CN113250094A

CN113250094A - Method for erecting designed steel box girder in highway bridge

Info

Publication number: CN113250094A
Application number: CN202110618017.3A
Authority: CN
Inventors: 孙海宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-08-13
Anticipated expiration: 2041-06-03
Also published as: CN113250094B

Abstract

The invention discloses a method for erecting a designed steel box girder in a highway bridge, which comprises a first base, wherein four first supporting columns are fixedly arranged at the end part of the first base, reinforcing ribs are fixedly arranged among the four first supporting columns, a first mounting table is fixedly arranged at the end part of each first supporting column, a side plate is fixedly arranged at the end part of the side surface of each first mounting table, a second mounting table is movably arranged at the end part of each first mounting table, the end part of each second mounting table is symmetrically provided with a structure which is the same as that of the end part of the first mounting table, threaded holes are formed in the side walls of the first supporting columns, bolts are arranged on the threads of the inner walls of the threaded holes, plate grooves are formed in the opposite surfaces of the first supporting columns, a girder body mechanism is movably arranged at the end part of the first mounting table, the girder body mechanism comprises a steel box girder, so that the first base and the second base can be completely positioned on the same horizontal line before hoisting, and displacement caused by gravity pressing between the first base and the second base in the mounting process is effectively avoided, the hoisting quality is affected.

Description

Method for erecting designed steel box girder in highway bridge

Technical Field

The application relates to the technical field of highway bridges, in particular to a method for erecting a designed steel box girder in a highway bridge.

Background

The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-place box girder. The box girder prefabricated in the independent site can be erected after the lower project is finished by combining the bridge girder erection machine, so that the project progress can be accelerated, and the construction period can be saved; the cast-in-place box girder is mainly used for large-scale continuous bridges, the common materials are divided into two types, one is a prestressed reinforced concrete box girder, the other is a steel box girder, wherein the prestressed reinforced concrete box girder is constructed on site, some transverse prestressing is also arranged besides longitudinal prestressing, the steel box girder is generally processed in a factory and then transported to the site for installation, and the steel box girder has an all-steel structure and also has a part of reinforced concrete pavement layers, wherein the steel box girder is also called a steel plate box girder and is a common structural form of large-span bridges, is generally used on bridges with larger span, and is called the steel box girder because the shape is like a box.

As disclosed in the chinese patent: the erection, pushing and sliding method of the steel box girder has the following publication number: CN101967800A, it can realize that continuous steel box girder is safe, quick, accurate indulges to move in place, can not set up upper and lower slide to practice thrift a large amount of track equipment and labour, and do not occupy the river course space. The thrustor that adopts simple structure, installation are compact, and the durability degree is high, has advantages such as noiselessness, no vibrations, low cost, and wherein the wearability of sliding material, sliding capability are good, move the roof beam in-process, push away through hydraulic pressure and do not have impact inertia, and the horizontal thrust that the pier receives is little, impels steadily, and the top is pushed away and is indulged moving speed controllable, nevertheless has following not enough when its uses:

1. because the base uses the loop wheel machine to lay, consequently can't realize relative perpendicular at the in-process of erectting, need debug it repeatedly to guarantee that the steel box girder is relatively stable when erectting.

2. When the crane lifts the steel box girder and then erects the steel box girder, the steel box girder can be suspended in the air and swayed, the erection position of the steel box girder is difficult to align when swayed, erection needs to be carried out after the steel box girder is static, and time is wasted.

3. When the steel box girder is erected, the steel box girder needs to be finely adjusted, the existing operation method is to adjust the steel box girder by using a crane, but the adjustment is difficult because the crane has larger moving amplitude.

Disclosure of Invention

The invention aims to provide a method for erecting a designed steel box girder in a highway bridge, which aims to solve the problems in the background technology.

The embodiment of the application adopts the following technical scheme: a method for erecting a designed steel box girder in a highway bridge comprises a first base, wherein four first support columns are fixedly arranged at the end part of the first base, reinforcing ribs are fixedly arranged among the four first support columns, a first mounting table is fixedly arranged at the end part of each first support column, a side plate is fixedly arranged at the end part of the side surface of each first mounting table, a second mounting table is movably arranged at the end part of each first mounting table, the end part of each second mounting table is symmetrically provided with a structure which is the same as that of the end part of each first mounting table, threaded holes are formed in the side walls of the first support columns, bolts are arranged on the inner walls of the threaded holes in a threaded manner, and plate grooves are formed in the surfaces, opposite to the first support columns;

and a beam body mechanism is movably arranged at the end part of the first mounting table.

The beam body mechanism comprises a steel box beam, the end part of the steel box beam is movably mounted with a first mounting table, a connecting column is fixedly mounted on the side wall of the steel box beam, a connecting groove is formed in the side wall of the steel box beam, a first limiting groove is formed in the side wall of the inner wall of the connecting groove, lifting hooks are fixedly mounted at four corners of the end part of the connecting groove, lifting holes are formed in the upper surfaces of the lifting hooks, a connecting plate is fixedly mounted at the end part of the steel box beam, and limiting plates are fixedly mounted at two ends of the side wall of the connecting plate;

and an adjusting mechanism is movably mounted on the side wall of the second mounting table.

The adjusting mechanism comprises a movable column, the movable column is movably mounted on the side wall of the second mounting table, a connecting strip is fixedly mounted at the end part of the side wall of the movable column, a circular ring is fixedly mounted at one end, away from the movable column, of the connecting strip, a toothed belt is sleeved in the middle of the surface of the movable column, the end part of the inner wall of the toothed belt is meshed with a toothed disc, threaded rods are fixedly mounted on the side wall of the toothed disc, and the two threaded rods are respectively mounted inside the first mounting table and the second mounting table in a threaded manner;

one end of the threaded rod, which is far away from the fluted disc, is fixedly provided with a moving mechanism.

The moving mechanism comprises a limiting disc, the side wall of the limiting disc is fixedly installed with a threaded rod, a limiting strip is movably sleeved on the surface of the limiting disc, a column groove is formed in one surface, close to the threaded rod, of the limiting strip, a limiting groove II is formed in the inner wall of the column groove, the limiting disc is movably installed inside the limiting groove II, and a sliding sleeve is movably installed on the side wall of the limiting strip;

and two rotating mechanisms are sleeved on the surfaces of the bolts.

The rotating mechanism comprises a connecting block, the connecting block is sleeved on the surfaces of two bolts, a hydraulic motor body is fixedly installed on the side wall of the connecting block, a connecting column is fixedly installed at the end part of the side wall of the connecting block, the hydraulic motor body comprises an output shaft, a disc is fixedly installed at the output end of the output shaft, a sliding column is fixedly installed on the side, away from the output shaft, of the disc, a sliding strip is sleeved on the surface of the sliding column, an arc-shaped groove is formed in the end part of the sliding strip, and a fixing block is fixedly installed in the middle of the inner wall of the arc-shaped groove;

a limiting mechanism is arranged inside the first base.

The limiting mechanism comprises a clamping plate, the clamping plate is movably arranged in the first base, a sliding plate is fixedly mounted on the side wall of the clamping plate, and a pull block is fixedly mounted on one side, far away from the clamping plate, of the sliding plate.

Preferably, the second mount table tip has the second base through second support column fixed mounting, bar groove one has been seted up to the second base lateral wall, bar groove two has been seted up to bar groove inner wall tip, the same structure with second base lateral wall has been seted up to the first base lateral wall, slide and cardboard respectively movable mounting be inside bar groove one and bar groove two.

Preferably, the side wall of the limiting strip is provided with a rectangular groove, the inner wall of the sliding sleeve is movably provided with a fixing column, and two ends of the fixing column are respectively and fixedly arranged on the inner wall of the rectangular groove.

Preferably, the connecting block is movably arranged inside the plate groove, and the end part of the bolt penetrates through the threaded hole and then is arranged inside the connecting block in a threaded manner.

Preferably, a circular groove is formed in the end portion of the side wall of the sliding strip, and the end portion, far away from the connecting block, of the connecting column is movably arranged inside the circular groove.

In order to overcome the defects of the prior art, the invention also provides a method for erecting the designed steel box girder in the highway bridge, which comprises the following specific steps:

s1: first base is hoisted with a 25 ton loop wheel machine earlier and is placed subaerial, and the removal is pulled the piece left this moment, and the slide that drives fixed mounting with it under the removal of pulling the piece takes place to remove left, and the slide drives fixed mounting's cardboard thereupon and takes place to remove left this moment, and slide and cardboard are whole to remove left this moment and insert bar groove one and bar groove two inside respectively and carry on spacingly to the second base.

S2: the method comprises the following steps of using a 350-ton crane to install the steel box girder, specifically, enabling the crane to have a working radius of 16m, enabling the arm length to be 31m, enabling the elevation angle of a suspension arm to be 58.9 degrees, and enabling the rated lifting capacity to be 68 tons, transporting the steel box girder to the position near a first base by a girder transporting vehicle, enabling a hook on the crane to penetrate through a lifting hole and then placing the steel box girder between two limiting strips, touching a sliding sleeve in the falling process of the steel box girder at the moment, driving the sliding sleeve to rotate on the surface of a fixed column, generating downward force on the steel box girder under the relative rotation of the sliding sleeve, and guiding the steel box girder to vertically fall at the moment.

S3: can continue the installation forward in proper order after first row steel box girder installation is accomplished, the steel box girder that lies in the front row this moment can place earlier on first mount table and second mount table surface when the installation, pull the davit right again and will lie in the steel box girder of front row and pull to the position relative with back row steel box girder, pull the steel box girder backward this moment, the steel box girder that lies in the front row slides along the curb plate lateral wall and drives connecting plate and the limiting plate fixed with it and insert inside spread groove and the spacing groove of back row steel box girder, accomplish the connection between each other, it is inseparabler to make to connect between the steel box girder when using this equipment, it is seamless, can demolish first base after the completion of erectting in proper order, accomplish and erect.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

one of them, place first base hoist with the loop wheel machine earlier during the use subaerial, the removal draws the piece this moment left, the slide that drives fixed mounting with it takes place to remove left under the removal that draws the piece, the cardboard that the slide drove fixed mounting with it takes place to remove left thereupon this moment, slide and cardboard are whole to be removed left this moment and insert bar groove one respectively and bar groove two inside carry on spacingly to the second base, make and to be in on same water flat line completely between first base and the second base before carrying out hoist and mount, effectively avoided taking place the displacement under the gravity pressure between first base and the second base in the installation, influence hoist and mount quality.

And secondly, the hook on the crane is placed between the two limiting strips after penetrating through the lifting hole during use, the sliding sleeve is touched at the falling process of the steel box girder at the moment, the sliding sleeve is driven to rotate on the surface of the fixed column, downward force is generated on the steel box girder under the relative rotation of the sliding sleeve, the steel box girder is guided to fall vertically at the moment, so that the equipment can ensure that the steel box girder is erected at an angle when in use, the angle does not need to be adjusted repeatedly when the steel box girder is erected, and the steel box girder is more labor-saving and convenient.

Third, can continue the installation forward in proper order after the installation of first row steel box girder, the steel box girder that lies in the front row this moment can place earlier on first mount table and second mount table surface when the installation, pull the davit right again and will lie in the steel box girder of front row and pull to the position relative with back row steel box girder, pull the steel box girder backward this moment, the steel box girder that lies in the front row slides along the curb plate lateral wall and drives connecting plate and the limiting plate fixed with it and insert the spread groove and the spacing inslot portion of back row steel box girder, accomplish the connection between each other, make this equipment connect inseparabler and seamless between the steel box girder when using.

Fourthly, when the length of the steel box girder is different, the ring can rotate, the ring drives the connecting strip fixedly installed with the ring to rotate at the moment, the movable column fixedly installed with the connecting strip is driven to rotate under the rotation of the connecting strip, the toothed belt meshed with the movable column is driven to rotate under the rotation of the movable column at the moment, the toothed belt drives the toothed disc meshed with the toothed disc to rotate, the toothed disc drives the threaded rod fixedly installed with the toothed disc to rotate and move forwards at the moment, the threaded rod drives the limiting disc fixedly installed with the threaded rod to rotate and move forwards, the limiting disc drives the limiting strip movably installed with the limiting disc to adjust the front and back positions, the steel box girder limiting adjusting device can perform limiting adjustment on the steel box girder of any size when in use, and the application range is wider

Fifthly, also can twist the screw hole with the bolt before the use inside, open the hydraulic motor body this moment, drive under the effect of hydraulic motor body and take place to rotate thereupon rather than the disc through output shaft fixed mounting, the traveller that drives fixed mounting with it under the rotation of disc takes place to rotate inside the arc wall, the draw runner is stirred the spliced pole under rotating this moment for this equipment can finely tune the horizontal position of steel case roof beam when using, it is more convenient laborsaving to adjust steel case roof beam initial position.

It is six, place the steel box girder between two spacing after passing the lifting eye with the couple on the loop wheel machine during use, when the lifting hook of loop wheel machine hooked into the lifting eye inside, treat to place the lifting hook downwards after the installation of steel box girder, the lifting hook can be landing downwards by the inside landing of lifting eye under the effect of gravity under the effect of the tractive power that does not make progress this moment, make this equipment accomplish the installation back of steel box girder and do not need the artificial lifting hook that takes off when using, practiced thrift installation time.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the connection structure of the steel box girder of the present invention;

FIG. 3 is a schematic diagram of a limiter link explosion configuration according to the present invention;

FIG. 4 is a schematic view of a toothed belt connection according to the present invention;

FIG. 5 is a schematic view of the connection plate connection explosion structure of the present invention;

FIG. 6 is a schematic view of a disk connection structure of the present invention;

FIG. 7 is a schematic view of the connection structure of the position-limiting strip of the present invention;

FIG. 8 is a schematic view of a hook attachment configuration of the present invention;

FIG. 9 is a schematic view of a first mounting platform connection structure according to the present invention;

fig. 10 is a schematic view of a second mounting station connection explosion configuration of the present invention.

In the figure: 11. a first base; 12. a first support column; 13. reinforcing ribs; 14. a first mounting table; 15. a side plate; 16. a second mounting table; 17. a threaded hole; 18. a bolt; 19. a plate groove; 21. a steel box girder; 22. connecting grooves; 23. a first limiting groove; 24. a hook; 25. lifting holes; 26. a connecting plate; 27. a limiting plate; 31. a movable post; 32. a connecting strip; 33. a circular ring; 34. a toothed belt; 35. a fluted disc; 36. a threaded rod; 41. a limiting disc; 42. a limiting strip; 43. a column groove; 44. a second limiting groove; 45. a sliding sleeve; 51. connecting blocks; 52. a hydraulic motor body; 53. connecting columns; 54. a disc; 55. a traveler; 56; a slider, 57; arc-shaped grooves 58 and fixing blocks; 61. clamping a plate; 62. a slide plate; 63. pulling the block; 64. a first strip-shaped groove; 65. and a second strip-shaped groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

In a first embodiment, referring to fig. 2, fig. 5, fig. 7, fig. 8, fig. 9 and fig. 10, the present invention provides a technical solution for erecting a steel box girder designed in a highway bridge: the support device comprises a first base 11, wherein four first support columns 12 are fixedly mounted at the end part of the first base 11, reinforcing ribs 13 are fixedly mounted among the four first support columns 12, a first mounting table 14 is fixedly mounted at the end part of each first support column 12, a side plate 15 is fixedly mounted at the end part of the side surface of each first mounting table 14, a second mounting table 16 is movably mounted at the end part of each first mounting table 14, the end parts of the second mounting tables 16 are symmetrically provided with structures the same as those of the end parts of the first mounting tables 14, threaded holes 17 are formed in the side walls of the first support columns 12, bolts 18 are mounted on the inner walls of the threaded holes 17 in a threaded manner, and plate grooves 19 are formed in the opposite surfaces of the first support columns 12;

the end part of the first mounting table 14 is movably provided with a beam body mechanism.

The beam body mechanism comprises a steel box beam 21, the end part of the steel box beam 21 is movably mounted with a first mounting table 14, a connecting column is fixedly mounted on the side wall of the steel box beam 21, a connecting groove 22 is formed in the side wall of the steel box beam 21, a first limiting groove 23 is formed in the side wall of the inner wall of the connecting groove 22, a lifting hook 24 is fixedly mounted at the four corners of the end part of the connecting groove 22, a lifting hole 25 is formed in the upper surface of the lifting hook 24, a connecting plate 26 is fixedly mounted at the end part of the steel box beam 21, and limiting plates 27 are fixedly mounted at both ends of the side wall of the connecting plate 26;

an adjusting mechanism is movably mounted on the side wall of the second mounting table 16.

The adjusting mechanism comprises a movable column 31, the movable column 31 is movably mounted on the side wall of the second mounting table 16, a connecting strip 32 is fixedly mounted at the end part of the side wall of the movable column 31, a circular ring 33 is fixedly mounted at one end, far away from the movable column 31, of the connecting strip 32, a toothed belt 34 is sleeved in the middle of the surface of the movable column 31, the end parts of the inner walls of the toothed belt 34 are respectively meshed with a toothed disc 35, a threaded rod 36 is fixedly mounted on the side wall of the toothed disc 35, and the two threaded rods 36 are respectively mounted inside the first mounting table 14 and the second mounting table 16 in a threaded manner;

one end of the threaded rod 36 far away from the fluted disc 35 is fixedly provided with a moving mechanism.

The moving mechanism comprises a limiting disc 41, the side wall of the limiting disc 41 is fixedly installed with the threaded rod 36, a limiting strip 42 is movably sleeved on the surface of the limiting disc 41, grooves matched with the limiting strip 42 are formed in the upper surfaces of the first installation platform 14 and the second installation platform 16, a column groove 43 is formed in one side, close to the threaded rod 36, of the limiting strip 42, a second limiting groove 44 is formed in the inner wall of the column groove 43, the limiting disc 41 is movably installed inside the second limiting groove 44, a sliding sleeve 45 is movably installed on the side wall of the limiting strip 42, a rectangular groove is formed in the side wall of the limiting strip 42, a fixed column is movably installed on the inner wall of the sliding sleeve 45, and two ends of the fixed column are respectively and fixedly installed on the inner wall of the rectangular groove;

the surfaces of the two bolts 18 are sleeved with rotating mechanisms.

The rotating mechanism comprises a connecting block 51, the connecting block 51 is movably arranged in the plate groove 19, the end part threads of the bolts 18 penetrate through the threaded holes 17 and then are arranged in the connecting block 51 in a threaded manner, the connecting block 51 is sleeved on the surfaces of the two bolts 18, a hydraulic motor body 52 is fixedly arranged on the side wall of the connecting block 51, a connecting column 53 is fixedly arranged on the end part of the side wall of the connecting block 51, the hydraulic motor body 52 comprises an output shaft, a disc 54 is fixedly arranged at the output end of the output shaft, a sliding column 55 is fixedly arranged on one surface, away from the output shaft, of the disc 54, a sliding strip 56 is sleeved on the surface of the sliding column 55, a circular groove is formed in the end part of the side wall of the sliding strip 56, the end part, away from the connecting column 51, is movably arranged in the circular groove, an arc-shaped groove 57 is formed in the end part of the sliding strip 56, and a fixing block 58 is fixedly arranged in the middle part of the inner wall of the arc-shaped groove 57;

a limiting mechanism is arranged inside the first base 11.

Stop gear includes cardboard 61, establish inside first base 11 in the cardboard 61 activity, cardboard 61 lateral wall fixed mounting has slide 62, one side fixed mounting that cardboard 61 was kept away from to slide 62 has a

pull block

63, 16 tip of second mount table have the second base through second support column fixed mounting, bar groove one 64 has been seted up to the second base lateral wall, bar groove two 65 has been seted up to bar groove one 64 inner wall tip, the same structure with second base lateral wall has been seted up to first base 11 lateral wall, slide 62 and cardboard 61 respectively movable mounting inside bar groove one 64 and bar groove two 65.

first step, place subaerial with first base 11 hoist with a 25 ton loop wheel machine earlier during the use, this moment remove the piece 63 of pulling left, the slide 62 that drives fixed mounting with it under the removal of pulling the piece 63 takes place to remove left, slide 62 drives fixed mounting's cardboard 61 with it and takes place to remove left thereupon this moment, slide 62 and cardboard 61 are whole to remove left this moment and insert bar groove one 64 and bar groove two 65 inside respectively and carry on spacingly to the second base, make and can be in completely on same water flat line between first base 11 and the second base before carrying out the hoist and mount, effectively avoided in the installation between first base 11 and the second base taking place the displacement under the gravity compels, influence hoist and mount quality.

And secondly, installing the steel box girder 21 by using a 350-ton crane, specifically, the crane has a working radius of 16m, an arm length of 31m, a boom elevation angle of 58.9 degrees and a rated lifting capacity of 68 tons, transporting the steel box girder 21 to a position near the first base 11 by using a girder transporting vehicle, placing the steel box girder 21 between two limiting strips 42 after a hook on the crane penetrates through a lifting hole 25, touching the sliding sleeve 45 in the falling process of the steel box girder 21 at the moment, driving the sliding sleeve 45 to rotate on the surface of a fixed column, generating downward force on the steel box girder 21 under the relative rotation of the sliding sleeve 45, and guiding the steel box girder 21 to vertically fall at the moment, so that the device can ensure the erection angle of the steel box girder 21 when in use, does not need to repeatedly adjust the angle during erection, and is more labor-saving and convenient.

And thirdly, when the first row of steel box girders 21 are installed, the first row of steel box girders 21 can be sequentially installed forwards, at the moment, the steel box girders 21 in the front row can be placed on the surfaces of the first installation platform 14 and the second installation platform 16 firstly, then the suspension arms are pulled rightwards to pull the steel box girders 21 in the front row to the positions opposite to the steel box girders 21 in the rear row, at the moment, the steel box girders 21 are pulled backwards, the steel box girders 21 in the front row slide along the side walls of the side plates 15 to drive the connecting plates 26 and the limiting plates 27 fixed with the steel box girders to be inserted into the connecting grooves 22 and the limiting grooves I23 of the steel box girders 21 in the rear row, so that the connection between the steel box girders 21 is tighter and seamless when the device is used, and after the sequential erection is completed, the first base 11 can be detached to complete the erection.

In the second embodiment, referring to fig. 3 and 4, on the basis of the first embodiment, when the length of the steel box girder 21 is different, the ring 33 can be rotated, at this time, the ring 33 drives the connecting bar 32 fixedly mounted therewith to rotate, the connecting bar 32 drives the movable column 31 fixedly mounted therewith to rotate, at this time, the movable column 31 drives the toothed belt 34 engaged therewith to rotate, the toothed belt 34 drives the toothed disc 35 engaged therewith to rotate, at this time, the toothed disc 35 drives the threaded rod 36 fixedly mounted therewith to rotate and move forward, the threaded rod 36 drives the limiting disc 41 fixedly mounted therewith to rotate and move forward, at this time, the limiting disc 41 drives the limiting bar 42 movably mounted therewith to perform front-back position adjustment, so that the apparatus can perform limiting adjustment on the steel box girder 21 of any size when in use, and has a wider application range.

Example three: referring to figures 1 and 6 of the drawings,

when in use: on the basis of the first embodiment, the scheme can be replaced by screwing the bolt 18 into the threaded hole 17 before use, then opening the hydraulic motor body 52, driving the disc 54 fixedly mounted with the hydraulic motor body 52 through the output shaft to rotate along with the hydraulic motor body, driving the sliding column 55 fixedly mounted with the disc 54 to rotate in the arc-shaped groove 57 under the rotation of the disc 54, and shifting the connecting column by the sliding strip 56 under the rotation, so that the equipment can finely adjust the horizontal position of the steel box girder 21 when in use, and the adjustment of the initial position of the steel box girder 21 is more convenient and labor-saving.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a design steel box girder erection equipment in public road bridge roof beam, includes first base (11), first base (11) tip fixed mounting has four first support columns (12), four fixed mounting has strengthening rib (13) between first support column (12), first support column (12) tip fixed mounting has first mount table (14), its characterized in that: a side plate (15) is fixedly mounted at the end part of the side surface of the first mounting table (14), a second mounting table (16) is movably mounted at the end part of the first mounting table (14), structures identical to those of the end part of the first mounting table (14) are symmetrically arranged at the end part of the second mounting table (16), a threaded hole (17) is formed in the side wall of the first supporting column (12), a bolt (18) is mounted on the inner wall of the threaded hole (17) in a threaded manner, and plate grooves (19) are formed in the opposite surface of the first supporting column (12);

and a beam body mechanism is movably arranged at the end part of the first mounting table (14).

2. The bridge erecting device for the steel box girder designed in the highway bridge according to claim 1, wherein: the beam body mechanism comprises a steel box beam (21), a connecting column is fixedly mounted on the side wall of the steel box beam (21), the end part of the steel box beam (21) is movably mounted with a first mounting table (14), a connecting groove (22) is formed in the side wall of the steel box beam (21), a first limiting groove (23) is formed in the side wall of the inner wall of the connecting groove (22), lifting hooks (24) are fixedly mounted at four corners of the end part of the connecting groove (22), lifting holes (25) are formed in the upper surface of each lifting hook (24), a connecting plate (26) is fixedly mounted at the end part of the steel box beam (21), and limiting plates (27) are fixedly mounted at two ends of the side wall of each connecting plate (26);

and an adjusting mechanism is movably arranged on the side wall of the second mounting table (16).

3. The bridge erecting device for the steel box girder designed in the highway bridge as recited in claim 2, wherein: the adjusting mechanism comprises a movable column (31), the movable column (31) is movably mounted on the side wall of the second mounting table (16), a connecting strip (32) is fixedly mounted at the end part of the side wall of the movable column (31), a circular ring (33) is fixedly mounted at one end, far away from the movable column (31), of the connecting strip (32), a toothed belt (34) is sleeved in the middle of the surface of the movable column (31), the end part of the inner wall of the toothed belt (34) is respectively meshed with a toothed disc (35), threaded rods (36) are fixedly mounted on the side wall of the toothed disc (35), and the two threaded rods (36) are respectively mounted inside the first mounting table (14) and the second mounting table (16) in a threaded manner;

and a moving mechanism is fixedly mounted at one end of the threaded rod (36) far away from the fluted disc (35).

4. The bridge erecting device for the steel box girder designed in the highway bridge as recited in claim 3, wherein: the moving mechanism comprises a limiting disc (41), the side wall of the limiting disc (41) is fixedly installed with a threaded rod (36), a limiting strip (42) is movably sleeved on the surface of the limiting disc (41), a column groove (43) is formed in the side, close to the threaded rod (36), of the limiting strip (42), a second limiting groove (44) is formed in the inner wall of the column groove (43), the limiting disc (41) is movably installed inside the second limiting groove (44), and a sliding sleeve (45) is movably installed on the side wall of the limiting strip (42);

the surfaces of the two bolts (18) are sleeved with rotating mechanisms.

5. The bridge erecting device for the steel box girder designed in the highway bridge as recited in claim 4, wherein: the rotating mechanism comprises a connecting block (51), the connecting block (51) is sleeved on the surfaces of the two bolts (18), the side wall of the connecting block (51) is fixedly provided with a hydraulic motor body (52), the end part of the side wall of the connecting block (51) is fixedly provided with a connecting column (53), the hydraulic motor body (52) comprises an output shaft, a disc (54) is fixedly arranged at the output end of the output shaft, a sliding column (55) is fixedly arranged on one surface of the disc (54) far away from the output shaft, the surface of the sliding column (55) is sleeved with a sliding strip (56), the end part of the side wall of the sliding strip (56) is provided with a circular groove, the end part of one end of the connecting column (53) far away from the connecting block (51) is movably arranged in the circular groove, an arc-shaped groove (57) is formed in the end portion of the sliding bar (56), and a fixing block (58) is fixedly mounted in the middle of the inner wall of the arc-shaped groove (57);

a limiting mechanism is arranged inside the first base (11).

6. The bridge erecting device for the steel box girder designed in the highway bridge according to claim 5, wherein: the limiting mechanism comprises a clamping plate (61), the clamping plate (61) is movably arranged in the first base (11), a sliding plate (62) is fixedly mounted on the side wall of the clamping plate (61), and a pull block (63) is fixedly mounted on one side, far away from the clamping plate (61), of the sliding plate (62).

7. The bridge erecting device for the steel box girder designed in the highway bridge according to claim 6, wherein: second mount table (16) tip has the second base through second support column fixed mounting, bar groove one (64) have been seted up to the second base lateral wall, bar groove two (65) have been seted up to bar groove one (64) inner wall tip, the same structure with second base lateral wall has been seted up to first base (11) lateral wall, slide (62) and cardboard (61) movable mounting respectively inside bar groove one (64) and bar groove two (65).

8. The bridge erecting device for the steel box girder designed in the highway bridge as recited in claim 4, wherein: the limiting device is characterized in that a rectangular groove is formed in the side wall of the limiting strip (42), a fixing column is movably mounted on the inner wall of the sliding sleeve (45), and two ends of the fixing column are fixedly mounted on the inner wall of the rectangular groove respectively.

9. The bridge erecting device for the steel box girder designed in the highway bridge according to claim 5, wherein: the connecting block (51) is movably arranged in the plate groove (19), and the end part of the bolt (18) penetrates through the threaded hole (17) and then is arranged in the connecting block (51) in a threaded mode.

10. The method for erecting the designed steel box girder in the highway bridge according to the claims 1-9, which is characterized by comprising the following steps:

s1: firstly, a first base (11) is hoisted by a 25-ton crane and placed on the ground, at the moment, a pulling block (63) is moved leftwards, a sliding plate (62) fixedly installed with the pulling block (63) is driven to move leftwards under the movement of the pulling block, at the moment, the sliding plate (62) drives a clamping plate (61) fixedly installed with the sliding plate to move leftwards, at the moment, the sliding plate (62) and the clamping plate (61) integrally move leftwards and are respectively inserted into a first strip-shaped groove (64) and a second strip-shaped groove (65) to limit a second base;

s2: then, a (350) ton crane is used for mounting the steel box girder (21), specifically, the crane has a working radius of 16m, an arm length of 31m, a boom elevation angle of 58.9 degrees and a rated lifting capacity of 68 tons, at the moment, the girder transporting vehicle transports the steel box girder (21) to the position near the first base (11), at the moment, a hook on the crane penetrates through a lifting hole (25) and then places the steel box girder (21) between two limiting strips (42), at the moment, the sliding sleeve (45) is touched in the falling process of the steel box girder (21) to drive the sliding sleeve (45) to rotate on the surface of a fixed column, downward force is generated on the steel box girder (21) under the relative rotation of the sliding sleeve (45), and at the moment, the steel box girder (21) is guided to fall vertically;

s3: after the first row of steel box girders (21) are installed, the first row of steel box girders can be sequentially and continuously installed forwards, at the moment, the steel box girders (21) in the front row can be placed on the surfaces of the first installation platform (14) and the second installation platform (16) firstly, then the suspension arms are pulled rightwards to pull the steel box girders (21) in the front row to the positions opposite to the steel box girders (21) in the rear row, at the moment, the steel box girders (21) are pulled backwards, the steel box girders (21) in the front row slide along the side walls of the side plates (15) to drive the connecting plates (26) and the limiting plates (27) fixed with the steel box girders to be inserted into the connecting grooves (22) and the limiting grooves I (23) of the steel box girders (21) in the rear row, the connection between the steel box girders is completed, and after the sequential erection is completed, the first base (11) can be disassembled, and the erection is completed.