CN206328678U - Steel box-girder chooses arm and steel guard rail installs dual-purpose type Mobile operating platform - Google Patents
Steel box-girder chooses arm and steel guard rail installs dual-purpose type Mobile operating platform Download PDFInfo
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- CN206328678U CN206328678U CN201621407536.6U CN201621407536U CN206328678U CN 206328678 U CN206328678 U CN 206328678U CN 201621407536 U CN201621407536 U CN 201621407536U CN 206328678 U CN206328678 U CN 206328678U
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Abstract
The utility model is related to steel box-girder and chooses arm and steel guard rail installation dual-purpose type Mobile operating platform, including movable stand, contilever structure, operating platform, walking passageway on bridge, it is characterised in that：Two of contilever structure upper overarms are separately fixed under two of operating platform in overarm, cross bar two ends on bridge above movable stand be fixed on contilever structure two encorbelment on beam-ends, one vertical channel bottom of walking passageway is fixed on the operational platform, another vertical channel is hung on the tie-rod of contilever structure, and described operating platform is connected and hung over outside with movable stand on bridge by contilever structure and chooses on arm.The utility model can improve steel box-girder operating efficiency, shorten the duration, simultaneously because steel guard rail can be installed as early as possible, elimination chooses arm and faces the unshielded potential safety hazard in side, improves the safety coefficient of workmen's operation.Described 6 parts of utility model are bolted, and transport, safety and convenient disassembly are quick, reusable.
Description
Technical field
The utility model is related to municipal bridge steel box girder construction field, be one kind apply to steel box-girder choose arm and steel guard rail peace
Dress movable operation platform.
Background technology
It is fast-developing to adapt to urban economy, quality of the life is improved, traffic congestion problem, key city town road is cracked
Construction is just carried out in high gear, and steel box girder bridge is because its installation method is versatile and flexible, short construction period the advantages of, it is just wide
It is general to be applied to crossing, across the built complicated place of construction environment such as overhead.It is in main tank room that steel box-girder, which installs main method,
Under set up support jig, choose arm use without support installation method.And arm and the installation of steel guard rail thereon are chosen to integral installation progress
There is important influence with safety construction.At present, choose arm in municipal bridge steel box girder and steel guard rail installs standard practice master
If there is 2 kinds：(1) ground sets up scaffold and carries out choosing arm installation, and the weld job of steel guard rail, the method are carried out using small Hanging Basket
Scaffold needs to take ground space, larger to traffic impact, easily causes traffic congestion；(2) choose arm and steel guard rail is adopted respectively
Installed with Hanging Basket, because steel guard rail can influence to choose the movement of arm Hanging Basket, steel guard rail, which is installed, can just pacify after arm installation is chosen
Dress, influences steel guard rail installation progress, faces frontier defense shield while choosing arm end and can not set, there is larger potential safety hazard.
The content of the invention
The purpose of this utility model is used for steel box-girder to overcome above-mentioned prior art to provide the problem of existing there is provided one kind
Arm and steel guard rail installation movable operation platform are chosen, accelerates steel box girder construction progress, shorten the duration, while it is hidden to eliminate safety
Suffer from, improve workmen's safety coefficient, and can be moved freely along steel box-girder, installation and removal are convenient, fast, and can weigh
Use again.
The technical solution of the utility model is：
Steel box-girder chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, including movable stand, contilever structure, operation on bridge
Platform, walking passageway, it is characterised in that：The upper overarm of two of contilever structure is separately fixed under two of operating platform and hung oneself from a beam
On, be fixed on contilever structure two of the cross bar two ends on bridge above movable stand encorbelment on beam-ends, and one of walking passageway is vertical
Channel bottom is fixed on the operational platform, and another vertical channel is hung on the tie-rod of contilever structure, and described operating platform leads to
Cross contilever structure and be connected and hang over outside with movable stand on bridge and choose on arm.
The utility model also includes guardrail, and the vertical rod of guardrail is respectively welded on two Cantilever Beams of contilever structure.
The utility model also includes facade bridging, and facade bridging is fixed on two upper overarms of contilever structure and operated
Between being hung oneself from a beam under two of platform.
Described operating platform is by 2 Pin cantilever trusses, two lower hanging pillars, three pieces of removable lids, purlin, checkered steel plate, companies
Steel pipe composition is connect, is fixed on per Pin cantilever trusses on a lower hanging pillar, two lower hanging pillars are integrally fixed by joint steel pipe, 2
Checkered steel plate formation lower floor platform is laid on the lower boom upper berth purlin of Pin cantilever trusses, purlin, three pieces of removable lids are layered on 2 Pin
Upper platform is formed on the top boom of cantilever truss.
Movable stand is by two crossbeams, two cross bars, two vertical rods, two braces, support member, counterweights on described bridge
Case, four orientation pulleys compositions, two crossbeams, a cross bar and ballast box are fixed into a square frame, and support member is fixed on square frame
Centre, square frame tetrapod fixes an orientation pulley respectively, and two vertical rods are separately fixed on the cross bar of square frame, another
Cross bar two ends are fixed in two vertical rods, and every brace one end is fixed on another cross bar, and the other end is fixed on corresponding one
On root crossbeam.
Described contilever structure includes connection cross bar, two Cantilever Beams, two diagonal braces, two upper hanging pillar, tie-rods, and connection is horizontal
Bar, two Cantilever Beams, tie-rods are fixed into quadro frame, and the bottom at connection cross bar two ends is fixed on a upper hanging pillar, every respectively
Fixed between hanging pillar and corresponding Cantilever Beams with a diagonal brace.
Described contilever structure also includes two blocks of angle steel, and every piece of angle steel two ends are separately fixed at connection cross bar and corresponding outstanding
On outrigger.
Two hangers are respectively welded on two described Cantilever Beams.
Described walking passageway includes two vertical channels and a horizontal channel, and each vertical channel is welded by band steel and angle steel
Connect and form, horizontal channel is then welded by the primary-secondary beam upper berth checkered steel plate of channel-section steel.
Described guardrail is welded by pipe, vertical rod and cross bar, in every bottom of upright rod composition backing, is fixed with bolt
On the Cantilever Beams of contilever structure.
Arm is chosen to steel box-girder using the utility model and steel guard rail is installed and had in key operation：(1) arm bracket and master are chosen
Chamber butt weld；(2) installation of arc decorative plate；(3) the embedding section of mending of arm is chosen to install；(4) steel guard rail is with choosing arm falsework slippage；Steel is protected
Butt weld between column.
Operating platform of the present utility model is connected to hang over outside by contilever structure with movable stand on bridge to be chosen on arm, across steel
Guardrail, the installation of steel guard rail does not influence the movement of operating platform, steel guard rail and choose arm install can while install, can accelerate progress,
Shorten the duration；Steel guard rail can be as frontier defense shield be faced simultaneously, and original faces frontier defense and protects dismountable, to accelerate turnover.
Operating platform, the deadweight of contilever structure and operating personnel's operation load pass through four on movable stand on the bridge
Orientation pulley is delivered on steel box-girder.
The orientation pulley can ensure the utility model conveniently moving, while bearing the whole load of structure；Wherein structure
Gravity load mainly undertaken by two, the outside pulley for choosing arm end, the pressure that the pulley of inner side two is received is smaller, to ensure
Structure is not toppled danger under construction loads, is ensured operating personnel's safety, need to be placed counterweight in the ballast box of interior side roller,
The big I of counterweight is calculated according to the size and factor of safety against overturning of construction loads more than 2.
The utility model design concept is distinct, and mentality of designing is reasonable.On the basis of the traditional cradle construction technique of steel box-girder
On propose a kind of brand-new mobile movable operation platform construction technology.
Advantage of the present utility model：
1. make simple.Agent structure has the angle steel of different size as bar, chord member, diagonal web member, vertical web rod is linked, and leads to
Cross and be connected with the mode that gusset plate is mutually welded, simple structure, processing and fabricating is easy.
2. installing/dismounting is simple and convenient, it can be recycled.All parts in ground spliced and assembling, are once lifted
It can complete to install.The screen cloth of operating platform, scaffold tube, each section are reusable.
3. mobility is strong.Determine fixed pulley by four and may be implemented in choose move freely on arm, and can be by rationally setting
Multiple devices, can be achieved to choose arm and the flowing water of steel guard rail installation are continuously constructed, the break period is reduced to the full extent, is improved
Operating efficiency, shortens the duration.
4. eliminating safe hidden trouble, be conducive to safety construction.Using the device, relatively conventional cradle construction technique is chosen
Arm and steel guard rail, which are installed, to be independent of each other, and steel steel guard rail can be installed first, is eliminated and is chosen arm end because nothing faces the potential safety hazard that frontier defense shield triggers,
Workmen's safety on bridge is ensured, while eliminating the danger that possible falling object is caused to pedestrian under bridge and driving.
5. shorten the turn around time for facing frontier defense shield.After steel guard rail is installed, steel box-girder main tank room side faces frontier defense and protects dismountable,
Accelerate turnover, economize on resources.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is operating platform schematic diagram of the present utility model.
Fig. 3 is movable stand schematic diagram on bridge of the present utility model.
Fig. 4 is contilever structure schematic diagram of the present utility model.
Fig. 5 facade bridging schematic diagrames of the present utility model.
Fig. 6 is walking passageway schematic diagram of the present utility model.
Fig. 7 is guardrail schematic diagram of the present utility model.
Embodiment
The utility model patent is described further with instantiation below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model is logical including movable stand 200, contilever structure 300, operating platform 100, walking on bridge
Road 400, guardrail 500, facade bridging 600, it is characterised in that：The upper overarm 13 of two of contilever structure 300 is separately fixed at behaviour
Make under two of platform 100 in overarm 4, the two ends of cross bar 11 on bridge above movable stand 200 are fixed on two of contilever structure 300
On the end of Cantilever Beams 13, a bottom of vertical channel 21 of walking passageway 400 is fixed on operating platform 100, another vertical channel
19 hang on the tie-rod 18 of contilever structure 300, and described operating platform 100 passes through movable stand 200 on contilever structure 300 and bridge
It is connected and hangs over outside and chooses on arm；The vertical rod of guardrail 500 is respectively welded on two Cantilever Beams 13 of contilever structure 300；Facade
Bridging 600 is fixed under two upper overarms 15 of contilever structure 300 and two of operating platform 100 between overarm 4.
As shown in Fig. 2 described described operating platform 100 is by 2 Pin cantilever trusses, two lower hanging pillars 4, three pieces of removable covers
Son, purlin, checkered steel plate, joint steel pipe composition, are fixed on a lower hanging pillar 4, two lower hanging pillars 4 pass through per Pin cantilever trusses
Joint steel pipe is integrally fixed, the lower boom upper berth purlin of 2 Pin cantilever trusses 3, and checkered steel plate formation lower floor is laid on purlin and is put down
Platform 2, three pieces of removable lids are layered on formation upper platform 1 on the top boom of 2 Pin cantilever trusses 3.5.3 meters of operating platform length, a width of 2
Rice, highly be 1.3~1.75 meters.Operating platform point upper platform 1 and lower floor's platform 2, upper platform 1 is by 3 pieces of removable cover subgroups
Into upper platform 1 only needs when that need to carry out steel guard rail butt welding operation, and when in lower floor's 2 operation of platform, removable lid should take
Fall；The main lower boom upper berth purlin in Pin cantilever trusses 3 of lower floor's platform 2, and checkered steel plate is laid on purlin, to facilitate people
Member's operation, and prevent that welding spark from splashing down.Whole operation platform load is mainly undertaken by 2 Pin cantilever trusses 3, the chord member of truss 3.
Section is H150 × 75 × 5 × 7, and web member section is the angular pole of L50 × 5, the thick node plate welds of the use 6mm of chord member and web member.Behaviour
Make platform and use 10.8 with hanging pillar 15 on the contilever structure 300 by section specification for the lower hanging pillar 4 of H200 × 100 × 5.5 × 8
The senior bolt connection of level is formed, and after the completion of being connected with contilever structure 300, the facade bridging 600 is installed, and increases facade
In-plane stiffness.
As shown in figure 3, on described bridge movable stand 200 by two crossbeams 5, two cross bars 11, two vertical rods 6, two tiltedly
Pull bar 7, support member 8, ballast box 9, four orientation pulleys 10 are constituted, and two crossbeams 5, a cross bar 11 and ballast box 9 are fixed into one
Square frame, support member 8 is fixed in the middle of square frame, and square frame tetrapod fixes an orientation pulley 10, two vertical rods 6 respectively
It is separately fixed on the cross bar 11 of square frame, another cross bar two ends 11 are fixed in two vertical rods 6, every one end of brace 7 is consolidated
It is scheduled on another cross bar 11, the other end is fixed on a corresponding crossbeam 5.Wherein one crossbeam 5 (H150 × 75 × 5 × 7),
Piece vertical rod 6 (H150 × 75 × 5 × 7), the stable stress system of brace 7 (L70 × 5) composition plane trigonometry, two Pin tri-
Architectonical is linked with two cross bars 11 between the stress system of angle, while being the globality of reinforcement structure, is set between crossbeam 5 by angle steel
The support member 8 that L75 × 5 are constituted, overall structure constitutes a stable space-load system.Meanwhile, to ensure the present apparatus in people
Do not toppled during member's operation, it is necessary to plus counterweight balance tilting moment, counterweight is placed in ballast box 9.Pulley 10 is oriented to protect
Card safety, its design bearing capacity should be not less than 2 times of counter-force under its design load, while the present apparatus is promoted for convenience of personnel, it is sliding
The diameter of wheel is not preferably less than 12 cun.
As shown in figure 4, described contilever structure include connection cross bar 12, two Cantilever Beams 13, two diagonal braces 14, on two
Hanging pillar 15, tie-rod 18, two blocks of angle steel 16, connection cross bar 12, two Cantilever Beams 13, tie-rods 18 are fixed into quadro frame, and connection is horizontal
A upper hanging pillar 15 is fixed in the bottom at the two ends of bar 12 respectively, and every above with a diagonal brace between hanging pillar 15 and corresponding Cantilever Beams 13
14 are fixed, and every piece of two ends of angle steel 16 are separately fixed on connection cross bar 12 and corresponding Cantilever Beams 13, are encorbelmented at described two
Two hangers 17 are respectively welded on beam 13.Wherein one Cantilever Beams 13 (H200 × 150 × 5.5 × 8), a upper hanging pillar 15
(H150 × 75 × 5 × 7), a stable stress system of diagonal brace 14 (H200 × 150 × 5.5 × 8) composition plane trigonometry, two Pin tri-
Angle stress system is connected with connection cross bar 12 (H150 × 75 × 5 × 7) and tie-rod 18 (L70 × 5), while being used in upper surface
The angle steel 16 of L50 × 5 increase upper surface in-plane stiffness.4 hangers 17, convenient lifting are set on contilever structure.On contilever structure and bridge
Movable stand is using 10.8 grades of high-strength bolt connections.
Fig. 5 show the schematic diagram of facade bridging 600 of the present utility model, and facade bridging 600 mainly uses L70 × 5
Angle steel, facade bridging 600 be fixed under two of two of contilever structure 300 upper overarms 15 and operating platform 100 overarm 4 it
Between.
As shown in fig. 6, described walking passageway 400 includes two vertical channels (19,21) and a horizontal channel 20, each
Vertical channel is welded by band steel and angle steel, and horizontal channel 21 is then welded by the primary-secondary beam upper berth checkered steel plate of channel-section steel.
Vertical channel (19,21) is mainly welded by band steel 60 × 8 and angle steel L30 × 3, and a vertical channel 21 is directly welded at described
On bridge on movable stand, another vertical channel 19 is hung on the tie-rod 18 of the contilever structure.Horizontal channel 20 is then by channel-section steel
Primary-secondary beam upper berth checkered steel plate be welded, width is 0.6m, and horizontal channel 20 is directly placed at this practicality by limited block
New top.
As shown in fig. 7, described guardrail is made up of the vertical rods of pipe φ 48 × 3 and cross bar, in bottom of upright rod composition backing, use
C grade bolts M10 is fixed at the top of the present apparatus on Cantilever Beams.
The utility model operation instruction：
1. according to practice of construction needs, determining overall structure size, structural stress analysis is carried out so that size meets construction
Demand, stress and overall stability against overturning are met.
2. carrying out making in factory according to design drawing, and anti-corrosive primer and yellow lacquer painting are applied, outgoing need to meet regulation will
Ask.
3. the present apparatus is in use, it is necessary to the peace made in the device back side and the setting of operating platform both sides of sheet iron
Full civilized construction CI marks.The present apparatus should first be filled with enough counterweights before use, and be made after constituting examination, acceptance(check)
Industry, operating personnel must not exceed 2 people.
4. present apparatus scene spelling is sequentially：Movable stand → guardrail on operating platform → contilever structure → facade support → bridge →
After the completion of walking passageway, live spelling, lifted using 25t truck cranes to bridge floor.
5. due to steel guard rail installation, the present apparatus can not be directly hung to behind ground using truck crane and be dismantled again, therefore
Need first first to hang the present apparatus with truck crane, after movable stand is first unloaded on bridge, then be hung to ground and disassemble.Specific demounting procedure
For：(1) walking passageway and guardrail are first removed；(2) outer side roller is made to be in the state that do not stress with the 25t truck crane davit present apparatus,
Ensure that pulley is not hanging simultaneously；(3) connecting bolt between movable stand on semi-girder truss and bridge is laid down, movable stand on bridge is removed；(4)
Movable stand on contilever structure, operating platform, the structure of facade support composition and bridge is hung to ground successively；(5) dismantle successively vertical
Face support, contilever structure.
Claims (10)
1. steel box-girder chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, including movable stand, contilever structure, operation are flat on bridge
Platform, walking passageway, it is characterised in that：Two of contilever structure upper overarms are separately fixed under two of operating platform in overarm,
Cross bar two ends on bridge above movable stand be fixed on contilever structure two encorbelment on beam-ends, a vertical channel of walking passageway
Bottom is fixed on the operational platform, and another vertical channel is hung on the tie-rod of contilever structure, and described operating platform is by stretching
Arm configuration, which is connected and hung over outside with movable stand on bridge, to be chosen on arm.
2. steel box-girder as claimed in claim 1 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, it is characterised in that：Also
Including guardrail, the vertical rod of guardrail is respectively welded on two Cantilever Beams of contilever structure.
3. steel box-girder as claimed in claim 1 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, it is characterised in that：Also
Including facade bridging, facade bridging is fixed under two upper overarms of contilever structure and two of operating platform and hangs oneself from a beam it
Between.
4. the steel box-girder as described in one of claim 1-3 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, its feature
It is：Described operating platform is by 2 Pin cantilever trusses, two lower hanging pillars, three blocks of removable lids, purlin, checkered steel plate, connection steel
Pipe is constituted, and is fixed on per Pin cantilever trusses on a lower hanging pillar, two lower hanging pillars are integrally fixed by joint steel pipe, and 2 Pin hang
Checkered steel plate formation lower floor platform is laid on the lower boom upper berth purlin of arm truss, purlin, three pieces of removable lids are layered on 2 Pin cantilevers
Upper platform is formed on the top boom of truss.
5. the steel box-girder as described in one of claim 1-3 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, its feature
It is：Movable stand is by two crossbeams, two cross bars, two vertical rods, two braces, support member, ballast box, four on described bridge
Individual orientation pulley composition, two crossbeams, a cross bar and ballast box are fixed into a square frame, and support member is fixed in the middle of square frame,
Square frame tetrapod fixes an orientation pulley respectively, and two vertical rods are separately fixed on the cross bar of square frame, another cross bar
Two ends are fixed in two vertical rods, and every brace one end is fixed on another cross bar, and the other end is fixed on a corresponding horizontal stroke
Liang Shang.
6. the steel box-girder as described in one of claim 1-3 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, its feature
It is：Described contilever structure includes connection cross bar, two Cantilever Beams, two diagonal braces, two upper hanging pillar, tie-rods, connection cross bar,
Two Cantilever Beams, tie-rods are fixed into quadro frame, and a upper hanging pillar, every upper hanging pillar are fixed in the bottom at connection cross bar two ends respectively
Fixed between corresponding Cantilever Beams with a diagonal brace.
7. steel box-girder as claimed in claim 6 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, it is characterised in that：Institute
The contilever structure stated also includes two blocks of angle steel, and every piece of angle steel two ends are separately fixed on connection cross bar and corresponding Cantilever Beams.
8. steel box-girder as claimed in claim 6 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, it is characterised in that：
Two hangers are respectively welded on two described Cantilever Beams.
9. the steel box-girder as described in one of claim 1-3 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, its feature
It is：Described walking passageway includes two vertical channels and a horizontal channel, and each vertical channel is welded by band steel and angle steel
Form, horizontal channel is then welded by the primary-secondary beam upper berth checkered steel plate of channel-section steel.
10. steel box-girder as claimed in claim 2 chooses arm and steel guard rail installs dual-purpose type Mobile operating platform, it is characterised in that：
Described guardrail is welded by pipe, vertical rod and cross bar, in every bottom of upright rod composition backing, is fixed by bolts to semi-girder knot
On the Cantilever Beams of structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621407536.6U CN206328678U (en) | 2016-12-21 | 2016-12-21 | Steel box-girder chooses arm and steel guard rail installs dual-purpose type Mobile operating platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621407536.6U CN206328678U (en) | 2016-12-21 | 2016-12-21 | Steel box-girder chooses arm and steel guard rail installs dual-purpose type Mobile operating platform |
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| Publication Number | Publication Date |
|---|---|
| CN206328678U true CN206328678U (en) | 2017-07-14 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107298392A (en) * | 2017-08-25 | 2017-10-27 | 黄河科技学院 | Urban viaduct construction in later period is combined the unit with multi-functional lifting and hanging basket |
| CN109083008A (en) * | 2018-06-09 | 2018-12-25 | 中交航局第工程有限公司 | A kind of walking Coping Construction job platform and its packaging technology |
| CN109577199A (en) * | 2018-11-07 | 2019-04-05 | 同济大学 | A kind of bridge lateral prestressed stretch-draw rack |
| CN109812003A (en) * | 2019-01-23 | 2019-05-28 | 中国五冶集团有限公司 | A kind of annular hanging basket device of box arch section welding installation |
| CN111665065A (en) * | 2020-04-26 | 2020-09-15 | 武汉船用机械有限责任公司 | Test platform of power device |
| CN113309008A (en) * | 2021-07-05 | 2021-08-27 | 中建八局第四建设有限公司 | Steel case roof beam temporary support construction safety work platform |
| CN113931073A (en) * | 2021-11-02 | 2022-01-14 | 安徽省公路桥梁工程有限公司 | Asymmetric ultra-wide cable-stayed bridge steel box girder large cantilever flange construction method |
| CN114105001A (en) * | 2021-11-16 | 2022-03-01 | 中建三局集团有限公司 | Assembled tower crane body overhanging platform and mounting method thereof |
| CN114734181A (en) * | 2022-04-20 | 2022-07-12 | 湖北辉创重型工程有限公司 | Welding trolley for cantilever arm of steel box girder |
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2016
- 2016-12-21 CN CN201621407536.6U patent/CN206328678U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107298392A (en) * | 2017-08-25 | 2017-10-27 | 黄河科技学院 | Urban viaduct construction in later period is combined the unit with multi-functional lifting and hanging basket |
| CN107298392B (en) * | 2017-08-25 | 2019-09-13 | 黄河科技学院 | Urban viaduct construction in later period is combined the unit with multi-functional lifting and hanging basket |
| CN109083008A (en) * | 2018-06-09 | 2018-12-25 | 中交航局第工程有限公司 | A kind of walking Coping Construction job platform and its packaging technology |
| CN109577199A (en) * | 2018-11-07 | 2019-04-05 | 同济大学 | A kind of bridge lateral prestressed stretch-draw rack |
| CN109812003A (en) * | 2019-01-23 | 2019-05-28 | 中国五冶集团有限公司 | A kind of annular hanging basket device of box arch section welding installation |
| CN111665065A (en) * | 2020-04-26 | 2020-09-15 | 武汉船用机械有限责任公司 | Test platform of power device |
| CN113309008A (en) * | 2021-07-05 | 2021-08-27 | 中建八局第四建设有限公司 | Steel case roof beam temporary support construction safety work platform |
| CN113931073A (en) * | 2021-11-02 | 2022-01-14 | 安徽省公路桥梁工程有限公司 | Asymmetric ultra-wide cable-stayed bridge steel box girder large cantilever flange construction method |
| CN114105001A (en) * | 2021-11-16 | 2022-03-01 | 中建三局集团有限公司 | Assembled tower crane body overhanging platform and mounting method thereof |
| CN114105001B (en) * | 2021-11-16 | 2023-07-18 | 中建三局集团有限公司 | Tower body overhanging platform of assembled tower crane and mounting method thereof |
| CN114734181A (en) * | 2022-04-20 | 2022-07-12 | 湖北辉创重型工程有限公司 | Welding trolley for cantilever arm of steel box girder |
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