CN108857290A - A kind of production method of Bridge Erector nose girder - Google Patents
A kind of production method of Bridge Erector nose girder Download PDFInfo
- Publication number
- CN108857290A CN108857290A CN201810965364.1A CN201810965364A CN108857290A CN 108857290 A CN108857290 A CN 108857290A CN 201810965364 A CN201810965364 A CN 201810965364A CN 108857290 A CN108857290 A CN 108857290A
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- China
- Prior art keywords
- plate
- positioning seat
- nose girder
- sides
- connecting plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
A kind of production method of Bridge Erector nose girder, belongs to Bridge Erector nose girder manufacturing technology field.The present invention, which is used, welds side plate in the two sides of H profile steel, form the square tube of both ends open, and the design of connecting plate is fixed in one end of square tube, when needing to be spliced multiple nose girders, two neighboring nose girder need to only be joined end to end, and be fixedly connected by pin, which is convenient for the installation and removal of nose girder, improves construction efficiency.The present invention utilizes group body tooling, top boom is fixed on a group middle part for body tooling, two lower booms are individually fixed in a group two sides for body tooling bottom, top boom and two lower booms combine to form truss structure, upper gusset plate is welded in the bottom of top boom, lower node plate is welded at the top of lower boom, welds web member between two neighboring upper gusset plate and lower node plate, the consistency for improving nose girder makes nose girder center line zero deflection.
Description
Technical field
The invention belongs to Bridge Erector nose girder manufacturing technology fields, are specifically related to a kind of production method of Bridge Erector nose girder.
Background technique
With the needs of China's economy suggestion, the rapid development of China Expressway, bridge construction is also more and more, highway
Bridge Erector has become indispensable in bridge on highway construction key set as the large special equipment in construction
It is standby.During bridge erection, carry out girder truss pushing tow or it is dilatory when, auxiliary installation is often carried out using nose girder.
Existing nose girder especially plate girder itself from great, construction assembly and disassembly are inconvenient, and construction efficiency is low, the installation and removal time of nose girder
Between influenced the progress speed of engineering.
Summary of the invention
The present invention mainly solves technical problem present in the above-mentioned prior art, provides a kind of production of Bridge Erector nose girder
Method.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals：A kind of Bridge Erector nose girder
Production method, the method are：
Step (1) chooses connecting plate, H profile steel and the side plate to match with H profile steel length, to connecting plate, H profile steel and
Side plate is pre-processed, and must not there be corrosion and scar in the surface of connecting plate, H profile steel and side plate, and inside must not have slag inclusion, layer
Skin defect, and straightening, impeller blasting, processing of priming are carried out to it；
Side plate is respectively placed in the two sides of H profile steel, and is fixedly connected by welding with H profile steel, shape after welding by step (2)
At the square tube of both ends open, welding slag, the polishing crator at square tubes soldering are removed, and detect the quality of weld seam；
Connecting plate and square tube are sequentially placed into numerical control machining center, according to drawing requirement, respectively in connecting plate by step (3)
Surface and the two sides of square tube open up pin hole, then the residue in pin hole is purged, one end of connecting plate is inserted into
Square tube, and be fixedly connected by pin with square tube, form chord member；
Step (4) chooses three strings bar, wherein one is used as top boom, remaining two are used as lower boom, utilizes a group body work
Dress, is fixed on a group middle part for body tooling for top boom, two lower booms are individually fixed in a group two sides for body tooling bottom, top boom
It combines to form truss structure with two lower booms, cross section is isosceles triangle；
Step (5) welds upper gusset plate in the bottom of top boom, welds lower node plate, upper node at the top of lower boom
Plate and lower node plate interval setting, weld web member between two neighboring upper gusset plate and lower node plate, two lower booms it
Between also weld web member, obtain nose girder after the completion of welding, self-test then carried out to nose girder, is specially examined after stamping steel seal.
Preferably, pin is using cylindrical blank 40Cr, and blank is after lathe grinding is processed in the step (3)
Modifier treatment is carried out, then the blank of modifier treatment is placed in carburizer and carries out carburizing twice, after the completion of carburizing, uses grinding machine
Carry out polishing processing.
Preferably, in the step (4), group body tooling include left positioning seat, right positioning seat, support platform, crossbeam and
Controller, the left positioning seat are slidably connected to the left side of support platform, and it is sliding that the left positioning seat is connected with the left positioning seat of driving
Dynamic driving mechanism, the right positioning seat are fixedly connected on the right side of support platform, and the support platform is equipped with support rod, institute
The top that crossbeam is set to left positioning seat and right positioning seat is stated, trolley is slidably connected on the crossbeam, the lifting is small
Vehicle is connected with suspender, and the middle part of the left positioning seat inner sidewall is equipped with the first fixed plate, and first fixed plate is equipped with array
Multiple first through hole of arrangement, the two sides of the bottom of the left positioning seat inner sidewall are equipped with the second fixed plate, and described second is fixed
It is set on plate there are two first through hole, the first through hole matches with pin hole, and the middle part of the right positioning seat inner sidewall is equipped with
First grip slipper, the two sides of first grip slipper are equipped with multiple second through-holes of array arrangement, the right positioning seat inside
The two sides of the bottom of wall are equipped with the second grip slipper, and the structure of second grip slipper and the first grip slipper is consistent, second folder
The two sides for holding seat are all provided with there are two the second through-hole, and second through-hole matches with pin hole, and the controller, which is electrically connected, to be driven
Motivation structure and trolley.
Organizing the method that body tooling fixes chord member is：(1), two lower booms pass through trolley and are hung in support platform,
One end that lower boom is equipped with connecting plate faces left positioning seat, and one end far from connecting plate faces right positioning seat, and lower boom is remote
The second grip slipper is inserted into one end from connecting plate, and is fixedly connected by pin and the second grip slipper；(2), top boom is passed through
Trolley is hung to the top of support platform, and one end that top boom is equipped with connecting plate faces left positioning seat, far from connecting plate
One end faces right positioning seat, top boom is inserted into the first grip slipper far from one end of connecting plate, and pass through pin and the first clamping
Seat is fixedly connected；(3), controller control driving mechanism opens work, and left positioning seat is made to move right, to drive first to fix
Plate and the second fixed plate move right, when the first fixed plate, the second fixed plate are moved at connecting plate, the first fixed plate and
Two fixed plates are clamped connecting plate respectively, and are fixedly connected by pin with connecting plate.
The device have the advantages that：In the present invention, side plate is welded by using in the two sides of H profile steel, forms both ends
The square tube of opening, and be fixed with the design of connecting plate in one end of square tube, when needing to be spliced multiple nose girders, only need by
Two neighboring nose girder joins end to end, and is fixedly connected by pin, which is convenient for the installation and removal of nose girder, mentions
High construction efficiency；In the present invention, by carrying out the welding of web member using group body tooling, the consistency of nose girder is improved, makes to lead
Beam center line zero deflection, by welding at the both ends of web member with upper gusset plate and lower node plate respectively, on the one hand convenient for welding behaviour
Make, improve welding quality, on the other hand improve the welded seal of web member, hinders water and air to enter weld seam, accomplish to prevent
It becomes rusty anticorrosive；In the present invention, by using the pin after modifier treatment, Carburization Treatment, pin has very high toughness and intensity,
The bonding strength that ensure that nose girder, improves production security.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of chord member produced by the invention；
Fig. 2 is a kind of structural schematic diagram of present invention group body tooling；
Fig. 3 is a kind of usage state diagram of present invention group body tooling；
Fig. 4 is the enlarged diagram in the portion A in Fig. 3；
Fig. 5 is a kind of attachment structure schematic diagram of the first fixed plate and connecting plate of the invention；
Fig. 6 is a kind of attachment structure schematic diagram of top boom of the present invention and the first grip slipper.
In figure：1, connecting plate；2, H profile steel；3, side plate；4, pin hole；5, pin；6, top boom；7, lower boom；8, upper section
Contact plate；9, lower node plate；10, web member；11, left positioning seat；12, right positioning seat；13, support platform；14, crossbeam；15, it controls
Device；16, support rod；17, trolley；18, suspender；19, the first fixed plate；20, first through hole；21, the second fixed plate；22,
First grip slipper；23, the second through-hole；24, the second grip slipper.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：A kind of production method of Bridge Erector nose girder, as shown in figs 1 to 6, the method is：Step (1) is chosen
Connecting plate, H profile steel and the side plate to match with H profile steel length, pre-process connecting plate, H profile steel and side plate, connection
Must not there be corrosion and scar in the surface of plate, H profile steel and side plate, and inside must not have slag inclusion, layer skin defect, and become to it
Shape correction, impeller blasting, processing of priming；Side plate is respectively placed in the two sides of H profile steel, and passes through welding and H-type by step (2)
Steel is fixedly connected, and the square tube of both ends open is formed after welding, removes welding slag, polishing crator at square tubes soldering, and detect weld seam
Quality；Connecting plate and square tube are sequentially placed into numerical control machining center, according to drawing requirement, respectively in connecting plate by step (3)
Surface and the two sides of square tube open up pin hole, are then purged to the residue in pin hole, by one end insertion side of connecting plate
Pipe, and be fixedly connected by pin with square tube, form chord member；Step (4) chooses three strings bar, wherein one is used as top boom,
Remaining two are used as lower boom, using a group body tooling, top boom are fixed on a group middle part for body tooling, two lower booms are solid respectively
Due to a group two sides for body tooling bottom, top boom and two lower booms combine to form truss structure, and cross section is isoceles triangle
Shape；Step (5), welds upper gusset plate in the bottom of top boom, welds lower node plate at the top of lower boom, upper gusset plate is under
The setting of gusset plate interval, welds web member between two neighboring upper gusset plate and lower node plate, also welds between two lower booms
Web member is connect, obtains nose girder after the completion of welding, self-test then is carried out to nose girder, is specially examined after stamping steel seal.
In the step (3), pin carries out quenched place using cylindrical blank 40Cr, blank after lathe grinding is processed
The blank of modifier treatment, is then placed in carburizer and carries out carburizing twice, after the completion of carburizing, carried out at polishing with grinding machine by reason
Reason.
In the step (4), group body tooling includes left positioning seat, right positioning seat, support platform, crossbeam and controller, institute
The left side that left positioning seat is slidably connected to support platform is stated, the left positioning seat is connected with the driving machine for driving left positioning seat sliding
Structure, the right positioning seat are fixedly connected on the right side of support platform, and the support platform is equipped with support rod, the crossbeam setting
In slidably connecting trolley on the top of left positioning seat and right positioning seat, the crossbeam, the trolley, which is connected with, to be hung
Tool, the middle part of the left positioning seat inner sidewall are equipped with the first fixed plate, and first fixed plate is equipped with the multiple of array arrangement
First through hole, the two sides of the bottom of the left positioning seat inner sidewall are equipped with the second fixed plate, and second fixed plate is equipped with two
A first through hole, the first through hole match with pin hole, and the middle part of the right positioning seat inner sidewall is equipped with the first grip slipper,
The two sides of first grip slipper are equipped with multiple second through-holes of array arrangement, the two sides of the bottom of the right positioning seat inner sidewall
It is equipped with the second grip slipper, the structure of second grip slipper and the first grip slipper is consistent, and the two sides of second grip slipper are equal
If second through-hole matches with pin hole there are two the second through-hole, the controller is electrically connected driving mechanism and lifting
Trolley.
In the present invention, side plate is welded by using in the two sides of H profile steel, forms the square tube of both ends open, and in square tube
One end is fixed with the design of connecting plate, and when needing to be spliced multiple nose girders, only two neighboring nose girder need to join end to end,
And be fixedly connected by pin, which is convenient for the installation and removal of nose girder, improves construction efficiency；The present invention
In, by carrying out the welding of web member using group body tooling, the consistency of nose girder is improved, makes nose girder center line zero deflection, passes through
The both ends of web member are welded with upper gusset plate and lower node plate respectively, on the one hand convenient for welding operation, improve welding quality, separately
On the one hand the welded seal of web member is improved, hinders water and air to enter weld seam, accomplishes Antirust corrosion-resistant；In the present invention, lead to
It crosses using the pin after modifier treatment, Carburization Treatment, pin has very high toughness and intensity, ensure that the connection of nose girder is strong
Degree, improves production security.
Finally it is pointed out that above embodiments are only the more representational examples of the present invention.It is clear that the invention is not restricted to
Above-described embodiment, acceptable there are many deformations.Any letter to the above embodiments according to the technical essence of the invention
Single modification, equivalent variations and modification, are considered as belonging to the scope of protection of the present invention.
Claims (3)
1. a kind of production method of Bridge Erector nose girder, it is characterised in that the method is：
Step (1) chooses connecting plate, H profile steel and the side plate to match with H profile steel length, to connecting plate, H profile steel and side plate
It is pre-processed, must not there be corrosion and scar in the surface of connecting plate, H profile steel and side plate, and inside must not have slag inclusion, layer skin lacks
It falls into, and carries out straightening, impeller blasting, processing of priming to it；
Side plate is respectively placed in the two sides of H profile steel, and is fixedly connected by welding with H profile steel by step (2), and two are formed after welding
The square tube of end opening removes welding slag, polishing crator at square tubes soldering, and detects the quality of weld seam；
Connecting plate and square tube are sequentially placed into numerical control machining center, according to drawing requirement, respectively in the table of connecting plate by step (3)
Face and the two sides of square tube open up pin hole, are then purged to the residue in pin hole, and square tube is inserted into one end of connecting plate,
And be fixedly connected by pin with square tube, form chord member；
Step (4) chooses three strings bar, wherein one is used as top boom, remaining two are used as lower boom, using a group body tooling,
Top boom is fixed on a group middle part for body tooling, two lower booms are individually fixed in a group two sides for body tooling bottom, top boom and
Two lower booms combine to form truss structure, and cross section is isosceles triangle；
Step (5) welds upper gusset plate in the bottom of top boom, welds lower node plate at the top of lower boom, upper gusset plate and
The setting of lower node plate interval, welds web member between two neighboring upper gusset plate and lower node plate, between two lower booms
Web member is welded, obtains nose girder after the completion of welding, self-test then is carried out to nose girder, is specially examined after stamping steel seal.
2. a kind of production method of Bridge Erector nose girder according to claim 1, it is characterised in that in the step (3), pin
Using cylindrical blank 40Cr, blank carries out modifier treatment after lathe grinding is processed, then by the blank of modifier treatment
It is placed in carburizer and carries out carburizing twice, after the completion of carburizing, carry out polishing processing with grinding machine.
3. a kind of production method of Bridge Erector nose girder according to claim 1, it is characterised in that in the step (4), organize body
Tooling includes left positioning seat, right positioning seat, support platform, crossbeam and controller, and it is flat that the left positioning seat is slidably connected to support
The left side of platform, the left positioning seat are connected with the driving mechanism for driving left positioning seat sliding, and the right positioning seat is fixedly connected on
The right side of support platform, the support platform are equipped with support rod, and the crossbeam is set to the upper of left positioning seat and right positioning seat
Side, slidably connects trolley on the crossbeam, and the trolley is connected with suspender, in the left positioning seat inner sidewall
Portion is equipped with the first fixed plate, and first fixed plate is equipped with multiple first through hole of array arrangement, the left positioning seat inside
The two sides of the bottom of wall are equipped with the second fixed plate, are set in second fixed plate there are two first through hole, the first through hole with
Pin hole matches, and the middle part of the right positioning seat inner sidewall is equipped with the first grip slipper, and the two sides of first grip slipper are all provided with
Multiple second through-holes for having array to arrange, the two sides of the bottom of the right positioning seat inner sidewall are equipped with the second grip slipper, and described the
The structure of two grip slippers and the first grip slipper is consistent, and the two sides of second grip slipper are all provided with there are two the second through-hole, and described the
Two through-holes match with pin hole, and the controller is electrically connected driving mechanism and trolley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965364.1A CN108857290B (en) | 2018-08-23 | 2018-08-23 | Production method of bridge girder erection machine guide beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965364.1A CN108857290B (en) | 2018-08-23 | 2018-08-23 | Production method of bridge girder erection machine guide beam |
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| Publication Number | Publication Date |
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| CN108857290A true CN108857290A (en) | 2018-11-23 |
| CN108857290B CN108857290B (en) | 2020-06-19 |
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| CN201810965364.1A Active CN108857290B (en) | 2018-08-23 | 2018-08-23 | Production method of bridge girder erection machine guide beam |
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| SU750007A1 (en) * | 1978-06-29 | 1980-07-23 | Ордена Трудового Красного Знамени Центральный Научно-Исследовательский И Проектный Институт Строительных Металлоконструкций Цниипроектстальконструкция" | Foldable three-dimensional lattice structure |
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| CN201913611U (en) * | 2011-04-08 | 2011-08-03 | 重庆建工工业有限公司 | Lifting beam chord assembling tool |
| CN102581536A (en) * | 2012-03-08 | 2012-07-18 | 中联重科股份有限公司 | Single boom section molding tool for crane booms and single boom section production technology |
| CN103103929A (en) * | 2013-02-17 | 2013-05-15 | 中铁大桥局集团第八工程有限公司 | Multifunctional movable protective underframe for steel beam cantilever erection |
| CN203726044U (en) * | 2014-01-13 | 2014-07-23 | 浙江虎霸建设机械有限公司 | Splicing and welding tool for cargo boom of tower crane |
| CN107217857A (en) * | 2017-06-08 | 2017-09-29 | 浙江东南网架股份有限公司 | A kind of welded H section steel composite roof truss assembling method |
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2018
- 2018-08-23 CN CN201810965364.1A patent/CN108857290B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU750007A1 (en) * | 1978-06-29 | 1980-07-23 | Ордена Трудового Красного Знамени Центральный Научно-Исследовательский И Проектный Институт Строительных Металлоконструкций Цниипроектстальконструкция" | Foldable three-dimensional lattice structure |
| CN101446069A (en) * | 2008-12-30 | 2009-06-03 | 中铁大桥局集团第五工程有限公司 | Multi-node integral installation method for steel truss beam |
| CN201913611U (en) * | 2011-04-08 | 2011-08-03 | 重庆建工工业有限公司 | Lifting beam chord assembling tool |
| CN102581536A (en) * | 2012-03-08 | 2012-07-18 | 中联重科股份有限公司 | Single boom section molding tool for crane booms and single boom section production technology |
| CN103103929A (en) * | 2013-02-17 | 2013-05-15 | 中铁大桥局集团第八工程有限公司 | Multifunctional movable protective underframe for steel beam cantilever erection |
| CN203726044U (en) * | 2014-01-13 | 2014-07-23 | 浙江虎霸建设机械有限公司 | Splicing and welding tool for cargo boom of tower crane |
| CN107217857A (en) * | 2017-06-08 | 2017-09-29 | 浙江东南网架股份有限公司 | A kind of welded H section steel composite roof truss assembling method |
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| CN108857290B (en) | 2020-06-19 |
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