CN107201723B - Quick-opening-closing type integrated bridge girder erection machine and girder erection method thereof - Google Patents
Quick-opening-closing type integrated bridge girder erection machine and girder erection method thereof Download PDFInfo
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- CN107201723B CN107201723B CN201610157330.0A CN201610157330A CN107201723B CN 107201723 B CN107201723 B CN 107201723B CN 201610157330 A CN201610157330 A CN 201610157330A CN 107201723 B CN107201723 B CN 107201723B
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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
Abstract
The invention discloses an integrated bridge girder erection machine and a bridge erection method thereof, wherein the integrated bridge girder erection machine comprises a girder transportation machine, a bridge system and a quick connector, wherein the girder transportation machine is connected with the bridge system through the quick connector, the quick connector is of a pair of hinged structures, and the pair of the quick connector is respectively arranged at the rear end of a girder of the bridge system and the front end of a horn of the girder transportation machine, and the hinged structures of the quick connector are connected together through a pin shaft so as to enable the girder transportation machine and the bridge system to be in a whole state when being butted into a girder. The integrated bridge girder erection machine is easy to transport Liang Jianshan, low in equipment manufacturing cost and high in construction efficiency.
Description
Technical Field
The invention relates to the technical field of railway traffic bridge girder erection machines, in particular to a rapid split-combined type integrated bridge girder erection machine and a girder erection method thereof.
Background
In the existing technology of erecting prefabricated simply supported concrete box girders, especially in the existing erection equipment of prefabricated large-scale box girders of high-speed railways and large-scale bridges in the gulf, the method mainly comprises the following steps: the girder lifting machine for taking and loading girders in a girder preparation field, the tire type girder transporting vehicle for carrying out girder transporting tasks between the girder preparation field and a bridge girder erecting work point, and the bridge girder erecting machine for carrying out girder erecting work are commonly referred to as 'transporting and lifting'.
The original three large pieces implement a large-scale long-distance pipeline operation mode, and three large pieces of equipment operate independently and are matched orderly, so that the three large pieces of equipment cannot be matched. Later, for saving the manufacturing cost of equipment and for adapting to the needs of building high-speed rails in mountain areas, a ' frame-transporting integrated bridge girder erection machine ', which is called frame-transporting integrated machine for short ', is developed. The beam lifting and lifting machine is characterized in that three original 'carrying and lifting' parts are combined into a multifunctional integral device, and beam lifting, beam conveying and lifting operations can be completed in sequence, but a two-span lower guide beam is required to be configured for a beam carrying and lifting machine to slide and advance on. This model is known as a carrier all-in-one with a lower guide beam. Then, in order to further save the manufacturing cost and simplify the girder erecting process, the machine is modified, the separated lower guide girder of the original machine is removed, and the main girder of the girder transporting and erecting machine (main machine) is forwards prolonged to be a cantilever upper guide girder, which is similar to a 900t bridge erecting machine with two-span cantilever through holes in the prior art. This type of machine is called a frame-transporting integrated machine without a lower guide beam, or a "flow bridge girder erection machine". The latter saves manufacturing cost compared with the former, because the two-span lower guide beams are changed into the cantilever beams with only one span; the work efficiency is also improved, because the working procedure and time for laying the lower guide beam are saved. But the transportation cost of the concrete box girder is increased, because the main machine (girder transporting machine) carries the cantilever girder and 2 supporting legs, the length of the whole girder is approximately 95m, the whole girder transporting machine is clumsy and has large dead weight, the fuel consumption is large during girder transporting, the girder transporting machine walks very slowly, and the requirement on road environment is relatively wide, so the cost for building the road is increased.
In order to overcome the serious defects of the prior art, it is necessary to invent a quick integrated machine, which can improve the work efficiency and transport Liang Jianshan, thereby saving the cost.
Disclosure of Invention
The invention provides a rapid separation and combination type integrated bridge girder erection machine and a girder erection method thereof, which are used for solving the defects of difficult girder transportation, higher equipment manufacturing cost, lower construction efficiency and the like of the existing girder erection machine with integrated transportation and erection.
In one aspect of the invention, a rapid split-type integrated bridge girder erection machine is provided, the integrated bridge girder erection machine comprises a girder transporting machine, a nose bridge system and a rapid joint, wherein the girder transporting machine is connected with the nose bridge system through the rapid joint,
the quick connectors are hinged structures in pairs, and are respectively arranged at the rear end of the main beam of the nose bridge system and the front end of the arm of the girder transporting and erecting machine in pairs, and the hinged structures of the quick connectors are connected together through pin shafts so as to enable the girder transporting and erecting machine and the nose bridge system to be in butt joint to be in an integral state when being erected; the quick connector can quickly separate the girder transporting machine and the nose bridge system into independent states, and the transporting frame Liang Jineng can independently return to a girder transporting field.
Preferably, a quick connector is arranged on the section of the front end of a single-beam type horn of the beam transporting and erecting machine, a door type middle supporting leg which is orthogonal to and fixedly connected with the single-beam type horn is additionally arranged on the rear side of the tire type trolley in front of the beam transporting and erecting machine, and a guide clamp is arranged at the front end of the single-beam type horn.
Preferably, the door-type middle supporting leg comprises a door-type bracket and a jack, wherein the door-type bracket is orthogonal to the single-beam type horn and fixedly connected with the single-beam type horn, and the jack is arranged at the left column foot and the right column foot of the door-type bracket, so that the door-type middle supporting leg can stretch up and down.
Preferably, the nose bridge system comprises a single box nose bridge, a fixed door type auxiliary supporting leg and a movable main supporting leg, wherein the movable main supporting leg and the fixed door type auxiliary supporting leg are respectively positioned front and back below the single box nose bridge to serve as a support.
Preferably, the fixed door-type auxiliary supporting leg comprises a door-type bracket and a jack of a column foot, wherein the door-type bracket is orthogonal to and fixedly connected with the single box-shaped nose bridge.
Preferably, the quick connector comprises a pin shaft, probe type ear plates welded and fixed on upper and lower cover plates of a box-shaped nose bridge section of the nose bridge system and probe type ear plates welded and fixed on upper and lower cover plates in the box-shaped beam section of the single-beam type horn, the probe type ear plates welded and fixed on the upper and lower cover plates of the box-shaped nose bridge section of the nose bridge system are matched with the probe type ear plates welded and fixed on upper and lower cover plates in the box-shaped beam section of the single-beam type horn of the carrier-beam machine, and the carrier-beam machine and the nose bridge system can be quickly closed and separated by inserting or extracting the pin shaft.
Preferably, probe type ear plates welded and fixed on upper and lower cover plates of the box-shaped nose bridge section of the nose bridge system and probe type ear plates welded on upper and lower cover plates in the box beam section of the single-beam type horn are arranged in a staggered manner, probe parts can be mutually inserted or pulled out to form an ear plate string type hinge joint, and the pin shaft is inserted into the ear plate string horizontal pin hole.
Preferably, a pair of guide clamps are arranged at the waist parts of the outer sides of two webs of the section where the quick connector is located, one end of each guide clamp is welded on the outer sides of the webs of the single-beam type horn, and the other end of each guide clamp is cantilevered to be in a horn shape and used for guiding when the quick connector performs butt joint operation.
Furthermore, the single-beam girder transporting machine in the girder transporting integrated bridge girder erection machine with the lower guide girder in the prior art is innovatively modified, the front end of the girder is additionally provided with a quick connector for being in butt joint with the girder bridge system of the girder transporting machine, meanwhile, a door-type supporting leg is arranged on the girder at the rear side of the front tire type trolley, a large-tonnage electric screw jack is arranged on the column foot of the girder transporting machine, the girder transporting machine can be jacked, and the girder transporting machine has different working principle from a hydraulic jack and is high in safety. The nose bridge system of the invention consists of a main beam, a front fixed auxiliary leg and a movable main leg; the girder is a single box girder section, the cross section size of the rear end of the girder is the same as that of the front end of the girder transporting and erecting machine, and a quick connector paired with the front end of the girder transporting and erecting machine is additionally arranged, so that the girder transporting and erecting machine and a bridge system can be quickly connected or separated. The fixed auxiliary support leg of the bridge system is a light and weak telescopic support leg which is only used for supporting a main beam of the bridge system on a bridge deck, never stands on the bridge pier top, and can be retracted to leave the bridge deck for a certain distance at ordinary times. The movable main support leg of the bridge system is required to bear the load of the bridge girder erection machine, so that the hydraulic driving carrier roller mechanism for supporting the main load is configured, and the bridge girder erection machine also has the functions of hydraulic turnover, expansion and back and forth movement, which are equivalent to the structure, the form and the function of the movable front support leg of the 900-ton bridge girder erection machine with the two-span cantilever through holes in general, and are familiar technology of the technical personnel in the field. The separated girder transporting machine and the bridge system are respectively of a geometrically statically determined structure or a statically indeterminate structure, and can stand on the bridge deck relatively independently.
The invention also provides a girder erecting method of the integrated girder erecting machine, which comprises a girder transporting machine, a nose bridge system and a quick connector, wherein the girder transporting machine is connected with the nose bridge system through the quick connector, the quick connector is a pair of hinged structures, the pair of hinged structures are respectively arranged at the rear end of a girder of the nose bridge system and the front end of a cantilever of the girder transporting machine, and the hinged structures of the quick connector are connected together through a pin shaft so as to enable the girder transporting machine and the nose bridge system to be in an integral state when being butted into a girder;
the beam transporting and erecting machine comprises a rear trolley, a front trolley, a single beam type horn, a lifting concrete beam system and a door type middle supporting leg, wherein the rear trolley and the front trolley are positioned at two ends of the single beam type horn, the door type middle supporting leg is arranged at the rear side of the front trolley, and the lifting concrete beam system is arranged on the single beam type horn and between the door type middle supporting leg and the rear trolley;
the nose bridge system comprises a single box nose bridge, a fixed door type auxiliary supporting leg and a movable main supporting leg, wherein the movable main supporting leg and the fixed door type auxiliary supporting leg are respectively positioned below the single box nose bridge front and back;
the girder erecting method comprises the following steps:
step 1: after the bridge girder erection machine is assembled on a girder preparation field, the first hole girder to be erected is lifted to a bridge head to prepare for girder erection: the movable main support leg is well erected on the abutment pier cap; simultaneously starting a movable main leg overhead carrier roller system and a rear trolley driving system of the girder transporting machine, and pushing the bridge girder erecting machine to longitudinally move through holes;
step 2: the rear wheel of the front trolley is separated from the bridge abutment, the front end of the single box nose bridge is over the front pier, the longitudinal movement is suspended, the fixed type middle supporting leg is supported on the breast wall top of the bridge abutment, the electric screw jack lifts the top, the movable type main supporting leg is separated from the pier top surface, and the movable type main supporting leg is folded and supported on the cushion stone at the front side of the front pier;
step 3: the middle supporting leg screw jack is retracted, the bridge girder erection machine continues to longitudinally move through the hole until the concrete box girder is conveyed to reach the upper part of the first hole bridge span, and the girder is aligned and dropped;
step 4: after the beam falling is completed in place, the beam transporting and erecting machine backs up to the bridge deck of the erected beam under the support of the movable main leg carrier roller and the rear trolley;
step 5: the movable main support leg is supported on the pier top and is fixed in situ, and is anchored with a hanging beam hole of the beam head of the erected beam by a standard inclined support to protect safety; supporting the electric screw jack of the fixed door type auxiliary supporting leg on the bridge deck; then pulling out a pin shaft of the quick connector to separate the girder transporting machine from the bridge system, returning the girder transporting machine to a girder field to transport girders, and keeping the bridge system in place on the bridge;
step 6: the beam transporting machine returns to the beam erecting working point and performs butt joint closing operation with the nose bridge system on the left bridge: the bridge girder transporting machine is slowly close to the nose bridge system, the bridge girder transporting machine and the nose bridge system are pulled by using a winch traction rope to be closely aligned along the guide clamp, the pin shafts are inserted into the pin holes of the quick connectors above and below, then the pin shafts are inserted into cotter pins to latch the pin shafts, and the bridge girder transporting machine is restored to be a whole, so that girder erecting can be started.
The integrated bridge girder erection machine is easy to transport Liang Jianshan, low in equipment manufacturing cost and high in construction efficiency.
Drawings
In order to more clearly illustrate the present invention, an embodiment will be described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are of some embodiments of the invention and that other drawings may be derived from them without inventive faculty.
FIG. 1 is a schematic view of a construction of an integrated bridge girder erection machine according to an embodiment of the present invention when closed;
FIG. 2 is a schematic diagram of a structure of an integrated bridge girder erection machine according to an embodiment of the present invention when the bridge girder erection machine is separated;
FIG. 3 is a half C-C, half D-D cross-sectional view of FIG. 1;
FIG. 4 is a cross-sectional view B-B of FIG. 1;
FIG. 5 is a cross-sectional view A-A of FIG. 1;
fig. 6 is an enlarged view of M of fig. 1;
FIG. 7 is an E-E view of FIG. 6;
FIG. 8 is a view in the F direction of FIG. 6, showing the structure of a guide clip;
FIG. 9 is a schematic view of a quick connector of an integrated bridge girder erection machine according to an embodiment of the present invention;
FIG. 10 is a G-G view of FIG. 9;
FIG. 11 is a schematic view showing a transparent structure of a quick connector of an integrated bridge girder erection machine according to an embodiment of the present invention;
fig. 12-1 to 12-6 are state diagrams of the rapid integrated bridge girder erection machine according to the present invention in the girder erection process.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the structure diagram of the integrated bridge girder erection machine in an embodiment of the present invention when closed is shown, the integrated bridge girder erection machine is a rapid split-type integrated bridge girder erection machine, the integrated bridge girder erection machine includes a girder transportation machine 1, a nose bridge system 2 and a rapid joint 3, wherein the girder transportation machine 1 is connected with the nose bridge system 2 through the rapid joint 3, and a concrete girder 4 is lifted under the girder transportation machine 1.
The quick connector 3 is a pair of hinged structures, and is respectively arranged at the rear end of a main beam 2-1 (such as a single main beam) of the nose bridge system 2 and the front end of a horn 1-3 (such as a single beam type horn) of the girder transporting and erecting machine 1 in pairs, and the pin shaft 3-1 is inserted to enable the girder transporting and erecting machine 1 and the nose bridge system 2 to be in butt joint to form an integral state when being in girder erecting, such as a closed structure shown in fig. 1; after a hole beam is erected, the upper part and the lower part of the quick connector 3 are respectively pulled out of the pin shafts 3-1, so that the two are in independent separation states as shown in fig. 2, and the structure schematic diagram is provided when the integrated bridge girder erection machine is separated according to an embodiment of the invention. At this point, the girder transporting machine 1 can transport girders by returning to the girder field alone with a relatively short, small and light fuselage, and the nose bridge system 2 remains on the bridge to wait. And the beam transporting and erecting machine 1 is fast docked with the nose bridge system 2 in situ through the fast joint 3 after transporting the beam, the original closed state is restored to be a whole, the beam just transported is erected continuously, and the whole machine can also carry the concrete box beam to freely pass through a tunnel to the inside of the tunnel or the tunnel portal girder erecting.
The beam transporting and erecting machine 1 comprises a rear trolley 1-1, a front trolley 1-2, a single beam type machine arm 1-3, a lifting concrete beam system 1-4 and a door type middle supporting leg 1-5, wherein the rear trolley 1-1 and the front trolley 1-2 are tire type trolleys. The rear trolley 1-1 and the front trolley 1-2 are positioned at two ends of the single-beam type horn 1-3, the door type middle supporting leg 1-5 is arranged at the rear side of the front trolley 1-2, and the lifting concrete beam system 1-4 is arranged on the single-beam type horn 1-3 and positioned between the door type middle supporting leg 1-5 and the rear trolley 1-1.
The structure of the door type middle supporting leg 1-5 of the girder transporting and erecting machine 1 is shown in fig. 3, which is a half C-C and half D-D section view of fig. 1, and the door type middle supporting leg 1-5 comprises a door type supporting leg 1-5-1 and a jack 1-5-2 which are orthogonal to and fixedly connected with the single girder type cantilever 1-3, the jack 1-5-2 is a customized large-tonnage electric screw type jack, the jack 1-5-2 is arranged at the left column leg and the right column leg of the door type supporting leg 1-5-1, so that the door type middle supporting leg 1-5 can stretch up and down, and the main function of the door type middle supporting leg 1-5 is to assist the bridge girder erecting machine to pass through holes.
The nose bridge system 2 comprises a single box nose bridge 2-1, a fixed door type auxiliary supporting leg 2-2 and a movable main supporting leg 2-3, wherein the movable main supporting leg 2-3 and the fixed door type auxiliary supporting leg 2-2 are respectively positioned front and back below the single box nose bridge 2-1 to be used as a support.
The structure of the fixed door-type auxiliary supporting leg 2-2 of the nose bridge system 2 is shown in fig. 4, which is a B-B section view of fig. 1, and in combination with fig. 1, 2 and 4, the fixed door-type auxiliary supporting leg 2-2 comprises a door-type bracket 2-2a which is orthogonal to and fixedly connected with the single box-shaped nose bridge 2-1, and a jack 2-2B of a column base, and the jack 2-2B is a small electric screw jack which can extend up and down and allow the movable main supporting leg 2-3 to drill down. The portal auxiliary leg 2-2 serves as a support for the bridge system 2 alone, and may therefore be a lightweight leg.
The structure of the movable main leg 2-3 of the nose bridge system 2 is shown in fig. 5, which is a sectional view A-A of fig. 1, and the movable main leg 2-3 is a main stress leg for the whole girder erection process, and can be drilled from the crotch of the door-type auxiliary leg 2-2 and the front tire-type trolley 1-2. In combination with the configuration shown in fig. 1, 2, 4 and 5, the top of the movable main leg 2-3 is provided with a hydraulic driving roller mechanism for supporting the main load, and the functions of folding, telescoping, moving back and forth and boarding the top surface of the bridge abutment breast wall are equivalent to the structure, form, configuration and the like of the movable front leg of the universal two-span cantilever via 900 ton bridge girder erection machine, which are already familiar to those skilled in the art, and are not repeated.
As shown in fig. 6, an enlarged M view of fig. 1 is a schematic diagram of a quick connector structure of an integral bridge girder erection machine according to an embodiment of the present invention, one half of the quick connector 3 is respectively disposed at an upper cover plate and a lower cover plate in a front end girder section (e.g., a box girder section) of the single girder erection machine 1-3, and the other half of the quick connector 3 is respectively disposed at an upper cover plate and a lower cover plate in a rear end girder section (e.g., a box girder section) of the single girder erection machine 1-1 and is paired with one half of the quick connector 3 of the single girder erection machine 1-3 of the girder erection machine 1. A pair of guide clips 5 are arranged at the outer side waist parts of two webs of the section where the quick connector 3 is arranged, and the guide clips 5 are used for guiding when the quick connector 3 performs the abutting operation.
The structure of the guide clip 5 is shown in fig. 7 and 8, wherein fig. 7 is an E-E view of fig. 6, and fig. 8 is an F-direction view of fig. 6, that is, a guide clip structure schematic diagram, and the electric hoist 5-1 installed in the single-beam horn 1-3 can tighten both the single-box nose bridge 2-1 and the single-beam horn 1-3 through a wire rope and the traction lug 5-2, so as to accurately align along the guide clip 5. The pair of guide clips 5 are a pair of box-shaped members with high rigidity, one end of each box-shaped member is welded to the outer sides of webs of the single-beam type horn 1-3, and the other end of each box-shaped member is cantilevered to extend into a horn shape.
The structure of the quick connector 3 may be shown in fig. 9 and 11, fig. 9 is a schematic view of the structure of the quick connector of an integral bridge girder erection machine according to an embodiment of the present invention, fig. 11 is a schematic view of the transparent structure of the quick connector of the integral bridge girder erection machine according to an embodiment of the present invention, fig. 9 is a schematic view of G-G, and fig. 10 are combined with fig. 9 and 10, the quick connector 3 includes a long pin 3-1, a probe-type ear plate 3-2 welded and fixed on the upper and lower cover plates of the single-box bridge girder 2-1, and a probe-type ear plate 3-4 welded on the upper and lower cover plates in the cross section of the box girder of the single-girder type horn 1-3. The probe type ear plates 3-2 welded and fixed on the upper cover plate and the lower cover plate of the single-box nose bridge 2-1 are matched with the probe type ear plates 3-4 welded on the upper cover plate and the lower cover plate of the single-beam type horn 1-3, and the bridge transporting and erecting machine 1 and the nose bridge system 2 can be quickly closed and separated through inserting or pulling out the pin shafts 3-1. The ear plates 3-2 and the ear plates 3-4 are staggered, and the probe parts can be mutually inserted or pulled out to form an ear plate serial type hinge joint, and the long pin shaft 3-1 is inserted into a horizontal pin hole of the quick connector 3. The upper joint and the lower joint are respectively inserted with the pin shaft 3-1. The pin shaft 3-1 is divided into a plurality of closely distributed sheared surfaces by the comb-shaped lug plates, so that huge horizontal force generated by vertical bending moment along the longitudinal direction of the upper cover plate and the lower cover plate and vertical shearing force generated by hanging weight can be resisted. Because only 2 pins 3-1 are required to be pulled out or inserted in total during the butt joint or separation, the task can be completed extremely quickly, and the construction speed is high.
In another aspect of the invention, a girder erecting method of the integrated girder erection machine is further provided, as follows.
Step S01: as shown in fig. 12-1, after the bridge girder erection machine is assembled on a girder preparation field, the first hole girder to be erected is lifted to a bridge head to prepare for girder erection: the movable main support leg 2-3 is well erected on the abutment coping. Simultaneously starting a movable main supporting leg 2-3 overhead carrier roller system and a rear tire type trolley 1-1 driving system of the girder transporting machine 1, and pushing the bridge girder erecting machine to longitudinally move through the hole.
Step S02: as shown in fig. 12-2, the rear wheel of the front trolley 1-2 has left the bridge abutment, the front end of the single box nose bridge 2-1 has passed the front pier to be over, the longitudinal movement is suspended, the fixed middle supporting leg 1-5 is supported on the breast wall top of the bridge abutment, the electric screw jack 1-5-2 is lifted, the movable main supporting leg 2-3 is made to leave the pier top surface, and the movable main supporting leg is folded and self-supported on the front side backing stone of the front pier.
Step S03: as shown in fig. 12-3, the middle supporting leg screw jack 1-5-2 is retracted, the bridge girder erection machine continues to longitudinally move through the hole until the transported concrete box girder reaches the position above the bridge span of the first hole, and the girder can be aligned and dropped.
Step S04: as shown in fig. 12-4, after the beam falling is completed, the beam transporting and erecting machine 1 is backed up and retreated onto the erected beam bridge deck under the support of the movable main supporting leg 2-3 carrier roller and the rear tire type trolley 1-1.
Step S05: as shown in fig. 12-5, the movable main support leg 2-3 is supported on the pier top and is fixed in place, and is anchored with the hanging beam hole of the beam head of the erected beam by using a standard diagonal brace to protect safety; the electric screw jack 2-2b of the fixed door type auxiliary leg 2-2 is supported on the bridge deck. And then pulling out the pin shaft 3-1 of the quick connector 3 to separate the girder transporting machine 1 from the bridge system 2, returning the girder transporting machine 1 to the girder field to transport the girders, and leaving the bridge system 2 in place on the bridge.
Step S06: as shown in fig. 12-6, the girder transporting and erecting machine 1 transports girders to return to a girder erecting working point, and performs docking closing operation with the bridge system 2 on the left-behind bridge: the bridge girder transporting machine 1 is slowly close to the nose bridge system 2, the two are pulled by using a winch 5-1 traction rope to be closely aligned along the guide clamp 5, a long pin shaft 3-1 is inserted into the pin holes of the quick connectors 3 above and below, then a cotter pin is inserted to latch the pin shaft 3-1, the bridge girder transporting machine is restored to be a whole, girder erecting can be started, and a new girder erecting cycle can be restarted according to the step S01.
In summary, the integrated bridge girder erection machine described in the aspects of the invention overcomes the defects of higher manufacturing cost and lower girder erection efficiency of the bridge girder erection machine with the lower guide girder in the prior art, and overcomes the defects of higher fuel consumption and higher girder transportation channel construction cost of the concrete box girder transportation machine without the lower guide girder in the prior art, and can smoothly achieve the purposes of approaching the tunnel inlet and outlet and erecting the box-shaped concrete girder in the tunnel, thereby improving economic benefit and construction efficiency. In addition, the integrated bridge girder erection machine provided by the embodiment of the invention provides a construction scheme which can be flexibly selected and converted for users: split or closed type. When the transportation Liang Juli is far and the road environment condition is poor, a split-combined working mechanism is selected for the bridge girder erection machine; when the beam transporting distance is short and the road environment is wide, a closed working mechanism can be selected, namely, the beam transporting machine and the nose bridge system adopt an integral scheme which is only indiscriminate.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The quick split-type integrated bridge girder erection machine is characterized by comprising a girder transporting and erecting machine (1), a nose bridge system (2) and a quick connector (3), wherein the girder transporting and erecting machine (1) is connected with the nose bridge system (2) through the quick connector (3), wherein,
the quick connectors (3) are hinged structures in pairs, and are respectively arranged at the rear end of a main beam of the nose bridge system (2) and the front end of a horn of the girder transporting and erecting machine (1) in pairs, and the hinged structures of the quick connectors (3) are connected together through pin shafts so as to enable the girder transporting and erecting machine (1) and the nose bridge system (2) to be in an integral state when being butted into a girder transporting and erecting; the quick connector (3) can quickly separate the girder transporting and erecting machine (1) and the nose bridge system (2) into independent states, and the girder transporting and erecting machine (1) can independently return to a girder transporting field for girder transportation.
2. The integrated bridge girder erection machine according to claim 1, wherein a quick connector (3) is installed on the front end section of a single-girder type horn (1-3) of the girder transportation machine (1), a door type middle supporting leg (1-5) which is orthogonal to and fixedly connected with the single-girder type horn (1-3) is additionally arranged on the rear side of a tire type trolley (1-2) in front of the girder transportation machine, and a guide clip (5) is installed on the front end of the single-girder type horn (1-3).
3. The integrated bridge girder erection machine according to claim 2, wherein the portal middle supporting leg (1-5) comprises a portal bracket (1-5-1) and a jack (1-5-2), wherein the portal bracket is orthogonal to and fixedly connected with the single-girder type horn (1-3), and the jack (1-5-2) is installed at the left column foot and the right column foot of the portal bracket (1-5-1) so that the portal middle supporting leg (1-5) can extend and retract up and down.
4. The integrated bridge girder erection machine according to claim 1, wherein the nose bridge system (2) comprises a single box nose bridge (2-1), a fixed door type auxiliary leg (2-2) and a movable main leg (2-3), wherein the movable main leg (2-3) and the fixed door type auxiliary leg (2-2) are respectively positioned front and back below the single box nose bridge (2-1) as a support.
5. The integrated bridge girder erection machine according to claim 4, wherein the fixed type door-type auxiliary leg (2-2) comprises a door-type bracket (2-2 a) and a jack (2-2 b) of a column foot, which are orthogonal and fixedly connected with the single box-type nose bridge (2-1).
6. The integrated bridge girder erection machine according to claim 1, wherein the quick connector (3) comprises a pin shaft (3-1), probe type ear plates (3-2) welded and fixed on upper and lower cover plates of a box-shaped nose bridge (2-1) section of the nose bridge system (2), and probe type ear plates (3-4) welded and fixed on upper and lower cover plates of a box-shaped beam section of a single-beam type horn (1-3) of the girder transporting girder erection machine (1), the probe type ear plates (3-2) welded and fixed on upper and lower cover plates of the box-shaped nose bridge section of the nose bridge system (2) are matched with the probe type ear plates (3-4) welded and fixed on upper and lower cover plates of the box-shaped beam section of the single-beam type horn (1-3), and the bridge transporting girder erection machine (1) and the system (2) can be rapidly closed and separated by inserting or extracting the pin shaft (3-1).
7. The integrated bridge girder erection machine according to claim 6, wherein probe type earplates (3-2) welded and fixed on upper and lower cover plates of a box-shaped nose bridge (2-1) section of the nose bridge system (2) are staggered with probe type earplates (3-4) welded on upper and lower cover plates in a box girder section of the single girder type horn (1-3) and probe parts can be inserted into or pulled out from each other to form an earplate string type hinge joint, and the pin shaft (3-1) is inserted into an earplate string horizontal pin hole.
8. The integrated bridge girder erection machine according to claim 1, wherein a pair of guide clips (5) are arranged at the waist parts of the outer sides of two webs of the section where the quick connector (3) is located, one end of each guide clip (5) is welded to the outer side of the web of a single girder type arm (1-3) of the girder transporting machine (1), and the other end of each guide clip is cantilevered to be stretched out to be horn-shaped for guiding when the quick connector (3) is subjected to butt joint operation.
9. The girder erecting method of the integrated girder erecting machine is characterized in that the integrated girder erecting machine comprises a girder transporting and erecting machine (1), a nose bridge system (2) and a quick connector (3), wherein the girder transporting and erecting machine (1) passes throughThe quick connector (3) and the nose bridge system A system (2) connection, whereinThe quick connector (3) is formedThe hinge structures of the pair are respectively arranged at the rear end of the main beam of the nose bridge system (2) and the front end of the arm of the girder transporting and erecting machine (1) in pairs, and the hinge structures of the quick connectors (3) are connected together through pin shafts so as to enable the girder transporting and erecting machine (1) and the nose bridge system (2) to be in butt joint to form an integral state when erecting girders;
the beam transporting and erecting machine (1) comprises a rear trolley (1-1), a front trolley (1-2), a single beam type horn (1-3), a lifting concrete beam system (1-4) and a door type middle supporting leg (1-5), wherein the rear trolley (1-1) and the front trolley (1-2) are positioned at two ends of the single beam type horn (1-3), the door type middle supporting leg (1-5) is arranged at the rear side of the front trolley (1-2), and the lifting concrete beam system (1-4) is arranged on the single beam type horn (1-3) and between the door type middle supporting leg (1-5) and the rear trolley (1-1);
the nose bridge system (2) comprises a single box-shaped nose bridge (2-1), a fixed door type auxiliary supporting leg (2-2) and a movable main supporting leg (2-3), wherein the movable main supporting leg (2-3) and the fixed door type auxiliary supporting leg (2-2) are respectively positioned below the single box-shaped nose bridge (2-1) front and back;
the girder erecting method comprises the following steps:
step 1: after the bridge girder erection machine is assembled on a girder preparation field, the first hole girder to be erected is lifted to a bridge head to prepare for girder erection: the movable main support leg (2-3) is well erected on the abutment pier cap; simultaneously starting a movable main supporting leg (2-3) overhead carrier roller system and a rear trolley (1-1) driving system of a girder transporting and erecting machine (1), and pushing a bridge girder erecting machine to longitudinally move through holes;
step 2: the rear wheel of the front trolley (1-2) is separated from the bridge abutment, the front end of the single box nose bridge (2-1) is over the front pier, the longitudinal movement is suspended, the fixed type middle supporting leg (1-5) is supported on the breast wall top of the bridge abutment, the electric screw jack (1-5-2) is lifted, the movable main supporting leg (2-3) is separated from the pier top surface, and the movable main supporting leg is folded to be supported on the cushion stone at the front side of the front pier;
step 3: the middle supporting leg screw jack (1-5-2) is retracted, the bridge girder erection machine continues to longitudinally move through the hole until the transported concrete box girder reaches the upper part of the first hole bridge span, and the girder is aligned and dropped;
step 4: after the beam falling is completed in place, the beam transporting and erecting machine (1) is backed up and retreated to the beam erecting bridge deck under the support of the movable main support leg (2-3) carrier roller and the rear trolley (1-1);
step 5: the movable main support legs (2-3) are supported on the pier top and are in-situ immobilized, and are anchored with hanging beam holes of the beam head of the erected beam by using standard inclined supports so as to protect safety; an electric screw jack (2-2 b) of a fixed door type auxiliary supporting leg (2-2) is supported on the bridge deck; then pulling out a pin shaft (3-1) of the quick connector (3) to separate the girder transporting machine (1) from the bridge system (2), returning the girder transporting machine (1) to a girder field to transport girders, and keeping the bridge system (2) in place on a bridge;
step 6: the beam transporting and erecting machine (1) transports beams to return to a beam erecting working point and performs butt joint closing operation with a nose bridge system (2) on a left-behind bridge: the bridge girder transporting machine (1) is slowly close to the nose bridge system (2), the bridge girder transporting machine (1) and the nose bridge system (2) are pulled by using a winch (5-1) traction rope to be tightly aligned along the guide clamp (5), the pin shafts (3-1) are inserted into the pin holes of the quick connectors (3) above and below, then the pin shafts are inserted into cotter pins to latch the pin shafts, and the bridge girder transporting machine is restored to be a whole, so that girder erecting can be started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157330.0A CN107201723B (en) | 2016-03-18 | 2016-03-18 | Quick-opening-closing type integrated bridge girder erection machine and girder erection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610157330.0A CN107201723B (en) | 2016-03-18 | 2016-03-18 | Quick-opening-closing type integrated bridge girder erection machine and girder erection method thereof |
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| CN107201723B true CN107201723B (en) | 2023-05-16 |
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| CN107881921B (en) * | 2017-12-13 | 2023-08-08 | 中铁第五勘察设计院集团有限公司 | Hiding type beam transporting vehicle |
| CN111809531B (en) * | 2020-07-30 | 2022-03-25 | 中建三局集团有限公司 | Pushing type bridge girder erection machine and girder erection method thereof |
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| KR200256845Y1 (en) * | 2001-09-11 | 2001-12-24 | 휘선건설(주) | launching nose for Incremental Launching Method Bridge Construction |
| CN201883383U (en) * | 2010-10-08 | 2011-06-29 | 石家庄铁道大学国防交通研究所 | Movable bridge erecting machine |
| CN201943009U (en) * | 2011-02-22 | 2011-08-24 | 北京城建道桥建设集团有限公司 | Simple fast-dismounting type steel truss guide beam |
| CN202766983U (en) * | 2012-09-25 | 2013-03-06 | 中铁科工集团有限公司 | Sectional bridge-erecting machine for railway T-beams |
| CN102979040B (en) * | 2012-12-13 | 2014-09-17 | 中铁二局股份有限公司 | Assembly method of bridge-building machine at exit of tunnel connected with bridge |
| CN203795312U (en) * | 2014-01-23 | 2014-08-27 | 石家庄铁道大学国防交通研究所 | Flow type bridge erecting machine |
| CN205576745U (en) * | 2016-03-18 | 2016-09-14 | 秦皇岛天业通联重工科技有限公司 | Divide box -like one -piece type bridge crane fast |
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