CN107013030B - Hoisting type elevator shaft construction platform device and elevator shaft construction method - Google Patents
Hoisting type elevator shaft construction platform device and elevator shaft construction method Download PDFInfo
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- CN107013030B CN107013030B CN201710353314.3A CN201710353314A CN107013030B CN 107013030 B CN107013030 B CN 107013030B CN 201710353314 A CN201710353314 A CN 201710353314A CN 107013030 B CN107013030 B CN 107013030B
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
- E04G3/246—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the inside contour of a building
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
- E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
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Abstract
The invention relates to a hoisting type elevator shaft construction platform device and an elevator shaft construction method, wherein the elevator shaft construction platform device comprises a supporting platform, at least two supporting frame bodies are arranged on the supporting platform, the rod lengths of the two supporting frame bodies are parallel to the supporting plane of the supporting platform and are connected through supporting springs, two ends of the two supporting frame bodies extend out of two sides of the supporting platform, the two supporting frame bodies are connected with a stretching mechanism, the stretching mechanism drives the two supporting frame bodies to move oppositely and enables two ends of the supporting frame bodies to be far away from the upper end face of a shear wall of an elevator shaft, the first elevator shaft is constructed, the supporting platform is hoisted and placed at the upper end of the shear wall of the upper elevator shaft, two ends of the two supporting frame bodies are erected at the upper end of the shear wall of the elevator shaft, supporting of the supporting platform is achieved, supporting of construction tools, materials and personnel of the elevator shaft can be achieved through the supporting platform, safety of the personnel and safety of the whole construction can be guaranteed, and construction efficiency is high.
Description
Technical Field
The invention relates to the technical field of engineering construction, in particular to a hoisting type elevator shaft construction platform device and an elevator shaft construction method.
Background
Because the building in the existing engineering construction mostly takes the high-rise as the main, its elevator setting generally increases, and structural style mostly takes concrete shear wall as the owner, forms in the construction and sets up construction operation platform many times, carries out constructions such as reinforcing bar, template and concrete mixture, takes place operation platform unstability occasionally, operating personnel accident of falling, and some construction projects take place elevator shaft inner wall template and operating personnel even and fall, smash operation platform's serious accident.
Disclosure of Invention
The primary objects of the present invention are: the utility model provides a hoist and mount formula elevartor shaft construction platform device can conveniently realize the safety of construction to the construction operation of high-rise elevartor shaft, assurance construction.
In order to realize the purpose, the invention adopts the technical scheme that:
hoist and mount formula elevartor shaft construction platform device, including supporting platform, the last two support frame bodies that are provided with of supporting platform at least, the rod length of two support frame bodies is parallel with supporting platform's supporting plane and between be connected through supporting spring, supporting platform's both sides are stretched out at the both ends of two support frame bodies, two support frame bodies are connected with stretching mechanism, stretching mechanism drives two support frame bodies and moves in opposite directions and makes the up end that the elevartor shaft shear force wall was kept away from at the both ends of supporting the support frame body.
The invention also has the following features:
the two support frame bodies are arranged in the guide pipe of the support platform in a sliding mode, the pipe length direction of the guide pipe is horizontal, the support platform is connected with the hoisting mechanism, and the hoisting mechanism drives the support platform to be located in the elevator shaft to move up and down.
The stretching mechanism comprises pull rods which are hinged to the two support frames respectively, hinged shafts of the two pull rods are horizontal and perpendicular to the length direction of the two support frames, the other ends of the two pull rods are hinged to the two connecting rods, a four-bar mechanism is formed between the two connecting rods of the two pull rods, and a pull rope of the hoisting mechanism is connected with a hinged joint of the two connecting rods.
The articulated gyro wheel support that is provided with on the supporting platform of two supporting frame body both ends sides, the articulated shaft of gyro wheel support is parallel with the articulated shaft of pull rod, the support rolls is installed to the overhang end of gyro wheel support, when the stand platform's stand pipe is stretched out to the tip of two supporting frame bodies, the gyro wheel support presents vertical state, when the tip of two supporting frame bodies and stand platform's stand pipe mouth of pipe parallel and level, the gyro wheel support presents the state to the slope extension of supporting platform both sides.
Be provided with first bar hole on the supporting platform, the hole length direction in first bar hole is parallel with the length direction who supports the support body, two are provided with the connecting axle on supporting the support body respectively, the connecting axle constitutes the articulated shaft of pull rod and stretches out first bar hole, the one end that support roller was kept away from to the gyro wheel support is provided with the second bar hole, the second bar hole is parallel with gyro wheel support length direction, the end that stretches out of connecting axle slides and sets up downtheholely at the second bar.
Two groups of the two support frames are arranged at intervals along the length direction of the support platform.
Another object of the present invention is to: provided is an elevator shaft construction method which can improve the efficiency of elevator shaft construction and ensure the safety of construction operators.
In order to achieve the purpose, the invention adopts the technical scheme that:
the construction method of the elevator shaft adopts the hoisting type elevator shaft construction platform device, and comprises the following steps:
A. leveling a floor to be constructed, arranging an inner mold frame in an outer mold frame to enable the inner mold frame and the outer mold frame to form a gap for filling concrete, fixing the inner mold frame and the outer mold frame by utilizing a connecting bolt, filling the gap between the inner mold frame and the outer mold frame with the concrete, and removing a mold after the concrete is condensed to a set strength;
B. erecting a supporting platform of the construction tower crane platform device at an opening at the upper end of a formed elevator shaft at the bottom layer, erecting two supporting frame bodies of the supporting platform at the upper end of a formed elevator shaft shear wall, and connecting a hoisting mechanism with the upper plate surface of the supporting platform;
C. arranging the inner mold frame in the outer mold frame on the upper plate surface of the supporting platform to enable the inner mold frame and the outer mold frame to form a gap for filling concrete, fixing the inner mold frame and the outer mold frame by utilizing a connecting bolt, filling the concrete into the gap between the inner mold frame and the outer mold frame, and removing the mold after the concrete is condensed to a set strength;
D. starting the hoisting mechanism, enabling the two support frames to be relatively close to each other by utilizing the hoisting ropes, enabling the end parts of the two support frames to be flush with the pipe orifices of the guide pipes of the support platform, and enabling the support platform to move upwards until the end parts of the two support frames on the support platform extend out of the pipe orifices of the guide pipes of the support platform and are erected at the upper end of the shear wall of the elevator shaft;
F. and D, repeating the steps C to D until the construction operation of the elevator shaft on the whole floor is completed.
Compared with the prior art, the invention has the technical effects that: above-mentioned construction tower crane platform device is when actual construction operation, at first the first floor elevartor shaft to the building is under construction, the construction finishes, treat that the concrete strength of shear force wall comes the back, place foretell supporting platform hoist and mount in the shear force wall upper end of last floor elevartor shaft, make the shear force wall upper end at the terraced well is set up at the both ends of two support frame bodies, thereby realize the bracketing to supporting platform, utilize supporting platform can realize the support to elevartor shaft equipment or personnel, can ensure personnel's safety and the degree of safety of whole construction, and this efficiency of construction is high.
Drawings
FIG. 1 is a top view of an inner mold frame mated with an outer mold frame;
fig. 2 is a top view of a hoisted elevator shaft construction platform assembly;
figures 3 and 4 are front views of two states of the hoisted elevator shaft construction platform arrangement;
fig. 5 is a schematic structural view of the hoist-type elevator shaft construction platform device at the position of the upper end opening of the elevator shaft shear wall;
fig. 6 is a schematic structural view of the hoisting type elevator shaft construction platform device in the interior of the elevator shaft shear wall.
Detailed Description
The invention is further described with reference to fig. 1 to 6:
the hoisting type elevator shaft construction platform device comprises a supporting platform 10, wherein at least two supporting frame bodies 20 are arranged on the supporting platform 10, the rod lengths of the two supporting frame bodies 20 are parallel to the supporting plane of the supporting platform 10 and are connected with each other through supporting springs 30, two ends of the two supporting frame bodies 20 extend out of two sides of the supporting platform 10, the two supporting frame bodies 20 are connected with a stretching mechanism, and the stretching mechanism drives the two supporting frame bodies 20 to move oppositely and enables two ends of the supporting frame bodies 20 to be far away from the upper end face of an elevator shaft shear wall;
as shown in fig. 5 and fig. 6, when the construction tower crane platform device is actually used for construction, firstly, construction is performed on a first-layer elevator shaft of a building, after the construction is completed, and after the strength of concrete of a shear wall is increased, the support platform 10 is placed at the upper end of the shear wall of the elevator shaft at the bottom layer, so that two ends of two support frame bodies 20 are erected at the upper end of the shear wall of the elevator shaft, and the support of the support platform 10 is realized, support of construction tools, materials and personnel of the elevator shaft can be realized by using the support platform 10, the safety of the personnel and the safety of the whole construction can be ensured, and the construction efficiency is high;
after the concrete of the elevartor shaft shear wall on construction layer condenses to behind the certain intensity of concrete, utilize tension mechanism to make and remove in opposite directions between two support frame bodies 20, and make supporting spring 30 compress, thereby make the tip compression of two support frame bodies 20, start hoisting machine and construct, make supporting platform 10 along the elevartor shaft rebound, and remove the shear wall upper end of upper story elevartor shaft, prepare the construction of the shear wall of this layer of elevartor shaft.
As a preferred scheme of the present invention, as shown in fig. 3 and 4, the two support frame bodies 20 are slidably disposed in a guide tube of the support platform 10, the tube length direction of the guide tube is horizontal, the support platform 10 is connected with a hoisting mechanism, and the hoisting mechanism drives the support platform 10 to move up and down in the elevator shaft;
the two support frame bodies 20 are slidably disposed in the guide pipes of the support platform 10, and the guide pipes are used to slidably guide the two support frame bodies 20, so that the two support frame bodies 20 can only slide along the direction defined by the length of the guide pipes, and in actual construction work, when the support platform 10 needs to be moved upward, the ends of the two support frame bodies 20 move toward each other, so that the support springs 30 contract and move upward along the inner wall of the elevator shaft at the second floor or higher floor.
Furthermore, the stretching mechanism comprises pull rods 41 respectively arranged on the two support frame bodies 20 in a hinged manner, hinged shafts of the two pull rods 41 are horizontal and vertical to the length direction of the two support frame bodies 20, the other ends of the two pull rods 41 are hinged with two connecting rods 42, a four-bar mechanism is formed between the two connecting rods 42 of the two pull rods 41, and a lifting rope of the lifting mechanism is connected with the hinged point of the two connecting rods 42;
foretell hoisting mechanism's lifting rope is connected with two connecting rod 42's pin joint, after the elevartor shaft shear force wall construction on place layer finishes, the in-process of lifting rope, make four connecting rod 42 warp, thereby make two pull rod 41 remove in opposite directions, and then make two support frame body 20 remove in opposite directions, and with the shear force wall tip separation of elevartor shaft, hoisting mechanism starts, with the upper end of supporting platform 10 lifting to the elevartor shaft shear force wall of higher one deck, and make the lifting rope loosen, two support frame body 20 reverse movement, make the upper end at elevartor shaft shear force wall set up to the tip of support frame body 20, and then carry out the construction of the elevartor shaft shear force wall on place layer.
Further, the support platform 10 beside the two ends of the two support frame bodies 20 is hinged with a roller bracket 51, a hinge shaft of the roller bracket 51 is parallel to a hinge shaft of the pull rod 41, a support roller 50 is installed at an overhanging end of the roller bracket 51, when the end parts of the two support frame bodies 20 extend out of the guide pipe of the support platform 10, the roller bracket 51 is in a vertical state, and when the end parts of the two support frame bodies 20 are flush with the pipe orifice of the guide pipe of the support platform 10, the roller bracket 51 is in a state of extending obliquely towards the two sides of the support platform 10;
as shown in fig. 5 and 6, the roller bracket 51 of the supporting roller 50 is hinged to the supporting platform 10, when the hoisting mechanism drives the supporting platform 10 to move upwards along the elevator shaft, the roller bracket 51 is in a state of extending obliquely towards two sides of the supporting platform 10, so that the rim of the supporting roller 50 abuts against the inner wall of the shear wall of the elevator shaft, a gap is isolated between the side surface of the supporting platform 10 and the inner wall of the shear wall of the elevator shaft, the surrounding side of the supporting platform 10 is prevented from contacting with the inner wall of the shear wall of the elevator shaft, the inner wall of the elevator shaft is scratched, and the supporting roller 50 is in rolling fit with the inner wall of the shear wall of the elevator shaft, which is also convenient for the hoisting mechanism to lift the supporting platform 10;
when the supporting platform 10 is lifted to the upper end position of the elevator shaft shear wall, the supporting frame bodies 20 on the two sides of the supporting platform 10 extend out of the guide pipes of the supporting platform 10 and are overlapped at the upper end pipe orifice of the elevator shaft shear wall, and at the moment, the roller support 51 is in a vertical state, so that the wheel rim of the supporting roller 50 is separated from the inner wall of the elevator shaft shear wall.
Specifically, a first bar-shaped hole 101 is formed in the supporting platform 10, the hole length direction of the first bar-shaped hole 101 is parallel to the length direction of the supporting frame bodies 20, the two supporting frame bodies 20 are respectively provided with a connecting shaft 201, the connecting shaft 201 forms a hinge shaft of the pull rod 41 and extends out of the first bar-shaped hole 101, a second bar-shaped hole 511 is formed in one end, away from the supporting roller 50, of the roller bracket 51, the second bar-shaped hole 511 is parallel to the length direction of the roller bracket 51, and the extending end of the connecting shaft 201 is slidably arranged in the second bar-shaped hole 511;
the four-bar linkage mechanism and the connecting shaft 201 are matched with the first bar-shaped hole 101 and the second bar-shaped hole 511, the lifting rope lifts the four-bar linkage mechanism to act, and when the two support frame bodies 20 move towards each other, the roller support 51 is linked to be in a state of extending towards two sides of the support platform 10 in an inclined manner, so that the rim of the support roller 50 is abutted against the inner wall of the shear wall of the elevator shaft, when the support platform 10 is lifted to the upper end of the shear wall of the elevator shaft, under the action of elastic resetting force of the support spring 30, two ends of the two support frame bodies 20 extend out of the pipe orifices of the guide pipes and are erected at the upper end of the shear wall of the elevator shaft, and in the process that the two support frame bodies 20 extend out of the pipe orifices of the guide pipes, the roller linkage support 51 is in a vertical state, so that the rim of the support roller 50 is separated from the inner wall of the shear wall of the elevator shaft.
In order to stably support the supporting platform 10, the two supporting frame bodies 20 are arranged at intervals along the length direction of the supporting platform 10.
Some construction methods of the elevator shaft are introduced below, the construction method of the elevator shaft adopts the hoisting type elevator shaft construction platform device, and the construction method comprises the following steps:
A. leveling the ground to be constructed, arranging the inner mold frame 60 in the outer mold frame 70 to form a gap for filling concrete between the inner mold frame 60 and the outer mold frame 70, fixing the inner mold frame 60 and the outer mold frame 70 by using the connecting bolt 80, filling the gap between the inner mold frame 60 and the outer mold frame 70 with concrete, and removing the mold after the concrete is condensed to a set strength;
B. erecting a supporting platform 10 of the construction tower crane platform device at an opening at the upper end of a formed elevator shaft at the bottom layer, erecting two supporting frame bodies 20 of the supporting platform 10 at the upper end of a formed elevator shaft shear wall, and connecting a hoisting mechanism with the upper plate surface of the supporting platform 10;
C. arranging the inner mold frame 60 in the outer mold frame 70 on the upper plate surface of the support platform 10, so that a gap for filling concrete is formed between the inner mold frame 60 and the outer mold frame 70, fixing the inner mold frame 60 and the outer mold frame 70 by using the connecting bolt 80, filling concrete into the gap between the inner mold frame 60 and the outer mold frame 70, and removing the mold after the concrete is condensed to a set strength;
D. starting the hoisting mechanism, enabling the two support frame bodies 20 to be relatively close to each other by utilizing a hoisting rope, enabling the end parts of the two support frame bodies 20 to be flush with the pipe orifices of the guide pipes of the support platform 10, and enabling the support platform 10 to move upwards until the end parts of the two upper support frame bodies 20 of the support platform 10 extend out of the pipe orifices of the guide pipes of the support platform 10 and are erected at the upper end of the shear wall of the elevator shaft;
F. repeating the steps C to D until the construction operation of the elevator shaft of the whole floor is completed;
the removal of the inner formwork frame 60 and the outer formwork frame 70 of each elevator shaft can be carried out according to the strength of concrete, if the strength of the concrete is enough, the inner formwork frame 60 and the outer formwork frame 70 of the next elevator shaft can be removed in advance, and the removal of the inner formwork frame 60 and the outer formwork frame 70 of the next elevator shaft can be carried out according to the condition when the previous elevator shaft is constructed, so that the construction efficiency is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The elevator shaft construction method adopts a hoisting type elevator shaft construction platform device, the hoisting type elevator shaft construction platform device comprises a supporting platform (10), at least two supporting frame bodies (20) are arranged on the supporting platform (10), the rod lengths of the two supporting frame bodies (20) are parallel to the supporting plane of the supporting platform (10) and are connected through supporting springs (30), two ends of the two supporting frame bodies (20) extend out of two sides of the supporting platform (10), the two supporting frame bodies (20) are connected with a stretching mechanism, the stretching mechanism drives the two supporting frame bodies (20) to move oppositely, and two ends of the supporting frame bodies (20) are far away from the upper end face of an elevator shaft shear wall;
the two support frame bodies (20) are arranged in a guide pipe of the support platform (10) in a sliding mode, the pipe length direction of the guide pipe is horizontal, the support platform (10) is connected with a hoisting mechanism, and the hoisting mechanism drives the support platform (10) to be located in an elevator shaft to move up and down;
the stretching mechanism comprises pull rods (41) which are respectively arranged on the two support frame bodies (20) in a hinged mode, hinged shafts of the two pull rods (41) are horizontal and vertical to the length direction of the two support frame bodies (20), the other ends of the two pull rods (41) are hinged with two connecting rods (42), a four-bar mechanism is formed between the two connecting rods (42) of the two pull rods (41), and a lifting rope of the lifting mechanism is connected with hinged joints of the two connecting rods (42);
the construction method comprises the following steps:
A. leveling a floor to be constructed, arranging an inner mold frame (60) in an outer mold frame (70) to form a gap for filling concrete between the inner mold frame (60) and the outer mold frame (70), fixing the inner mold frame (60) and the outer mold frame (70) by using a connecting bolt (80), filling the gap between the inner mold frame (60) and the outer mold frame (70) with concrete, and removing a mold after the concrete is solidified to a set strength;
B. erecting a supporting platform (10) of the construction tower crane platform device at an opening at the upper end of a formed elevator shaft at the bottom layer, erecting two supporting frame bodies (20) of the supporting platform (10) at the upper end of a formed elevator shaft shear wall, and connecting a hoisting mechanism with the upper plate surface of the supporting platform (10);
C. arranging an inner mold frame (60) in an outer mold frame (70) on the upper plate surface of a supporting platform (10), enabling the inner mold frame (60) and the outer mold frame (70) to form a gap for filling concrete, fixing the inner mold frame (60) and the outer mold frame (70) by utilizing a connecting bolt (80), filling the gap between the inner mold frame (60) and the outer mold frame (70) with concrete, and removing the inner mold when the concrete is solidified to a set strength;
D. starting a hoisting mechanism, enabling the two support frame bodies (20) to be relatively close to each other by using a hoisting rope, enabling the end parts of the two support frame bodies (20) to be flush with the pipe orifice of the guide pipe of the support platform (10), and enabling the support platform (10) to move upwards until the end parts of the upper two support frame bodies (20) of the support platform (10) extend out of the pipe orifice of the guide pipe of the support platform (10) and are erected at the upper end of the shear wall of the elevator shaft;
F. and D, repeating the steps C to D until the construction operation of the elevator shaft on the whole floor is completed.
2. The elevator hoistway construction method according to claim 1, characterized in that: articulated on supporting platform (10) of two support frame body (20) both ends sides is provided with gyro wheel support (51), the articulated shaft of gyro wheel support (51) is parallel with the articulated shaft of pull rod (41), supporting roller (50) are installed to the overhang end of gyro wheel support (51), when the stand pipe of supporting platform (10) is stretched out to the tip of two support frame bodies (20), gyro wheel support (51) present vertical state, when the tip of two support frame bodies (20) and the stand pipe mouth of pipe parallel and level of supporting platform (10), gyro wheel support (51) present the state of extending to the slope of supporting platform (10) both sides.
3. The elevator hoistway construction method according to claim 2, wherein: be provided with first bar hole (101) on supporting platform (10), the hole length direction of first bar hole (101) is parallel with the length direction who supports support body (20), two are provided with connecting axle (201) on supporting support body (20) respectively, connecting axle (201) constitute the articulated shaft of pull rod (41) and stretch out first bar hole (101), the one end that supporting roller (50) were kept away from in gyro wheel support (51) is provided with second bar hole (511), second bar hole (511) is parallel with gyro wheel support (51) length direction, the end that stretches out of connecting axle (201) slides and sets up in second bar hole (511).
4. The elevator hoistway construction method according to claim 3, wherein: two groups of support frame bodies (20) are arranged at intervals along the length direction of the support platform (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710353314.3A CN107013030B (en) | 2017-05-18 | 2017-05-18 | Hoisting type elevator shaft construction platform device and elevator shaft construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710353314.3A CN107013030B (en) | 2017-05-18 | 2017-05-18 | Hoisting type elevator shaft construction platform device and elevator shaft construction method |
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| CN107013030A CN107013030A (en) | 2017-08-04 |
| CN107013030B true CN107013030B (en) | 2022-12-06 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109763627A (en) * | 2019-03-13 | 2019-05-17 | 中国五冶集团有限公司 | A kind of construction of elevator shaft in high-rise building structure and construction method |
| JP2023501519A (en) * | 2019-11-12 | 2023-01-18 | インベンテイオ・アクテイエンゲゼルシヤフト | Mounting frame for displacement and fixation within the shaft |
| AU2020384257B2 (en) * | 2019-11-12 | 2024-05-09 | Inventio Ag | Mounting frame for displacing and fixing in a shaft |
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| CN205348728U (en) * | 2015-12-22 | 2016-06-29 | 中建六局第三建筑工程有限公司 | A promote formula operation platform bearing structure for in shaft |
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| FR2872841A1 (en) * | 2004-07-12 | 2006-01-13 | Fixator Soc Par Actions Simpli | PLATFORM SUPPORT DEVICE FOR ELEVATION OF LOADS OR PEOPLE ALONG A WORK |
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| CN107013030A (en) | 2017-08-04 |
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Denomination of invention: Hoisting type elevator shaft construction platform device and the construction method of the elevator shaft Effective date of registration: 20230816 Granted publication date: 20221206 Pledgee: Dongyang Branch of China Construction Bank Co.,Ltd. Pledgor: GESHAN CONSTRUCTION GROUP Co.,Ltd. Registration number: Y2023980052356 |
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