CN110158460A - Construction operation movable hanging basket and its construction method under across electric railway Bridge Beam - Google Patents
Construction operation movable hanging basket and its construction method under across electric railway Bridge Beam Download PDFInfo
- Publication number
- CN110158460A CN110158460A CN201910437399.2A CN201910437399A CN110158460A CN 110158460 A CN110158460 A CN 110158460A CN 201910437399 A CN201910437399 A CN 201910437399A CN 110158460 A CN110158460 A CN 110158460A
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- Prior art keywords
- hanging basket
- component
- traveling
- cantilever shalving
- track
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses construction operation movable hanging basket and its construction methods under across the electric railway Bridge Beam of one kind.Construction operation movable hanging basket under across electric railway Bridge Beam, including along bridge to the track being arranged on bridge floor, running mechanism, Hanging Basket component, lifting hydraulic cylinder, hydraulic station, running mechanism includes two and sets traveling trolley in orbit, traveling car frame top is fixedly installed cantilever shalving, the overhanging end of cantilever shalving is relatively fixed to be equipped with two groups of limiting brackets, the vertical hack lever of two of component is movably disposed between two groups of limiting brackets on the cantilever shalving of two groups of traveling trolleies up and down respectively on Hanging Basket, two diagonal braces of Hanging Basket lower component are connected to the lower end of two vertical hack levers, the both ends of the job platform of Hanging Basket lower component are rotationally connect with two diagonal braces respectively, a chain block is separately connected between the front end two sides of job platform and two vertical hack levers, the cylinder body of lifting hydraulic cylinder is fixed on cantilever shalving, its piston rod with The top cross-bar connection of component on Hanging Basket.
Description
Technical field
The present invention relates to construction operation movable hanging baskets under across the electric railway Bridge Beam of one kind, belong to bridge Construction Technology neck
Domain.The invention further relates to the construction methods of above-mentioned movable hanging basket.
Background technique
With the continuous development of society, bridge is constantly built in city, relatively due to bridge design life itself
Short, the volume of traffic is continuously increased in city, and various overloadings are serious, more accelerate the damage of each component of bridge, bridge is determined
Phase maintenance and reinforcement also becomes a problem for needing to solve therewith.
The device for generally providing bridge beam body bottom and side working drawing review is cage or the cantilevered out branch with scaffold tubes production
Frame operates on these hanging tools as platform, construction personnel station, has certain influence to traffic safety under construction personnel and bridge,
Device overall structure cannot be moved freely than cumbersome, and station variation is more when constructing, and working efficiency is low；Also occur at present big
Type moving hanging basket, and Large-scale Mobile hanging basket, movement speed are slow, mobility is poor, and beam bottom construction vertical space can not when narrow
The lifting and folding that platform is carried out according to operating condition do not adapt to the changeable construction requirement in scene.
Summary of the invention
In view of the above defects of the prior art, the present invention provides a kind of conveniently moving, using safe across electricity
Construction operation movable hanging basket under gasification railroad bridge beam solves the problems, such as limited in beam bottom construction space.
The present invention is achieved by the following technical solution: construction operation is mobile under across the electric railway Bridge Beam of one kind
Hanging Basket, it is characterized in that: including track, running mechanism, Hanging Basket component, lifting hydraulic cylinder, hydraulic station, the track is along bridge to fixation
It is arranged on bridge floor, the running mechanism includes that two lower parts have the traveling trolley of travelling wheel group, driving traveling trolley traveling
Power device, two traveling trolley settings spaced apart, the traveling trolley is set to by its travelling wheel group
On the track, the vehicle frame top of the traveling trolley is fixedly installed cantilever shalving, and the overhanging end of the cantilever shalving is relatively fixed
Equipped with two groups of limiting brackets, the Hanging Basket component includes component and Hanging Basket lower component on Hanging Basket, and component includes two on the Hanging Basket
The vertically arranged vertical hack lever of root, the top cross-bar being fixedly connected between two vertical hack lever tops, two described perpendicular
Between the two groups of limiting brackets on cantilever shalving for being movably disposed at two groups of traveling trolleies up and down respectively to hack lever, under the Hanging Basket
Component includes platform assembly, chain block, and the platform assembly includes job platform and two diagonal braces, two diagonal brace difference
It is connected to the lower end of two vertical hack levers, the both ends of the job platform rotationally connect with two diagonal braces respectively
It connects, is separately connected the chain block, the hook end of two chain blocks in the front end two sides of the job platform
It is connected on two vertical hack levers, the lifting hydraulic cylinder is two, is separately positioned on two traveling trolleies
On, the cylinder body of the lifting hydraulic cylinder is fixed on the cantilever shalving, on the piston rod of the lifting hydraulic cylinder and the Hanging Basket
The top cross-bar of component connects, and the hydraulic lifting oil cylinder is connect by high-pressure oil pipe with the hydraulic station.
In the present invention, traveling trolley to being moved, while can drive Hanging Basket component together along suitable along track along bridge
Bridge is to being moved, and the piston rod of lifting cylinder can drive the top cross-bar of component on Hanging Basket to move up and down when acting, and then band
The vertical hack lever of component moves up and down on dynamic Hanging Basket, so that Hanging Basket lower component be driven to be gone up and down.Job platform in the present invention
It can fold, fold, can control job platform to be in normal operation position or control job platform by manual control chain block
It folded, folded.When operation of the present invention, Hanging Basket is movable to designated position and carries out lifting and evolutionary operation platform.
Further, to be folded, being folded convenient for job platform, hinge company is provided with around the job platform
The guard rail that can be folded inwardly connect.Guard rail is holded up when operation, when job platform needs to fold, by protective fence
After bar folds inwardly, job platform can smoothly be folded, be folded.
Further, to improve operational security, the track is two disposed in parallel, each traveling trolley
Travelling wheel group includes two groups of active wheels, two groups of driven wheel groups, and the lower part of every group of active wheels and driven wheel group is provided with two groups
With the guide wheel group of track cooperation.
Further, to guarantee moving up and down for vertical hack lever, composite track roller, institute are provided on the limiting bracket
State and be provided with bearing positive stop strip on vertical hack lever, the composite track roller be located at the bearing positive stop strip on the vertical hack lever it
Between.
Further, to improve working security, insulated nylon plate is fixed in the job platform bottom.In electrification
Above railway when operation, by the way that insulated nylon plate is arranged, solves the problems, such as construction safety, ensure that traffic safety.
Further, to guarantee operation safety, counterweight is provided in each cantilever shalving.
The present invention also provides a kind of construction parties of construction operation movable hanging basket under above-mentioned across electric railway Bridge Beam
Method, the technical solution adopted is that: include the following steps: (1) track installation: the bridge floor in cleaning track installation region, using spiral shell
Track mount plate is fixed on bridge floor by bolt, by track and track mount plate firm welding；(2) power section of traveling trolley is pacified
Dress: based on traveling car frame, travelling wheel group, power device and the control system of assembling traveling trolley carry out after assembling
Test；(3) traveling trolley cantilever shalving is installed: cantilever shalving being fixed by bolts and is mounted in traveling car frame, in cantilever shalving
Overhanging end corresponding position install limiting bracket, counterweight is set in each cantilever shalving；(4) Hanging Basket component is installed: will be on Hanging Basket
Component is installed in place, and two diagonal braces of Hanging Basket lower component and two vertical hack levers of component on Hanging Basket are fixed together,
Component is folded in the setting of diagonal brace outboard end, the job platform both ends of Hanging Basket lower component are connect with component is folded, by chain block
Chain lock end connect with the lifting lug for being located at job platform front end, the other end of chain block is fixed on the vertical frame of component on Hanging Basket
On bar, the folding of job platform is realized by manual control chain block, is folded, protection guardrail is installed in job platform surrounding；
(5) hydraulic station is installed: lifting hydraulic cylinder being mounted on cantilever shalving and the top of component on the head end and Hanging Basket of piston rod is horizontal
Beam connection, lifting hydraulic cylinder are connect by high-pressure oil pipe with hydraulic station.
The beneficial effects of the present invention are: overall structure of the present invention is simple, installation is simple, safe and reliable.In the present invention
Movable hanging basket can move along the bridge, beam bottom job platform can be gone up and down using hydraulic system, while job platform is available
Chain block is folded, is folded, and can easily be crossed when moving process encounters barrier, and bridge bottom vertical blank is occupied in use process
Between can be adjusted, when not in use move be contracted to beam body side.When using operation of the present invention, it is greatly improved operation effect
Rate reduces beam bottom operation safety risk, also ensures electric railway traffic safety under bridge.Present invention reduces crossing over electricity
The difficulty constructed under gasification railroad bridge, improves construction efficiency, ensure that the safety of running railway line under construction personnel and bridge.
The present invention solves the problems, such as that Hanging Basket can not move under complex environment in the prior art, solves limited in beam bottom construction space
Problem.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the specific embodiment of the invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the schematic top plan view of Fig. 1；
Fig. 4 is the enlarged diagram of traveling trolley part in the present invention；
Fig. 5 is the stereoscopic schematic diagram in the specific embodiment of the invention；
Fig. 6 is limiting bracket and the enlarged diagram at vertical hack lever in Fig. 5；
In figure, 1, vertical hack lever, 2, limiting bracket, 3, top cross-bar, 4, tailpiece of the piston rod connection component, 5, raise-lower hydraulic
Cylinder, 6, cantilever shalving, 7, sunpender, 8, travelling wheel group, 81, active wheels, 82, driven wheel group, 83, guide wheel group, 9, motor, 10,
Track, 11, beam body, 12, guard rail, 13, lifting lug, 14, insulated nylon plate, 15, job platform, 16, fold component, 17, tiltedly
Support, 18, chain block, 19, counterweight, 20, hydraulic station, 21, crossbeam on the outside of cantilever shalving, 22, track mount plate, 23, vehicle frame, 24,
Composite track roller, 25, bearing positive stop strip.
Specific embodiment
Below by non-limiting embodiment and in conjunction with attached drawing, the present invention is further illustrated:
As shown in the picture, construction operation movable hanging basket under a kind of across electric railway Bridge Beam comprising track 10, traveling
Mechanism, Hanging Basket component, lifting hydraulic cylinder 5, hydraulic station 20.The track 10 is two disposed in parallel, using P50 rail, institute
State track 10 by its track mount plate 22 that its bottom is arranged in along bridge to being fixed on bridge floor, two orbit centre spacing
For 600mm, postive stop baffle is arranged in track both ends.Traveling trolley that the running mechanism includes two lower parts with travelling wheel group 8,
The power device of traveling trolley traveling, two traveling trolley settings spaced apart are driven, the traveling trolley passes through
Its travelling wheel group 8 is set on the track 10.The travelling wheel group of traveling trolley is mounted on 23 lower part of vehicle frame, each traveling
The travelling wheel group 8 of trolley includes two groups of active wheels, 81, two groups of driven wheel groups 82, every group of active wheels 81 and driven wheel group 82
Lower part is provided with two groups of guide wheel groups 83 cooperated with track 10, and active wheels 81 are driven by motor 9.The traveling trolley
23 top of vehicle frame is fixedly installed cantilever shalving 6, and cantilever shalving 6 uses section steel manufacture, and the upper end has overhanging end, the cantilever shalving 6
Overhanging end on relatively fixed be equipped with two groups of limiting brackets 2.The Hanging Basket component includes component and Hanging Basket lower component, institute on Hanging Basket
Component on Hanging Basket is stated to include two vertically arranged vertical hack levers 1, be fixedly connected between two vertical 1 tops of hack lever
Top cross-bar 3, two vertical hack levers 1 are movably disposed at two groups on the cantilever shalving 6 of two groups of traveling trolleies up and down respectively
Between limiting bracket 2, vertical hack lever 1 is limited by the limiting bracket 2 of two sides, and the outside of cantilever shalving 6 is provided with cantilever
Vertical hack lever 1 is trapped among in cantilever shalving by crossbeam 21 on the outside of frame.The Hanging Basket lower component includes platform assembly, chain block 18, institute
Stating platform assembly includes job platform 15 and two diagonal braces 17, and two diagonal braces 17 are connected to two vertical hack levers
1 lower end, the both ends of the job platform 15, which pass through to be arranged on diagonal brace 17 respectively, folds component 16 and two diagonal braces
17 connections, job platform 15 can be rotated around component is folded.Folding component 16 is the prior art, including folding with pin hole
Connecting plate and pin shaft.It is respectively arranged with a lifting lug 13 in the front end two sides of the job platform 15, two lifting lugs 13 connect respectively
The chain block 18 is connect, the hook end of two chain blocks 18 is connected on two vertical hack levers 1.
The guard rail 12 that can be folded inwardly of hinge connection is provided with around job platform 15.In the job platform
15 bottoms are fixed with insulated nylon plate 14.The lifting hydraulic cylinder 5 is two, is separately positioned on two traveling trolleies,
The cylinder body of the lifting hydraulic cylinder 5 is fixed on the cantilever shalving 6, on the piston rod and the Hanging Basket of the lifting hydraulic cylinder 5
The top cross-bar 3 of component connects, and the hydraulic lifting oil cylinder 5 is connect by high-pressure oil pipe with the hydraulic station 20.Hydraulic station 20
It mainly include the accessories such as hydraulic pump, hydraulic valve block and matched high-pressure oil pipe composition for the prior art, hydraulic station 20 passes through connection
Component is connect with traveling trolley, can be mobile with traveling trolley.Counterweight 19 is provided in each cantilever shalving 6.
To guarantee moving up and down for vertical hack lever 1, in the present embodiment, composite rolling wheel axis is provided on the limiting bracket 2
24 are held, bearing positive stop strip 25 is provided on the vertical hack lever 1, the composite track roller 24 is located at the axis on vertical hack lever 1
It holds between positive stop strip 25.
The construction method of construction operation movable hanging basket, includes the following steps: (1) under above-mentioned across electric railway Bridge Beam
Track installation: track mount plate 22 is fixed on the bridge floor on the beam body edge of a wing by the bridge floor in cleaning track installation region using bolt,
By track 10 and 22 firm welding of track mount plate；(2) power section of traveling trolley is installed: based on the vehicle frame 23 of traveling trolley
Body, travelling wheel group 8, power device and the control system of assembling traveling trolley, is tested after assembling；(3) traveling trolley cantilever
Frame installation: cantilever shalving 6 is fixed by bolts on the vehicle frame 23 for being mounted on traveling trolley, in the overhanging end corresponding positions of cantilever shalving 6
Installation limiting bracket 2 is set, counterweight 19 is set in each cantilever shalving 6；(4) Hanging Basket component is installed: component on Hanging Basket is installed to
Then position is fixed the installation of crossbeam 21 on the outside of cantilever shalving, then by two of component on two diagonal braces 17 of Hanging Basket lower component and Hanging Basket
The vertical hack lever 1 of root is fixed together, and component 16 is folded in the setting of 17 outboard end of diagonal brace, by the job platform of Hanging Basket lower component
15 both ends are connect with component 16 is folded, by the chain lock end of two chain blocks 18 respectively be located at two of 15 front end of job platform
Lifting lug 13 connects, and the other end of chain block 18 is fixed on Hanging Basket on the vertical hack lever 1 of component, pulls calabash by manual control
Reed 18 realizes folding, folding for job platform, installs protection guardrail 12 in 15 surrounding of job platform；(5) hydraulic station is installed: will be risen
Descending liquid cylinder pressure 5 is mounted on cantilever shalving 6 and connects the top cross-bar 3 of component on the head end and Hanging Basket of piston rod, by hydraulic station
It is connect with traveling trolley, lifting hydraulic cylinder 5 is connect by high-pressure oil pipe with hydraulic station 20.First trial operation after being installed, it is ensured that
Normal use after safe and reliable.
When the invention works, traveling trolley under the driving of power device can along track 10 along bridge to being moved, together
When drive the job platform 15 being located under beam together along bridge to being moved, when piston rod movement of lifting cylinder 5, can drive extension
The top cross-bar 3 of component moves up and down on basket, and then the vertical hack lever 1 of component on Hanging Basket is driven to move up and down, thus with movement
Industry platform 15 is gone up and down.Job platform 15 in the present invention can be folded, be folded by chain block 18, pass through manual control hand
Drawing cucurbit 18 can control, job platform 15 is in normal operation position or control job platform 15 is folded, folded.Hanging Basket exists
In moving process, if there is equipment under beam bottom barrier or bridge to hinder, after can folding inwardly guard rail 12 and pass through people
Job platform 15 is folded, is folded by industry control chain block 18, is then controlled hydraulic system again and is mentioned Hanging Basket component
It rises, such Hanging Basket is integrally promoted and invested on the outside of beam body, so that it may continue to move.It, can after reaching specified construction part
Control hydraulic system transfers Hanging Basket component, and job platform 15 is unfolded control chain block 18, and manually guard rail is unfolded
It is fixed, thus operation can be carried out in beam bottom.
Other parts in the present embodiment are the prior art, and details are not described herein.
Claims (7)
1. construction operation movable hanging basket under a kind of across electric railway Bridge Beam, it is characterized in that: including track (10), traveling machine
Structure, Hanging Basket component, lifting hydraulic cylinder (5), hydraulic station (20), the track (10) along bridge to being fixed on bridge floor, it is described
Running mechanism includes traveling trolley with travelling wheel group (8) of two lower parts, the power device for driving the traveling of traveling trolley, and two
The traveling trolley setting spaced apart, the traveling trolley are set to the track (10) by its travelling wheel group (8)
On, the vehicle frame top of the traveling trolley is fixedly installed cantilever shalving (6), and the overhanging end of the cantilever shalving (6) is relatively fixed to be set
There are two groups of limiting brackets (2), the Hanging Basket component includes component and Hanging Basket lower component on Hanging Basket, and component includes two on the Hanging Basket
The vertically arranged vertical hack lever (1) of root, the top cross-bar (3) being fixedly connected between two vertical hack lever (1) tops, two
Vertical hack lever (1) described in root is movably disposed at two groups of limiting brackets on the cantilever shalving (6) of two groups of traveling trolleies up and down respectively
(2) between, the Hanging Basket lower component includes platform assembly, chain block (18), and the platform assembly includes job platform (15)
With two diagonal braces (17), two diagonal braces (17) are connected to the lower end of two vertical hack levers (1), the operation horizontal
The both ends of platform (15) are rotationally connect with two diagonal braces (17) respectively, in the front end two sides of the job platform (15) point
Not Lian Jie a chain block (18), the hook end of two chain blocks (18) be connected to two it is described vertical
On hack lever (1), the lifting hydraulic cylinder (5) is two, is separately positioned on two traveling trolleies, the lifting hydraulic cylinder
(5) cylinder body is fixed on the cantilever shalving (6), the top of component on the piston rod and the Hanging Basket of the lifting hydraulic cylinder (5)
Portion's crossbeam (3) connection, the hydraulic lifting oil cylinder (5) are connect by high-pressure oil pipe with the hydraulic station (20).
2. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1, it is characterized in that: the work
The guard rail (12) that can be folded inwardly of hinge connection is provided with around industry platform (15).
3. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1, it is characterized in that: the rail
Road (10) is two disposed in parallel, the travelling wheel group (8) of each traveling trolley include two groups of active wheels, two groups it is driven
The lower part of wheel group, every group of active wheels and driven wheel group is provided with the guide wheel group of two groups with track (10) cooperation.
4. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1, it is characterized in that: the limit
It is provided with composite track roller on position bracket (2), is provided with bearing positive stop strip, the composite rolling wheel on the vertical hack lever (1)
Bearing is located between the bearing positive stop strip on the vertical hack lever (1).
5. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1 or 2 or 3 or 4, feature
It is: is fixed with insulated nylon plate in the job platform bottom.
6. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1 or 2 or 3 or 4, feature
It is: is provided with counterweight in each cantilever shalving (6).
7. the construction party of construction operation movable hanging basket under a kind of across electric railway Bridge Beam a method as claimed in any one of claims 1 to 5
Method, it is characterized in that: including the following steps: (1) track installation: the bridge floor in cleaning track installation region is pacified track using bolt
Loading board is fixed on bridge floor, by track and track mount plate firm welding；(2) power section of traveling trolley is installed: small with traveling
Based on vehicle carriage, travelling wheel group, power device and the control system of assembling traveling trolley are tested after assembling；(3) traveling
The installation of trolley cantilever shalving: cantilever shalving being fixed by bolts and is mounted in traveling car frame, corresponding at the overhanging end of cantilever shalving
Limiting bracket is installed in position, and counterweight is arranged in each cantilever shalving；(4) Hanging Basket component is installed: component on Hanging Basket is installed in place,
Two diagonal braces of Hanging Basket lower component and two vertical hack levers of component on Hanging Basket are fixed together, are set in diagonal brace outboard end
Set and fold component, the job platform both ends of Hanging Basket lower component are connect with component is folded, by the chain lock end of chain block be located at
The lifting lug of job platform front end connects, and the other end of chain block is fixed on Hanging Basket on the vertical hack lever of component, by artificial
Control chain block realizes folding, folding for job platform, installs protection guardrail in job platform surrounding；(5) hydraulic station is installed:
Lifting hydraulic cylinder is mounted on cantilever shalving and is connected the top cross-bar of component on the head end and Hanging Basket of piston rod, raise-lower hydraulic
Cylinder is connect by high-pressure oil pipe with hydraulic station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437399.2A CN110158460A (en) | 2019-05-24 | 2019-05-24 | Construction operation movable hanging basket and its construction method under across electric railway Bridge Beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437399.2A CN110158460A (en) | 2019-05-24 | 2019-05-24 | Construction operation movable hanging basket and its construction method under across electric railway Bridge Beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110158460A true CN110158460A (en) | 2019-08-23 |
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ID=67632185
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910437399.2A Pending CN110158460A (en) | 2019-05-24 | 2019-05-24 | Construction operation movable hanging basket and its construction method under across electric railway Bridge Beam |
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| CN (1) | CN110158460A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111576216A (en) * | 2020-04-22 | 2020-08-25 | 中铁广州工程局集团有限公司 | Bridge tuyere construction trolley |
| CN113215978A (en) * | 2021-05-13 | 2021-08-06 | 中国化学工程第四建设有限公司 | Construction method for laying pipeline along with bridge |
| CN114086471A (en) * | 2021-10-25 | 2022-02-25 | 中国五冶集团有限公司 | Simple and easy mobile device of bridge annex installation |
| CN115354589A (en) * | 2022-09-22 | 2022-11-18 | 江苏中车城市发展有限公司 | Urban railway hangs basket system of sliding fast |
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| CN113215978B (en) * | 2021-05-13 | 2022-05-17 | 中国化学工程第四建设有限公司 | Construction method for laying pipeline along with bridge |
| CN114086471A (en) * | 2021-10-25 | 2022-02-25 | 中国五冶集团有限公司 | Simple and easy mobile device of bridge annex installation |
| CN115354589A (en) * | 2022-09-22 | 2022-11-18 | 江苏中车城市发展有限公司 | Urban railway hangs basket system of sliding fast |
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