CN219951723U - Hoisting structure of steel strand tensioning equipment of cast-in-situ box girder of bridge engineering - Google Patents
Hoisting structure of steel strand tensioning equipment of cast-in-situ box girder of bridge engineering Download PDFInfo
- Publication number
- CN219951723U CN219951723U CN202321065298.5U CN202321065298U CN219951723U CN 219951723 U CN219951723 U CN 219951723U CN 202321065298 U CN202321065298 U CN 202321065298U CN 219951723 U CN219951723 U CN 219951723U
- Authority
- CN
- China
- Prior art keywords
- truss
- guide beam
- tensioning
- box girder
- trusses
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 26
- 239000010959 steel Substances 0.000 title claims abstract description 26
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 16
- 230000005012 migration Effects 0.000 claims description 2
- 238000013508 migration Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a hoisting structure of steel strand tensioning equipment of a cast-in-situ box girder of bridge engineering, which comprises two groups of trusses which are arranged in parallel, wherein a plurality of groups of guide beams which are arranged in parallel are arranged between the trusses, the guide beams are connected with the trusses, the guide beams positioned at two sides are fixed with the trusses, the guide beams at other positions can horizontally move on the trusses, and a pulling device is arranged between the adjacent guide beams and is respectively connected with the corresponding guide beams. According to the utility model, the truss is assembled on the box girder plate on the working face, the phenomenon that the working face cannot be tensioned due to factors is eliminated, the self-lifting preparation, lifting, sliding and installation and positioning processes of the tensioning jack device are controlled remotely by adopting the electric hoist, the installation and positioning tensioning is completed by adopting the electric hoist to slide to the next bundle of steel strands, and the tensioning efficiency and the construction enthusiasm are improved; meanwhile, the phenomenon that the steel pipe deforms and sinks in the traditional scaffold erection and tensioning process or the capping beam tensioning working face is narrow is eliminated, and the casualty accident phenomenon is caused by the falling of tensioning equipment.
Description
Technical Field
The utility model relates to the field of buildings, in particular to a hoisting structure of a steel strand tensioning device of a cast-in-situ box girder of a bridge engineering.
Background
The common bridge engineering steel strand is stretched by adopting traditional manual pulling stretching jack equipment or building a scaffold to assist in displacement. The manual traction is extremely easy to damage the tensioning jack or injure personnel due to improper traction, and potential safety hazard is generated. The scaffold is generally used for lengthening a cast-in-situ box girder scaffold in a manner of erecting the scaffold, the scaffold is high in height, the box girder outer contour scaffold is used as a working surface, and the scaffold body is easy to deform due to too high stress, so that the phenomenon of instability or instability of the outer frame is caused. The tensioning jack equipment generates dynamic load or has large self weight in the tensioning process, potential safety hazards exist in the scaffold erection, the tensioning speed is slow, the steel strand elevation displacement needs to be in one-to-one correspondence, and the efficiency is low.
Disclosure of Invention
The utility model aims to solve the problems in the background art, and provides a hoisting structure of a bridge engineering cast-in-situ box girder steel strand tensioning device, which can improve the tensioning and installing efficiency of the device, coordinate flexibility and easy analysis of action points, has strong environmental adaptation capability, improves safety and reduces potential safety hazards of bridges.
The aim of the utility model is mainly realized by the following technical scheme:
the utility model provides a cast-in-place case roof beam steel strand wires stretch-draw equipment hoisting structure of bridge engineering, includes two sets of parallel arrangement's trusses, be provided with a plurality of sets of parallel arrangement's guide beam between the truss, the guide beam all is connected with the truss, and the guide beam that is located both sides is all fixed with the truss, and the guide beam homoenergetic of other positions carries out horizontal migration on the truss, is provided with pulling device between the adjacent guide beam, and pulling device is connected with the guide beam that corresponds respectively. At present, common bridge engineering steel strands are tensioned, and manual dragging tensioning jack equipment or scaffold erection is generally adopted for assisting in displacement. The manual pulling is extremely easy to damage the tensioning jack or injure personnel due to improper pulling, so that potential safety hazard phenomenon is generated. The scaffold is generally used for lengthening a cast-in-situ box girder scaffold in a manner of erecting the scaffold, the scaffold is high in height, the box girder outer contour scaffold is used as a working surface, and the scaffold body is easy to deform due to too high stress, so that the phenomenon of instability or instability of the outer frame is caused. The tensioning jack equipment generates dynamic load or has large self weight in the tensioning process, potential safety hazards exist in the scaffold erection, the tensioning speed is slow, the steel strand elevation displacement needs to be in one-to-one correspondence, and the efficiency is low. In order to solve the problem, the lifting structure of the steel strand tensioning equipment of the bridge engineering cast-in-situ box girder comprises two groups of trusses which are arranged in parallel, wherein the trusses are anchored on a box girder component, a plurality of groups of parallel guide beams are arranged between the trusses and are connected with the trusses, the guide beams positioned on two sides are fixed with the trusses, the guide beams at other positions can horizontally move on the trusses, pulling devices are arranged between the adjacent guide beams, and the pulling devices are respectively connected with the corresponding guide beams. The guide beam is utilized to horizontally move on the truss, so that stretching equipment below the guide beam is controlled to longitudinally and horizontally, longitudinally and longitudinally, vertically and randomly displace, the stretching installation efficiency of the equipment is improved, meanwhile, the truss coordination flexibility and truss action point are easy to analyze, stress points or high-altitude and large-span parts can be controlled to be high in environmental adaptation capability, safety is achieved, and potential safety hazards of bridges are reduced.
Further, the truss comprises a truss I, a truss II, a truss III, a truss IV, a truss five, a truss six and a truss seven, wherein the truss I, the truss IV and the truss six are horizontally arranged, and the truss IV and the truss six are positioned above the truss I and are fixed at the end heads; the truss II and the truss III are respectively fixed with the end head of the truss I and then connected with the same end of the truss IV to form a triangle structure; and the end, away from the truss I, of the truss seven is fixed with the end, away from the truss four, of the truss six. Truss one, truss two, truss three are the main truss, and the part is hollow body reduction dead weight, and mainly plays the bearing and plays the bottom, decomposes truss four, truss five, truss six and seven dead weights of truss and upper portion load, and truss four, truss five, truss six and truss seven are secondary truss, and main atress decomposes and provides the track and lays the working face.
Further, in order to facilitate the fixation with the box girder members, an anchor plate is provided below the truss, and the anchor plate is fixed with the truss one. At least two anchor plates are arranged below each truss and are respectively fixed with the end position of the truss I, so that stability is improved.
Further, a sliding rail is arranged above the truss IV, and the sliding rail is located above the truss IV and the truss VI at the same time and is fixed with the truss IV and the truss VI. The track provides a walking track, so that the sliding guide beams and the front and rear guide beams of the track work or are smoothly installed and removed, and the tensioning construction speed is improved.
Further, the guide beam comprises a front guide beam, a sliding guide beam and a rear guide beam, wherein the sliding guide beam is positioned between the front guide beam and the rear guide beam, the front guide beam and the rear guide beam are both fixed on the sliding rails of the two groups of trusses, and the sliding guide beam is respectively connected with the sliding rails of the two groups of trusses and can move along the sliding rails. The pulling devices are respectively arranged on the front guide beam and the rear guide beam, and are connected with the sliding guide beam. The pulling device adopts an electric hoist and an iron chain, the electric hoist is respectively arranged on a corresponding front guide beam and a corresponding rear guide beam, the iron chain is simultaneously connected with the electric hoist and a sliding guide beam, through the structural arrangement, the front guide beam and the rear guide beam play roles in working face and balance pulling force of a lifting hook of the electric hoist, and the sliding guide beam is the most important guide beam component, and needs to slide forwards or backwards and has the function of lifting equipment. The electric hoist is controlled randomly by adjusting the longitudinal and transverse displacement, the front and back displacement and the up and down displacement, the direction axis of the stretching position is easy to control, and the stretching is finished at the fastest speed.
Further, a lifting device is arranged on the sliding guide beam and is connected with tensioning equipment. The lifting device also adopts an electric hoist and an iron chain, which solves the problems of parallel displacement or vertical lifting of tensioning equipment, and avoids the phenomena of equipment damage and potential safety hazard occurrence caused by dragging in the traditional mode. The construction efficiency is improved, the potential safety hazards of the adjacent edges, such as object striking, are eliminated, and the construction efficiency of vertical lifting or horizontal displacement is improved.
In conclusion, compared with the prior art, the utility model has the following beneficial effects:
1. the construction efficiency is improved: according to the utility model, the truss is assembled on the box girder plate on the working face, the phenomenon that the working face cannot be tensioned due to factors is eliminated, the electric hoist is adopted for remote control in the processes of self-lifting preparation, lifting, sliding, installation and positioning of the tensioning jack equipment, the electric hoist is adopted for sliding to the next bundle of steel strands for installation and positioning tensioning, and the tensioning efficiency and the construction enthusiasm are improved.
2. Improving the safety standard: eliminating the phenomena of deformation and sinking of the steel pipe or narrow tensioning working surface of the bent cap in the traditional scaffold erection and tensioning process, and casualties caused by falling of tensioning equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
fig. 1 is a schematic structural view of the present utility model.
The names corresponding to the reference numerals in the drawings are:
the device comprises a box girder component 1, an anchor plate 2, a truss I3, a truss III 4, a truss II 5, a truss V6, a truss IV 7, a leading girder 8, a pulling device 9, a fixing buckle 10, a sliding leading girder 11, a sliding rail 12, a pulling device 13, a rear leading girder 14, a truss VI 15, a truss V16, a tensioning device 17 and a connecting buckle 18.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
As shown in fig. 1, the common cast-in-situ box girder steel strand of the extra-large bridge in the scheme is limited in stretching and pulling, or the large-scale prefabricated Liang Liangchang is arranged in the technical field of hoisting of stretching equipment such as a high-road embankment and a prefabricated field on the bridge. The girder comprises two groups of girders which are arranged in parallel, the girders are all arranged on the box girder component 1, a plurality of groups of parallel guide girders are arranged between the girders, the guide girders are all connected with the girders, the guide girders positioned on two sides are all fixed with the girders, the guide girders at other positions can horizontally move on the girders, a pulling device is arranged between the adjacent guide girders, and the pulling device is respectively connected with the corresponding guide girders. The guide beam is utilized to horizontally move on the truss, so that stretching equipment below the guide beam is controlled to longitudinally and horizontally, longitudinally and longitudinally, vertically and randomly displace, the stretching installation efficiency of the equipment is improved, meanwhile, the truss coordination flexibility and truss action point are easy to analyze, stress points or high-altitude and large-span parts can be controlled to be high in environmental adaptation capability, safety is achieved, and potential safety hazards of bridges are reduced.
And specifically, the truss comprises a truss one 3, a truss two 5, a truss three 4, a truss four 7, a truss five 6, a truss six 15 and a truss seven 16, wherein the truss one 3, the truss four 7 and the truss six 15 are horizontally arranged, an anchor plate 2 is arranged below the truss one 3, and the anchor plate 2 is fixed with the truss one 3. At least two anchor plates 2 are arranged below each truss I3 and are respectively fixed with the end positions of the trusses I3, the anchor plates 2 are fixed on the box girder component 1 through expansion screws, and safe and reliable effective working face fulcrums are provided for decomposing or transmitting loads under the stress conditions of the trusses IV 7, V6, V15 and V16. The truss II 5 and the truss III 4 are respectively fixed with the end head of the truss I3 and then connected with the same end of the truss IV 7 to form a triangle structure; truss four 7 and truss six 15 are positioned above truss one 3, and the ends of truss four 7 and truss six 15 are fixed; truss five 6, truss seven 16 and truss two 5 are all fixed with the same end of truss one 3, and truss five 6 is kept away from the end of truss one 3 and is fixed with truss four 7 and truss six 15 simultaneously, and truss seven 16 is kept away from the end of truss one 3 and truss six 15 is kept away from the end of truss four 7 fixedly. Therefore, a triangle structure is formed among the truss II 5, the truss IV 7 and the truss V6, and among the truss V6, the truss VI 15 and the truss V16, and the stability of the whole truss is improved by utilizing the characteristic that the triangle has stability. The truss I3, the truss II 5 and the truss III 4 are main trusses, the partial hollow body reduces dead weight, the partial hollow body mainly plays a role in bearing, the truss IV 7, the truss V6, the truss VI 15 and the truss V seven 16 are decomposed from dead weight and upper load, the truss IV 7, the truss V6, the truss VI 15 and the truss V seven 16 are secondary trusses, and the main stress decomposition and the rail laying working surface provision are realized.
A slide rail 12 is arranged above the truss four 7, and the slide rail 12 is simultaneously positioned above the truss four 7 and the truss six 15 and is fixed with the truss four 7 and the truss six 15. The slide rail 12 is also fixed on the truss IV 7 and the truss VI 15 through the anchor plate, and the slide rail 12 mainly provides a walking track, so that the work or the assembly and disassembly of the sliding guide beam and the front and rear guide beams are smooth, and the tensioning construction speed is improved.
The guide beam comprises a front guide beam 8, a sliding guide beam 11 and a rear guide beam 14, wherein the sliding guide beam 11 is positioned between the front guide beam 8 and the rear guide beam 14, the front guide beam 8 and the rear guide beam 14 are fixed on the sliding rails 12 of the two groups of trusses through the fixing buckles 10, the front guide beam 8 and the rear guide beam 14 cannot move after being fixed, and the sliding guide beam 11 is respectively connected with the sliding rails 12 of the two groups of trusses through the connecting buckles 18 and can move along the sliding rails 12. Both the retaining buckle 10 and the connecting buckle 18 are existing components. The pulling devices are arranged on the front guide beam 8 and the rear guide beam 14 respectively, and are connected with the sliding guide beam 11. The pulling device is named as a front pulling device 9 and a rear pulling device 13 respectively, the front pulling device 9 and the rear pulling device 13 are both an electric hoist and an iron chain, the electric hoist is respectively arranged on a front guide beam 8 and a rear guide beam 14 which correspond to each other through hanging rings, the iron chain is simultaneously connected with the electric hoist and a sliding guide beam 11, the iron chain is pulled through the electric hoist, the sliding guide beam 11 moves, through the structural arrangement, the front guide beam 8 and the rear guide beam 14 play a role in working face of a lifting hook of the electric hoist and balance pulling force, the sliding guide beam 11 is the most important guide beam component, and the electric hoist is required to slide forwards or slide backwards and has a lifting equipment function. The electric hoist is controlled randomly by adjusting the longitudinal and transverse displacement, the front and back displacement and the up and down displacement, the direction axis of the stretching position is easy to control, and the stretching is finished at the fastest speed.
A lifting device is arranged on the sliding guide beam 11, and is connected with tensioning equipment 17. The hoisting device also adopts electric hoist and iron chain, and electric hoist passes through rings and slip nose girder 11 to be connected, and the iron chain is connected with electric hoist and tensioning equipment 17 simultaneously, and tensioning equipment 17 also is called tensioning equipment jack equipment, and parallel displacement or the vertical lift of tensioning equipment 17 have been solved to this scheme, avoid traditional mode, drag damage equipment and potential safety hazard emergence phenomenon. The construction efficiency is improved, the potential safety hazards of the adjacent edges, such as object striking, are eliminated, and the construction efficiency of vertical lifting or horizontal displacement is improved.
The hydraulic tensioning jack device is capable of controlling longitudinal and transverse displacement, longitudinal and longitudinal displacement and vertical displacement at will, improving tensioning installation efficiency of the device, coordinating flexibility of trusses, enabling truss action points to be analyzed easily, controlling stress points or large-height and large-span parts, being strong in environment adaptation capability, safe in steel strand tensioning trusses and reducing potential safety hazards of bridges.
The front and rear guide beams play roles in working face and balance tension of the lifting hook of the electric hoist, the sliding guide beam 11 is the most important guide beam component, and the front sliding or the rear sliding is needed and has the function of lifting equipment. The electric hoist is controlled randomly by adjusting the longitudinal and transverse displacement, the front and back displacement and the up and down displacement, the direction axis of the stretching position is easy to control, and the stretching is finished at the fastest speed.
According to the scheme, the construction efficiency is improved, the truss is assembled on the box girder component by the working face, the phenomenon that the working face cannot be tensioned due to factors is eliminated, the electric hoist is adopted for remote control in the process of self-lifting preparation, lifting, sliding, installation and positioning of the tensioning jack equipment, the electric hoist is adopted for sliding to the next bundle of steel strands for installation and positioning tensioning, and the tensioning efficiency and the construction enthusiasm are improved. The safety standard is also improved, and the phenomenon that the steel pipe deforms and sinks or the capping beam tensioning working surface is narrow in the traditional scaffold erection tensioning process is eliminated, and the casualty accident phenomenon is caused by the falling of tensioning equipment.
The foregoing detailed description of the utility model has been presented for purposes of illustration and description, and it should be understood that the utility model is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the utility model.
Claims (7)
1. A cast-in-situ box girder steel strand stretching equipment hoisting structure of bridge engineering is characterized in that: including two sets of parallel arrangement's trusses, be provided with a plurality of sets of parallel arrangement's guide beam between the truss, the guide beam all is connected with the truss, and is located the guide beam of both sides and all fixed with the truss, and the guide beam homoenergetic of other positions carries out horizontal migration on the truss, is provided with draw gear between the adjacent guide beam, and draw gear is connected with the guide beam that corresponds respectively.
2. The hoisting structure of the bridge engineering cast-in-situ box girder steel strand tensioning equipment, as claimed in claim 1, is characterized in that: the truss comprises a truss I (3), a truss II (5), a truss III (4), a truss IV (7), a truss V (6), a truss VI (15) and a truss V (16), wherein the truss I (3), the truss IV (7) and the truss VI (15) are horizontally arranged, and the truss IV (7) and the truss VI (15) are positioned above the truss I (3) and are fixed at the end heads; the truss II (5) and the truss III (4) are respectively fixed with the end head of the truss I (3) and then connected with the same end of the truss IV (7) to form a triangle structure; truss five (6), truss seven (16) and truss two (5) are all fixed with the same end of truss one (3), and truss five (6) keep away from the end of truss one (3) and are fixed with truss four (7) and truss six (15) simultaneously, and truss seven (16) keep away from the end of truss one (3) and truss six (15) keep away from the end of truss four (7) fixedly.
3. The hoisting structure of the bridge engineering cast-in-situ box girder steel strand tensioning equipment, as claimed in claim 2, is characterized in that: an anchor plate (2) is arranged below the truss I (3), and the anchor plate (2) is fixed with the truss I (3).
4. The hoisting structure of the bridge engineering cast-in-situ box girder steel strand tensioning equipment, as claimed in claim 2, is characterized in that: and a sliding rail (12) is arranged above the truss IV (7), and the sliding rail (12) is simultaneously positioned above the truss IV (7) and the truss VI (15) and is fixed with the truss IV (7) and the truss VI (15).
5. The hoisting structure of the bridge engineering cast-in-situ box girder steel strand tensioning equipment, as claimed in claim 4, is characterized in that: the guide beam comprises a front guide beam (8), a sliding guide beam (11) and a rear guide beam (14), wherein the sliding guide beam (11) is positioned between the front guide beam (8) and the rear guide beam (14), the front guide beam (8) and the rear guide beam (14) are both fixed on the sliding rails (12) of the two groups of trusses, and the sliding guide beam (11) is respectively connected with the sliding rails (12) of the two groups of trusses and can move along the sliding rails (12).
6. The hoisting structure of the bridge engineering cast-in-situ box girder steel strand tensioning equipment, as claimed in claim 5, is characterized in that: the pulling devices are respectively arranged on the front guide beam (8) and the rear guide beam (14), and are connected with the sliding guide beam (11).
7. The hoisting structure of the bridge engineering cast-in-situ box girder steel strand tensioning equipment, as claimed in claim 5, is characterized in that: the sliding guide beam (11) is provided with a lifting device, and the lifting device is connected with tensioning equipment (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321065298.5U CN219951723U (en) | 2023-05-05 | 2023-05-05 | Hoisting structure of steel strand tensioning equipment of cast-in-situ box girder of bridge engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321065298.5U CN219951723U (en) | 2023-05-05 | 2023-05-05 | Hoisting structure of steel strand tensioning equipment of cast-in-situ box girder of bridge engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219951723U true CN219951723U (en) | 2023-11-03 |
Family
ID=88555520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321065298.5U Active CN219951723U (en) | 2023-05-05 | 2023-05-05 | Hoisting structure of steel strand tensioning equipment of cast-in-situ box girder of bridge engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219951723U (en) |
-
2023
- 2023-05-05 CN CN202321065298.5U patent/CN219951723U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104929373B (en) | Large span Square Steel Tubes Truss and its accumulation slippage construction method | |
| CN100543235C (en) | The method and system of erecting steel trusses by stay cable auxiliary complete cantilever | |
| CN106812328B (en) | The whole two step lifting construction methods of string prestressed steel structure rack with hanging layer | |
| CN208815424U (en) | A kind of bridge descending hanging basket | |
| CN108033367B (en) | Synchronous lifting device and lifting method for steel column and cylinder frame alternately supported steel platform and tower crane | |
| CN214220561U (en) | Building slope facade diversion rail formula hanging flower basket construction platform | |
| CN201106155Y (en) | Inclined guy cable auxiliary full cantaliver crane trussed steel beam device | |
| CN111749140A (en) | Truss integral lifting type bridge high pier creeping formwork device and construction method | |
| CN212025936U (en) | Equipment for mounting continuous steel strand stay cable at tower end of cable-stayed bridge | |
| CN219951723U (en) | Hoisting structure of steel strand tensioning equipment of cast-in-situ box girder of bridge engineering | |
| CN203284126U (en) | Simple composite gantry high-altitude weight hoisting device | |
| CN116537078A (en) | Hoisting structure of steel strand tensioning equipment of cast-in-situ box girder of bridge engineering | |
| CN212426804U (en) | Hang basket moving system | |
| CN202744960U (en) | Large-span steel truss suspension bridge closure device | |
| CN107059654A (en) | The compound overlength Hanging basket on front support of single cable plane and its installation method | |
| CN212077660U (en) | Large-span wide width bridge girder rhombus hanging basket construction structure | |
| CN212426803U (en) | Portable bailey frame cradle | |
| CN109205475B (en) | Device and method for assembling and disassembling girder type gantry crane in tunnel through connection of trusses | |
| CN206800201U (en) | The compound Hanging basket on front support of single cable plane | |
| CN218114945U (en) | Synchronous lifting control cable wind rope system | |
| CN111576183A (en) | Construction method for longitudinally moving and erecting box girder | |
| CN218029086U (en) | Prestressed tensioning trolley | |
| CN219585686U (en) | Safe telescopic channel for suspended tower crane driver | |
| CN212688727U (en) | Bridge erecting machine | |
| CN210798994U (en) | Concrete structure wall body unilateral template structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |