CN216194059U - Prefabricated bridge is torn open and is built all-in-one - Google Patents
Prefabricated bridge is torn open and is built all-in-one Download PDFInfo
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- CN216194059U CN216194059U CN202122363698.1U CN202122363698U CN216194059U CN 216194059 U CN216194059 U CN 216194059U CN 202122363698 U CN202122363698 U CN 202122363698U CN 216194059 U CN216194059 U CN 216194059U
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Abstract
The utility model discloses a prefabricated bridge dismantling and building integrated machine, which comprises: the main truss is horizontally arranged along the length direction of the prefabricated bridge; the top surface of the main truss is provided with a crown block slideway, and the bottom surface of the main truss is provided with a supporting leg slideway; each crown block is connected with the crown block slide way in a sliding manner and used for lifting a main beam, a cover beam and a pier stud of the prefabricated bridge; the front support legs, the middle support legs and the rear support legs are driven by driving devices to slide along the support leg slide ways respectively; the front supporting leg comprises a vertical telescopic structure, and the length of the front supporting leg is adjusted through the vertical telescopic structure, so that the front supporting leg can be supported on a bridge deck, a pier top or a pile foundation bearing platform of the prefabricated bridge. The utility model can dismantle bridges and substructure with different span arrangement directions of a plurality of layers of main beams, and install the prefabricated new bridge piers, capping beams and main beams, thereby having high construction efficiency.
Description
Technical Field
The utility model relates to the technical field of prefabricated bridge dismantling and building equipment. More specifically, the utility model relates to a prefabricated bridge dismantling and building integrated machine.
Background
With the rapid development of the national capital construction project, a large number of commercial bridges are required to be dismantled and rebuilt in some high-speed construction projects, the commercial bridges are of a multilayer structure, the requirements of environmental protection, safety and security in the bridge dismantling process are considered, the dismantling of the old bridges can be carried out only after the sparse bridges/the wide bridges are firstly built around, and the construction space is severely limited during the bridge dismantling and the new construction. The top bridge span arrangement of the commercial bridge is parallel to the center line of the road, and the other bridge spans are perpendicular to the center line of the road. And the traditional bridge girder erection machine can only dismantle the main girders arranged along the longitudinal direction when dismantling the precast girders, so that the single-span dismantling time is very long and the dismantling efficiency is low for commercial bridges with multiple layers of inconsistent main girder arrangement directions.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
To achieve these objects and other advantages in accordance with the purpose of the utility model, there is provided a precast bridge erecting and constructing all-in-one machine comprising:
the main truss is horizontally arranged along the length direction of the prefabricated bridge; the top surface of the main truss is provided with a crown block slideway, and the bottom surface of the main truss is provided with a supporting leg slideway;
each crown block is connected with the crown block slide way in a sliding manner and used for lifting a main beam, a cover beam and a pier stud of the prefabricated bridge;
the front support legs, the middle support legs and the rear support legs are driven by driving devices to slide along the support leg slide ways respectively; the front supporting leg comprises a vertical telescopic structure, and the length of the front supporting leg is adjusted through the vertical telescopic structure, so that the front supporting leg can be supported on a bridge deck, a pier top or a pile foundation bearing platform of the prefabricated bridge.
Preferably, along the dismantling direction of the prefabricated bridge, the front support leg, the middle support leg and the rear support leg are sequentially arranged below the main truss from front to back; the middle supporting leg is supported on the bridge deck or pier top of the prefabricated bridge; the rear supporting legs are supported on the bridge deck of the prefabricated bridge.
Preferably, the vertical telescopic structure includes:
the supporting leg cross beam is arranged at the lower end of the front supporting leg; an electric hoist is fixedly arranged on the supporting leg beam;
one end of the first sleeve is fixedly connected with the supporting leg cross beam;
the second sleeve extends into the other end of the first sleeve and is detachably connected with the first sleeve;
the third sleeve extends into the second sleeve, and is connected with the second sleeve through a hydraulic oil cylinder;
the outer walls of the first sleeve, the second sleeve and the third sleeve are provided with lifting lugs connected with the electric hoist, and the electric hoist is used for adjusting the length of the first sleeve and the length of the second sleeve.
Preferably, the second sleeve and the first sleeve, and the third sleeve and the second sleeve are fixed by pins.
Preferably, the number of the front supporting legs is two, and the front supporting legs are sequentially arranged at the front end of the main truss along the dismantling direction of the prefabricated bridge.
Preferably, the driving device comprises a screw and a ball nut matched with the screw, the screw is fixedly arranged beside the supporting leg slideway, and the screw is driven to rotate by a motor; one side of the ball nut is fixedly connected with a sliding block, and the motor drives the lead screw to rotate so as to drive the sliding block to slide in the supporting leg slideway; the front supporting leg, the middle supporting leg and the rear supporting leg are respectively and fixedly connected with the ball nuts of the corresponding driving devices.
The utility model at least comprises the following beneficial effects:
according to the prefabricated bridge dismantling and building integrated machine provided by the utility model, bridges and substructure with different span arrangement directions of a plurality of layers of main beams can be dismantled through the matching of a plurality of crown blocks and a plurality of front supporting legs, a plurality of middle supporting legs and a plurality of rear supporting legs, and a same set of equipment can be adopted to install prefabricated new bridge piers, capping beams and main beams after an old bridge is dismantled. The dismantling and building are combined, the upper part structure and the lower part structure of the bridge are integrally constructed, the dismantling efficiency of an old bridge and the construction efficiency of a newly-built bridge can be improved, the dismantling and building processes of the bridge have no influence on surrounding traffic, and the safety of traffic operation can be guaranteed.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
Fig. 1 is an erection schematic diagram of the integrated demolition and construction machine for bridge demolition in one embodiment of the utility model;
FIG. 2 is a schematic view of the first cross-top main beam removed in the above embodiment of the present invention;
FIG. 3 is a schematic view of the first cross-deck girder and the second cross-deck girder removed according to the above embodiment of the present invention;
FIG. 4 is a schematic view of the integrated demolition and construction machine according to the above embodiment of the present invention moving backward across a bay;
FIG. 5 is a schematic view of the second cross-middle main beam and the third cross-top main beam removed in the above embodiment of the present invention;
FIG. 6 is a schematic view of the third and fourth cross-deck girders and pier number N1 removed according to the above embodiment of the utility model;
FIG. 7 is a schematic diagram of the bridge construction of the integrated demolition and construction machine according to the above embodiment of the utility model;
fig. 8 is a schematic view of the second span main beam and the pier body number D3 installed in the above embodiment of the present invention;
FIG. 9 is a schematic view of the integrated demolition and construction machine moving forward and across in the above embodiment of the present invention;
FIG. 10 is a schematic structural view of the vertical telescopic device according to the above embodiment of the present invention;
fig. 11 is a schematic structural diagram of the driving device according to the above embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 11, the present invention provides a prefabricated bridge dismantling and building integrated machine, including:
the main truss 1 is horizontally arranged along the length direction of the prefabricated bridge; the top surface of the main truss 1 is provided with a crown block slideway, and the bottom surface of the main truss is provided with a supporting leg slideway;
each crown block is connected with the crown block slide way in a sliding manner and used for lifting a main beam, a cover beam and a pier stud of the prefabricated bridge;
the front support legs, the middle support legs and the rear support legs are driven by driving devices to slide along the support leg slide ways respectively; the front supporting leg comprises a vertical telescopic structure, and the length of the front supporting leg is adjusted through the vertical telescopic structure, so that the front supporting leg can be supported on a bridge deck, a pier top or a pile foundation bearing platform of the prefabricated bridge.
In this kind of technical scheme, the electric system, hydraulic system and other auxiliary component in the precast bridge integrated machine of demolishing of this application are the same with the electric system, hydraulic system and other auxiliary component of bridge girder erection machine among the prior art etc. and main truss moves longitudinally under the effect of self drive arrangement when the landing leg is fixed, the overhead traveling crane can be under the drive of self drive system along the overhead traveling crane slide is relative to main truss 1 moves longitudinally the mode and all adopts conventional bridge girder erection machine structure, does not need to describe here again. This application is through many the overhead traveling crane, a plurality of preceding landing leg, a plurality of well landing leg and a plurality of back landing leg cooperate, demolish multilayer girder stride footpath and arrange the inconsistent prefabricated bridge and substructure of direction, can adopt same set of prefabricated new bridge pier, bent cap and girder of equipment fixing after the old bridge is demolishd, and above-mentioned process specifically uses four the overhead traveling crane, two preceding landing leg, three well landing leg and two the back landing leg explains as the example, and concrete step is as follows:
the method comprises the following steps: installing the dismantling and building integrated machine, arranging a first crown block 2, a second crown block 3, a third crown block 4 and a fourth crown block 5 on a main truss 1, arranging a first rear support leg 6, a second rear support leg 7, a first middle support leg 8, a second middle support leg 9, a third middle support leg 10, a first front support leg 11 and a second front support leg 12 below the main truss, and after the installation is finished, in an initial state as shown in figure 1, wherein the front support leg, the middle support leg and the rear support leg are all supported on a bridge floor;
step two: as shown in fig. 2, the third overhead girder 4 and the fourth overhead girder 5 are positioned in the first span between the pier No. N0 and the pier No. N1, the first overhead girder is cut, and the first overhead girder is lifted and hung onto the girder transporting flat car 13 through the third overhead girder 4 and the fourth overhead girder 5;
step three: as shown in fig. 3, the first front leg 11 is supported on pier No. N1, the cut first middle-span main beam is lifted and hung to the girder transporting flat car 13 by the fourth crown car 5, and the second top-span main beam between the cut pier No. N2 and pier No. N1 is lifted and hung to the girder transporting flat car 13 by the second crown car 3 and the third crown car 4;
step four: as shown in fig. 4, the demolition and construction machine moves backward for a span, and the front support leg, the middle support leg and the rear support leg move backward; moving the second front leg 12 backwards, adjusting the length of the second front leg to enable the second front leg to be supported on the first bottom spanning main beam in a floor mode at the pier number N1, moving the first front leg 11 backwards, and adjusting the length of the first front leg to enable the first front leg to be supported on the pier number N2; moving the first rear support leg 6, the second rear support leg 7, the first middle support leg 8, the second middle support leg 9 and the third middle support leg 10 backwards, and supporting on the bridge deck;
step five: as shown in fig. 5, a fourth crown block 5 is adopted to remove the second middle-span main beam, and the second crown block 3 and a third crown block 4 lift and hang the third top-span main beam between the cut pier number N3 and pier number N2 to the girder transporting flat car 13;
step six: as shown in fig. 6, a fourth crown block 5 is adopted to lift and hang the cut N1 pier capping beam and pier stud to the girder transporting flat car 13, a third day car 4 is synchronously adopted to lift and hang the cut third span middle layer girder to the girder transporting flat car 13, and a first crown block 2 and a second crown block 3 are adopted to lift and hang the cut fourth span top layer girder between the N4 pier and the N3 pier to the girder transporting flat car 13; a truck crane 14 is adopted to remove the first bottom-spanning main beam;
step seven: and repeating the process from the fourth step to the sixth step, and continuously removing the main beam and the pier stud of the subsequent span.
After the bridge is dismantled, constructing a pile foundation of a newly-built bridge, after the pile foundation is constructed, constructing a main beam and a pier stud of the new bridge by using the dismantling and building all-in-one machine, and reserving a first rear support leg 6, a first middle support leg 8, a third middle support leg 10 and a second front support leg 12 in the newly-built construction process; along the bridge erection direction, during the initial operating mode: the construction of the prefabricated beam for the first span between the pier body No. D0, the pier body No. D0, the pier body No. D0, the pier structure No. D1 and the pier body No. D0 and the pier body No. D1 is completed, and the new construction of the bridge comprises the following steps:
step eight: the dismounting and building integrated machine is installed, the initial state after the installation is finished is shown in fig. 7, at the moment, the second front supporting leg 12 is supported in a floor mode at the position of a pile foundation D3, the third middle supporting leg 10 is supported on a pier body D2, and the first middle supporting leg 8 and the first rear supporting leg 6 are supported on the bridge floor of the first span precast beam;
step nine: as shown in fig. 8, a first crown block 2 and a second crown block 3 are adopted to hoist a second span main beam between a pier body No. D1 and a pier body No. D2, a third crown block 4 and a fourth crown block 5 are adopted to hoist a prefabricated pier No. D3, and a pier stud No. D3 and a cover beam are constructed;
step ten: as shown in fig. 9, the demolition and construction integrated machine moves forward by one span; advancing the second front supporting leg to support at a pile foundation D4; advancing the first middle leg 8 and the first rear leg 6 to the deck supported on the second span precast beam; moving the third middle leg 10 forward to support on pier body No. D3;
step eleven: and repeating the ninth step to the tenth step, and continuing constructing subsequent span main beams and pier columns.
In the process, the main truss 1 covers a plurality of spans of the prefabricated bridge, a plurality of front support legs, a plurality of middle support legs and a plurality of rear support legs provide multi-point support to ensure the stability of the main truss 1, so that a plurality of crown blocks can have a plurality of working surfaces to lift and hang the main beam, the cover beam and the pier stud simultaneously, a plurality of layers of main beams and pier stud cover beams can be detached, and the detaching efficiency is high. When newly-built bridge, can divide different working faces and install prefabricated bridge mound, bent cap and girder simultaneously, improve newly-built bridge construction quality and efficiency of construction. The construction and demolition are combined, the upper part structure and the lower part structure of the bridge are integrally constructed, the construction working face is concentrated, other large-scale hoisting equipment is not needed, the surrounding traffic is not influenced, and the traffic operation safety can be guaranteed.
In another embodiment, along the dismantling direction of the prefabricated bridge, the front support leg, the middle support leg and the rear support leg are sequentially arranged below the main truss from front to back; the middle supporting leg is supported on the bridge deck or pier top of the prefabricated bridge; the rear supporting legs are supported on the bridge deck of the prefabricated bridge. In this case, the front leg, the middle leg, and the rear leg are fixedly connected to a structure at a support location when the front leg, the middle leg, and the rear leg are used as supports, and the fixed connection is released when the legs need to be moved.
In another embodiment, the vertical telescopic structure comprises:
a leg cross member 15 provided at a lower end of the front leg; an electric hoist 22 is fixedly arranged on the supporting leg beam;
a first sleeve 16, one end of which is fixedly connected with the leg beam 15;
a second sleeve 17 extending into the other end of the first sleeve 16 and detachably connected to the first sleeve 16;
a third sleeve 18 extending into the second sleeve 17, the third sleeve 18 being connected to the second sleeve 17 by a hydraulic ram 20;
the outer walls of the first sleeve 16, the second sleeve 17 and the third sleeve 18 are all provided with lifting lugs connected with the electric hoist 22, and the length of the first sleeve 16 stretched into the second sleeve 17 and the length of the second sleeve 17 stretched into the third sleeve 18 are adjusted through the electric hoist 22.
In this technical solution, when the length of the front leg needs to be adjusted, the connection between the second casing 17 and the first casing 16 is first released, then the second casing 16 is placed on or down through the electric block 22, and the first casing 16 and the second casing 17 are connected after reaching a predetermined position. Likewise, the length of the third sleeve 18 extending into the second sleeve 17 can be adjusted by means of the electric block 22 in the same way. The bottom of the third casing 18 is fixedly connected with an anchoring base 19 for connecting with a bridge deck, a pier top or a pile cap of the prefabricated bridge, so as to provide stable support. After the telescopic length of the front supporting leg is adjusted greatly through the electric hoist 22, the telescopic length of the front supporting leg is finely adjusted through the hydraulic oil cylinder 20 according to the actual distance between the anchoring base 19 and the supporting position.
In another embodiment, the second sleeve 17 and the first sleeve 16, and the third sleeve 18 and the second sleeve 17 are fixed by pins.
In this embodiment, specifically, a plurality of pin holes are formed at intervals on the side walls of the first sleeve 16, the second sleeve 17, and the third sleeve 18, and the second sleeve 17 and the first sleeve 16 and the third sleeve 18 and the second sleeve 17 are fixed by inserting pin shafts into the pin holes. The pin holes can be arranged in multiple rows to meet the requirements of different heights.
In another embodiment, the number of the front supporting legs is two, and the front supporting legs are sequentially arranged at the front end of the main truss along the dismantling direction of the prefabricated bridge. According to the method, the length of the front supporting leg can be adjusted through the vertical telescopic structure in the dismantling process along with dismantling and newly building of the main beam and the pier of the prefabricated bridge, so that the front supporting leg can be supported on the bridge floor, the pier column and the pile foundation pile cap respectively.
In another embodiment, the driving device comprises a lead screw 26 and a ball nut 25 matched with the lead screw 26, the lead screw 24 is fixedly arranged beside the leg slideway 23, and the lead screw 26 is driven to rotate by a motor 27; a sliding block 24 is fixedly connected to one side of the ball nut 25, and the motor 27 drives the lead screw 26 to rotate so as to drive the sliding block 24 to slide in the leg slideway 23; the front support leg, the middle support leg and the rear support leg are respectively fixedly connected with the ball nuts 25 of the corresponding driving devices.
In this technical solution, the motor 17 drives the screw rod 26 to rotate, so that the ball nut 25 can make a linear motion, and the ball nut drives the slider 24 to slide in the leg slideway 23, thereby driving the front leg, the middle leg or the rear leg fixedly connected with the ball nut 25 to longitudinally move along the leg slideway 23.
While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides a prefabricated bridge is torn open and is built all-in-one which characterized in that includes:
the main truss is horizontally arranged along the length direction of the prefabricated bridge; the top surface of the main truss is provided with a crown block slideway, and the bottom surface of the main truss is provided with a supporting leg slideway;
each crown block is connected with the crown block slide way in a sliding manner and used for lifting a main beam, a cover beam and a pier stud of the prefabricated bridge;
the front support legs, the middle support legs and the rear support legs are driven by driving devices to slide along the support leg slide ways respectively; the front supporting leg comprises a vertical telescopic structure, and the length of the front supporting leg is adjusted through the vertical telescopic structure, so that the front supporting leg can be supported on a bridge deck, a pier top or a pile foundation bearing platform of the prefabricated bridge.
2. The precast bridge girder dismantling and building integrated machine according to claim 1, wherein the front support leg, the middle support leg and the rear support leg are sequentially arranged below the main truss from front to back along a dismantling direction of the precast bridge girder; the middle supporting leg is supported on the bridge deck or pier top of the prefabricated bridge; the rear supporting legs are supported on the bridge deck of the prefabricated bridge.
3. The precast bridge dismantling and building all-in-one machine according to claim 1, wherein the vertical telescopic structure comprises:
the supporting leg cross beam is arranged at the lower end of the front supporting leg; an electric hoist is fixedly arranged on the supporting leg beam;
one end of the first sleeve is fixedly connected with the supporting leg cross beam;
the second sleeve extends into the other end of the first sleeve and is detachably connected with the first sleeve;
the third sleeve extends into the second sleeve, and is connected with the second sleeve through a hydraulic oil cylinder;
the outer walls of the first sleeve, the second sleeve and the third sleeve are provided with lifting lugs connected with the electric hoist, and the electric hoist is used for adjusting the length of the first sleeve and the length of the second sleeve.
4. The precast bridge erecting and constructing integrated machine according to claim 3, wherein the second sleeve and the first sleeve, and the third sleeve and the second sleeve are fixed through pin shafts.
5. The precast bridge girder erection and disassembly all-in-one machine as claimed in claim 4, wherein the number of the front legs is two, and the front legs are sequentially arranged at the front end of the main truss along the dismantling direction of the precast bridge girder.
6. The precast bridge erecting and dismantling all-in-one machine according to claim 1, wherein the driving device comprises a screw and a ball nut matched with the screw, the screw is fixedly arranged beside the support leg slideway, and the screw is driven to rotate by a motor; one side of the ball nut is fixedly connected with a sliding block, and the motor drives the lead screw to rotate so as to drive the sliding block to slide in the supporting leg slideway; the front supporting leg, the middle supporting leg and the rear supporting leg are respectively and fixedly connected with the ball nuts of the corresponding driving devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122363698.1U CN216194059U (en) | 2021-09-28 | 2021-09-28 | Prefabricated bridge is torn open and is built all-in-one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122363698.1U CN216194059U (en) | 2021-09-28 | 2021-09-28 | Prefabricated bridge is torn open and is built all-in-one |
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| CN216194059U true CN216194059U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122363698.1U Active CN216194059U (en) | 2021-09-28 | 2021-09-28 | Prefabricated bridge is torn open and is built all-in-one |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478486A (en) * | 2022-11-03 | 2022-12-16 | 四川交通职业技术学院 | Erecting method of pier-beam integrated construction bridge girder erection machine |
| JP7215633B1 (en) * | 2022-10-14 | 2023-01-31 | Ｊｆｅエンジニアリング株式会社 | Bridge replacement device and bridge replacement method |
-
2021
- 2021-09-28 CN CN202122363698.1U patent/CN216194059U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7215633B1 (en) * | 2022-10-14 | 2023-01-31 | Ｊｆｅエンジニアリング株式会社 | Bridge replacement device and bridge replacement method |
| CN115478486A (en) * | 2022-11-03 | 2022-12-16 | 四川交通职业技术学院 | Erecting method of pier-beam integrated construction bridge girder erection machine |
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