CN115626552B - A double-beam eccentric lifting method for hoisting a finishing mill unit - Google Patents
A double-beam eccentric lifting method for hoisting a finishing mill unit Download PDFInfo
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- CN115626552B CN115626552B CN202211214719.6A CN202211214719A CN115626552B CN 115626552 B CN115626552 B CN 115626552B CN 202211214719 A CN202211214719 A CN 202211214719A CN 115626552 B CN115626552 B CN 115626552B
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- frame
- double
- shoulder pole
- lifting
- rolling mill
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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
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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
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明是一种双梁式偏心抬吊法，包括已有的两台行车，一根双梁式扁担梁，还包括下述步骤：将轧机机架横躺在支撑钢凳上，保持机架与水平方向形成约10°倾斜摆放；将机架套入双梁式扁担梁，通过与H型钢固定牢固后，两台行车开始同步缓慢起升；当机架提升到预计高度后，将机架吊运到安装位置后缓慢就位；机架就位后，再对地脚螺栓按照力矩要求进行最终紧固，这时机架就安装完毕。本双梁式偏心抬吊法，相比传统的旋转平衡法需要大量的部件在现场组装、加固并且滑移过程复杂缓的缺陷而言，通过行车与扁担梁的精确设计和完美配合，将机架固定、翻身，就位，一气呵成；极大提高了吊装效率，同时双梁式扁担梁可以在今后类似工程重复使用，既经济又环保。
The present invention is a double-beam eccentric lifting method, including two existing cranes, a double-beam shoulder pole beam, and the following steps: laying the rolling mill frame horizontally on a supporting steel bench, keeping the frame tilted about 10° to the horizontal direction; inserting the frame into the double-beam shoulder pole beam, and after being firmly fixed with the H-shaped steel, the two cranes begin to lift slowly and synchronously; when the frame is lifted to the expected height, the frame is hoisted to the installation position and slowly put into place; after the frame is in place, the anchor bolts are finally tightened according to the torque requirements, and the frame is installed. Compared with the traditional rotation balancing method, which requires a large number of components to be assembled and reinforced on site and has a complex and slow sliding process, the double-beam eccentric lifting method can fix, turn over, and put the frame into place in one go through the precise design and perfect coordination of the crane and the shoulder pole beam; it greatly improves the lifting efficiency, and the double-beam shoulder pole beam can be reused in similar projects in the future, which is both economical and environmentally friendly.
Description
Technical Field
The invention relates to the technical field of installation of electromechanical equipment, in particular to a double-beam type eccentric lifting method for lifting a finishing mill unit.
Background
In the metallurgical engineering project, the equipment installation of the rolling production line adopts closed construction, because the weight of a rolling mill frame is overweight, the appearance volume is overlarge, the lifting capacity of a single crane in a factory building can not meet the lifting requirement of the rolling mill frame, in the implementation process of installing the rolling mill frame by adopting a traditional rotary balance method, the lifting (descending) stroke is also increased along with the large appearance size of the equipment, the stability of the frame is found to be difficult to control in the lifting and descending processes, and when the lifting amplitude is larger, the stability is worse, and potential safety hazards and other adverse factors exist. Because the rotary balance method has complex process, needs more matched assemblies, needs longer assembly time in the earlier stage preparation and is very time-consuming and labor-consuming.
Disclosure of Invention
In order to solve the defects that the conventional rotary balance method is complicated in early assembly, the stability is difficult to control and certain potential safety hazards exist in the use process, the method is provided for installing the rolling mill frame by adopting a set of double-beam type shoulder pole beam synchronous lifting method in a matched manner for two traveling cranes of a main rolling span in a workshop, so that the working efficiency of equipment installation is improved, and the labor intensity and the safety risk of operators are reduced.
In order to achieve the above object, the present invention is achieved by:
a double-beam type eccentric lifting method for lifting a finishing mill set comprises two existing travelling cranes (No. 1 and No. 2) and a double-beam type shoulder pole beam (No. 3). The double-beam type shoulder pole beam (3#) comprises two box beams (5#, 6#) which are symmetrically arranged, lifting lugs (7#) which are positioned at two ends of the two box beams (5#, 6#), bolts (8#) which are positioned at two ends of the two box beams (5#, 6#), H-shaped short cross beams (9#) with two ends respectively connected with the two box beams (5#, 6#) and connecting bolts (10#), and further comprises the following steps:
Step 1, confirming the distance between a 1# traveling crane and a 2# traveling crane, wherein the distance between traveling cranes must meet the installation requirement of the gear opening size between lifting lugs (7#) at two ends of a shoulder pole beam;
step 2, carrying out unloading work on a rolling mill frame through two travelling cranes (1#, 2#) matched with a balance beam;
Step 3, horizontally laying the rolling mill stand on 6 horizontally arranged supporting steel stools, and placing the stand in a state of forming an inclination of about 10 degrees with the horizontal direction;
step 4, splicing and assembling a double-beam type shoulder pole beam (3#) on the ground, and preparing auxiliary parts for hoisting;
step 5, the rolling mill frame is padded by steel stools from the middle three positions, the steel stools are distributed on two sides of a frame window, sleepers are paved on the steel stools, and one sleeper is padded on the top of the frame, so that an included angle of about 10 degrees is formed when the frame is placed on the horizontal plane of the top plate;
And 6, calculating the eccentricity of the frames, namely, because the finishing mill group is in a multi-set continuous rolling mode, the rolling mill frames have a certain center distance, if all the frames are hoisted by adopting a method of being fixed in the middle of the double-beam type shoulder pole beam, when the second group of frames are hoisted, the second group of frames cannot be in place because the size from the center of the frames to the end parts of the shoulder pole beams is larger than the distance between the frames, and the shoulder pole beams collide with the frames which are installed in place. In order to meet the installation of a plurality of sets of frames, eccentric hoisting is needed and the eccentric quantity is calculated, the hoisting after the eccentricity is needed to ensure that a double-beam shoulder pole beam (3#) is not interfered with the frames when the lower frame is hoisted, so that the eccentric quantity is needed to be calculated according to the number of the frames, the width of the frames and the height of the frames, and the minimum space requirement when the next several frames are hoisted is met;
step 7, sleeving the frame into a double-beam type shoulder pole beam (3#), after the frame is firmly fixed with H-shaped steel, starting synchronous and slow lifting of two travelling cranes (1#, 2#), after the frame is in an upright state, determining the travelling crane braking performance and each connecting point to be safe and reliable, repeating the steps for two times, and finally, after confirming that the travelling cranes, the frame, the lifting appliance and each connecting point are all free of problems, synchronously lifting;
step 8, after the frame is lifted to the expected height, the two traveling vehicles are coordinated and consistent, the large vehicles run synchronously, and the frame is lifted to the installation position and then is slowly positioned;
and 9, after the frame is safely positioned, pre-fixing the frame through the anchor bolts, and after the frame is finally leveled and aligned, finally fastening the anchor bolts according to the moment requirement, and then finishing the installation of the frame.
The double-beam type eccentric lifting method provided by the invention fully utilizes the effective combination of the existing travelling crane and the shoulder pole beam in a factory workshop, adopts an economic, effective, safe and reliable lifting mode, and has better operability and higher safety compared with the defects that a large number of parts are required to be assembled and reinforced on site and the sliding process is complex and slow in the traditional rotary balancing method. The hoisting efficiency is greatly improved, and meanwhile, the double-beam type shoulder pole beam can be reused in similar projects in the future, so that the double-beam type shoulder pole beam is economical and environment-friendly.
Drawings
Fig. 1 is a schematic structural view of a double beam type shoulder pole beam.
Fig. 2 is a schematic diagram of rack placement in the present invention.
FIG. 3 shows a rolling mill according to the invention the hoisting state is indicated.
Detailed Description
The invention is further illustrated by the following specific examples.
The utility model provides a double-beam type eccentric lifting method for finish rolling mill unit hoist and mount, includes two existing driving (1 #, 2 #), still includes a double-beam type shoulder pole beam (3 #), as in FIG. 1, double-beam type shoulder pole beam (3 #) is including two case girders (5 #, 6 #), lug (7 #) at two case girders (5 #, 6 #) both ends that are located symmetrical setting, bolt (8 #) at two case girders (5 #, 6 #), both ends are connected H type short crossbeam (9 #) and connecting bolt (10 #) with two case girders (5 #, 6 #) respectively, still includes following steps:
Step 1, confirming the distance between a 1# traveling crane and a 2# traveling crane, wherein the distance between traveling cranes must meet the installation requirement of the gear opening size between lifting lugs (7#) at two ends of a shoulder pole beam;
step 2, carrying out unloading work on a rolling mill frame through two travelling cranes (1#, 2#) matched with a balance beam;
step 3, the rolling mill stand is horizontally laid on 6 horizontally arranged supporting steel stools, and the stand is kept to be placed in a 10-degree inclined state with the horizontal direction, as shown in fig. 2;
step 4, splicing and assembling a double-beam type shoulder pole beam (3#) on the ground, and preparing auxiliary parts for hoisting;
step 5, the rolling mill frame is padded by steel stools from the middle three positions, the steel stools are distributed on two sides of a frame window, sleepers are paved on the steel stools, and one sleeper is padded on the top of the frame, so that an included angle of about 10 degrees is formed when the frame is placed on the horizontal plane of the top plate;
step 6, calculating the eccentricity of the machine frame, namely, the eccentric hoisting must ensure that the double-beam shoulder pole beam (3#) does not interfere with the machine frame when the lower machine frame is hoisted, so that the eccentricity is calculated according to the number of the machine frames, the width and the height of the machine frame, and the minimum space requirement of the next machine frame during hoisting is met;
Step 7, sleeving the frame into a double-beam type shoulder pole beam (3#), after the frame is firmly fixed with H-shaped steel, as shown in fig. 3, starting synchronous and slow lifting of two travelling cranes (1#, 2#), after the frame is in an upright state, determining the travelling crane braking performance and each connecting point to be safe and reliable, repeating the process twice, and finally, after confirming that the travelling cranes, the frame, the lifting appliance and each connecting point are all free of problems, synchronously lifting;
step 8, after the frame is lifted to the expected height, the two traveling vehicles are coordinated and consistent, the large vehicles run synchronously, and the frame is lifted to the installation position and then is slowly positioned;
and 9, after the frame is safely positioned, pre-fixing the frame through the anchor bolts, and after the frame is finally leveled and aligned, finally fastening the anchor bolts according to the moment requirement, and then finishing the installation of the frame.
Claims (1)
1. The double-beam type eccentric lifting method for the lifting of the finish rolling mill unit comprises two existing travelling cranes (1 # and 2# and is characterized by further comprising a double-beam type shoulder pole beam (3 #), wherein the double-beam type shoulder pole beam (3 #) comprises two box girders (5 # and 6 #) which are symmetrically arranged, lifting lugs (7 #) positioned at two ends of the two box girders (5 # and 6 #), bolts (8 # positioned at two ends of the two box girders (5 # and 6 #), H-type short cross beams (9 #) with two ends connected with the two box girders (5 # and 6 #) respectively and connecting bolts (10 #), and the method further comprises the following steps:
Step 1, confirming the distance between a 1# traveling crane and a 2# traveling crane, wherein the distance between traveling cranes must meet the installation requirement of the gear opening size between lifting lugs (7#) at two ends of a shoulder pole beam;
step 2, carrying out unloading work on a rolling mill frame through two travelling cranes (1#, 2#) matched with a balance beam;
Step 3, horizontally laying the rolling mill stand on 6 horizontally arranged supporting steel stools, and placing the stand in a state of forming an inclination of about 10 degrees with the horizontal direction;
step 4, splicing and assembling a double-beam type shoulder pole beam (3#) on the ground, and preparing auxiliary parts for hoisting;
step 5, the rolling mill frame is padded by steel stools from the middle three positions, the steel stools are distributed on two sides of a frame window, sleepers are paved on the steel stools, and one sleeper is padded on the top of the frame, so that an included angle of about 10 degrees is formed when the frame is placed on the horizontal plane of the top plate;
step 6, calculating the eccentricity of the machine frame, namely, the eccentric hoisting must ensure that the double-beam shoulder pole beam (3#) does not interfere with the machine frame when the lower machine frame is hoisted, so that the eccentricity is calculated according to the number of the machine frames, the width and the height of the machine frame, and the minimum space requirement of the next machine frame during hoisting is met;
step 7, sleeving the frame into a double-beam type shoulder pole beam (3#), after the frame is firmly fixed with H-shaped steel, starting synchronous and slow lifting of two travelling cranes (1#, 2#), after the frame is in an upright state, determining the travelling crane braking performance and each connecting point to be safe and reliable, repeating the steps for two times, and finally, after confirming that the travelling cranes, the frame, the lifting appliance and each connecting point are all free of problems, synchronously lifting;
step 8, after the frame is lifted to the expected height, the two traveling vehicles are coordinated and consistent, the large vehicles run synchronously, and the frame is lifted to the installation position and then is slowly positioned;
and 9, after the frame is safely positioned, pre-fixing the frame through the anchor bolts, and after the frame is finally leveled and aligned, finally fastening the anchor bolts according to the moment requirement, and then finishing the installation of the frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211214719.6A CN115626552B (en) | 2022-09-30 | 2022-09-30 | A double-beam eccentric lifting method for hoisting a finishing mill unit |
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| CN202211214719.6A CN115626552B (en) | 2022-09-30 | 2022-09-30 | A double-beam eccentric lifting method for hoisting a finishing mill unit |
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| CN115626552A CN115626552A (en) | 2023-01-20 |
| CN115626552B true CN115626552B (en) | 2025-07-11 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555831A (en) * | 2013-10-16 | 2015-04-29 | 中国二十冶集团有限公司 | Reserved hoisting method for base of large rolling mill stand |
| CN205367449U (en) * | 2016-01-15 | 2016-07-06 | 中国铁建大桥工程局集团有限公司 | It forces balance hanger to be suitable for eccentric component |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3255063B2 (en) * | 1997-01-21 | 2002-02-12 | 株式会社大林組 | Crane lifting device and unloading method |
| JP3227483U (en) * | 2020-05-29 | 2020-08-27 | 日本建設工業株式会社 | Loading equipment |
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- 2022-09-30 CN CN202211214719.6A patent/CN115626552B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555831A (en) * | 2013-10-16 | 2015-04-29 | 中国二十冶集团有限公司 | Reserved hoisting method for base of large rolling mill stand |
| CN205367449U (en) * | 2016-01-15 | 2016-07-06 | 中国铁建大桥工程局集团有限公司 | It forces balance hanger to be suitable for eccentric component |
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| CN115626552A (en) | 2023-01-20 |
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