CN111302228B - Hoisting method for hoisting large barrel by multiple masts based on wind condition - Google Patents
Hoisting method for hoisting large barrel by multiple masts based on wind condition Download PDFInfo
- Publication number
- CN111302228B CN111302228B CN202010335602.8A CN202010335602A CN111302228B CN 111302228 B CN111302228 B CN 111302228B CN 202010335602 A CN202010335602 A CN 202010335602A CN 111302228 B CN111302228 B CN 111302228B
- Authority
- CN
- China
- Prior art keywords
- mast
- hoisting
- lifting
- wind
- electric chain
- 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
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000000007 visual effect Effects 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003930 cognitive ability Effects 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/60—Derricks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Wind Motors (AREA)
Abstract
The invention belongs to a hoisting method for lifting a large barrel by multiple masts under the condition of wind, which comprises the following steps of 1), utilizing finite element analysis software to model and analyze the stress condition of the lifted barrel under the condition of the worst wind load, and simulating and calculating a mast load extreme value; step 2), arranging a mast with wind-resistant limiting characteristics; the masts are all provided with electric chain blocks, the lifting lugs are provided with tension sensors, and step 3) a visual model is created by using BIM; step 4), setting the pretightening force of the electric chain block sling, and after the electric chain block sling is lifted to a required height, synchronously stopping the operation of the electric chain block; and 5) circularly hoisting the other hoisted barrels until all the hoisted barrel assembly processes are completed after the hoisted barrels are installed, and comprehensively simulating the barrel hoisting process to ensure that the masts are stressed uniformly and hoisted synchronously, so that the multi-mast hoisting process is safer and more efficient.
Description
Technical Field
The invention relates to the technical field of engineering construction, in particular to a hoisting method for lifting a large barrel by multiple masts based on a windward condition.
Background
With the large-scale development of industrial projects, the manufacturing and installation engineering of large-scale cylinder equipment is increasing; the multi-mast lifting and upside-down mounting construction process has the advantages of simplicity and convenience in operation, high construction efficiency and the like, and is widely applied to the construction industry. The multi-mast lifting process belongs to a hyperstatic mode, when lifting stress analysis is carried out, a balanced load method is generally adopted to simplify calculation, but when a barrel is influenced by the overturning moment of wind load, the additional load shared by each mast is quite complex, and simplified calculation cannot be carried out any more; the weight structure state analysis, lifting point setting analysis, mast design calculation and check and the like in the traditional lifting scheme are extensive simplified modes, and the problem of large calculation value error often occurs, so that the phenomenon of excessive lifting auxiliary materials or safety accidents is caused. In addition, hoisting equipment used by each mast is a common electric chain block, the hoisting action is controlled manually, and the problems of asynchronous hoisting and uneven stress of each hoisting point are easily caused due to the limitation of subjective cognitive ability and difference of action flexibility of operators; based on the above safety hazards, there is an urgent need to solve such problems.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a hoisting method for hoisting a large barrel by multiple masts under the condition of wind.
The purpose of the invention is realized as follows: a hoisting method for lifting and hoisting a large barrel by multiple masts based on a windward condition comprises the following steps:
step 1), utilizing finite element analysis software to model and analyze the stress condition of the hoisted cylinder under the most unfavorable wind load condition, obtaining the weight of the hoisted cylinder, drafting the number of masts according to the stress condition, and simulating and calculating a mast load extreme value;
step 2), setting a mast with wind-resistant limiting characteristics according to the mast load extreme value; each mast is provided with an electric chain block, and a tension sensor is arranged at the position, connected with the electric chain block, below a lifting lug of each mast;
step 3), building a multi-mast lifting BIM visual model of the lifted cylinder body under the windward condition by using BIM, and dynamically simulating the lifting process;
step 4), setting the pretightening force of the mast, asynchronously operating all the electric chain blocks at the speed of 0.02-0.025m/min, and synchronously operating all the electric chain blocks at the speed of 0.10-0.125m/min when the pretightening force detected by the tension sensors is the same, and after the hoisted cylinder body is lifted to the required height, synchronously stopping the operation of the electric chain blocks;
and 5) after the hung cylinder is installed, descending a lifting hook of the electric chain block, and circularly hoisting the rest hung cylinders until all the hung cylinder assembly processes are completed.
Preferably, the tension sensor in the step 2) is connected with the PLC through a signal line, and all the electric chain blocks are connected to the PLC.
Preferably, the mast comprises a mast main body and a lifting lug, and the upper end of the mast main body is provided with a wind-resistant limiting device.
Preferably, anti-wind stop device is including keeping off wheel, support, guide bar, limiting plate, hollow shaft, closure plate, buffer spring, the hollow shaft welding is in mast main part upper end, and the limiting plate setting is at the hollow shaft middle part, and limiting plate upper portion is provided with the guiding hole, and the one end of guide bar runs through in the guiding hole, and the other end of guide bar is fixed on the support, and the closure plate setting is at the right-hand member of hollow shaft, and the closure plate passes through bolt and leg joint, and the right-hand member of hollow shaft is established to the left side cover of support, and the right side of support sets up and keeps off the wheel, and the buffer.
Preferably, the buffer spring is a circular compression spring.
Preferably, the pretightening force in the step 4) is 10% of the load when the crane is stably lifted.
The invention carries out stress analysis on a hung barrel body under the condition of wind based on a computer application technology, calculates a mast load extreme value, assists in arranging the number of mast groups and designs a mast with wind resistance; adopting a variable-frequency speed-regulating electric chain block; the hoisting process of the cylinder is comprehensively simulated, so that the stress balance and the lifting synchronization of each mast are ensured, and the multi-mast lifting process is safer and more efficient.
Drawings
FIG. 1 is a schematic view of the construction of a mast according to the present invention;
FIG. 2 is a schematic structural view of the wind-resistant limiting device of the present invention;
FIG. 3 is a schematic view of the structure of FIG. 2 from the direction A;
fig. 4 is a schematic diagram of a hoist control system of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In embodiment 1, as shown in fig. 1 to 4, in this embodiment, taking the alumina seed precipitation groove construction with a diameter of phi 14 × 34.7m as an example, a hoisting method for hoisting a large cylinder by multiple masts under a windward condition includes the following steps:
step 1), modeling and analyzing the stress condition of the hoisted cylinder under the most unfavorable wind load condition by utilizing finite element analysis software, obtaining the weight of the hoisted cylinder 10, alumina seed precipitation tank with the total weight of about 327 tons, removing a tank bottom plate and a flow baffle plate which do not need to be lifted and hoisted, wherein the maximum lifting weight is 268.5 tons, the maximum windward area is 485.8 square meters, the number of masts is determined according to the stress condition, and the extreme load value of the masts is simulated and calculated; selecting 22 groups of masts, and under the action of six-level wind speed allowed to be hoisted at the limit, the maximum bearing load of a single mast is 16.8 tons;
step 2), setting a mast with wind-resistant limiting characteristics according to the mast load extreme value; the mast comprises a mast main body 7, which comprises: mast, lifting lug 701, etc., as may be routinely selected by those skilled in the art. The upper end of the mast main body is provided with a wind-resistant limiting device. Wind-resistant stop device is including keeping off wheel 1, support 2, guide bar 3, limiting plate 4, hollow shaft 5, closure plate 12, buffer spring 6, hollow shaft 5 welding is in 7 upper ends of mast main part, and limiting plate 4 sets up at hollow shaft 5 middle part, and 4 upper portions of limiting plate are provided with the guiding hole, and the one end of guide bar 3 runs through in the guiding hole, and the other end of guide bar 3 is fixed on support 2, and the guide bar can be along the flexible removal of hollow shaft along with the support, ensures that the support does not take place to rotate. The jam plate 12 welds at the right-hand member of hollow shaft 5, and the jam plate 12 is in the same place through bolt and 2 polyphones of support, and 2 middle parts of support are provided with bedplate 11, and 11 center departments of bedplate are provided with the centre bore, and the diameter of centre bore is greater than the diameter that the diameter of bolt is less than the diameter of nut, and the removal of the support of can being convenient for prevents droing of support. The telescopic amount of the support can be adjusted through the screwing distance of the bolts, the blocking plate 12 facilitates connection of the bolts, the left side of the support 2 is sleeved at the right end of the tubular shaft 5, the right side of the support 2 is provided with the catch wheel 1, and the buffer spring 6 is sleeved on the outer side of the tubular shaft between the support 2 and the limiting plate 4. The buffer spring 6 is a round compression spring. The maximum wind load borne by each group of masts is 650Kg, so a circular compression spring with 800Kg resistance is selected. The purpose is to make the catch wheel and the inner wall of the lifted cylinder body always in a close contact state, thereby greatly reducing the deflection amplitude of the cylinder body 10; the support is sleeved outside the tubular shaft, and the catch wheel 1 is arranged on the support 2. The support 2 has a flexible telescopic function along the tubular shaft 5, and the telescopic amount is 20 mm.
Each mast is provided with an electric chain block 8, and the electric chain block 8 is a variable-frequency speed-regulating electric chain block with the rated lifting capacity of 20 tons. The electric chain block comprises a sling, a hook and other structures. A tension sensor 9 is arranged at the position of connecting an electric chain block below a lifting lug 701 of each mast, and the model of the tension sensor is BSS-20t of the tension sensor 9. The signal line can adopt wired connection or wireless connection, and all the electric chain blocks are connected to the PLC variable frequency controller; the PLC and the PLC variable frequency controller can be purchased and obtained, and the routine selection can be carried out by the technical personnel in the field.
Step 3), building a multi-mast lifting BIM visual model of the lifted cylinder body under the windward condition by using BIM, and dynamically simulating the lifting process; through the step, the problems which may occur can be simulated and solved, for example, dynamic simulation is carried out in the step, and the barrel is lifted and suspended when the barrel is suddenly subjected to wind load or the wind direction changes, because the overturning moment of the wind load breaks the load balancing state of the original mast group system, the correction and adjustment are carried out again through the PLC, the lifting operation is synchronized again within an allowable range, and the lifting action is stopped and an alarm is given when the critical value is exceeded; once an alarm signal appears, temporary supporting and reinforcing measures must be taken immediately to prevent the occurrence of overturning accidents;
step 4), setting the pretightening force of the electric chain block sling, wherein the pretightening force is 10% of the load during stable lifting; about 23.2 according to the maximum included angle between the sling and the mastoCalculating to obtain the maximum hoisting load of the sling to be 18.3t, setting the pretightening force of the sling to be 1.83t, controlling the electric chain block to asynchronously operate all the electric chain blocks at the speed of 0.02m/min by the PLC variable frequency controller, controlling the electric chain block to synchronously lift the electric chain block at the speed of 0.125m/min by the PLC variable frequency controller when the pretightening force detected by the tension sensor is the same, and controlling the electric chain block to synchronously stop operating after the electric chain block is lifted to the required height;
and 5) after the hung cylinder is installed, descending a lifting hook of the electric chain block, and circularly hoisting the rest hung cylinders until all the hung cylinder assembly processes are completed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. A hoisting method for lifting and hoisting a large barrel by multiple masts based on a windward condition is characterized by comprising the following steps:
step 1), utilizing finite element analysis software to model and analyze the stress condition of the hoisted cylinder under the most unfavorable wind load condition, obtaining the weight of the hoisted cylinder, drafting the number of masts according to the stress condition, and simulating and calculating a mast load extreme value;
step 2), setting a mast with wind-resistant limiting characteristics according to the mast load extreme value; each mast is provided with an electric chain block, and a tension sensor is arranged at the position, connected with the electric chain block, below a lifting lug of each mast;
step 3), building a multi-mast lifting BIM visual model of the lifted cylinder body under the windward condition by using BIM, and dynamically simulating the lifting process;
step 4), setting the pretightening force of the mast, asynchronously operating all the electric chain blocks at the speed of 0.02-0.025m/min, and synchronously operating all the electric chain blocks at the speed of 0.10-0.125m/min when the pretightening force detected by the tension sensors is the same, and after the hoisted cylinder body is lifted to the required height, synchronously stopping the operation of the electric chain blocks;
and 5) after the hung cylinder is installed, descending a lifting hook of the electric chain block, and circularly hoisting the rest hung cylinders until all the hung cylinder assembly processes are completed.
2. The hoisting method for lifting and hoisting the large-sized barrel by the multi-mast based on the wind condition as claimed in claim 1, wherein: and in the step 2), the tension sensor is connected with the PLC through a signal line, and all the electric chain blocks are connected to the PLC.
3. The hoisting method for lifting and hoisting the large-sized barrel by the multi-mast based on the wind condition as claimed in claim 1, wherein: the mast comprises a mast main body and a lifting lug, and the upper end part of the mast main body is provided with a wind-resistant limiting device.
4. The hoisting method for lifting and hoisting the large-sized barrel by the multi-mast based on the wind condition as claimed in claim 3, wherein: the wind-resistant limiting device comprises a blocking wheel, a support, a guide rod, a limiting plate, a tubular shaft, a blocking plate and a buffer spring, wherein the tubular shaft is welded at the upper end of the mast main body, the limiting plate is arranged at the middle part of the tubular shaft, the upper part of the limiting plate is provided with a guide hole, one end of the guide rod penetrates through the guide hole, the other end of the guide rod is fixed on the support, the blocking plate is arranged at the right end of the tubular shaft and connected with the support through a bolt, the left side of the support is sleeved at the right end of the tubular shaft, the right side of the support is provided with the blocking wheel.
5. The hoisting method for lifting and hoisting the large-sized barrel by the multi-mast based on the wind condition as claimed in claim 4, wherein: the buffer spring is a round compression-resistant spring.
6. The hoisting method for lifting and hoisting the large-sized barrel by the multi-mast based on the wind condition as claimed in claim 1, wherein: the pretightening force in the step 4) is 10% of the load when the crane is stably lifted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335602.8A CN111302228B (en) | 2020-04-25 | 2020-04-25 | Hoisting method for hoisting large barrel by multiple masts based on wind condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335602.8A CN111302228B (en) | 2020-04-25 | 2020-04-25 | Hoisting method for hoisting large barrel by multiple masts based on wind condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111302228A CN111302228A (en) | 2020-06-19 |
| CN111302228B true CN111302228B (en) | 2021-03-30 |
Family
ID=71156043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010335602.8A Active CN111302228B (en) | 2020-04-25 | 2020-04-25 | Hoisting method for hoisting large barrel by multiple masts based on wind condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111302228B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551369B (en) * | 2020-12-23 | 2024-10-15 | 中国化学工程第十三建设有限公司 | Working method for assembling large-diameter tower equipment by lifting type operation platform |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01278622A (en) * | 1988-04-28 | 1989-11-09 | Sumitomo Constr Mach Co Ltd | Control device of penetrating force of power and digging speed of excavator |
| JPH11314883A (en) * | 1998-05-07 | 1999-11-16 | Hitachi Constr Mach Co Ltd | Safety device of tower crain |
| CN101301981B (en) * | 2008-05-23 | 2010-06-02 | 中国石油化工集团公司 | Hoisting method |
| CN103161350A (en) * | 2013-03-19 | 2013-06-19 | 成军 | Large span heavy steel structure mast hoisting construction method |
| CN105936476A (en) * | 2016-04-15 | 2016-09-14 | 国网天津市电力公司 | Modification construction method for blades of wind power plant |
-
2020
- 2020-04-25 CN CN202010335602.8A patent/CN111302228B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111302228A (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201228206Y (en) | Self-made small-sized hoisting machine | |
| CN202358849U (en) | Small-size suspension crane | |
| CN107250029A (en) | Crane and for the method for the overload protection for monitoring such crane | |
| CN107207227A (en) | Crane and for the method for the overload protection for monitoring such crane | |
| CN103449298A (en) | Annular hanging beam component and method for hoisting thin-wall cylinder with large-diameter annular opening | |
| CN111302228B (en) | Hoisting method for hoisting large barrel by multiple masts based on wind condition | |
| CN109132837B (en) | Steel wire rope winding system capable of automatically adjusting balance of lifting appliance | |
| CN114314323A (en) | A kind of prefabricated component hanger and hoisting rectification method | |
| CN201334306Y (en) | Hoisting machine for upright post member | |
| CN109455642A (en) | Intelligent operation platform for detecting and overhauling large spherical tank | |
| CN108217480A (en) | Collison fence for bridge template peace tears boom hoisting open | |
| CN220098275U (en) | A circulator for material | |
| CN217148246U (en) | Large-tonnage steel reinforcement cage hoisting accessory | |
| CN201458516U (en) | Balance type lifting device | |
| CN109244946A (en) | A kind of electric integrated apparatus for examination and repair | |
| CN208440146U (en) | Anti-deformation hoisting support and hoisting system thereof | |
| CN106861882A (en) | The method that ball mill has bad luck lifting in building | |
| CN103084817B (en) | The installation method of industry cylindrical furnace radiating furnace tube | |
| CN216072839U (en) | Hoisting device for replacing primary equipment on door-shaped framework | |
| CN207209840U (en) | A kind of Multifunctional suspension bracket | |
| CN205367538U (en) | Swing crane and A cabinet frame thereof | |
| CN205226226U (en) | Large -scale gallows of taking a trial run of counter weight space adjustable | |
| CN215479268U (en) | Bridge crane fixed pulley wire rope goes out groove fault handling device | |
| CN216190465U (en) | Gantry crane rotary mechanism rotation type maintenance hoist device | |
| CN219567489U (en) | Auxiliary device for replacing and adjusting boiler suspender |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |