CN113896089B - Construction method of oversized blast furnace - Google Patents
Construction method of oversized blast furnace Download PDFInfo
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- CN113896089B CN113896089B CN202111255652.6A CN202111255652A CN113896089B CN 113896089 B CN113896089 B CN 113896089B CN 202111255652 A CN202111255652 A CN 202111255652A CN 113896089 B CN113896089 B CN 113896089B
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 73
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims description 60
- 230000003068 static effect Effects 0.000 claims description 25
- 230000009471 action Effects 0.000 claims description 16
- 239000003973 paint Substances 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000011179 visual inspection Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 4
- 241001669679 Eleotris Species 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/48—Automatic control of crane drives for producing a single or repeated working cycle; Programme control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Automation & Control Theory (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention relates to a construction method of an oversized blast furnace, which comprises the following steps: a step of installing a gantry crane, in which the gantry crane is installed at one side of the blast furnace construction position; debugging and hoisting the mounted gantry crane, wherein the debugging is completed to test hoisting, and whether the rigidity strength of the main stressed structure of the crane meets the requirement is checked; a step of building sub-modules of the blast furnace, which is to build and construct a furnace shell and a steel structure sub-module of the blast furnace; and hoisting and installing the blast furnace sub-modules, namely hoisting the built blast furnace modules to an installation position sequentially by using a gantry crane, and splicing and installing the blast furnace sub-modules. According to the construction method of the oversized blast furnace, provided by the invention, the gantry crane is arranged on one side of the construction position of the blast furnace, so that the hoisting operation site can be flexibly changed, the influence of site conditions is small, the single maximum hoisting weight is large, the blast furnace can be hoisted integrally after the ground sub-module is constructed, the overhead work load is reduced, and the working efficiency and the safety in operation are improved.
Description
Technical Field
The invention relates to the technical field of metallurgical equipment installation, in particular to a construction method of an oversized blast furnace.
Background
With the national integration of the domestic steel industry, each large steel factory in the country eliminates the post-production energy, stops the aging equipment and the small blast furnace, and creates a very large blast furnace in a dispute so as to improve the productivity and the efficiency of steel smelting.
For hoisting operation in the new construction process of an oversized blast furnace, the traditional mode is to use a heavy tower crane, and when the mode is constructed, the heavy tower crane cannot move, so that the operation range is smaller, and the construction is not flexible enough. The maximum hoisting weight of the heavy tower crane is small, so that high-altitude operation is more when an oversized blast furnace is built, the safety risk is increased, and the construction efficiency of the blast furnace is low.
Disclosure of Invention
Accordingly, the present invention is directed to a method for constructing an oversized blast furnace, which solves the problems of the prior art.
According to the present invention, there is provided a method of constructing an oversized blast furnace, comprising the steps of:
a step of installing a gantry crane, in which the gantry crane is installed at one side of the blast furnace construction position;
debugging and hoisting the mounted gantry crane, wherein the debugging is completed to test hoisting, and whether the rigidity strength of the main stressed structure of the crane meets the requirement is checked;
a step of building sub-modules of the blast furnace, which is to build and construct a furnace shell and a steel structure sub-module of the blast furnace;
and hoisting and installing the blast furnace sub-modules, namely hoisting the built blast furnace modules to an installation position sequentially by using a gantry crane, and splicing and installing the blast furnace sub-modules.
Preferably, the gantry crane installation step includes:
s11, paving a track;
s12, mounting the portal frame on a track;
s13, mounting a machine on the top of the portal;
s14, installing a main arm and an auxiliary arm of the gantry crane;
and S15, installing a power device and an electrical control system of the gantry crane.
Preferably, in the step S11, the number of tracks of the gantry crane is two, each group of tracks includes two monorails, a ballast layer is laid under each group of tracks, a plurality of sleepers are laid on the ballast layer, and the two monorails of each group of tracks are fixed on the sleepers;
when the two groups of tracks are installed, the central line of one group of tracks is taken as a reference and combined with the track gauge to determine the position of the central line of the other group of tracks.
Preferably, when the portal frame and the machine platform are installed, one automobile crane and one crawler crane are used for double-point hoisting.
Preferably, in the step S14, when the main arm and the auxiliary arm of the gantry crane are mounted, one end of the main arm is connected to the machine, a bracket having the same height as the machine is provided on one side of the gantry, the other end of the main arm is supported on the bracket, and then the auxiliary arm is mounted on the main arm.
Preferably, the step of debugging and hoisting the gantry crane further comprises:
the step of no-load test, which is to test the action of each mechanism of the gantry crane, check the action correctness of each electric control loop and the action accuracy of each mechanism, and adjust each safety limiting device;
a static load test step, namely respectively carrying out a 100% static load test and a 125% static load test according to test running requirements so as to verify the strength, the rigidity and the braking reliability of each part of steel structure and mechanism and the static stability of the whole machine;
a dynamic load test step, firstly lifting rated load corresponding to each amplitude, enabling each mechanism to run in turn, measuring data such as power, speed, motor temperature rise and the like of each mechanism, and verifying dynamic stability of the crane; and then lifting the test load which corresponds to 1.1 times of rated load of each amplitude, so that each mechanism runs in turn.
Preferably, the static load test step further comprises:
firstly, loading 1 time of rated load for 100% static load test, and suspending for ten minutes after loading by 100-200 mm from the ground without other actions except for a slow gear for lifting a car;
after the 100% static load test is completed, the crane is loaded to 1.25 times of the rated load without impact to carry out 125% static load test, and is suspended for ten minutes, so that the main steel structural member of the crane is checked, permanent deformation cannot be caused, the detachment phenomenon cannot occur between the rotating part and the supporting roller, cracks, paint peeling or other damages cannot be visually checked, looseness or damage cannot be caused at the connecting position, and static stability of the whole crane is checked.
Preferably, the dynamic load test step further includes:
the lifting mechanism is tested, the lifting mechanism is lifted and lowered for three times at a stable working speed, the lifting mechanism is required to be braked stably, the falling braking cannot be performed, and the overload test is performed in one cycle;
the test of the slewing mechanism, wherein the slewing mechanism rotates 360 degrees in the clockwise direction and the anticlockwise direction at the rated slewing speed, the starting braking is required to be stable, the starting braking time is longer than 5 seconds, and the sudden reverse action is not required;
the running mechanism is used for testing, the running mechanism lifts the test load to move back and forth for three times respectively from 400mm to 600mm above the ground, and the overload test is performed in one cycle;
and after the lifting mechanism test, the rotating mechanism test and the running mechanism test are completed, carrying out linkage tests of the lifting mechanism and the rotating mechanism or linkage tests of the lifting mechanism and the running mechanism for three times respectively.
Preferably, in the step of constructing the blast furnace sub-modules, the furnace shell and the steel structure of the blast furnace are divided into a plurality of modules according to the rated lifting weight of the gantry crane, and the weight of each module is not higher than the rated lifting weight of the gantry crane.
Preferably, when the blast furnace shell module is lifted, four lifting lugs are uniformly arranged on the outer wall of the uppermost furnace shell of the blast furnace shell module along the circumferential direction of the furnace shell, four lifting slings with equal length are connected at the suspension points of the gantry crane, and the lower ends of the lifting slings are respectively connected to the four lifting lugs for lifting.
According to the construction method of the oversized blast furnace, provided by the invention, the gantry crane is arranged on one side of the construction position of the blast furnace, so that the hoisting operation site can be flexibly changed, the influence of site conditions is small, the single maximum hoisting weight is large, the blast furnace can be hoisted integrally after the ground sub-module is constructed, the overhead work load is reduced, and the working efficiency and the safety in operation are improved.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 shows a flow chart of a method of constructing an oversized blast furnace according to an embodiment of the present invention.
Fig. 2 shows a schematic structural view of a gantry crane in an oversized blast furnace construction method according to an embodiment of the present invention.
In the figure: the railway system comprises a track 1, a portal 2, a machine table 3, a main arm 4, an auxiliary arm 5, a railway ballast layer 6, a sleeper 7 and a bracket 8.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts. For clarity, the various features of the drawings are not drawn to scale.
Referring to fig. 1, the present invention provides a construction method of an oversized blast furnace, which specifically includes the steps of:
and a gantry crane installation step S1, wherein the gantry crane is installed on one side of the blast furnace construction position.
Specifically, the portal crane installation step includes:
step S11, paving the track 1. The track 1 of gantry crane is two sets of, and every group track includes two monorails, and the railway ballast layer 6 is laid to the below of every group track, and a plurality of sleeper 7 is laid on railway ballast layer 6, and two monorails of every group track are fixed on sleeper 7. When the two groups of tracks are installed, the central line of one group of tracks is taken as a reference, and the central line of the other group of tracks is determined by combining the track gauges, so that the relative error can be controlled within the allowable deviation range in a unified reference mode. After the track is installed, checking and accepting are carried out, and the track acceptance standard is implemented according to the following table requirements:
step S12, mounting the portal frame 2 on the track. When the portal frame 2 is installed, a truck crane and a crawler crane are used for double-point hoisting, the lifting weight required by the truck crane and the crawler crane is calculated according to the dead weight and the hoisting point position of the portal frame 2 before hoisting, the lifting weight is not more than 80% of the rated hoisting weight of the truck crane and the crawler crane, and the hoisting safety is ensured. The truck crane and the crawler crane are respectively arranged on two sides of the two groups of tracks, the boom is rotated to be close to the vertical state with the tracks after the portal is lifted, ground staff commands the crawler crane to move along the direction perpendicular to the tracks according to the relative positions of the rollers at the bottom of the portal and the tracks, so that the rollers are aligned with the tracks, and then the truck crane and the crawler crane simultaneously descend the portal, so that the portal is accurately arranged on the tracks.
And S13, mounting the machine table 3 on the top of the portal frame. When the platform 3 is installed, a truck crane and a crawler crane are used for double-point hoisting, the lifting weight required by the truck crane and the crawler crane is calculated according to the dead weight and the hoisting point position of the platform 3 before hoisting, the lifting weight is not more than 80% of the rated lifting weight of the truck crane and the crawler crane, and the hoisting safety is ensured. The method comprises the steps that an automobile crane and a crawler crane are respectively arranged on two sides of two groups of tracks, a rear arm frame of the machine platform is lifted to be in a state of being close to the tracks, the machine platform is connected with the door frame through a large slewing bearing, the slewing bearing is connected to the top of the door frame before the machine platform is lifted, when the machine platform is installed, ground staff commands the crawler crane to move along the direction perpendicular to the tracks according to the relative position of the lifted machine platform and the slewing bearing, so that mounting holes on the machine platform are aligned with mounting holes of the slewing bearing, then the automobile crane and the crawler crane simultaneously descend the door frame, the door frame is accurately installed on the slewing bearing at the top of the door frame, and then the machine platform is connected and fixed with the slewing bearing through bolts.
And S14, mounting a main arm and an auxiliary arm of the gantry crane. When the main arm and the auxiliary arm of the gantry crane are installed, one end of the main arm 4 is connected to the machine, a bracket 8 with the same height as the machine is arranged on one side of the portal frame, as shown in fig. 2, the other end of the main arm 4 is supported on the bracket 8, and then the auxiliary arm 5 is installed on the main arm 4. The main arm 4 can be installed by using one truck crane and one crawler crane for double-point hoisting, the auxiliary arm 5 has small dead weight, and can be installed by using two crawler cranes for double-point hoisting. And after the installation of the main arm and the auxiliary arm is completed, other auxiliary structures on the main arm and the auxiliary arm are installed at the same time.
And S15, installing a power device and an electrical control system of the gantry crane. After the main steel structural members of the gantry crane are installed, a power device and an electric control system of the gantry crane are installed, and the power device and the electric control system specifically comprise a power box, a driving motor, a speed reducer, a winch, an electric control cabinet and the like.
And step S2, debugging and hoisting test of the gantry crane, namely debugging the mounted gantry crane, hoisting test after the debugging is completed, and checking whether the rigidity strength of the main stressed structure of the crane meets the requirement.
Specifically, the debugging and hoisting test steps of the gantry crane comprise:
and a no-load test step, wherein the actions of all mechanisms of the gantry crane are tested respectively, the action correctness of all electric control loops and the action accuracy of all mechanisms are checked, and all safety limiting devices are adjusted.
And a static load test step, namely respectively carrying out a 100% static load test and a 125% static load test according to test running requirements so as to verify the strength, the rigidity and the braking reliability of each part of steel structure and mechanism and the static stability of the whole machine. The test method is specifically as follows: firstly, loading 1 time of rated load for 100% static load test, and suspending for ten minutes after loading by 100-200 mm from the ground without other actions except for a slow gear for lifting a car; after the 100% static load test is completed, the crane is loaded to 1.25 times of the rated load without impact to carry out 125% static load test, and is suspended for ten minutes, so that the main steel structural member of the crane is checked, permanent deformation cannot be caused, the detachment phenomenon cannot occur between the rotating part and the supporting roller, cracks, paint peeling or other damages cannot be visually checked, looseness or damage cannot be caused at the connecting position, and static stability of the whole crane is checked.
A dynamic load test step, firstly lifting rated load corresponding to each amplitude, enabling each mechanism to run in turn, measuring data such as power, speed, motor temperature rise and the like of each mechanism, and verifying dynamic stability of the crane; and then lifting the test load which is 1.1 times of the rated load of each amplitude, and carrying out overload dynamic load test, so that each mechanism runs in turn, and the speed and the motor temperature rise are not detected during the overload dynamic load test. The test method is specifically as follows: the lifting mechanism is tested, the lifting mechanism is lifted and lowered for three times at a stable working speed, the lifting mechanism is required to be braked stably, the falling braking cannot be performed, and the overload test is performed in one cycle; the test of the slewing mechanism, wherein the slewing mechanism rotates 360 degrees in the clockwise direction and the anticlockwise direction at the rated slewing speed, the starting braking is required to be stable, the starting braking time is longer than 5 seconds, and the sudden reverse action is not required; the running mechanism is used for testing, the running mechanism lifts the test load to move back and forth for three times respectively from 400mm to 600mm above the ground, and the overload test is performed in one cycle; and after the lifting mechanism test, the rotating mechanism test and the running mechanism test are completed, carrying out linkage tests of the lifting mechanism and the rotating mechanism or linkage tests of the lifting mechanism and the running mechanism for three times respectively.
And S3, constructing a blast furnace sub-module, namely constructing a furnace shell and a steel structure sub-module of the blast furnace.
In this step, the furnace shell and the steel structure of the blast furnace are divided into a plurality of modules according to the rated lifting weight of the gantry crane, and the weight of each module is not higher than the rated lifting weight of the gantry crane. Specifically, the blast furnace shell is divided into a plurality of modules, each module comprises a plurality of circles of furnace shells, the plurality of modules can be simultaneously constructed on the ground, and the steel structure can be constructed as one module or a plurality of modules according to the weight. The split-module construction can be used for assembling and welding operation on the ground, a plurality of modules can be constructed simultaneously, the risk of high-altitude operation is reduced, and the construction efficiency of the blast furnace construction is improved.
And S4, hoisting and installing the blast furnace sub-modules, namely hoisting the built blast furnace modules to an installation position sequentially by using a gantry crane, and splicing and installing the blast furnace modules.
In the step, when the blast furnace shell module is lifted, four lifting lugs are uniformly arranged on the outer wall of the uppermost furnace shell of the blast furnace shell module along the circumferential direction of the furnace shell, four lifting slings with equal length are connected at the suspension points of the gantry crane, and the lower ends of the lifting slings are respectively connected to the four lifting lugs for lifting.
In order to prevent the deformation of the furnace shell caused by the horizontal force action of the uppermost Fang Luke of the blast furnace shell module during hoisting, a cross-shaped support is arranged in the furnace shell, the end part of the cross-shaped support is abutted against the inner wall of the furnace shell and corresponds to the position of the lifting lug, the cross-shaped support can be made of H-shaped steel or channel steel, the end part of the cross-shaped support can be connected with the inner wall of the furnace shell in a spot welding mode, and the furnace shell is convenient to detach after the hoisting is finished.
In summary, according to the oversized blast furnace construction method provided by the invention, the gantry crane is arranged at one side of the blast furnace construction position, so that the hoisting operation site can be flexibly changed, the influence of site conditions is small, the single maximum hoisting weight is large, the blast furnace can be hoisted integrally after the ground sub-module is constructed, the overhead workload is reduced, and the working efficiency and the safety in operation are improved.
It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present invention and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (1)
1. The construction method of the oversized blast furnace is characterized by comprising the following steps of:
a step of installing a gantry crane, in which the gantry crane is installed at one side of the blast furnace construction position;
debugging and hoisting the mounted gantry crane, wherein the debugging is completed to test hoisting, and whether the rigidity strength of the main stressed structure of the crane meets the requirement is checked;
a step of building sub-modules of the blast furnace, which is to build and construct a furnace shell and a steel structure sub-module of the blast furnace;
hoisting and installing the blast furnace sub-modules, namely hoisting the built blast furnace modules to an installation position sequentially by using a gantry crane, and splicing and installing the blast furnace modules;
wherein,,
the portal crane installation step comprises the following steps: s11, paving a track; the two groups of tracks of the gantry crane are two groups, each group of tracks comprises two monorails, a railway ballast layer is paved below each group of tracks, a plurality of sleepers are paved on the railway ballast layer, and the two monorails of each group of tracks are fixed on the sleepers; when the two groups of rails are installed, the central line of one group of rails is used as a reference to be combined with the track gauge to determine the position of the central line of the other group of rails; s12, mounting the portal frame on a track; s13, mounting a machine on the top of the portal; s14, installing a main arm and an auxiliary arm of the gantry crane; when the main arm and the auxiliary arm of the gantry crane are installed, one end of the main arm is connected to the machine table, a bracket with the same height as the machine table is arranged on one side of the portal frame, the other end of the main arm is supported on the bracket, and then the auxiliary arm is installed on the main arm; s15, installing a power device and an electrical control system of the gantry crane;
when the portal frame and the machine table are installed, a truck crane and a crawler crane are used for carrying out double-point hoisting;
the step of debugging and testing the gantry crane further comprises the following steps:
the step of no-load test, which is to test the action of each mechanism of the gantry crane, check the action correctness of each electric control loop and the action accuracy of each mechanism, and adjust each safety limiting device;
a static load test step, namely respectively carrying out a 100% static load test and a 125% static load test according to test running requirements so as to verify the strength, the rigidity and the braking reliability of each part of steel structure and mechanism and the static stability of the whole machine; the steps further include: firstly, loading 1 time of rated load for 100% static load test, and suspending for ten minutes from 100mm to 200mm above the ground after loading, wherein no other action is performed except for a slow gear for lifting a car; after the 100% static load test is finished, loading 1.25 times of the rated load for 125% static load test without impact, suspending for ten minutes, checking that the main steel structural member of the crane cannot be permanently deformed, checking that no crack, paint peeling or other damage exists in visual inspection, loosening or damage cannot exist at the joint, and checking that the whole machine is static and stable;
a dynamic load test step, firstly lifting rated load corresponding to each amplitude, enabling each mechanism to run in turn, measuring power, speed and motor temperature rise data of each mechanism, and verifying dynamic stability of the crane; then lifting the test load which is 1.1 times of the rated load corresponding to each amplitude, so that each mechanism runs in turn; the steps further include: the lifting mechanism is tested, the lifting mechanism is lifted and lowered for three times at a stable working speed, the lifting mechanism is required to be braked stably, the falling braking cannot be performed, and the overload test is performed in one cycle; the test of the slewing mechanism, wherein the slewing mechanism rotates 360 degrees in the clockwise direction and the anticlockwise direction at the rated slewing speed, the starting braking is required to be stable, the starting braking time is longer than 5 seconds, and the sudden reverse action is not required; the running mechanism is used for testing, the running mechanism is used for lifting the test load to move back and forth for three times from 400mm to 600mm above the ground, and the overload test is performed in one cycle; after the lifting mechanism test, the rotating mechanism test and the running mechanism test are completed, the linkage test of the lifting mechanism and the rotating mechanism is carried out, or the linkage test of the lifting mechanism and the running mechanism is carried out three times respectively;
in the step of building the blast furnace sub-modules, according to the rated lifting weight of the gantry crane, a furnace shell and a steel structure of the blast furnace are divided into a plurality of modules, and the weight of each module is not higher than the rated lifting weight of the gantry crane; when the blast furnace shell module is lifted, four lifting lugs are uniformly arranged on the outer wall of the uppermost furnace shell of the blast furnace shell module along the circumferential direction of the furnace shell, four slings with equal length are connected at the suspension points of the gantry crane, and the lower ends of the slings are respectively connected to the four lifting lugs for lifting.
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| CN1272552A (en) * | 1999-04-30 | 2000-11-08 | 川崎制铁株式会社 | Method for reconstructing and building blast furnace in short time and its equipment |
| CN104709813A (en) * | 2013-12-13 | 2015-06-17 | 中国二冶集团有限公司 | Method for mounting blast furnace framework structure by utilizing transverse hoisting beam |
| JP2017178502A (en) * | 2016-03-29 | 2017-10-05 | Ｉｈｉ運搬機械株式会社 | Crane overload prevention system and structure construction method using crane overload prevention system |
| CN105645278A (en) * | 2016-03-31 | 2016-06-08 | 中冶建工集团有限公司 | Method for mounting crawler cranes in side slope sites |
| CN112249899A (en) * | 2020-10-10 | 2021-01-22 | 山西省工业设备安装集团有限公司 | Special construction process for installing gantry of stacker-reclaimer |
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| CN113896089A (en) | 2022-01-07 |
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