CN111851301A - Bridge erecting machine - Google Patents
Bridge erecting machine Download PDFInfo
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- CN111851301A CN111851301A CN202010656983.XA CN202010656983A CN111851301A CN 111851301 A CN111851301 A CN 111851301A CN 202010656983 A CN202010656983 A CN 202010656983A CN 111851301 A CN111851301 A CN 111851301A
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- bridge
- cantilever beam
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a bridge erecting machine, which mainly comprises: longitudinal main beam, connecting beam, cantilever beam, hoisting overhead traveling crane, walking dolly, preceding landing leg, back landing leg, balancing weight. The longitudinal girders are connected by connecting beams, the cantilever beam is installed above the longitudinal girders, and the slide rail is laid above the cantilever beam, so that the hoisting crown block can freely slide above the cantilever beam, the front end of the longitudinal girder is provided with the front support leg, and the rear end of the longitudinal girder is provided with the rear support leg. The cantilever beam is arranged above the longitudinal main beam, so that the bridge side lifting beam can be realized; the cantilever beam is provided with a balancing weight for ensuring the stability of the bridge girder erection machine during the beam lifting operation. The invention has simple structure, clear mechanism and convenient processing, and can effectively improve the beam dismantling and erecting efficiency.
Description
Technical Field
The invention belongs to the technical field of bridge girder erection machine equipment, and particularly relates to a novel bridge girder erection machine.
Background
With the improvement of national economic strength, the traffic flow is increased year by year, and the traffic load is far higher than the design load of the current year. Meanwhile, the traffic capacity of the urban bridge is increased due to the rapid increase of the traffic flow, the urban bridge is more and more congested, and the updating of the urban bridge is very important and urgent. The main girder replacement is the main form of bridge lifting transformation, most of the urban bridges which are urgently needed to be replaced are concentrated in busy sections in the urban center at present, the buildings are dense, the roads are busy, the operation space is limited, and meanwhile, long-time traffic interruption has great pressure on urban traffic, so that the method has great significance for rapid bridge transformation construction by adopting advanced special equipment.
In order to take the factors of construction standardization, structural universality, overall stability and the like into consideration, the conventional bridge girder erection machine is generally set into a longitudinal symmetrical form, girder erection and girder disassembly operations are realized between two longitudinal main girders, the operation method is generally fixed, the construction operation process is relatively complex, the construction speed is slow, and the requirement of rapid construction in urban area lifting and transformation projects cannot be met. Especially, when the large-scale lifting transformation project with operation space on the beam side is adopted, the construction period is long, and the traditional bridge girder erection machine is not economical enough. Aiming at special construction environment, the equipment is improved, so that the bridge girder erection machine equipment has stronger applicability.
Disclosure of Invention
The invention mainly solves the problems in the prior art and provides a novel stable bridge girder erection machine capable of lifting a girder on the side surface. The cantilever beam length adjusting device is mainly suitable for construction environments with operation spaces on beam sides, and compared with the traditional bridge girder erection machine, the bridge girder erection machine has the outstanding advantages that the structural form of the bridge girder erection machine is simpler, the construction is more convenient and quicker in scenes with the operation spaces on the beam sides, the cantilever length of the cantilever beam can be adjusted by arranging the sliding equipment below the cantilever beam, and meanwhile, the structural stability requirement can be ensured by adjusting the weight of the balancing weight according to the construction environment requirement.
In order to achieve the purpose, the invention provides a novel bridge girder erection machine structure which mainly comprises a longitudinal main girder, a connecting cross beam, a cantilever cross beam, a hoisting crown block, a walking trolley, a front supporting leg, a rear supporting leg and a balancing weight. The longitudinal main beams are mechanically connected together through a connecting beam; a cantilever beam is arranged above the longitudinal main beam, a slide rail is laid above the cantilever beam, and the hoisting overhead traveling crane can freely slide above the cantilever beam along the slide rail; the front end of the longitudinal girder is provided with a front supporting leg, the rear end of the longitudinal girder is provided with a rear supporting leg, the cantilever beam is provided with a balancing weight, and a walking trolley is arranged below the longitudinal girder.
Preferably, the cantilever beam extends out of the outer side of the longitudinal main beam, the extension length of the cantilever beam is determined according to design requirements, and the cantilever beam can realize the operation of lifting the beam outside the bridge side.
Preferably, the balancing weight is installed on one side of the cantilever beam in a mechanical connection mode and used for balancing the overall stability of the bridge girder erection machine, the weight and the installation position of the balancing weight are determined according to design requirements, and the bridge girder erection machine needs to perform anti-overturning checking calculation during girder lifting operation.
Preferably, the walking trolley is arranged below the middle part of the longitudinal main beam, so that the bridge girder erection machine can walk on the operation bridge floor.
Preferably, the bridge girder erection machine is suitable for the operation of lifting prefabricated box girders, T-shaped girders and hollow plate girders with small span of 15-30 m.
Preferably, the longitudinal main beams are composed of box beams with different lengths, and the box beams are connected by high-strength bolts.
Preferably, the cantilever beam adopts a triangular truss structure, the triangular truss structure is formed by welding profile steels, and the triangular truss structure can walk back and forth on the longitudinal main beam; a hoisting crown block is arranged above each cantilever beam, the hoisting crown block can move left and right on the cantilever beam, and a winch, a roller and a steel wire rope are arranged on the hoisting crown block.
Preferably, the front supporting leg and the rear supporting leg are both of telescopic structures, so that the bridge girder erection machine can be stretched up and down in the processes of front and rear movement and hole passing, and meanwhile, a walking system is further designed on the front supporting leg.
Compared with the prior art, the cantilever type cross beam is arranged, so that the bridge side lifting operation is realized, and the construction is more efficient under special working conditions; the counterweight block which is mechanically connected is arranged, and the counterweight can be carried out according to the design requirement, so that the integral stability of the bridge girder erection machine can be ensured; the structure form is simple, the force mechanism is clear, and the processing and the installation are convenient.
Drawings
FIG. 1 is a front cross-sectional view of a novel bridge girder erection machine;
FIG. 2 is a side view of a novel bridge girder erection machine;
FIG. 3 is a top view of a novel bridge girder erection machine;
FIG. 4 is a cross-sectional view of a longitudinal main beam;
FIG. 5 is a schematic view of a longitudinal main beam segment;
FIG. 6 is a schematic view of a cantilever beam;
FIG. 7 is a schematic view of a beam dismantling process of the novel bridge girder erection machine;
fig. 8 is a schematic diagram of a novel bridge girder erection machine via hole process.
In the figure: 1-longitudinal main beam; 2, connecting the cross beam; 3-cantilever beam; 4, a walking trolley; 5, a pulley; 6, hoisting a crown block; 7-a balancing weight; 8-front support leg; 9-rear support leg.
Detailed Description
The technical scheme of the invention is further specifically described below by way of examples and with reference to the accompanying drawings, and the features of the invention will be more apparent. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for convenience and clarity to assist in the description of the invention.
Example (b): a novel bridge girder erection machine structure is shown in figures 1-3 and comprises a longitudinal main beam 1, a connecting beam 2, a cantilever beam 3, a hoisting crown block 4, a walking trolley 5, a pulley 6, a balancing weight 7, a front supporting leg 8 and a rear supporting leg 9. Vertical girder 1 and 2 mechanical connections of connecting beam, cantilever beam 3 is installed to vertical girder 1 top, the slide rail has been laid to cantilever beam 3 top, jack-up overhead traveling crane 6 can be in the free slip of cantilever beam 3 top, vertical girder 1 front end is provided with preceding landing leg 8, vertical girder 1 rear end is provided with back landing leg 9, installs balancing weight 4 on the cantilever beam 3, walking dolly 5 is installed to vertical girder 1 below.
The cantilever beam 3 extends out of the outer side of the longitudinal main beam 1, the length of the cantilever beam is determined according to design requirements, and the cantilever beam 3 can realize the operation of lifting the beam outside the bridge side. The balancing weight 7 is mechanically connected and installed on one side of the cantilever beam 3 and used for balancing the overall stability of the bridge girder erection machine, the weight and the installation position of the balancing weight 7 are determined according to design requirements, and the bridge girder erection machine needs to perform anti-overturning checking calculation during girder lifting operation. The walking trolley 5 is arranged below the middle part of the longitudinal main beam, and can realize the walking of the bridge girder erection machine on an operation bridge floor. The novel bridge girder erection machine is suitable for the operation of 15-30 m small-span precast box girders, T girders and hollow plate girder lifting.
As shown in fig. 4-5, the longitudinal main beam 1 is composed of box beams with different lengths, and each section is connected by high-strength bolts.
As shown in fig. 6, the cantilever beams 3 adopt triangular trusses, the triangular trusses are formed by welding profile steels, the triangular trusses can walk on a longitudinal main beam front and back, a hoisting crown block 6 is arranged above each cantilever beam 3, the hoisting crown block 6 can move left and right on the cantilever beams 3, and a winch, a roller and a steel wire rope are arranged on the hoisting crown block 6 and used for hoisting operation.
In addition, preceding landing leg 8 and back landing leg 9 all design for telescopic, ensure that the bridge girder erection machine can stretch out and draw back from top to bottom with the in-process of via hole in the front and back removal, preceding landing leg 8 still designs simultaneously has traveling system for the bridge girder erection machine via hole.
In order to solve the problems, the invention also provides a novel bridge girder lifting method and a novel hole passing method of the bridge girder erection machine, wherein the method comprises the following steps of adopting the bridge girder erection machine equipment, and as shown in fig. 7-8.
The girder lifting method of the bridge girder erection machine is described as follows:
s1: the two hoisting crown blocks 6 are respectively stopped at the set positions of the cantilever beam 3, the hook is hooked at the end part of the beam plate to be disassembled, the two beam plates are lifted to the set height, and the set positions and the set height are determined according to the operation requirements;
s2: the hoisting crown block 6 is transversely moved along the cantilever beam 3 for a set distance, so that the beam plate to be disassembled is moved out of the bridge span position, and the set distance is determined according to the operation requirement;
s3: the hoisting crown block 6 is placed down to the beam plate to be dismantled.
The bridge girder erection machine via hole method is described as follows:
s1: 2 groups of cantilever beams 3 of the bridge girder erection machine all walk and stop at the front end of the longitudinal main girder 1.
S2: the rear leg 9 is retracted by one segment;
s3: the bridge girder erection machine walks forwards on the undetached beam plates to the position of the next section of the removed beam plates through the walking system below the front supporting legs 8.
S4: the rear legs 8 extend out and are supported on the bent cap.
S5: and moving the main beam backwards to the position above the beam plate to be dismantled, and preparing for dismantling the next hole beam plate.
In summary, in the novel bridge girder erection machine structure provided by the embodiment, the cantilever type cross beam is arranged, so that the bridge side girder lifting operation is realized, and the application range of the bridge girder erection machine is expanded; the counterweight block which is mechanically connected is arranged, and the counterweight can be carried out according to the design requirement, so that the integral stability of the bridge girder erection machine can be ensured; the structural form is simple, the stress mechanism is clear, and the processing and the installation are convenient; and the cost can be reduced, and the construction efficiency is improved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A bridging machine, its characterized in that: the device comprises a longitudinal main beam, a connecting beam, a cantilever beam, a hoisting crown block, a walking trolley, a front supporting leg, a rear supporting leg and a balancing weight; the longitudinal main beams are mechanically connected together through a connecting beam; a cantilever beam is arranged above the longitudinal main beam; a slide rail is laid above the cantilever beam, and the hoisting crown block can freely slide above the cantilever beam along the slide rail; the front end of the longitudinal girder is provided with a front supporting leg, the rear end of the longitudinal girder is provided with a rear supporting leg, the cantilever beam is provided with a balancing weight, and the walking trolley is arranged below the longitudinal girder.
2. A bridge erecting machine as defined in claim 1, wherein: the cantilever beam extends out of the outer side of the longitudinal main beam, the extending length of the cantilever beam is determined according to design requirements, and the cantilever beam can realize the operation of lifting the beam outside the bridge side.
3. A bridge erecting machine as defined in claim 1, wherein: the balancing weight is installed on one side of the cantilever beam through mechanical connection and used for balancing the overall stability of the bridge girder erection machine, the weight and the installation position of the balancing weight are determined according to design requirements, and the bridge girder erection machine needs to perform anti-overturning checking calculation during girder lifting operation.
4. A bridge erecting machine as defined in claim 1, wherein: the walking trolley is arranged below the middle part of the longitudinal main beam, so that the bridge girder erection machine can walk on the operation bridge floor.
5. A bridge erecting machine as defined in claim 1, wherein: the bridge girder erection machine is suitable for lifting of 15-30 m small-span prefabricated box girders, T-shaped girders and hollow plate girders.
6. A bridge erecting machine as defined in claim 1, wherein: the longitudinal main beam is composed of box beams with different lengths, and the box beams are connected by high-strength bolts.
7. A bridge erecting machine as defined in claim 1, wherein: the cantilever beam adopts a triangular truss structure, the triangular truss structure is formed by welding profile steels, and the triangular truss structure can walk back and forth on the longitudinal main beam; a hoisting crown block is arranged above each cantilever beam, the hoisting crown block can move left and right on the cantilever beam, and a winch, a roller and a steel wire rope are arranged on the hoisting crown block.
8. A bridge erecting machine as defined in claim 1, wherein: the front supporting leg and the rear supporting leg are of telescopic structures, the bridge girder erection machine can stretch up and down in the process of moving in the front and at the back and passing through holes, and meanwhile, a walking system is further designed on the front supporting leg.
9. A bridge erecting machine as defined in claim 1, wherein: the girder lifting method of the bridge girder erection machine is implemented as follows,
s1: the two hoisting crown blocks respectively stop at the set positions of the cantilever beam, are hooked at the end parts of the beam plates to be disassembled, lift the two beam plates to the set height, and the set positions and the set height are determined according to the operation requirements;
s2: the hoisting crown block is transversely moved along the cantilever beam for a set distance, so that the beam plate to be disassembled is moved out of the bridge span position, and the set distance is determined according to the operation requirement;
s3: and the hoisting crown block is lowered to the beam plate to be disassembled.
10. A bridge erecting machine as defined in claim 1, wherein: the via hole method of the bridge girder erection machine comprises the following steps:
s1: 2 groups of cantilever beams of the bridge girder erection machine walk and stop at the front end of the longitudinal main girder;
s2: the rear leg retracts by one section;
s3: the bridge girder erection machine forwards walks on the undetached beam slab to the position of the next section of the removed beam slab through the walking system below the front supporting legs;
s4: the rear supporting legs extend out and are supported on the cover beam;
s5: and moving the main beam backwards to the position above the beam plate to be dismantled, and preparing for dismantling the next hole beam plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656983.XA CN111851301A (en) | 2020-07-09 | 2020-07-09 | Bridge erecting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656983.XA CN111851301A (en) | 2020-07-09 | 2020-07-09 | Bridge erecting machine |
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| Publication Number | Publication Date |
|---|---|
| CN111851301A true CN111851301A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010656983.XA Pending CN111851301A (en) | 2020-07-09 | 2020-07-09 | Bridge erecting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635362A (en) * | 2022-03-23 | 2022-06-17 | 保利长大工程有限公司 | Cantilever type beam lifting station for beam slab erection and method for hoisting beam lifting station to bridge |
-
2020
- 2020-07-09 CN CN202010656983.XA patent/CN111851301A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635362A (en) * | 2022-03-23 | 2022-06-17 | 保利长大工程有限公司 | Cantilever type beam lifting station for beam slab erection and method for hoisting beam lifting station to bridge |
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