CN111997432A - Construction platform lifting device and method for precast concrete tower barrel - Google Patents
Construction platform lifting device and method for precast concrete tower barrel Download PDFInfo
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- CN111997432A CN111997432A CN202010745186.9A CN202010745186A CN111997432A CN 111997432 A CN111997432 A CN 111997432A CN 202010745186 A CN202010745186 A CN 202010745186A CN 111997432 A CN111997432 A CN 111997432A
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- platform
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- rope
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
- E04H12/342—Arrangements for stacking tower sections on top of each other
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0006—Harnesses; Accessories therefor
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3276—Arrangements on buildings for connecting safety-lines
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3295—Guide tracks for safety lines
Abstract
The invention discloses a construction platform lifting device and a construction platform lifting method for a precast concrete tower tube, wherein the device comprises a lower shell ring (1), an upper shell ring (4) lifted by a lifting assembly, a construction platform (2) lifted by the lifting assembly, a first safety belt (31) and a second safety belt (32); a plurality of first hanging hoisting points (11) and first safe hoisting points (12) are arranged on the inner wall of the lower shell ring; a plurality of platform hoisting points (21) are arranged on the construction platform, and a first platform hoisting rope (22) and a second platform hoisting rope (23) are connected to the platform hoisting points; a plurality of second hanging lifting points (41) and second safe lifting points (42) are arranged on the inner wall of the upper shell ring, and safety ropes (43) are fastened on the second safe lifting points. The construction platform lifting device can ensure the balanced stress of each lifting point of the construction platform in the process of lifting the shell ring of the concrete tower barrel, improve the stability of the construction platform along with the construction of the tower barrel and avoid construction safety accidents.
Description
Technical Field
The invention relates to a construction device and a construction method of a concrete wind power tower barrel, in particular to a construction platform lifting device and a construction platform lifting method of a prefabricated concrete tower barrel.
Background
Wind power generation is used as a clean energy technology and widely applied to regions with good wind resources in China, the diameter of a wind wheel is larger and larger, and the height of a tower barrel is higher and higher with the increasing power of a wind generating set, and at present, the height of the tower barrel of a domestic onshore wind generating set reaches 120-160 m. The traditional steel tower drum has low rigidity, and the tower drum is easy to generate resonance and damage. At present, a novel steel-concrete tower tube structure system with a concrete tower tube at the lower part and a steel tower tube at the upper part is deeply researched and widely applied, the rigidity of the tower tube can be effectively improved, and the tower tube is ensured to avoid resonance. Because the concrete tower section of thick bamboo generally adopts the mode of merogenesis, burst prefabrication, divide into a plurality of shell legs along tower section of thick bamboo direction promptly, divide into a plurality of section of thick bamboo pieces along tower section of thick bamboo ring, transport to the scene after the mill is prefabricated and assemble and hoist and mount the operation, make it form a whole.
When the precast concrete tower cylinder is hoisted, the elevation at the top of the cylinder section must be measured, the work such as leveling and coating epoxy base slurry must be performed, a construction platform must be arranged in the tower cylinder for operators to operate, the construction platform needs to be hoisted on the inner wall of the cylinder section, and the construction is promoted along with the hoisting of the cylinder section.
The construction platform lifting method in the prior art comprises the following steps: after the last shell ring is installed, the auxiliary hook of the descending crane directly lifts the construction platform. This approach has two disadvantages:
firstly, the horizontal distance between a main hook and an auxiliary hook of a large crane is 0.5-1m, so that the auxiliary hook is not positioned at the center of a tower, and further the construction platform is inclined in the lifting process, or the stress between lifting points of the construction platform is uneven.
Secondly, constructors only buckle the safety belt on the construction platform in the lifting process of the construction platform, and although the lifting height of each time is only the height of each shell ring, in the lifting process, the constructors can overturn with the construction platform due to the fact that the lifting rope is broken and the like when standing on the construction platform, and the constructors can overturn synchronously with the construction platform and even have safety accidents such as falling.
Disclosure of Invention
The invention aims to provide a construction platform lifting device for a precast concrete tower tube, which can improve the lifting stability of a construction platform in the precast concrete tower tube and avoid construction safety accidents.
The second purpose of the invention is to provide a construction platform lifting method for a precast concrete tower barrel, which can provide effective safety guarantee for a construction platform and constructors at any time in the construction process, improve the lifting stability and the working efficiency of the construction platform and avoid construction safety accidents.
The invention is realized by the following steps:
a construction platform lifting device for a precast concrete tower barrel comprises a lower barrel section, an upper barrel section, a construction platform, a first safety belt and a second safety belt, wherein the lower barrel section is arranged at the lower part and is installed completely; a plurality of first hanging points for connecting a construction platform and a plurality of first safety hanging points for connecting a first safety belt are arranged on the inner wall of the lower shell ring at intervals; a plurality of platform hoisting points are arranged on the upper surface of the construction platform at intervals, and a first platform hoisting rope and a second platform hoisting rope are fixedly connected to each platform hoisting point; a plurality of second hanging lifting points used for being connected with a construction platform and a plurality of second safety lifting points used for being connected with a first safety belt are arranged on the inner wall of the upper shell ring at intervals, a safety rope is tied and buckled on each second safety lifting point, and the second safety belt can be tied and buckled on the safety rope.
The first suspension lifting points are uniformly arranged along the annular direction of the lower shell ring, and the first safety lifting points are uniformly arranged along the annular direction of the lower shell ring.
And the plurality of platform hoisting points are circumferentially and uniformly distributed along the edge of the construction platform.
The plurality of second suspension lifting points are uniformly arranged along the annular direction of the upper cylindrical shell section, and the plurality of second safety lifting points are uniformly arranged along the annular direction of the upper cylindrical shell section.
The lifting assembly comprises a lifting hook of the lifting equipment, a first crane lifting rope and a second crane lifting rope, one end of each of the first crane lifting ropes and one end of each of the second crane lifting ropes are tied and buckled on the lifting hook, the other ends of the first crane lifting ropes are connected to lifting points on the top surface of the upper barrel section respectively, and the other ends of the second crane lifting ropes are connected with second platform lifting ropes tied and buckled on the platform lifting points in a one-to-one correspondence mode.
The platform hoisting points, the first platform hoisting ropes, the second platform hoisting ropes and the second crane hoisting ropes are equal in number.
A construction platform lifting method of a precast concrete tower barrel comprises the following steps:
step 1: fastening a first platform lifting rope of the construction platform on a first suspension lifting point of the lower shell ring, and fastening a first safety belt on a first safety lifting point of the lower shell ring;
step 2: before the upper cylindrical section is hoisted, one end of the safety rope is tied and buckled on a safety hoisting point of the upper cylindrical section in advance; simultaneously tying and buckling a first crane lifting rope and a second crane lifting rope on a lifting hook of the lifting equipment, and tying and buckling the other end of the first crane lifting rope on a top surface lifting point of the upper cylindrical shell;
and step 3: hoisting the upper shell ring by hoisting equipment through a lifting hook, descending the lifting hook to enable the upper shell ring to descend above the lower shell ring and adjusting the position of the upper shell ring;
and 4, step 4: tying a second safety belt to the other end of the safety rope of the upper cylindrical section and releasing the first safety belt tied to the first safety lifting point of the lower cylindrical section;
and 5: continuing to descend the hook of the crane, and buckling a second platform lifting rope on the other end of the second crane lifting rope;
step 6: lifting the lifting hook, and releasing a first platform lifting rope tied and buckled on a first hanging point of the lower shell ring on the construction platform;
and 7: continuously lifting the lifting hook to enable the construction platform to be lifted to be higher than the designed installation height of the construction platform in the upper cylindrical section, and tying a first platform lifting rope on the construction platform on a second hanging lifting point of the upper cylindrical section;
and 8: descending the lifting hook to enable the construction platform to descend to the designed installation height in the upper shell ring;
and step 9: the first safety belt is buckled on a second safety lifting point of the upper cylinder section, and the buckling of the second safety belt and the safety rope on the upper cylinder section is released;
step 10: the second platform lifting rope tied and buckled on the second crane lifting rope and the first crane lifting rope tied and buckled on the top surface lifting point of the upper cylindrical section are released, and the lifting of the construction platform in the two adjacent cylindrical sections is completed;
step 11: and (5) repeating the steps 1-10 along with the hoisting construction of the tower barrel to realize the section-by-section lifting of the construction platform in the tower barrel.
In the step 3, the first crane lifting rope is in a tensioning state; in the step 5, the first crane lifting rope is in a relaxed and unstressed state.
In step 8, the first platform lifting rope is in a tensioning stress state, and the weight of the construction platform is completely borne by the first platform lifting rope.
Compared with the prior art, the invention has the following beneficial effects:
1. the construction platform can be switched between the upper barrel section and the lower barrel section through the connection of the lifting ropes, the stress balance among lifting points of the construction platform is guaranteed in the process of lifting the construction platform, the stable lifting of the construction platform is guaranteed, and therefore the efficiency of tower barrel lifting operation is improved.
2. The safety belt is connected to the installed tower drums, and the two safety belts are switched between the two tower drums, so that the safety belt can effectively protect constructors at any time, and safety accidents are effectively prevented under the unexpected conditions of crane lifting rope breakage, construction platform damage or overturning and the like.
The construction platform lifting device can ensure the balanced stress of each lifting point of the construction platform in the process of lifting the shell ring of the concrete tower barrel, improve the stability of the construction platform along with the construction of the tower barrel and avoid construction safety accidents.
Drawings
Fig. 1 is a schematic structural view of a construction platform positioned in a lower shell ring in a construction platform lifting device for a precast concrete tower shell according to the present invention;
FIG. 2 is a schematic illustration of the hoisting of the upper shell ring in the construction platform hoist of the precast concrete tower shell of the present invention;
FIG. 3 is a schematic construction diagram of step 4 in the construction platform lifting method of the precast concrete tower tube according to the present invention;
FIG. 4 is a schematic construction diagram of step 5 of the construction platform lifting method of the precast concrete tower tube according to the present invention;
FIG. 5 is a schematic construction diagram of step 6 in the construction platform lifting method of the precast concrete tower tube according to the present invention;
fig. 6 is a construction diagram of step 9 in the construction platform lifting method of the precast concrete tower tube according to the present invention;
fig. 7 is a construction diagram of step 10 in the construction platform elevating method of the precast concrete tower tube according to the present invention.
In the figure, 1 lower cylinder section, 11 first suspension lifting point, 12 first safety lifting point, 2 construction platform, 21 platform lifting point, 22 first platform lifting rope, 23 second platform lifting rope, 3 constructor, 31 first safety belt, 32 second safety belt, 4 upper cylinder section, 41 second suspension lifting point, 42 second safety lifting point, 43 safety rope, 5 lifting hook, 6 first crane lifting rope, 7 second crane lifting rope.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1 and 2, a construction platform lifting device for a precast concrete tower tube includes a lower shell ring 1 installed at a lower portion, an upper shell ring 4 lifted to the lower shell ring 1 by a lifting assembly, a construction platform 2 lifted by the lifting assembly, a first safety belt 31 and a second safety belt 32; a plurality of first hanging points 11 for connecting the construction platform 2 and a plurality of first safety hanging points 12 for connecting a first safety belt 31 are arranged on the inner wall of the lower shell ring 1 at intervals; a plurality of platform hoisting points 21 are arranged on the upper surface of the construction platform 2 at intervals, and a first platform hoisting rope 22 and a second platform hoisting rope 23 are fixedly connected to each platform hoisting point 21; a plurality of second hanging points 41 used for connecting the construction platform 2 and a plurality of second safety hanging points 42 used for connecting the first safety belts 31 are arranged on the inner wall of the upper shell ring 4 at intervals, a safety rope 43 is fastened on each second safety hanging point 42, and the second safety belts 32 can be fastened on the safety rope 43. The first safety belt 31 and the second safety belt 32 can be fastened to the body of the constructor 3 for securing the work safety of the station constructor 3 on the construction platform 2.
The plurality of first hanging points 11 are uniformly arranged along the circumferential direction of the lower barrel section 1, and the distance between each first hanging point 11 and the top surface of the lower barrel section 1 is 200-300mm, and the first hanging points are used for hanging the construction platform 2.
The first safety hoisting points 12 are uniformly arranged along the circumferential direction of the lower shell ring 1, and the distance between each first safety hoisting point 12 and the top surface of the lower shell ring 1 is 200-300mm, and the first safety hoisting points are used for fastening the first safety belt 31 and the constructor 3.
A plurality of platform hoisting point 21 along construction platform 2's edge hoop equipartition, ensure that first platform lifting rope 22 on a plurality of platform hoisting point 21 can be connected with first suspension hoisting point 1 one-to-one.
The first platform hoist rope 22 may have a length corresponding to the second platform hoist rope 23, and the first platform hoist rope 22 and the second platform hoist rope 23 may be used interchangeably.
The plurality of second hanging points 41 are uniformly arranged along the circumferential direction of the upper barrel section 4, and the distance between each second hanging point 41 and the top surface of the upper barrel section 4 is 200-300mm, and the second hanging points are used for hanging the construction platform 2.
The plurality of second safety lifting points 42 are uniformly arranged along the circumferential direction of the upper barrel section 4, and the distance between each second safety lifting point 42 and the top surface of the upper barrel section 4 is 200-300mm, and the second safety lifting points are used for fastening the first safety belt 31 and the constructor 3.
The lifting assembly comprises a lifting hook 5 of a lifting device, a first crane lifting rope 6 and a second crane lifting rope 7, one end of a plurality of first crane lifting ropes 6 and one end of a plurality of second crane lifting ropes 7 are fastened on the lifting hook 5, the lifting and descending of the lifting hook 5 are controlled through the lifting device, and the other ends of a plurality of first crane lifting ropes 6 are connected to a lifting point on the top surface of the upper cylindrical shell section 4 at intervals and used for lifting the upper cylindrical shell section 4; the other ends of the second crane lifting ropes 7 are correspondingly connected with second platform lifting ropes 23 fastened on the platform lifting points 21 one by one respectively for lifting the construction platform 2.
The platform hoisting points 21, the first platform hoisting ropes 22, the second platform hoisting ropes 23 and the second crane hoisting ropes 7 are equal in number, so that the stress balance and stability in the hoisting and lifting processes of the construction platform 2 are ensured.
A construction platform lifting method of a precast concrete tower barrel comprises the following steps:
referring to fig. 1, step 1: the first platform lifting rope 22 of the construction platform 2 is fastened to the first suspension lifting point 11 of the lower shell ring 1, and the first safety belt 31 is fastened to the first safety lifting point 12 of the lower shell ring 1. The constructors 3 fastened to the first safety belt 31 and the second safety belt 32 can measure the elevation of the top of the lower shell ring 1, level and paint epoxy mortar on the construction platform 2.
Please refer to fig. 2, step 2: before the upper cylindrical shell section 4 is hoisted, one end of a safety rope 43 is tied and buckled on a safety hoisting point 42 of the upper cylindrical shell section 4 in advance; a first crane lifting rope 6 and a second crane lifting rope 7 are simultaneously fastened on a lifting hook 5 of the lifting equipment, and the other end of the first crane lifting rope 6 is fastened on a top surface lifting point of the upper cylindrical section 4.
And step 3: the upper shell ring 4 is hoisted through the hoisting equipment through the hoisting hook 5, the hoisting hook 5 is descended to enable the upper shell ring 4 to slowly descend to the upper part of the lower shell ring 1 and adjust the position of the upper shell ring 4, and at the moment, the first crane hoisting rope 6 is in a tensioning state.
Please refer to fig. 3, step 4: the second seatbelt 32 is fastened to the other end of the safety rope 43 of the upper cylinder section 4, and the first seatbelt 31 fastened to the first safety hanging point 12 of the lower cylinder section 1 is released.
Please refer to fig. 4, step 5: the crane hook 5 is further lowered and the second platform hoist rope 23 is tied to the other end of the second crane hoist rope 7, while the first crane hoist rope 6 is in a relaxed unstressed state.
Please refer to fig. 5, step 6: lifting the lifting hook 5 to enable the first platform lifting rope 22 to be in a relaxed and unstressed state, and releasing the first platform lifting rope 22 tied and buckled on the first hanging lifting point 11 of the lower shell ring 1 on the construction platform 2, wherein at the moment, the construction platform 2 can be protected safely through the second crane lifting rope 7 and the second platform lifting rope 23, and accidents such as side turning of the construction platform 2 are avoided. Preferably, the lifting height of the lifting hook 5 is 10-20 cm.
And 7: and continuously lifting the lifting hook 5 to enable the construction platform 2 to be lifted to be higher than the designed installation height of the construction platform 2 in the upper shell ring 4, and tying the first platform lifting rope 22 on the construction platform 2 on the second hanging lifting point 41 of the upper shell ring 4. Preferably, the lifting height of the lifting hook 5 is in the range of 10-20 cm.
And 8: and (3) descending the lifting hook 5 to enable the construction platform 2 to descend to the designed installation height in the upper shell ring 4, wherein at the moment, the weight of the construction platform 2 is completely borne by the first platform lifting rope 22, and the first platform lifting rope 22 is in a tensioning stress state. Preferably, the descending height of the hook 5 is in the range of 20-30 cm.
Please refer to fig. 6, step 9: the first safety belt 31 is fastened to the second safety hanging point 42 of the upper cylinder section 4, and the fastening of the second safety belt 32 to the safety rope 43 on the upper cylinder section 4 is released.
Referring to fig. 7, step 10: and the second platform lifting rope 23 tied and buckled on the second lifting rope 7 and the first lifting rope 6 tied and buckled on the lifting point of the top surface of the upper cylindrical section 4 are removed, the lifting of the construction platform 2 in the two adjacent cylindrical sections is completed, and the constructor 3 can perform the work of measuring the elevation of the top of the upper cylindrical section 4, leveling, coating epoxy mortar and the like when standing on the construction platform 2.
Step 11: and (3) repeating the steps 1-10 along with the hoisting construction of the tower barrel to realize the section-by-section lifting of the construction platform 2 in the tower barrel.
Example 1:
six first suspension lifting points 11 are uniformly arranged on the inner wall of the lower shell ring 1 along the circumferential direction, and the distance between the first suspension lifting points 11 and the top surface of the lower shell ring 1 is 300mm and used for suspending the construction platform 2. Four first safety lifting points 12 are uniformly arranged on the inner wall of the lower shell ring 1 along the circumferential direction, the first safety lifting points 12 and the first suspension lifting points 11 are arranged in a staggered mode, and the distance between the first safety lifting points 12 and the top surface of the lower shell ring 1 is 300mm and used for fastening a first safety belt 31.
Six platform lifting points 21 are uniformly arranged on the upper surface of the construction platform 2 along the circumferential direction, and a first platform lifting rope 22 and a second platform lifting rope 23 which have the same length are fastened on each platform lifting point 21.
The first safety belt 31 and the second safety belt 32 are fastened to the constructor 3 and stand on the construction platform 2.
Six second suspension lifting points 41 are uniformly arranged on the inner wall of the upper shell ring 4 along the circumferential direction, and the distance between the second suspension lifting points 41 and the top surface of the upper shell ring 4 is 300mm and used for suspending the construction platform 2. Four second safety lifting points 42 are uniformly arranged on the inner wall of the upper cylindrical shell 4 along the circumferential direction, and the distance between the second safety lifting points 42 and the top surface of the upper cylindrical shell 4 is 300mm, so that the first safety belt 31 is fastened. A safety line 43 is fastened to the second safety lifting point 42 for fastening the second safety belt 32.
The lifting assembly mainly comprises a lifting hook 5, six first crane lifting ropes 6 and six second crane lifting ropes 7 which are fastened on the lifting hook 5, the first crane lifting ropes 6 are used for lifting the upper shell ring 4, and the second crane lifting ropes 7 are used for lifting the construction platform 2.
The concrete construction steps are as follows:
1. the first platform lifting rope 22 of the construction platform 2 is fastened to the first suspension lifting point 11 of the lower shell ring 1, and the constructor 3 fastens the first safety belt 31 to the first safety lifting point 12 of the lower shell ring 1, as shown in fig. 1. The constructor 3 can measure the elevation of the top of the lower shell ring 1, level and paint epoxy mortar on the construction platform 2.
2. Before the upper cylindrical shell section 4 is hoisted, one end of a safety rope 43 is tied and buckled on a second safety hoisting point 42 of the upper cylindrical shell section 4 in advance; a first crane lifting rope 6 and a second crane lifting rope 7 are simultaneously fastened on the lifting hook 5, and the other end of the first crane lifting rope 6 is fastened on a top surface lifting point of the upper cylindrical section 4.
3. The upper shell ring 4 is hoisted, slowly lowered and the position thereof is adjusted, so that the upper shell ring 4 is hoisted to the designed installation position, as shown in fig. 2.
4. After the upper shell ring 4 is mounted, the construction worker 3 fastens the second safety belt 32 to the safety rope 43 of the upper shell ring 4, and releases the first safety belt 31 fastened to the first safety hanging point 12 of the lower shell ring 1, as shown in fig. 3.
5. Continuing to lower the hook 5, the constructor 3 fastens the second platform hoist rope 23 to the second crane hoist rope 7, as shown in fig. 4.
6. The lifting hook 5 is slowly lifted for 20cm, and the constructor 3 releases the first platform lifting rope 22 tied and fastened on the first hanging lifting point 11 of the lower shell ring 1 on the construction platform 2, as shown in fig. 5.
7. The crane hook 5 is further lifted to make the position of the construction platform 2 20cm higher than the designed installation position in the upper shell ring 4, and the first platform lifting rope 22 of the construction platform 2 is fastened on the second suspension lifting point 41 of the upper shell ring 4.
8. The hook 5 is lowered by about 30cm so that the weight of the construction platform 2 is now fully borne by the first platform hoist line 22.
9. The constructor 3 fastens the first safety belt 31 to the second safety lifting point 42 of the upper shell section 4 as shown in fig. 6.
10. The constructor 3 releases the second safety belt 32 tied to the safety rope 43 of the upper shell ring 4, releases the second platform lifting rope 23 tied to the second crane lifting rope 7, and releases the first crane lifting rope 6 tied to the top lifting point of the upper shell ring 4, as shown in fig. 7. The constructor 3 can measure the elevation of the top of the upper shell ring 4, level and paint epoxy mortar on the construction platform 2.
11. Repeating the steps in this way, so that the construction platform 2 is lifted section by section along with the hoisting of the tower drum until the hoisting of the tower drum is completed.
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 (9)
1. The utility model provides a construction platform hoisting device of a precast concrete tower section of thick bamboo, characterized by: the safety device comprises a lower shell ring (1) which is arranged at the lower part and is installed completely, an upper shell ring (4) which is hoisted to the lower shell ring (1) through a hoisting assembly, a construction platform (2) which is hoisted through the hoisting assembly, a first safety belt (31) and a second safety belt (32); a plurality of first hanging points (11) used for connecting a construction platform (2) and a plurality of first safety hanging points (12) used for connecting a first safety belt (31) are arranged on the inner wall of the lower shell ring (1) at intervals; a plurality of platform hoisting points (21) are arranged on the upper surface of the construction platform (2) at intervals, and a first platform hoisting rope (22) and a second platform hoisting rope (23) are fixedly connected to each platform hoisting point (21); a plurality of second suspension lifting points (41) used for being connected with the construction platform (2) and a plurality of second safety lifting points (42) used for being connected with the first safety belt (31) are arranged on the inner wall of the upper shell ring (4) at intervals, a safety rope (43) is tied and buckled on each second safety lifting point (42), and the second safety belt (32) can be tied and buckled on the safety rope (43).
2. The precast concrete tower drum construction platform lifting device according to claim 1, wherein: the first suspension lifting points (11) are uniformly arranged along the annular direction of the lower cylindrical shell (1), and the first safety lifting points (12) are uniformly arranged along the annular direction of the lower cylindrical shell (1).
3. The precast concrete tower drum construction platform lifting device according to claim 1, wherein: the platform hoisting points (21) are circumferentially and uniformly distributed along the edge of the construction platform (2).
4. The precast concrete tower drum construction platform lifting device according to claim 1, wherein: the plurality of second suspension lifting points (41) are uniformly arranged along the annular direction of the upper shell ring (4), and the plurality of second safety lifting points (42) are uniformly arranged along the annular direction of the upper shell ring (4).
5. The precast concrete tower drum construction platform lifting device according to claim 1, wherein: the lifting assembly comprises a lifting hook (5) of lifting equipment, first crane lifting ropes (6) and second crane lifting ropes (7), one ends of the first crane lifting ropes (6) and one ends of the second crane lifting ropes (7) are fastened on the lifting hook (5), the other ends of the first crane lifting ropes (6) are connected to top surface lifting points of the upper barrel section (4) respectively, and the other ends of the second crane lifting ropes (7) are connected with second platform lifting ropes (23) fastened on the platform lifting points (21) in a one-to-one correspondence mode.
6. The precast concrete tower drum construction platform lifting device according to claim 1, wherein: the number of the platform hoisting points (21), the first platform hoisting ropes (22), the second platform hoisting ropes (23) and the second crane hoisting ropes (7) is equal.
7. A method of lifting a construction platform using the construction platform lifting device of a precast concrete tower tube of claim 1, characterized in that: the method comprises the following steps:
step 1: fastening a first platform lifting rope (22) of a construction platform (2) on a first suspension lifting point (11) of a lower cylindrical shell (1), and fastening a first safety belt (31) on a first safety lifting point (12) of the lower cylindrical shell (1);
step 2: before the upper cylindrical shell section (4) is hoisted, one end of a safety rope (43) is tied and buckled on a safety hoisting point (42) of the upper cylindrical shell section (4) in advance; simultaneously tying and buckling a first crane lifting rope (6) and a second crane lifting rope (7) on a lifting hook (5) of the lifting equipment, and tying and buckling the other end of the first crane lifting rope (6) on a top surface lifting point of the upper cylindrical shell section (4);
and step 3: hoisting the upper shell ring (4) through a hoisting device by a hoisting hook (5), descending the hoisting hook (5) to enable the upper shell ring (4) to descend above the lower shell ring (1) and adjusting the position of the upper shell ring (4);
and 4, step 4: a second safety belt (32) is fastened to the other end of the safety rope (43) of the upper cylindrical section (4), and a first safety belt (31) fastened to a first safety lifting point (12) of the lower cylindrical section (1) is released;
and 5: continuing to descend the lifting hook (5) of the crane, and fastening a second platform lifting rope (23) on the other end of the second crane lifting rope (7);
step 6: lifting the lifting hook (5), and releasing a first platform lifting rope (22) tied and buckled on a first hanging point (11) of the lower shell ring (1) on the construction platform (2);
and 7: continuously lifting the lifting hook (5) to enable the construction platform (2) to be lifted to be higher than the designed installation height of the construction platform (2) in the upper shell ring (4), and tying a first platform lifting rope (22) on the construction platform (2) on a second hanging lifting point (41) of the upper shell ring (4);
and 8: the lifting hook (5) is descended to enable the construction platform (2) to descend to the designed installation height in the upper shell ring (4);
and step 9: the first safety belt (31) is fastened on a second safety lifting point (42) of the upper cylindrical shell (4), and the fastening of the second safety belt (32) and a safety rope (43) on the upper cylindrical shell (4) is released;
step 10: a second platform lifting rope (23) tied and buckled on a second crane lifting rope (7) and a first crane lifting rope (6) tied and buckled on a top surface lifting point of the upper cylindrical shell section (4) are released, and the lifting of the construction platform (2) in the two adjacent cylindrical shell sections is completed;
step 11: and (5) repeating the steps 1-10 along with the hoisting construction of the tower barrel to realize the section-by-section lifting of the construction platform (2) in the tower barrel.
8. The method of lifting a construction platform according to claim 7, wherein: in the step 3, the first crane lifting rope (6) is in a tensioning state; in the step 5, the first crane lifting rope (6) is in a relaxed and unstressed state.
9. The method of lifting a construction platform according to claim 7, wherein: in the step 8, the first platform lifting rope (22) is in a tensioning stress state, and the weight of the construction platform (2) is completely borne by the first platform lifting rope (22).
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