed point hoisting type Bridge Erector.
Detailed description of the invention
Further narrate the utility model below in conjunction with embodiment and accompanying drawing thereof, specific embodiment does not limit the protection domain of the application's claim.
The fixed point hoisting type Bridge Erector of the utility model design (is called for short Bridge Erector, referring to Fig. 1-4) mentality of designing be: for the hoisting type Bridge Erector of fixing a point, two straddle type structures, push away beam type design, pushing away beam employing hydraulic pressure is power source, promotes the feeding beam that moves forward of prefabricated case beam, to assigned address, carry out again bale handle, after beam passage sidesway to be pushed away, then the beam that falls, close up and the operation such as via hole.
The utility model Bridge Erector be characterised in that this Bridge Erector mainly by girder 2, front leg strut 5, middle supporting leg 6, rear support leg 1, beam-hanging traveling crane 3, side arm 4, push away beam passage 7 and hydraulic pressure and electrical control system and form (referring to Fig. 1).
Described girder 2 is the two main beam structures of two straddle types, by before, during and after three groups of intermediate cross frames connect, top is provided with overhead crane orbit 2.1;
Described beam-hanging traveling crane 3 is installed on the overhead crane orbit 2.1 at girder 2 tops, adopts the hanging beam mode of fixed point lifting; Beam-hanging traveling crane 3 both sides, front and back are provided with hydraulic pressure creep machine 3.1, can carry out horizontal and vertical short-distance movement, push away to adjust the error that beam process produces, and ensure the precision of beam and the safety beam that falls;
Described front leg strut 5 is fixedly installed in girder 2 front ends belows, is telescopic supporting leg, lower end can with bridge pier anchoring; Described rear support leg 1 is O shape supporting leg, is fixedly installed in girder 2 afterbody belows; Described rear support leg 1 is mainly by O type supporting leg main body 1.1 with push away beam base plate rear support 1.2 and form; Described base plate rear support 1.2 is for supporting the tail end that pushes away beam base plate 7.2;
Described middle supporting leg 6 is upright supporting leg, is telescopic supporting leg, and flexible power is provided by hydraulic cylinder, is installed on crane ' s major girder 2 belows, middle parts, lower end can with bridge pier anchoring; Described middle supporting leg 6 tops are provided with hanging walking mechanism 6.1 and girder supporting mechanism 6.2; Described hanging walking mechanism 6.1 is for the reach of the middle supporting leg 6 of Bridge Erector erection process; Described girder supporting mechanism 6.2 is for Bridge Erector main frame via hole operation, as the front end strong point; Middle supporting leg 6 middle and lower parts are provided with and push away beam base plate front support 6.3 and push away the affixed mechanism 6.4 of beam base plate; Described support and the guiding that pushes away beam base plate front support 6.3 and push away when pushing away beam passage 7 sidesway beam base plate 7.2 front ends; The described affixed mechanism 6.4 of beam base plate that pushes away is connected the front end and the middle supporting leg 6 that push away beam base plate 7.2, ensure push away Bridge Erector in beam process steadily;
Described side arm 4 is made up of outrigger 4.1, sliding beam 4.2, sidesway system 4.3 and arm 4.4, is installed on the outer both sides of girder 2 (referring to Fig. 2) by Bridge Erector axis symmetry; Crane ' s major girder 2 lateral surfaces are fixed in described outrigger 4.1 one end, and the other end is connected with sliding beam 4.2 tops; Described sliding beam 4.2 is box cantilever construction, and one end is fixedly installed in crane ' s major girder 2 outside the latter halfs; Described sliding beam 4.2 inside have sidesway system 4.3; Described arm 4.4 is half U-shaped structure, supports 4.4.3 form by top rising structure 4.4.1, middle part bearing diagonal 4.4.2 and bottom transverse; In the time of feeding beam, arm 4.4, by location, is fixed with sliding beam 4.2 bottom surfaces; After beam-hanging traveling crane 3 bale handles, remove sliding beam 4.2 and be connected with arm 4.4, be connected with arm top rising structure 4.4.1 by sidesway system 4.3; Bottom transverse supports 4.4.3 upper end and is connected with bearing diagonal 4.4.2, lower end with push away beam base plate 7.2 end faces and be fixedly connected with;
Described sidesway system 4.3 is made up of motor 4.3.6, reducer and check mechanism 4.3.5, wheel shaft 4.3.2, wheel 4.3.3, bearing support 4.3.4, sidesway track 4.3.1, supporting seat 4.3.7 and hydraulic cylinder 4.3.8; (referring to Fig. 3) described track 4.3.1 is fixedly installed in sliding beam 4.2 inner bottom surface; Described motor 4.3.6, reducer and check mechanism 4.3.5, bearing support 4.3.4 are fixedly installed on supporting seat 4.3.7; Arrange to both sides by sliding beam 4.2 is middle successively, wheel shaft 4.3.2 connection reducer and check mechanism 4.3.5 and wheel 4.3.3, wheel 4.3.3 is placed in track 4.3.1 top; Described hydraulic cylinder 4.3.8 is fixedly installed in supporting seat 4.3.7 bottom; Described supporting seat 4.3.7 is fixedly connected with arm 4.4;
In the time of feeding beam, be supported in sliding beam 4.2 bottoms by hydraulic cylinder 4.3.8; After beam-hanging traveling crane 3 will be mentioned wait setting a roof beam in place, piston rod shrinks, hydraulic cylinder 4.3.8 falls, make sidesway system 4.3 whereabouts certain altitudes, be supported on track 4.3.1 by wheel 4.3.3, be used for carrying whole arm 4.4 and push away beam passage 7, the actuating motor 4.3.6 certain distance of advancing laterally, for the beam that falls reserves sufficient space (referring to Fig. 4-3);
The described beam passage 7 that pushes away pushes away beam orbit 7.1, support baseboard 7.2, docking mechanism 7.3 and truss 7.4 is installed by two and forms; The described beam orbit 7.1 that pushes away is installed on support baseboard 7.2 tops; Described support baseboard 7.2 is box-structure, and medial surface is provided with docking mechanism 7.3, and top and side arm bottom transverse support 4.4.3 bolt; Described installation truss 7.4 is placed in the bottom of a left side (or right) side support baseboard and buttcover plate thereof, and it is shorter in length than support baseboard 7.2(referring to Fig. 1,2).
Described hydraulic pressure and electrical control system are prior art.
The utility model has designed the bridge formation process that uses the utility model Bridge Erector simultaneously, its main erection process or processing step following (referring to Fig. 4-1-Fig. 4-7):
1. Bridge Erector is in place: Bridge Erector assembles, and treats on position, frame hole (referring to Fig. 4-1) in treating frame state, being placed in;
2. fortune beam: Beam transportation vehicle is packed prefabricated case beam arrival and set up scene, and Beam transportation vehicle front end and Bridge Erector beam transporting passage are connected and fixed (referring to Fig. 4-1) by transition;
3. feeding beam: the beam mechanism urges precast beam that pushes away of Beam transportation vehicle progresses into and pushes away beam passage 7 from Beam transportation vehicle, when specifying station, skidding, stops pushing away beam (referring to Fig. 4-2);
4. hanging beam: beam-hanging traveling crane 3 is transferred suspender, and beam is slightly mentioned, makes precast beam just depart from and push away beam orbit 7.1, does not need to improve too many (referring to Fig. 4-2);
5. beam transporting passage sidesway: remove sliding beam 4.2 and be connected with arm 4.4, sidesway system 4.3 hydraulic cylinder piston rods shrink, and make sidesway system 4.3 and arm 4.4 whereabouts certain altitudes, pushes away beam orbit 7.1 and departs from wheel; Sidesway system 4.3 drives arm 4.4 and pushes away beam passage 7 along the interior sidesway track of sliding beam 4.2 4.3.1 to both sides translation, bottom is supported by the front and back bracing frame 6.4,1.3 of support baseboard, translation distance is slightly larger than the half of deck-siding, to ensure not affect beam (referring to Fig. 4-3);
6. beam falls: beam-hanging traveling crane 3 falls beam, and for ensureing beam precision, hydraulic pressure creep machine 3.1 drives beam-hanging traveling crane 3 to carry out suitably longitudinally fine setting, and beam-hanging traveling crane 3 can laterally be finely tuned (referring to Fig. 4-3,4-4) voluntarily;
7. beam transporting passage closes up: sidesway system 4.3 drives arm 4.4 and pushes away beam passage 7 and returns along sidesway track 4.3.1, and bottom is supported by the front and back bracing frame 6.4,1.3 of support baseboard; After assigned address, stop, by hydraulic cylinder, 4.3.8 supports; Push away beam passage 7 and link together by docking mechanism 7.3, by manually operation on truss 7.4 being installed, if produce difference in height, can use the auxiliary correction of beam-hanging traveling crane 3, so that operation; Fixed support base plate 7.2 tail ends and rear support leg 1(are referring to Fig. 4-5,4-6);
8. Bridge Erector via hole: middle supporting leg 6 moves forward by hanging walking mechanism 6.1, to front leg strut 5 places anchoring, middle supporting leg top girder supporting mechanism 6.2 supports crane ' s major girder 2 front ends; The front leg strut 3 micro-receipts in lower end, rear support leg 1 is converted to walking states by holding state, promote Bridge Erector main frame along the track of having set a roof beam in place advance one across; Supporting leg 6 and girder fixed support base plate 7.2 front ends and middle supporting leg 6 during (referring to Fig. 4-7) are fixing.Bridge Erector prepares to set up next Kong Liang (referring to Fig. 4-8).
The utility model is not addressed part and is known to the skilled person technology.
Claims (1)
1. a fixed point hoisting type Bridge Erector, it is characterized in that this Bridge Erector mainly by girder, front leg strut, middle supporting leg, rear support leg, beam-hanging traveling crane, side arm, push away beam passage and hydraulic pressure and electrical control system and form;
Described girder is the two main beam structures of two straddle types, by before, during and after three groups of intermediate cross frames connect, top is provided with overhead crane orbit; Beam-hanging traveling crane is installed on overhead crane orbit, and before and after beam-hanging traveling crane, both sides are provided with hydraulic pressure creep machine;
Described front leg strut is telescopic supporting leg, is fixedly installed in girder front end below, front leg strut lower end and bridge pier anchoring; Described rear support leg is fixedly installed in girder afterbody below, mainly by O type supporting leg main body with push away beam base plate rear support and form;
Described middle supporting leg is upright supporting leg, telescopic, and flexible power is provided by hydraulic cylinder, is installed on below, crane ' s major girder middle part, middle supporting leg lower end and bridge pier anchoring; Middle supporting leg top is provided with hanging walking mechanism and girder supporting mechanism; Described middle supporting leg middle and lower part is provided with and pushes away beam base plate front support and push away the affixed mechanism of beam base plate; The described affixed mechanism of beam base plate that pushes away is connected the front end and the middle supporting leg that push away beam base plate;
Described side arm is made up of outrigger, sliding beam, sidesway system and arm, taking Bridge Erector axis both sides outside symmetry is installed on girder; Crane ' s major girder lateral surface is fixed in described outrigger one end, and the other end is connected with sliding beam top; Described sliding beam is box cantilever construction, and one end is fixedly installed in the latter half outside crane ' s major girder; Described sliding beam inside has sidesway system; Described arm is half U-shaped structure, is supported and is formed by top rising structure, middle part bearing diagonal and bottom transverse; In the time of feeding beam, arm, by location, is fixed with sliding soffit; After beam-hanging traveling crane bale handle, remove sliding beam and be connected with arm, be connected with arm top rising structure by sidesway system; Bottom transverse supports upper end and is connected with bearing diagonal, lower end with push away beam bottom plate top surface and be fixedly connected with;
Described sidesway system is made up of motor, reducer and check mechanism, wheel shaft, wheel, bearing support, sidesway track, supporting seat and hydraulic cylinder; Described track is fixedly installed in sliding beam inner bottom surface; Described motor, reducer and check mechanism, bearing support are fixedly installed on supporting seat; Arrange to both sides by sliding beam is middle successively, wheel shaft connection reducer and check mechanism and wheel, wheel is placed in track top; Described hydraulic cylinder is fixedly installed in supporting seat bottom; Described supporting seat is fixedly connected with arm;
The described beam passage that pushes away pushes away beam orbit, support baseboard, docking mechanism and installation truss by two and forms; The described beam orbit that pushes away is installed on support baseboard top; Described support baseboard is box-structure, and medial surface is provided with docking mechanism, and top and side arm bottom transverse support bolt; Described installation truss is placed in the bottom of left or right side support baseboard and buttcover plate thereof, and it is shorter in length than support baseboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184015.3U CN203807947U (en) | 2014-04-16 | 2014-04-16 | Fixed-point hoisting type bridge girder erection machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420184015.3U CN203807947U (en) | 2014-04-16 | 2014-04-16 | Fixed-point hoisting type bridge girder erection machine |
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| CN203807947U true CN203807947U (en) | 2014-09-03 |
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| CN201420184015.3U Withdrawn - After Issue CN203807947U (en) | 2014-04-16 | 2014-04-16 | Fixed-point hoisting type bridge girder erection machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938547A (en) * | 2014-04-16 | 2014-07-23 | 河北工业大学 | Fixed-point lifting type bridge erection machine and bridge erection method |
| CN104299506A (en) * | 2014-10-21 | 2015-01-21 | 西安交通大学 | Wide lane-through type bridge erecting machine teaching aid for teaching |
| CN104805773A (en) * | 2015-05-15 | 2015-07-29 | 武汉通联机器科工有限公司 | Segmental assembled bridge girder erection machine for construction of small curved bridge |
| CN105803951A (en) * | 2016-03-24 | 2016-07-27 | 王文龙 | Mutual track device of supporting system which is fixed or can be opened and closed and guide system |
| CN107974948A (en) * | 2017-12-21 | 2018-05-01 | 谢晓燕 | A kind of new flow type bridge erecting machine |
| CN109083019A (en) * | 2018-09-17 | 2018-12-25 | 安徽德马泰格起重机械有限公司 | A kind of lower guide fixed-point sling erecting bridge machine |
| CN110593130A (en) * | 2019-10-15 | 2019-12-20 | 合肥正浩机械科技有限公司 | Bridge girder erection machine bearing platform and landing leg connection structure |
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2014
- 2014-04-16 CN CN201420184015.3U patent/CN203807947U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938547A (en) * | 2014-04-16 | 2014-07-23 | 河北工业大学 | Fixed-point lifting type bridge erection machine and bridge erection method |
| CN104299506A (en) * | 2014-10-21 | 2015-01-21 | 西安交通大学 | Wide lane-through type bridge erecting machine teaching aid for teaching |
| CN104805773A (en) * | 2015-05-15 | 2015-07-29 | 武汉通联机器科工有限公司 | Segmental assembled bridge girder erection machine for construction of small curved bridge |
| CN104805773B (en) * | 2015-05-15 | 2016-06-29 | 武汉通联路桥机械技术有限公司 | The Segmental assembling bridge-erecting machine of little curved bridge of constructing |
| CN105803951A (en) * | 2016-03-24 | 2016-07-27 | 王文龙 | Mutual track device of supporting system which is fixed or can be opened and closed and guide system |
| CN107974948A (en) * | 2017-12-21 | 2018-05-01 | 谢晓燕 | A kind of new flow type bridge erecting machine |
| CN109083019A (en) * | 2018-09-17 | 2018-12-25 | 安徽德马泰格起重机械有限公司 | A kind of lower guide fixed-point sling erecting bridge machine |
| CN110593130A (en) * | 2019-10-15 | 2019-12-20 | 合肥正浩机械科技有限公司 | Bridge girder erection machine bearing platform and landing leg connection structure |
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