CN105369741B - Suspension-type movable operation platform for constructing catwalk face net - Google Patents
Suspension-type movable operation platform for constructing catwalk face net Download PDFInfo
- Publication number
- CN105369741B CN105369741B CN201510927773.9A CN201510927773A CN105369741B CN 105369741 B CN105369741 B CN 105369741B CN 201510927773 A CN201510927773 A CN 201510927773A CN 105369741 B CN105369741 B CN 105369741B
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- CN
- China
- Prior art keywords
- suspension
- cat road
- platform
- catwalk
- operation platform
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
Abstract
The invention provides a suspension-type movable operation platform for constructing a catwalk face net, and belongs to the field of catwalk face net construction devices. The suspension-type movable operation platform comprises a work platform. A platform beam is arranged on the work platform. The work platform is movably connected with a catwalk load bearing cable through suspension bracket suspending rods, the suspension bracket suspending rods and a catwalk shifting frame are locked through a locking device, and the suspension bracket suspending rods are connected with catwalk manropes. According to the suspension-type movable operation platform for constructing the catwalk face net, catwalk system components such as the catwalk load bearing cable, the catwalk shifting frame and the catwalk manropes are combined, a traditional cumbersome large-system aerial Bailey-type construction operation platform is broken through, designing and embedding of a large number of embedded parts are avoided, and larger space is reserved for construction of other structures. Due to the catwalk-shifting-frame integrating design, the suspension-type movable operation platform has the advantages that integrality is good, the functions are complete, the structure is light, assembling and disassembling are convenient, efficiency is high, and cost saving is facilitated.
Description
Technical field
The present invention relates to cat road veil constructing device field, can in particular to a kind of construction of suspension type cat road veil
Mobile operating platform.
Background technology
At present, suspension bridge cat road track cable displacement rigid frame, the construction operation platform of pull device are set up using beret truss
Construction operation platform, it is relatively complicated using construction operation platform construction, arrange that built-in fitting quantity is more, supporting construction is multiple
Miscellaneous, system is huge more heavy, dismounting complexity etc..
The content of the invention
The movable operation platform the invention provides a kind of suspension type cat road veil is constructed, it is intended to improve the problems referred to above.
What the present invention was realized in：
A kind of suspension type cat road veil construction movable operation platform, constructs for cat road wire side, including job platform, institute
State job platform and be provided with platform beams, the job platform is flexibly connected by suspension bracket suspension rod with cat road track cable, institute
State suspension bracket suspension rod and frame locking is conjugated by locking device and cat road, the suspension bracket suspension rod is connected with cat road manrope.
Further, traveling wheel is provided with the suspension bracket suspension rod, the suspension bracket suspension rod passes through the row
Walk pulley to be connected with cat road track cable.
Traveling wheel is installed on suspension bracket suspension rod, traveling wheel can walk along cat road track cable, realize cat road veil
Demolition Construction.
Further, the suspension bracket suspension rod is provided with the adjusting means for adjusting the traveling wheel position.
By arranging adjusting means, the regulation of traveling wheel position can be carried out according to the height of cat road track cable, it is ensured that
Job platform is adjusted along cat road track cable walking process according to angle, it is ensured that job platform keeps basic horizontal.
Further, the suspension bracket suspension rod is many, is respectively arranged at the front-end and back-end of the job platform, position
The suspension bracket suspension rod in the job platform front end is connected with cat road manrope.
The suspension bracket suspension rod of job platform front end is attached with cat road manrope, the peace of Mao Dao sides net can be completed
Dress.
Further, the suspension bracket suspension rod of the job platform front end is connected with cat road manrope by manrope locating dowel
Connect.
By arranging manrope locating dowel, positioning can be better achieved, so as to by the suspension bracket of job platform front end
Suspension rod is attached with cat road manrope, completes the installation of Mao Dao sides net.
Further, also including closed railing, two adjacent suspension bracket suspension rods are connected by the closed railing
Connect.
By arranging closed railing, it is ensured that the personal safety of operating personnel, unexpected falling is prevented.
Further, the closed railing includes the first bar and the second bar, and first bar is along the job platform
Left and right directions is arranged, and second bar is arranged along the fore-and-aft direction of the job platform.
First bar can be by the adjacent suspension bracket suspension rod of job platform front end and the adjacent suspension of job platform rear end
Bracket suspension rod is coupled together respectively, and the second bar can respectively connect the suspension bracket suspension rod of the outermost rear and front end of job platform
Pick up and, form the guard bar structure of closing, prevent operating personnel from falling, it is ensured that operating personnel's personal safety.
Further, the suspension bracket suspension rod of the job platform front end is connected with rack winch steel wire rope, the work
The suspension bracket suspension rod of industry platform rear end is connected with steel wire rope of windlass is pulled.
The walking of job platform is to drive rack winch steel wire rope respectively using tower top hoist engine and pull hoist engine steel
Cord provides counter-force and tractive force and fulfils assignment the movable of platform.
Further, the locking device is high-strength bolt.The connection that frame is conjugated with cat road is completed using high-strength bolt, is protected
Zheng Mao roads veil erection stage job platform is fixed in this place.
Further, the job platform is welded with the suspension bracket suspension rod.
By welding, it is ensured that job platform has enough rigidity and intensity.
The beneficial effect of the suspension type cat road veil construction movable operation platform that the present invention is provided is：The suspension type cat road
Veil constructs movable operation platform directly by the use of cat road track cable as support system, the suspension being fixed on cat road track cable
Bracket suspension rod provides in job platform weight transmitting to cat road track cable job platform and completes cat road veil for operating personnel
Install without support, conjugate frame using locking device and cat road and be connected, it is ensured that cat road veil erection stage as platform fixation, and
And job platform can be walked by suspension bracket suspension rod along cat road track cable, complete the dismounting of cat road veil.
The suspension type cat road veil construction movable operation platform that the present invention is provided combines cat road track cable, cat road and conjugates
Frame, the cat road manrope Deng Mao roads component of a system, breach the heavier big system high-altitude Bei Leishi construction operation platforms of tradition,
The design of a large amount of built-in fittings, pre-buried is avoided, is that bigger space has been reserved in the construction of other structures.Frame is conjugated with cat road
Integration design, with good integrity, multiple functional, portable construction, be convenient to mount and dismount, efficiency high, beneficial to the spy such as cost-effective
Point.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the cross-sectional view of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention；
Fig. 2 is the skiagraph of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention；
Fig. 3 is the plan of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention；
Fig. 4 is another vertical section of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention
Figure；
Fig. 5 is the another vertical section of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention
Figure；
Fig. 6 is the stereogram of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention；
Fig. 7 is that the cat road of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention laterally leads to
Road, side veil remove layout drawing.
Figure acceptance of the bid note is respectively：
1- suspension bracket suspension rods, 2- job platforms, the closed railings of 3-, 4- platform beams, 5- locking devices, 6- walkings are slided
Wheel, 7- cats road manrope, 8- cats road displacement frame, 9- cats road pull device, 10- cats road track cable, 11- pulls hoist engine steel wire
Rope, 12- rack winch steel wire ropes, 13- rod members positioning rope.
Specific embodiment
At present, suspension bridge cat road track cable displacement rigid frame, the construction operation platform of pull device are set up using beret truss
Construction operation platform, it is relatively complicated using construction operation platform construction, arrange that built-in fitting quantity is more, supporting construction is multiple
Miscellaneous, system is huge more heavy, dismounting complexity etc..
In consideration of it, the designer of the present invention is by long-term exploration and trial, and multiple experiment and effort, constantly
Reform and innovation, devise a kind of suspension type cat road veil construction movable operation platform, with reference to the displacement of cat road track cable 10, cat road
Frame 8, the Deng Mao roads component of a system of cat road manrope 7, breach the heavier big system high-altitude Bei Leishi constructing operations of tradition and put down
Platform, it is to avoid the design of a large amount of built-in fittings, pre-buried, is bigger space has been reserved in the construction of other structures.
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Present invention enforcement generally described and illustrated in accompanying drawing herein
The component of example can be arranged and designed with a variety of configurations.Therefore, reality of the invention below to providing in the accompanying drawings
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected enforcement of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Embodiment
Fig. 1 is the cross-sectional view of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention；Fig. 2
For the skiagraph of suspension type cat road veil provided in an embodiment of the present invention construction movable operation platform；Fig. 3 is real for the present invention
The plan of the suspension type cat road veil construction movable operation platform of example offer is provided；Fig. 6 is provided in an embodiment of the present invention outstanding
The stereogram of hanging cat road veil construction movable operation platform；Fig. 1～3 and Fig. 6 are referred to, one kind is present embodiments provided
Suspension type cat road veil construction movable operation platform, for the construction of cat road wire side, the suspension type cat road veil construction is removable
Operating platform includes job platform 2, and job platform 2 is provided with platform beams 4, and job platform 2 is by suspension bracket suspension rod 1 and cat
Road track cable 10 is flexibly connected, and suspension bracket suspension rod 1 conjugates frame 8 and locks by locking device 5 and cat road, suspension bracket suspension rod 1
It is connected with cat road manrope 7.It is drop-down to carry out that the lower end of cat road displacement frame 8 is provided with cat road pull device 10.
The suspension type cat road veil constructs movable operation platform directly by the use of cat road track cable 10 as support system, Gu
Suspension bracket suspension rod 1 on cat road track cable 10 is operator by the weight transmitting of job platform 2 to cat road track cable 10
Member provides job platform 2 and completes installing without support for cat road veil, is connected with cat road displacement frame 8 using locking device 5, it is ensured that cat
, used as the fixation of platform, and job platform 2 can be along the row of cat road track cable 10 by suspension bracket suspension rod 1 for road veil erection stage
Walk, complete the dismounting of cat road veil.
The suspension type cat road veil construction movable operation platform that the present embodiment is provided becomes with reference to cat road track cable 10, cat road
Position frame 8, the Deng Mao roads component of a system of cat road manrope 7, breach the heavier big system high-altitude Bei Leishi constructing operations of tradition
Platform, it is to avoid the design of a large amount of built-in fittings, pre-buried, is bigger space has been reserved in the construction of other structures.With with cat road
The design of the displacement integration of frame 8, with good integrity, multiple functional, portable construction, be convenient to mount and dismount, efficiency high, beneficial to saving into
This features such as.
On the basis of the technical scheme of the suspension type cat road veil construction movable operation platform that above-described embodiment is provided,
Further, Fig. 4 is another vertical section of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention
Figure；Fig. 5 is the another skiagraph of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention；Please join
Fig. 2, Fig. 4 and Fig. 5 are read, traveling wheel 6 is provided with suspension bracket suspension rod 1, suspension bracket suspension rod 1 is by traveling wheel 6 and cat
Road track cable 10 connects.
Traveling wheel 6 is installed on suspension bracket suspension rod 1, traveling wheel 6 can walk along cat road track cable 10, realize cat road
The Demolition Construction of veil.
Fig. 4 and Fig. 5 is referred to, suspension bracket suspension rod 1 is provided with the adjusting means for adjusting the position of traveling wheel 6.Should
Work as understanding, adjusting means adopts existing structure, as long as the regulation of traveling wheel 6 can be realized.For example can be cut with scissors using one end
The activity adjustment bar for connecing, traveling wheel 6 press against the other end of the activity adjustment bar, and by the rotation of activity adjustment bar walking is realized
The regulation of pulley 6, activity adjustment bar can be fixed support by supporting construction.
By arranging adjusting means, the regulation of the position of traveling wheel 6 can be carried out according to the height of cat road track cable 10, be protected
Card job platform 2 is adjusted along the walking process of cat road track cable 10 according to angle, it is ensured that job platform 2 keeps basic water
It is flat.
Fig. 1～Fig. 6 is referred to, suspension bracket suspension rod 1 is many, is respectively arranged at the front-end and back-end of job platform 2, position
Suspension bracket suspension rod 1 in the front end of job platform 2 is connected with cat road manrope 7.
The suspension bracket suspension rod 1 of the front end of job platform 2 is attached with cat road manrope 7, Mao Dao sides net can be completed
Install.
The suspension bracket suspension rod 1 of the front end of job platform 2 is connected with cat road manrope 7 by manrope locating dowel.
By arranging manrope locating dowel, positioning can be better achieved, so as to by the suspension bracket of the front end of job platform 2
Suspension rod 1 is attached with cat road manrope 7, completes the installation of Mao Dao sides net.
Fig. 1～Fig. 6 is referred to, the suspension type cat road veil construction movable operation platform also includes closed railing 3, phase
Two adjacent suspension bracket suspension rods 1 are connected by closed railing 3.
By arranging closed railing 3, it is ensured that the personal safety of operating personnel, unexpected falling is prevented.
Closed railing 3 includes the first bar and the second bar, and the first bar is arranged along the left and right directions of job platform 2, the second bar
Fore-and-aft direction along job platform 2 is arranged.
First bar can hang on the adjacent suspension bracket suspension rod 1 of the front end of job platform 2 and the adjacent of the rear end of job platform 2
Hanging prop frame suspension rod 1 is coupled together respectively, and the second bar can be by the suspension bracket suspension rod 1 of the outermost rear and front end of job platform 2
Couple together respectively, form the guard bar structure of closing, prevent operating personnel from falling, it is ensured that operating personnel's personal safety.
Fig. 7 is that the cat road of suspension type cat road veil construction movable operation platform provided in an embodiment of the present invention laterally leads to
Road, side veil remove layout drawing；Refer to Fig. 7, suspension bracket suspension rod 1 and the rack winch steel wire of the front end of job platform 2
Rope 12 connects, and the suspension bracket suspension rod 1 of the rear end of job platform 2 is connected with steel wire rope of windlass 11 is pulled.Set on cat road manrope 7
It is equipped with rod member and positions rope 13 to be positioned.
The walking of job platform 2 is to drive rack winch steel wire rope 12 respectively using tower top hoist engine and pull hoist engine
Steel wire rope 11 provides counter-force and tractive force and fulfils assignment the movable of platform 2.
Fig. 2 is referred to, locking device 5 is high-strength bolt.The connection that frame 8 is conjugated with cat road is completed using high-strength bolt, is protected
Zheng Mao roads veil erection stages job platform 2 is fixed in this place.
Job platform 2 is welded with suspension bracket suspension rod 1.And it is the platform beams 4 of job platform 2, operation veil, closed
The grade of railing 3 welds together with suspension bracket suspension rod 1, by welding, it is ensured that job platform 2 has enough rigidity and intensity.
In sum, the suspension type cat road veil construction movable operation platform that the present embodiment is provided combines cat road track cable
10th, cat road displacement frame 8, the Deng Mao roads component of a system of cat road manrope 7, breach the heavier big system high-altitude Bei Leishi of tradition
Construction operation platform, it is to avoid the design of a large amount of built-in fittings, pre-buried, is bigger space has been reserved in the construction of other structures.Tool
You Yumao roads conjugate the integration of frame 8 design, with good integrity, multiple functional, portable construction, be convenient to mount and dismount, efficiency high, profit
The features such as cost-effective.
In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " is, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention and simplified description, rather than indicate or imply that the equipment or element of indication must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or more,
Unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or it is integral；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
The first and second feature directly contacts can be included, it is also possible to be not directly contact but by it including the first and second features
Between other characterisation contact.And, fisrt feature second feature " on ", " top " and " above " include that first is special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of suspension type cat road veil construction movable operation platform, constructs, it is characterised in that including work for cat road wire side
Industry platform, the job platform is provided with platform beams, and the job platform is lived by suspension bracket suspension rod with cat road track cable
Dynamic connection, the suspension bracket suspension rod conjugates frame locking by locking device and cat road, and the suspension bracket suspension rod is helped with Mao Dao
Hand rope connects；Be provided with traveling wheel on the suspension bracket suspension rod, the suspension bracket suspension rod by the traveling wheel with
The track cable connection of cat road；The suspension bracket suspension rod is provided with the adjusting means for adjusting the traveling wheel position.
2. suspension type cat road veil according to claim 1 is constructed movable operation platform, it is characterised in that the suspension
Bracket suspension rod is many, the front-end and back-end of the job platform is respectively arranged at, positioned at described in the job platform front end
Suspension bracket suspension rod is connected with cat road manrope.
3. suspension type cat road veil according to claim 2 is constructed movable operation platform, it is characterised in that the operation
The suspension bracket suspension rod of platform front end is connected with cat road manrope by manrope locating dowel.
4. suspension type cat road veil according to claim 2 is constructed movable operation platform, it is characterised in that also including envelope
Enclosed railing, two adjacent suspension bracket suspension rods are by the closed railing connection.
5. suspension type cat road veil according to claim 4 is constructed movable operation platform, it is characterised in that the closing
Formula railing includes the first bar and the second bar, and first bar is arranged along the left and right directions of the job platform, the second bar edge
The fore-and-aft direction of the job platform is arranged.
6. suspension type cat road veil according to claim 1 is constructed movable operation platform, it is characterised in that the operation
The suspension bracket suspension rod of platform front end is connected with rack winch steel wire rope, the suspension bracket suspension rod of the job platform rear end with
Pull steel wire rope of windlass connection.
7. suspension type cat road veil according to claim 1 is constructed movable operation platform, it is characterised in that the locking
Device is high-strength bolt.
8. suspension type cat road veil according to claim 1 is constructed movable operation platform, it is characterised in that the operation
Platform is welded with the suspension bracket suspension rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927773.9A CN105369741B (en) | 2015-12-14 | 2015-12-14 | Suspension-type movable operation platform for constructing catwalk face net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927773.9A CN105369741B (en) | 2015-12-14 | 2015-12-14 | Suspension-type movable operation platform for constructing catwalk face net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105369741A CN105369741A (en) | 2016-03-02 |
| CN105369741B true CN105369741B (en) | 2017-04-19 |
Family
ID=55372330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510927773.9A Active CN105369741B (en) | 2015-12-14 | 2015-12-14 | Suspension-type movable operation platform for constructing catwalk face net |
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| CN (1) | CN105369741B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593125A (en) * | 2019-10-11 | 2019-12-20 | 中交二公局第五工程有限公司 | Suspension bridge catwalk system |
| CN114108480B (en) * | 2021-12-01 | 2023-05-26 | 中交第二航务工程局有限公司 | Suspension bridge catwalk full-section lower sliding frame arrangement structure and construction method thereof |
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| JPS6429505A (en) * | 1987-07-24 | 1989-01-31 | Ishikawajima Harima Heavy Ind | Method of adjusting catwalk at time of erection of suspension bridge cable through method of air spinning construction |
| CN102409838A (en) * | 2011-08-22 | 2012-04-11 | 中国建筑第八工程局有限公司 | Moveable operating platform and method for constructing suspended ceiling of roof by using same |
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| CN205205686U (en) * | 2015-12-14 | 2016-05-04 | 中交一公局第三工程有限公司 | Portable operation platform of suspension type catwalk veil construction |
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| JPS6429505A (en) * | 1987-07-24 | 1989-01-31 | Ishikawajima Harima Heavy Ind | Method of adjusting catwalk at time of erection of suspension bridge cable through method of air spinning construction |
| CN102409838A (en) * | 2011-08-22 | 2012-04-11 | 中国建筑第八工程局有限公司 | Moveable operating platform and method for constructing suspended ceiling of roof by using same |
| CN202273179U (en) * | 2011-09-28 | 2012-06-13 | 中国一冶集团有限公司 | High-altitude steel cable suspended working platform for construction and maintenance on outer side of bridge box girder |
| CN202881852U (en) * | 2012-08-02 | 2013-04-17 | 巨力索具股份有限公司 | Suspension bridge cable installation system |
| CN203701560U (en) * | 2013-12-31 | 2014-07-09 | 森特士兴集团股份有限公司 | Suspension hanging basket for high-altitude roofing inner plate construction |
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| 南京长江第四大桥猫道设计与架设施工;李有为等;《第二十届全国桥梁学术会议》;20120515;第581页最后一段，第585页最后两段，图1-17 * |
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| CN105369741A (en) | 2016-03-02 |
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