CN111980865B - Shell ring hoisting method for reducing dislocation of precast concrete shell piece - Google Patents
Shell ring hoisting method for reducing dislocation of precast concrete shell piece Download PDFInfo
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- CN111980865B CN111980865B CN202010745183.5A CN202010745183A CN111980865B CN 111980865 B CN111980865 B CN 111980865B CN 202010745183 A CN202010745183 A CN 202010745183A CN 111980865 B CN111980865 B CN 111980865B
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- steel wire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a shell ring hoisting method for reducing the dislocation of a precast concrete shell piece, which is characterized by comprising the following steps of: the method comprises the following steps: step 1: hanging points (11) are embedded at two ends of the top of each cylinder piece (1) of the cylinder section; step 2: every two adjacent cylinder sheets (1) are connected through a first steel wire rope (2), and two ends of the first steel wire rope (2) are respectively connected to two adjacent hoisting points (11) of the two cylinder sheets (1); and step 3: every two first steel wire ropes (2) symmetrically distributed on the shell ring are connected through a second steel wire rope (3), and two ends of the second steel wire rope (3) are movably connected to the middle of the first steel wire ropes (2) respectively; and 4, step 4: the middle part of the second steel wire rope (3) is movably connected to a lifting hook (4) of the lifting equipment. The invention can reduce or avoid the dislocation among the cylinder sheets in the hoisting process of the segment prefabricated cylinder sections and ensure the hoisting flatness of the top surface of the cylinder section.
Description
Technical Field
The invention relates to a hoisting method of a concrete wind power tower barrel, in particular to a barrel section hoisting method for reducing the dislocation of a precast concrete barrel.
Background
Wind power generation is used as a clean energy technology and is widely applied to the three north area with good wind resources in China. As the development of the "three north" region is becoming saturated, wind power generation is progressing toward the inland region. Because the wind speed in the inland area is lower, and meanwhile, the power of the wind generating set is increased day by day, the diameter of a wind wheel is increased day by day, and the height of a tower barrel is also increased day by day, and at present, the height of the tower barrel of the land wind generating set in China reaches 120-160 m.
Along with the increase of a tower section of thick bamboo, traditional steel tower section of thick bamboo rigidity is lower, and a tower section of thick bamboo easily produces resonance and damages. The steel-concrete hybrid tower cylinder structure with the lower part adopting the concrete tower cylinder and the upper part adopting the steel tower cylinder is widely applied, the rigidity of the tower cylinder can be effectively improved, and the tower cylinder is ensured to avoid resonance. The concrete tower drum is generally prefabricated in sections and segments and is assembled and hoisted after being transported to the site.
The whole assembled shell ring is lifted by adopting lifting equipment, the lifting method in the prior art is shown in figure 1, a plurality of steel wire ropes 100 are connected to lifting points 11 at the top of a shell ring 200, the upper ends of the steel wire ropes are connected to a lifting hook 4 in a centralized manner, slight difference exists due to the fact that each steel wire rope cannot be adjusted to a uniform length, meanwhile, due to the fact that the pre-embedded positions of the lifting points on concrete shell pieces are asymmetric, in the lifting process, stress among the shell pieces on the shell ring is uneven, high-strength bolts used for connecting adjacent shell pieces bear large pressure, if the high-strength bolts among the shell pieces cannot resist shearing force generated by uneven stress of the shell pieces, dislocation of the shell pieces is generated, flatness of the surface of the shell ring does not accord with construction requirements, and safety accidents such as falling off are likely to occur in the lifting process.
Disclosure of Invention
The invention aims to provide a shell ring hoisting method for reducing the dislocation of precast concrete shell rings, which can reduce or avoid the dislocation among the shell rings in the process of hoisting the segmented precast shell rings and ensure the hoisting flatness of the top surfaces of the shell rings.
The invention is realized by the following steps:
a shell ring hoisting method for reducing the dislocation of a precast concrete shell piece comprises the following steps:
step 1: embedding lifting points at two ends of the top of each cylinder sheet of the cylinder section;
step 2: every two adjacent cylinder sheets are connected through a first steel wire rope, and two ends of the first steel wire rope are respectively connected to two adjacent hoisting points of the two cylinder sheets;
and step 3: every two first steel wire ropes symmetrically distributed on the shell ring are connected through a second steel wire rope, and two ends of the second steel wire rope are movably connected to the middle parts of the first steel wire ropes respectively;
and 4, step 4: the middle part of the second steel wire rope is movably connected to a lifting hook of the lifting equipment.
The number of the cylinder segments of the cylinder section is even, the first steel wire ropes are symmetrically arranged relative to the center of the top surface of the cylinder section, and the second steel wire ropes are symmetrically arranged relative to the center of the top surface of the cylinder section.
The number of the cylinder sheets is equivalent to that of the first steel wire ropes.
The number of the cylinder sheets is twice of that of the second steel wire ropes.
The length of each first steel wire rope is the same, and the length of each first steel wire rope is larger than the distance between the adjacent hoisting points of the two adjacent cylinder sheets.
The length of each second steel wire rope is the same.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the adjacent cylinder pieces are connected by the first steel wire ropes in pairs, and the first steel wire ropes are circularly and symmetrically arranged along the cylinder sections, so that the problem of uneven stress on the cylinder pieces caused by the length difference of the steel wire ropes connecting the lifting hooks and the cylinder pieces or the embedded position deviation of the lifting points can be avoided, thereby avoiding the dislocation between the cylinder pieces and ensuring the lifting stability and the top surface smoothness of the cylinder sections.
2. According to the invention, the first steel wire rope and the lifting hook are connected through the second steel wire rope, the lifting hook is indirectly connected with the barrel piece through two steel wire ropes, and the barrel piece can be prevented from moving in a staggered manner due to uneven length of the steel wire ropes or embedded and dislocated lifting points and the like through the symmetrical arrangement of the second steel wire rope, so that the lifting stability and the top surface smoothness of the barrel section are ensured.
According to the invention, the stress uniformity in the hoisting process is ensured through the movable connection and the symmetrical arrangement of the steel wire ropes, so that the dislocation among the cylinder sheets is effectively reduced or avoided in the hoisting process of the segmental prefabricated cylinder sections, the safety of the cylinder sections in the hoisting process is ensured, and the hoisting flatness of the top surfaces of the cylinder sections is also ensured.
Drawings
FIG. 1 is a schematic diagram of a prior art shell ring hoisting method;
FIG. 2 is a schematic view of the method of hoisting a shell ring for reducing the dislocation of precast concrete shell pieces according to the present invention;
FIG. 3 is a schematic view of a hoisting method in embodiment 1 of the present invention;
fig. 4 is a schematic view of a hoisting method in embodiment 2 of the present invention.
In the figure, 100 wire ropes, 200 barrel sections, 1 barrel piece, 11 hoisting points, 2 first wire ropes, 3 second wire ropes.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 2, a method for hoisting a shell ring for reducing the dislocation of a precast concrete shell comprises the following steps:
step 1: hanging points 11 are pre-buried at two ends of the top of each cylinder sheet 1 of the cylinder section.
Step 2: every two adjacent cylinder pieces 1 are connected through a first steel wire rope 2, and two ends of the first steel wire rope 2 are respectively connected to two adjacent lifting points 11 of the two cylinder pieces 1.
And step 3: every two first steel wire ropes 2 symmetrically distributed on the shell ring are connected through a second steel wire rope 3, and two ends of the second steel wire rope 3 are movably connected to the middle of the first steel wire ropes 2 respectively. The second steel wire rope 3 and the first steel wire rope 2 can be movably connected through a fixed pulley and adjusted in a relative sliding mode, and can also be adjusted in a relative sliding mode through other forms such as a lantern ring and the like, so that the length difference of the first steel wire ropes 2 is compensated through sliding, shearing force is prevented from being generated between the two adjacent cylinder sheets 1, pressure of bolts used for connecting the cylinder sheets 1 is reduced, and dislocation between the cylinder sheets 1 is avoided.
And 4, step 4: the middle part of the second steel wire rope 3 is movably connected to a lifting hook 4 of the lifting equipment. The second steel wire rope 3 and the lifting hook 4 can be movably connected through a fixed pulley and adjusted in a relative sliding mode, and the relative sliding between the second steel wire rope 3 and the lifting hook 4 can be achieved through other forms such as a lantern ring, so that the length difference of each second steel wire rope 3 is compensated through sliding, shearing force generated between two adjacent cylinder sheets 1 is avoided, the pressure of a bolt used for connecting the cylinder sheets 1 is reduced, and the dislocation between the cylinder sheets 1 is avoided.
The number of the cylinder sheets 1 of the cylinder section is double.
The number of the cylinder sheets 1 is equivalent to that of the first steel wire ropes 2.
The number of the cylinder sheets 1 is twice of that of the second steel wire ropes 3.
The lengths of the first steel wire ropes 2 are the same, and the length of each first steel wire rope 2 is larger than the distance between the adjacent lifting points 11 of the two adjacent cylinder sheets 1.
The length of each second steel wire rope 3 is the same.
Because the weight of each barrel piece 1 is equal, the symmetry of the assembly of the barrel pieces 1 is utilized, the stress uniformity of each first steel wire rope 2 directly connected with the barrel piece 1 can be ensured through the corresponding symmetrical arrangement of the first steel wire rope 2 and the second steel wire rope 3 and the relative sliding adjustment among the first steel wire rope 2, the second steel wire rope 3 and the lifting hook 4, and the stress uniformity of each second steel wire rope 3 connecting each first steel wire rope 2 and the lifting hook 4 is also ensured. Even if slight difference of the lengths of the steel wire ropes or the embedded positions of the hoisting points 11 are asymmetric and the like, the stress uniformity of the first steel wire rope 2 and the second steel wire rope 3 can be ensured through symmetrical arrangement and sliding compensation, so that the dislocation between the cylinder sheets 1 is reduced or avoided.
Example 1:
referring to fig. 2 and 3, the cylindrical section is formed by symmetrically assembling four cylindrical sheets 1, and the four cylindrical sheets 1 are sequentially marked as a first cylindrical sheet T1, a second cylindrical sheet T2, a third cylindrical sheet T3 and a fourth cylindrical sheet T4 along the circumferential direction and the counterclockwise direction; hanging points 11 are symmetrically pre-buried at two ends of the tops of the four cylinder pieces 1 respectively, and the two hanging points 11 on each cylinder piece 1 are marked as a left hanging point and a right hanging point along the circumferential direction and the anticlockwise direction. According to the number of the barrel pieces 1, four first steel wire ropes 2 are adopted and sequentially marked as a first steel wire rope S1, a second steel wire rope S2, a third steel wire rope S3 and a fourth steel wire rope S4, and two second steel wire ropes 3 are adopted and sequentially marked as a fifth steel wire rope S5 and a sixth steel wire rope S6.
During hoisting, two ends of a first steel wire rope S1 are connected to a right hoisting point of a first cylinder T1 and a left hoisting point of a second cylinder T2, two ends of a second steel wire rope S2 are connected to a right hoisting point of a second cylinder T2 and a left hoisting point of a third cylinder T3, two ends of a third steel wire rope S3 are connected to a right hoisting point of a third cylinder T3 and a left hoisting point of a fourth cylinder T4, two ends of a fourth steel wire rope S4 are connected to a right hoisting point of a fourth cylinder T4 and a left hoisting point of a first cylinder T1, and two adjacent cylinders 1 can be connected through a first steel wire rope 2. The first steel wire rope S1 and the third steel wire rope S3 are symmetrically arranged around the center of the top surface of the shell section, and the second steel wire rope S2 and the fourth steel wire rope S4 are symmetrically arranged around the center of the top surface of the shell section.
Two ends of a fifth steel wire rope S5 are connected with the middle of a first steel wire rope S1 and the middle of a third steel wire rope S3, two ends of a sixth steel wire rope S6 are connected with the middle of a second steel wire rope S2 and the middle of a fourth steel wire rope S4, the middle of a fifth steel wire rope S5 and the middle of a sixth steel wire rope S6 are connected to a lifting hook 4 of lifting equipment, and the barrel section can be lifted through the lifting hook 4 through the fifth steel wire rope S5 and the sixth steel wire rope S6.
Example 2:
referring to fig. 4, the cylindrical section is formed by symmetrically assembling two cylindrical sheets 1, which are respectively marked as a first cylindrical sheet T1 and a second cylindrical sheet T2; hanging points 11 are symmetrically pre-buried at two ends of the tops of the two cylinder sheets 1 respectively, and the two hanging points 11 on each cylinder sheet 1 are marked as a left hanging point and a right hanging point along the circumferential direction and the anticlockwise direction. According to the number of the bobbin pieces 1, two first steel wire ropes 2 are adopted and are sequentially marked as a first steel wire rope S1 and a second steel wire rope S2, and one second steel wire rope 3 is adopted and is marked as a third steel wire rope S3.
During hoisting, two ends of a first steel wire rope S1 are connected to a right hoisting point of a first cylinder T1 and a left hoisting point of a second cylinder T2, two ends of a second steel wire rope S2 are connected to a right hoisting point of a second cylinder T2 and a left hoisting point of a first cylinder T1, so that the two cylinders 1 can be connected through a first steel wire rope 2, and the first steel wire rope S1 and the second steel wire rope S2 are symmetrically arranged around the center of the top surface of the cylinder section. And connecting the middle parts of the first steel wire rope S1 and the second steel wire rope S2 at the two ends of the third steel wire rope S3, and connecting the middle part of the third steel wire rope S3 to a lifting hook 4 of lifting equipment, so that the barrel section can be lifted through the third steel wire rope S3 by the lifting hook 4.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A shell ring hoisting method for reducing the dislocation of a precast concrete shell piece is characterized by comprising the following steps: the method comprises the following steps:
step 1: hanging points (11) are embedded at two ends of the top of each cylinder piece (1) of the cylinder section;
step 2: every two adjacent cylinder sheets (1) are connected through a first steel wire rope (2), and two ends of the first steel wire rope (2) are respectively connected to two adjacent hoisting points (11) of the two cylinder sheets (1);
and step 3: every two first steel wire ropes (2) symmetrically distributed on the shell ring are connected through a second steel wire rope (3), and two ends of the second steel wire rope (3) are movably connected to the middle of the first steel wire ropes (2) respectively;
and 4, step 4: the middle part of the second steel wire rope (3) is movably connected to a lifting hook (4) of the lifting equipment;
the number of the cylinder segments (1) of the cylinder section is even, the first steel wire ropes (2) are symmetrically arranged around the center of the top surface of the cylinder section, and the second steel wire ropes (3) are symmetrically arranged around the center of the top surface of the cylinder section;
the number of the cylinder sheets (1) is equal to that of the first steel wire ropes (2);
the number of the cylinder sheets (1) is twice of that of the second steel wire ropes (3).
2. The method for hoisting the shell ring for reducing the dislocation of the precast concrete shell ring according to claim 1, wherein the method comprises the following steps: the length of each first steel wire rope (2) is the same, and the length of each first steel wire rope (2) is larger than the distance between the adjacent lifting points (11) of the two adjacent cylinder sheets (1).
3. The method for hoisting the shell ring for reducing the dislocation of the precast concrete shell ring according to claim 1, wherein the method comprises the following steps: the length of each second steel wire rope (3) is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745183.5A CN111980865B (en) | 2020-07-29 | 2020-07-29 | Shell ring hoisting method for reducing dislocation of precast concrete shell piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745183.5A CN111980865B (en) | 2020-07-29 | 2020-07-29 | Shell ring hoisting method for reducing dislocation of precast concrete shell piece |
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| Publication Number | Publication Date |
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| CN111980865A CN111980865A (en) | 2020-11-24 |
| CN111980865B true CN111980865B (en) | 2021-11-12 |
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| CN202010745183.5A Active CN111980865B (en) | 2020-07-29 | 2020-07-29 | Shell ring hoisting method for reducing dislocation of precast concrete shell piece |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114087131A (en) * | 2021-10-29 | 2022-02-25 | 浙江华东工程建设管理有限公司 | Grouting-free dry-type connection fragmentation prefabricated assembly type concrete tower barrel rapid and efficient hoisting method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035939A (en) * | 2011-01-26 | 2015-11-11 | 乌本产权有限公司 | Method and device for erecting a tower for a wind energy plant |
| CN106150924A (en) * | 2016-08-31 | 2016-11-23 | 山东中车同力钢构有限公司 | A kind of mixed steel tower and wind power generating set |
| CN108137290A (en) * | 2015-10-01 | 2018-06-08 | 维斯塔斯风力系统有限公司 | For promoting the lifting device of wind turbine component |
| CN108862015A (en) * | 2018-09-17 | 2018-11-23 | 五冶集团上海有限公司 | A kind of precast beam lifting auxiliary tool and hanging method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8434799B2 (en) * | 2010-06-03 | 2013-05-07 | Robert J. Reger | Synthetic fiber sling and roller system for carrying and positioning a load |
| NL2005967C2 (en) * | 2011-01-07 | 2012-07-10 | Ihc Handling Systems Vof | Clamping device. |
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- 2020-07-29 CN CN202010745183.5A patent/CN111980865B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035939A (en) * | 2011-01-26 | 2015-11-11 | 乌本产权有限公司 | Method and device for erecting a tower for a wind energy plant |
| CN108137290A (en) * | 2015-10-01 | 2018-06-08 | 维斯塔斯风力系统有限公司 | For promoting the lifting device of wind turbine component |
| CN106150924A (en) * | 2016-08-31 | 2016-11-23 | 山东中车同力钢构有限公司 | A kind of mixed steel tower and wind power generating set |
| CN108862015A (en) * | 2018-09-17 | 2018-11-23 | 五冶集团上海有限公司 | A kind of precast beam lifting auxiliary tool and hanging method |
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