CN216615511U - Lifting equipment for mounting cross-river variable-section continuous steel box girder - Google Patents
Lifting equipment for mounting cross-river variable-section continuous steel box girder Download PDFInfo
- Publication number
- CN216615511U CN216615511U CN202123012943.0U CN202123012943U CN216615511U CN 216615511 U CN216615511 U CN 216615511U CN 202123012943 U CN202123012943 U CN 202123012943U CN 216615511 U CN216615511 U CN 216615511U
- Authority
- CN
- China
- Prior art keywords
- box girder
- river
- installation
- variable
- steel box
- 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
Images
Landscapes
- Revetment (AREA)
Abstract
The utility model discloses a hoisting device for mounting a cross-river variable-section continuous steel box girder. This jack-up lifting device is used in installation of crossing continuous steel box girder of river variable cross-section has played very important effect for the construction of assembling of steel box girder through the temporary support that is as construction auxiliary measure in the work progress, can carry out calculation analysis to the full-bridge structure through establishing three-dimensional finite element model through excellence, the position when obtaining the unstressed size of each component and each beam segment installation obtains the target linear shape of installation, arrange out safe reasonable temporary support, through two 45t portal frames cooperation aquatic interim steel pipe pile support techniques of span 65 meters, make the speed of steel box girder installation obtain improving, equipment input quantity is relatively few and greatly reduced construction risk influence on water, it is slow to have solved lifting device installation speed, it is many to drop into equipment, the problem that work efficiency is low.
Description
Technical Field
The utility model relates to the technical field of cross-river variable-section continuous steel box girder hoisting, in particular to hoisting equipment for cross-river variable-section continuous steel box girder installation.
Background
The river-crossing variable-section continuous steel box girder is hoisted, the hoisted steel box girder is large in weight and long in length, the positioning precision of the steel box girder is within 10mm, the horizontal precision is 2mm, the vertical precision is 1mm, the control key point of a positioning system needs to be solved, the river-crossing steel box girder belongs to water operation, construction processes such as a construction operation platform are also important, the construction difficulty is high, in order to meet the requirements of installation line shape and assembly precision of a bridge and ensure the normal operation of hoisting construction of the steel box girder, the construction processes need to be developed and researched and equipment needs to be selected so as to ensure the hoisting quality of the steel box girder, some existing hoisting equipment for installing the river-crossing variable-section continuous steel box girder have some defects in the using process, for example, the installation speed of the hoisting equipment is low, a plurality of equipment is used, the working efficiency is low, and the internal components of the hoisting equipment are not convenient to connect and disassemble, and is also not convenient for the maintenance of the hoisting equipment assembly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide hoisting equipment for mounting a cross-river variable-section continuous steel box girder, which solves the problems of low mounting speed, more equipment used and low working efficiency of the hoisting equipment in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a cross continuous steel box girder installation of river variable cross-section and use jack-up lifting device, includes first steel trestle, one side of first steel trestle is provided with second steel trestle, the top of first steel trestle and second steel trestle transversely is provided with the crossbearer subassembly, the both sides at crossbearer subassembly both ends are fixed with fixed plate respectively, one side of first steel trestle and second steel trestle is fixed with the outer container respectively.
Preferably, the top of first steel trestle and second steel trestle is vertical respectively and is provided with the portal frame, the top of portal frame respectively with the both sides fixed connection of crossbearer subassembly bottom.
Preferably, the inside top and the bottom of fixed plate run through respectively and are provided with the preformed hole, the inside of preformed hole runs through and is provided with set screw, the outside one side of set screw is provided with lock nut, set screw's outside is provided with the external screw thread, lock nut's inside is provided with the internal thread with external screw thread matched with.
Preferably, the fixed plate members are symmetrically arranged in four groups about a vertical center line of the cross frame assembly.
Preferably, the reinforcing rods are fixed to two sides of the outer box respectively, the net pieces are fixed to two sides of the outer box and the interiors of two ends of the outer box respectively, safety rings are arranged inside two sides of the top end of the outer box respectively, a sliding block is fixed to the bottom end of each safety ring, and sliding grooves are formed in two sides of the top end of the outer box respectively.
Preferably, the sliding block is embedded in the sliding groove, and the outer size of the sliding block is smaller than the inner size of the sliding groove.
Compared with the prior art, the utility model has the beneficial effects that: the lifting equipment for mounting the cross-river variable-section continuous steel box girder not only improves the speed of mounting the steel box girder, has relatively small equipment investment and greatly reduces the influence of overwater construction risks, but also facilitates the connection, disassembly and assembly of internal components of the lifting equipment and the overhaul and maintenance of the components of the lifting equipment;
(1) the temporary support serving as a construction auxiliary measure plays an extremely important role in the assembling construction of the steel box girder in the construction process by arranging the first steel trestle, the portal frame, the transverse frame assembly and the second steel trestle, the full-bridge structure can be calculated and analyzed by preferentially establishing a three-dimensional finite element model to obtain the stress-free size of each component and the position of each beam section during installation so as to obtain the target installation line shape, the mechanical allocation combination mode is optimized, the working efficiency is improved, the stress state of the steel box girder structure of the bridge is mastered during use, the safe and reasonable temporary support is arranged through stress calculation, the speed of installing the steel box girder is improved by matching two 45t portal frames with 65 m span with the technology of the temporary steel pipe pile support in water, the equipment investment quantity is relatively small, the overwater construction risk influence is greatly reduced, and before the positioning welding is finished, gaps, misalignment and three-dimensional coordinates at the butt joint of the segmented steel box girder are checked, relevant record confirmation work is performed, and formal welding can be performed after the condition that the gaps, misalignment and three-dimensional coordinates are qualified is confirmed;
(2) by arranging the fixing plate, the fixing screw, the preformed hole and the locking nut, in the process of connecting and installing the cross frame assembly in the hoisting equipment, the cross frame assembly can be correspondingly connected, installed and fixed through the fixing plate fixed on two sides of two ends by utilizing the fixing screw penetrating through the preformed hole in the fixing plate and the locking nut arranged outside the fixing screw and used for fastening, and the connecting, installing and disassembling are convenient;
(3) through being provided with the outer container, the stiffener, the net piece, safety ring, slider and spout, lifting device is after the equipment is accomplished, when needing to carry out inspection and maintenance and later maintenance to it in the use, the inspector can be through getting into to first steel landing stage or the outer container of second steel landing stage one side fixed, and can hang the locking in going to correspond the safety ring that outer container top set up with safety rope couple on one's body, walk about when going on to the equipment outside inspection and maintenance outside the outer box, safety rope can drag safety ring and utilize the slider to come to slide in the inside of spout, the inspection personnel's of being convenient for activity inspection is maintained, the stiffener and the net piece of setting can carry out outside protection to the workman.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is an enlarged partial cross-sectional view taken at A in FIG. 1 according to the present invention;
FIG. 3 is an enlarged front view, partially sectioned, structural diagram of the fixing plate according to the present invention;
FIG. 4 is an enlarged side view of a partial section of the outer case of the present invention;
fig. 5 is an enlarged partial sectional view of the safety ring according to the present invention.
In the figure: 1. a first steel trestle; 2. a gantry; 3. a cross frame assembly; 4. fixing a plate; 5. an outer box; 6. a second steel trestle; 7. a set screw; 8. reserving a hole; 9. locking the nut; 10. a reinforcing bar; 11. a mesh sheet; 12. a safety ring; 13. a slider; 14. a chute.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1-5, a lifting device for mounting a cross-river variable-section continuous steel box girder comprises a first steel trestle 1, a second steel trestle 6 is arranged on one side of the first steel trestle 1, a cross frame assembly 3 is transversely arranged at the top ends of the first steel trestle 1 and the second steel trestle 6, fixed plates 4 are respectively fixed on two sides of two ends of the cross frame assembly 3, and an outer box 5 is respectively fixed on one side of the first steel trestle 1 and one side of the second steel trestle 6;
the top ends of the first steel trestle 1 and the second steel trestle 6 are respectively and vertically provided with a portal frame 2, and the top ends of the portal frames 2 are respectively and fixedly connected with two sides of the bottom end of the cross frame component 3;
specifically, as shown in fig. 1 and 2, the temporary support serving as a construction auxiliary measure in the construction process plays an extremely important role in the assembly construction of the steel box girder, the full-bridge structure can be calculated and analyzed by preferentially establishing a three-dimensional finite element model, the stress-free size of each component and the position of each girder section during installation are obtained, the target installation line shape is obtained, the mechanical allocation combination mode is optimized, the working efficiency is improved, the stress state of the steel box girder structure of the bridge is mastered during use, safe and reasonable temporary supports are arranged through stress calculation, the installation speed of the steel box girder is improved by matching two 45t portal frames 2 with 65 meters of span with the underwater temporary steel pipe pile support technology, the equipment investment quantity is relatively small, the overwater construction risk influence is greatly reduced, and before the positioning welding is finished, the gap between the butt joint nodes of the sectional steel box girders is required to be met, And checking the misalignment amount and the three-dimensional coordinate, making relevant record confirmation work, and performing formal welding after the allowance is confirmed to be qualified.
Example 2: the top end and the bottom end of the inside of the fixing plate 4 are respectively provided with a preformed hole 8 in a penetrating manner, a fixing screw 7 is arranged in the preformed hole 8 in a penetrating manner, one side of the outside of the fixing screw 7 is provided with a locking nut 9, the outside of the fixing screw 7 is provided with an external thread, an internal thread matched with the external thread is arranged in the locking nut 9, and four groups of the fixing plate 4 are symmetrically arranged about the vertical central line of the transverse frame component 3;
specifically, as shown in fig. 1 and fig. 3, in the process of connecting and installing the cross frame assembly 3 inside the hoisting device, the cross frame assembly 3 can be correspondingly connected, installed and fixed through the fixing plates 4 fixed at both ends between the cross frame assembly 3 by using the fixing screws 7 penetrating through the inside preformed holes 8 of the fixing plates 4 and the locking nuts 9 for fastening arranged outside the fixing screws 7, and the connection, installation and detachment are convenient.
Example 3: reinforcing rods 10 are respectively fixed on two sides of the outer box 5, net pieces 11 are respectively fixed on two sides and the inner parts of two ends of the outer box 5, safety rings 12 are respectively arranged in two sides of the top end of the outer box 5, sliding blocks 13 are fixed at the bottom ends of the safety rings 12, sliding grooves 14 are respectively arranged in two sides of the top end of the outer box 5, the sliding blocks 13 are embedded in the sliding grooves 14, and the external size of the sliding blocks 13 is smaller than the internal size of the sliding grooves 14;
specifically, as shown in fig. 1, 4 and 5, after the hoisting equipment is assembled, when the hoisting equipment needs to be inspected, overhauled and maintained in a later period in a using process, an inspector can get into the first steel trestle 1 or the outer box 5 fixed on one side of the second steel trestle 6, the safety rope hook on the body can be hung and locked in the safety ring 12 arranged on the top end of the corresponding outer box 5, when the inspection and maintenance are carried out on the outside of the equipment by walking inside the outer box 5, the safety rope can drag the safety ring 12 to slide by utilizing the sliding block 13 in the sliding groove 14, the movable inspection and maintenance of the inspector are facilitated, and the arranged reinforcing rod 10 and the mesh piece 11 can protect the worker from the outside.
The working principle is as follows: when the temporary support is used, the temporary support serving as a construction auxiliary measure plays an extremely important role in the construction process of assembling the steel box girder, the full-bridge structure can be calculated and analyzed by preferentially establishing a three-dimensional finite element model, the stress-free size of each component and the position of each girder section during installation are obtained, the target installation line shape is obtained, the mechanical allocation combination mode is optimized, the operation efficiency is improved, when the temporary support is used, the stress state of the steel box girder structure of the bridge is mastered, the safe and reasonable temporary support is arranged through stress calculation, the speed of installing the steel box girder is improved by matching two 45t portal frames 2 with 65 m spans with the underwater temporary steel pipe pile support technology, the equipment investment quantity is relatively small, the overwater construction risk influence is greatly reduced, and before the positioning welding is finished, the gap at the butt joint of the sectional steel box girder is required to be matched with the gap at the butt joint position, The unfitness of butt joint and the three-dimensional coordinate are checked, relevant record confirmation work is made, formal welding can be carried out after the confirmation is qualified, in the process of connecting and installing the transverse frame component 3 in the hoisting equipment, the transverse frame component 3 can be correspondingly connected, installed and fixed through the fixing plate components 4 fixed at two ends by utilizing the fixing screws 7 penetrating through the preformed holes 8 in the fixing plate components 4 and the locking nuts 9 arranged outside the fixing screws 7 and used for fastening, the hoisting equipment is convenient to connect, install and disassemble, after the assembly is finished, when the hoisting equipment needs to be inspected, overhauled and maintained at later period in the use process, inspectors can enter the outer box 5 fixed at one side of the first steel trestle 1 or the second steel trestle 6 and can hang and lock the safety rope on the body to the safety ring 12 arranged at the top end of the outer box 5, when walking inside the outer container 5 and examining and maintaining the outside of the equipment, the safety rope can drag the safety ring 12 to slide in the sliding groove 14 by utilizing the sliding block 13, so that the movable examination and maintenance of the inspectors are facilitated, and the arranged reinforcing rod 10 and the mesh 11 can protect the outside of the workers.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a cross continuous steel box girder installation of river variable cross-section and use jack-up lifting device, includes first steel trestle (1), its characterized in that: one side of first steel trestle (1) is provided with second steel trestle (6), the top of first steel trestle (1) and second steel trestle (6) transversely is provided with crossbearer subassembly (3), the both sides at crossbearer subassembly (3) both ends are fixed with fixed plate (4) respectively, one side of first steel trestle (1) and second steel trestle (6) is fixed with outer container (5) respectively.
2. The hoisting equipment for the installation of the cross-river variable-section continuous steel box girder of claim 1 is characterized in that: the top of first steel trestle (1) and second steel trestle (6) is vertical portal frame (2) of being provided with respectively, the top of portal frame (2) respectively with the both sides fixed connection of crossbearer subassembly (3) bottom.
3. The hoisting equipment for installing the cross-river variable-section continuous steel box girder according to claim 1, which is characterized in that: the fixed plate is characterized in that a preformed hole (8) is formed in the top end and the bottom end inside the fixed plate (4) respectively in a penetrating mode, a fixing screw (7) is arranged inside the preformed hole (8) in a penetrating mode, a locking nut (9) is arranged on one side of the outside of the fixing screw (7), an external thread is arranged on the outside of the fixing screw (7), and an internal thread matched with the external thread is arranged inside the locking nut (9).
4. The hoisting equipment for the installation of the cross-river variable-section continuous steel box girder of claim 1 is characterized in that: four groups of fixing plate pieces (4) are symmetrically arranged on the vertical center line of the transverse frame component (3).
5. The hoisting equipment for the installation of the cross-river variable-section continuous steel box girder of claim 1 is characterized in that: reinforcing rods (10) are fixed to two sides of the outer box (5) respectively, meshes (11) are fixed to two sides of the outer box (5) and the interiors of two ends of the outer box respectively, safety rings (12) are arranged inside two sides of the top end of the outer box (5) respectively, sliders (13) are fixed to the bottom ends of the safety rings (12), and sliding grooves (14) are arranged inside two sides of the top end of the outer box (5) respectively.
6. The hoisting equipment for the installation of the cross-river variable-section continuous steel box girder of claim 5 is characterized in that: the sliding block (13) is embedded in the sliding groove (14), and the outer size of the sliding block (13) is smaller than the inner size of the sliding groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123012943.0U CN216615511U (en) | 2021-12-03 | 2021-12-03 | Lifting equipment for mounting cross-river variable-section continuous steel box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123012943.0U CN216615511U (en) | 2021-12-03 | 2021-12-03 | Lifting equipment for mounting cross-river variable-section continuous steel box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216615511U true CN216615511U (en) | 2022-05-27 |
Family
ID=81701642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123012943.0U Active CN216615511U (en) | 2021-12-03 | 2021-12-03 | Lifting equipment for mounting cross-river variable-section continuous steel box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216615511U (en) |
-
2021
- 2021-12-03 CN CN202123012943.0U patent/CN216615511U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110485737B (en) | BIM technology-based steel mesh frame positioning installation construction method | |
| CN107905109B (en) | Equal-load simulation segmented preloading construction method for crossing type bridge cast-in-place platform | |
| CN109376429B (en) | Concrete dam template safety construction analysis method based on finite element simulation | |
| CN108468430A (en) | The not contour bearing steel truss structure hoisting slide construction of large span | |
| CN108678398B (en) | Pre-assembly method for steel structure truss of reinforced layer of super high-rise building | |
| CN110374236B (en) | Integral lifting construction method for aluminum plate curtain wall of ultra-large hyperbolic integrated unit | |
| CN113356597A (en) | Lifting process of large-span net rack and truss combined roof | |
| CN101372865A (en) | Stay suspender multispan beam structure highly hollow-out formwork system and construction method | |
| CN101446075B (en) | Synchronous vertical swing lift construction method for double inclination arc tower | |
| CN113047447B (en) | Split-level steel structure building semi-reverse construction method | |
| CN104775564A (en) | Unsupported installation method for bidirectional tilting great-section box latticed columns | |
| CN115467421B (en) | Hoisting construction method for complex large-span steel roof | |
| CN114892873B (en) | Inclined roof fish-bellied truss hoisting construction method | |
| CN109811665A (en) | The installation method of assembled heavy type steel corbel | |
| CN209798539U (en) | Bracket and pier | |
| CN216615511U (en) | Lifting equipment for mounting cross-river variable-section continuous steel box girder | |
| CN207714108U (en) | A kind of support system of the more arcading arched aqueducts of large span or bridge | |
| CN112096090B (en) | Large-span space pipe truss single-point support butt joint step-by-step unloading device and construction method | |
| CN104652828A (en) | Heavy-duty steel structure cast-steel joint high-altitude bulk construction method | |
| CN204311622U (en) | Saddle-shaped prestressed cable net | |
| CN206223465U (en) | A kind of large scale structure fatigue test machine host | |
| CN116181079A (en) | Integral lifting device and method for heavy steel truss and large-diameter aluminum alloy reticulated shell structure | |
| CN104863259A (en) | Upside-down construction method for large-span ultra-high signal-layer cylindrical architectural steel structure | |
| CN212294371U (en) | Steel girder assembling jig frame | |
| CN209323691U (en) | A kind of huge diagonal brace of overlength superelevation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |