CN119142981A - Steel member hoisting device in limited space and construction method thereof - Google Patents
Steel member hoisting device in limited space and construction method thereof Download PDFInfo
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- CN119142981A CN119142981A CN202411443749.3A CN202411443749A CN119142981A CN 119142981 A CN119142981 A CN 119142981A CN 202411443749 A CN202411443749 A CN 202411443749A CN 119142981 A CN119142981 A CN 119142981A
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- Prior art keywords
- hoisting
- roof
- steel member
- pulley
- steel
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Classifications
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a steel member hoisting device with a limited space and a construction method thereof, which belong to the technical field of hoisting and comprise two groups of hoisting mechanisms, wherein the two groups of hoisting mechanisms are respectively positioned at two sides of a steel member, each hoisting mechanism comprises a winch, the winch is fixedly connected to a roof, a support assembly is arranged on the roof, each steering mechanism comprises a first steering pulley arranged on the roof and a second steering pulley arranged on the support assembly, the distance between each second steering pulley and the roof is not smaller than the height of the steel member, a steel wire rope on the winch sequentially passes through the first steering pulley and the second steering pulley and is connected with one side of the steel member, each force unloading mechanism comprises a connecting piece arranged on the top of a lower floor, the connecting piece is connected with the first steering pulley, a prestressed steel wire rope is arranged between the connecting piece and the side wall of the lower floor, and the prestressed steel wire rope is obliquely arranged. The invention can realize the hoisting of the large-span steel member in the limited space, and reduces the hoisting difficulty and the potential safety hazard.
Description
Technical Field
The invention relates to the technical field of hoisting, in particular to a steel member hoisting device in a limited space and a construction method thereof.
Background
In the hoisting construction process of the large-span steel member roof, the condition that the daylighting roof is positioned at the central position of a building is generally encountered, and under the condition, the traditional automobile crane cannot be constructed because of the excessive hoisting distance and the large steel beam weight, so that the increase of the tonnage of the automobile crane is uneconomical and the bearing capacity of the garage roof is limited. When the tower crane is used for hoisting construction, construction is inconvenient due to the reasons of construction period, hoisting weight and the like, high-altitude welding workload is large, and safety and quality cannot be effectively guaranteed. There is therefore a need for a safe, efficient and economical construction device for steel components in confined spaces.
Therefore, a steel member hoisting device with limited space and a construction method thereof are provided.
Disclosure of Invention
The invention aims to provide a steel member hoisting device in a limited space and a construction method thereof, and aims to solve or improve at least one of the technical problems.
The invention provides a steel member hoisting device with a limited space, which comprises two groups of hoisting mechanisms, wherein the two groups of hoisting mechanisms are respectively positioned at two sides of a steel member, and the hoisting mechanisms comprise:
the winch is fixedly connected to the roof, and a supporting component is arranged on the roof;
The steering mechanism comprises a first steering pulley arranged on the roof and a second steering pulley arranged on the supporting component, the distance between the second steering pulley and the roof is not smaller than the height of the steel member, and a steel wire rope on the winch sequentially passes through the first steering pulley and the second steering pulley and is connected with one side of the steel member;
The force unloading mechanism comprises a connecting piece arranged on the top of a lower floor, the connecting piece is connected with a first steering pulley, a prestress steel wire rope is arranged between the connecting piece and the side wall of the lower floor, and the prestress steel wire rope is obliquely arranged.
Preferably, the support assembly comprises a lifting mast fixedly connected to the roof, the lifting mast is in an inverted L shape, the second diverting pulley is arranged below a cross rod on the lifting mast, and the second diverting pulley is opposite to a connection point of a steel wire rope and a steel member on the winch in the vertical direction.
Preferably, the middle parts of two opposite sides of the steel member are respectively provided with a movable pulley, the second diverting pulley is opposite to the movable pulley in the vertical direction, and a steel wire rope on the winch lifts the steel member through the first diverting pulley, the second diverting pulley and the movable pulley.
Preferably, a first chain block is tensioned between one side, far away from the second steering pulley, of the lifting mast and the existing roof structure, and prestress is applied to the first chain block.
Preferably, the device is further provided with a balancing mechanism, the balancing mechanism comprises two balancing masts fixedly connected to the roof, the two balancing masts are symmetrically distributed on two sides of the lifting masts, the balancing masts are connected with the steel members through steel wires, and second hand-pulling blocks are arranged on the steel wires.
Preferably, the existing mechanism of the roof is provided with a fixed pulley, the fixed pulley and the first steering pulley are located at the same height, the axis of the fixed pulley is perpendicular to the roof, the axis of the first steering pulley is parallel to the roof, and a steel wire rope on the winch passes through the fixed pulley and then passes through the first steering pulley after being turned.
Preferably, the connecting piece comprises a steel plate arranged on the roof of the lower floor, a plurality of connecting columns are arranged on the base of the first steering pulley, and the connecting columns sequentially penetrate through the base of the first steering pulley, the roof of the lower floor and the steel plate and are locked through locking nuts.
Preferably, the included angle between the prestress wire and the side wall of the lower floor is not more than 45 degrees.
The steel member hoisting construction method in the limited space comprises the following steps:
S1, transporting parts of a steel member to the position below a hoisting point and assembling the parts;
S2, hoisting the support assembly to a roof installation position, and installing after correcting the position;
S3, installing a first diverting pulley and a second diverting pulley;
S4, installing a winch on the roof;
S5, installing the connecting piece on the roof of the lower floor and connecting the connecting piece with the first steering pulley, and installing a prestress steel wire rope between the connecting piece and the side wall of the lower floor;
And S6, connecting and hoisting the steel wire rope on the winch through the steering of the first steering pulley and the second steering pulley and the steel member.
The application discloses the following technical effects that a winch and supporting components are respectively arranged on two sides of a roof, a steel wire rope of the winch is connected with a steel member piece after passing through a first steering pulley and a second steering pulley, smooth lifting of the steel member piece is achieved, the distance between the second steering pulley and the roof is not smaller than the height of the steel member piece, so that the steel member piece can be lifted to the central position above the roof, the steel wire rope is horizontally converted into vertically after passing through the first steering pulley, the first steering pulley receives larger upward pulling force in the lifting process, and a force unloading mechanism is arranged, so that the prestress steel wire rope in the force unloading mechanism can provide a reaction force for the first steering pulley in the lifting process, the pulling force condition of the first steering pulley is reduced, the floor slab is prevented from being damaged, and the lifting safety is improved. The application can smoothly realize the hoisting of the large-span steel member in the limited space, and reduces the hoisting difficulty and the hoisting potential safety hazard.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of a lifting mast in accordance with the present invention;
FIG. 3 is a schematic view of a force-unloading mechanism according to the present invention;
Fig. 4 is a schematic structural view of the first chain block according to the present invention.
The steel member, the hoist, the lower floor roof, the first diverting pulley, the second diverting pulley, the prestressed wire rope, the hoisting mast, the movable pulley, the first hand-operated hoist, the balance mast, the fixed pulley, the steel plate, the connecting column and the locking nut are all arranged in the figure 1, the steel member, the hoist, the lower floor roof, the first diverting pulley, the second diverting pulley, the prestressed wire rope, the hoisting mast, the movable pulley, the first hand-operated hoist, the balance mast, the fixed pulley, the steel plate, the connecting column and the locking nut.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-4, the invention provides a steel member hoisting device with limited space and a construction method thereof, comprising two groups of hoisting mechanisms, wherein the two groups of hoisting mechanisms are respectively positioned at two sides of a steel member 1, and the hoisting mechanisms comprise:
The winch 2 is fixedly connected to a roof, and a supporting component is arranged on the roof;
The steering mechanism comprises a first steering pulley 4 arranged on the roof and a second steering pulley 5 arranged on the supporting component, the distance between the second steering pulley 5 and the roof is not smaller than the height of the steel member 1, and a steel wire rope on the winch 2 sequentially passes through the first steering pulley 4 and the second steering pulley 5 and is connected with one side of the steel member 1;
The force unloading mechanism comprises a connecting piece arranged at the bottom of a roof, namely on the roof 3 of a lower floor, the connecting piece is connected with a first steering pulley 4, a prestress wire rope 6 is arranged between the connecting piece and the side wall of the lower floor, and the prestress wire rope 6 is obliquely arranged;
The steel wire ropes of the windlass 2 are connected with the steel member 1 after being turned by the first turning pulley 4 and the second turning pulley 5 through the two sides of the roof, so that the steel member 1 can be smoothly lifted, the distance between the second turning pulley 5 and the roof is not smaller than the height of the steel member 1, the steel member 1 can be lifted to the central position above the roof, the steel wire ropes are turned from horizontal to vertical after being turned by the first turning pulley 4, the first turning pulley 4 receives larger upward pulling force in the lifting process, and the pre-stress steel wire ropes 6 in the force unloading mechanism can provide reactive force for the first turning pulley 4 in the lifting process through the force unloading mechanism, so that the pulling force condition of the first turning pulley 4 is reduced, the floor is prevented from being damaged, and the lifting safety is improved.
Further optimizing scheme, the supporting component includes the hoist and mount mast 7 of rigid coupling on the roofing, and hoist and mount mast 7 is the L type of inversion, installs second diverting pulley 5 below the horizontal pole on the hoist and mount mast 7, and second diverting pulley 5 is just to the tie point of wire rope and steel component 1 on the hoist engine 2 in the vertical direction.
In this embodiment, the lifting mast 7 uses HW300×300×10×15 steel as a main stress member, the lifting mast 7 is fixed on the steel beam support, the height is 2000mm, the lifting mast 7 is higher than the steel member 1 to be lifted, the lifting mast 7 is in an inverted L shape, so that the bottom can be fixed on the roof, and the connection point for installing the second steering pulley 5 can protrude out of the roof, namely, is positioned in a hollow position in the center of the roof, so that the connection point with the steel member 1 can be vertically distributed.
According to a further optimization scheme, movable pulleys 8 are respectively arranged in the middle of two opposite sides of the steel member 1, the second diverting pulleys 5 are opposite to the movable pulleys 8 in the vertical direction, and the steel wire ropes on the windlass 2 hoist the steel member 1 through the first diverting pulleys 4, the second diverting pulleys 5 and the movable pulleys 8.
The second diverting pulley 5 faces the movable pulley 8 in the vertical direction to realize vertical hoisting, and the first diverting pulley 4, the second diverting pulley 5 and the movable pulley 8 are respectively fixed on the roof, the hoisting mast 7 and the steel member 1 by adopting 13.5tD rings.
According to a further optimization scheme, a first chain block 9 is tensioned between one side, far away from the second diverting pulley 5, of the hoisting mast 7 and an existing roof structure, and prestress is applied to the first chain block 9.
The prestressing force applied by the first hand hoist 9 can be decomposed into vertical force and horizontal force, the horizontal force is perpendicular to the connecting line of the two balance masts 10, and in the hoisting process, the pulling force of the steel member 1 borne by the hoisting mast 7 is opposite to the prestressing force direction of the first hand hoist 9, so that the occurrence of overturning in the hoisting engineering of the hoisting mast 7 is prevented.
The further optimization scheme is further provided with a balancing mechanism, the balancing mechanism comprises two balancing masts 10 fixedly connected to the roof, the two balancing masts 10 are symmetrically distributed on two sides of the lifting mast 7, the balancing masts 10 are connected with the steel member 1 through steel wires, and the steel wires are provided with second hand-pulled hoists;
The balancing device consists of a balancing mast 10, steel wire ropes matched with the balancing mast 10 and a second hand-pulled hoist, the steel wire ropes on the four balancing devices are respectively connected with four corners of the steel member 1, the steel wire ropes on the balancing devices almost do not need to apply tension, and the steel wire ropes on the balancing devices and the steel wire ropes on the windlass 2 are synchronously retracted and released, so that the steel member 1 is prevented from overturning due to uneven gravity center in the hoisting process.
According to a further optimization scheme, a fixed pulley 11 is arranged on an existing mechanism of a roof, the fixed pulley 11 and a first steering pulley 4 are located at the same height, the axis of the fixed pulley 11 is perpendicular to the roof, the axis of the first steering pulley 4 is parallel to the roof, and a steel wire rope on a winch 2 passes through the first steering pulley 4 after being turned by the fixed pulley 11;
The fixed pulleys 11 are fixed with the existing structural columns of the roof by adopting the steel wire ropes with the diameter of 20mm, when the steel member 1 at one position is lifted, and the next steel member 1 is lifted, the lifting mast 7 and the first steering pulley 4 are required to be completely removed and then are installed at a new lifting position, and by arranging the fixed pulleys 11, the position of the winch 2 can be kept unchanged all the time, and no matter which position of the steel member 1 is lifted, the winch 2 is not required to be detached.
Further optimizing scheme, the connecting piece is including setting up the steel sheet 12 at lower floor's roof 3, is provided with a plurality of spliced poles 13 on the base of first steering pulley 4, and spliced pole 13 runs through the base of first steering pulley 4, lower floor's roof 3, steel sheet 12 in proper order and locks through lock nut 14.
Further optimizing scheme, the included angle between the prestress wire 6 and the side wall of the lower floor is not more than 45 degrees.
The steel member hoisting construction method in the limited space comprises the following steps:
s1, transporting parts of a steel member 1 to the position below a hoisting point and assembling the parts;
S2, hoisting the support assembly to a roof installation position, and installing after correcting the position;
s3, installing a first diverting pulley 4 and a second diverting pulley 5;
S4, installing the winch 2 on a roof;
s5, installing a connecting piece on the roof 3 of the lower floor and connecting the connecting piece with the first steering pulley 4, and installing a prestressed wire rope 6 between the connecting piece and the side wall of the lower floor;
and S6, the steel wire rope on the winch 2 is connected with the steel member 1 in a steering way through the first steering pulley 4 and the second steering pulley 5 and is hoisted.
In this embodiment, the following condition settings are set at the time of construction:
1. The invention is suitable for various limited spaces where the construction tower crane and the automobile crane cannot directly hoist and mount, including but not limited to steel structure hoisting in the area where the tower crane or the automobile crane cannot cover the central position of the structure, steel structure hoisting in the case where the tower crane or the automobile crane cannot be supported due to site reasons, long construction period, overhigh cost of the automobile crane and the like.
2. Before formally starting hoisting, all the components to be hoisted need to be transported to the position right below the hoisting position, and the assembly is completed according to the plan.
3. All operators participating in hoisting need to carry out technical engagement, so that each post is ensured to be familiar with the working content of the operator in the hoisting process.
4. All the equipment (equipment) for hoisting is inspected to be qualified, the mechanical equipment needs to have complete maintenance record, and the test operation is free from abnormality.
5. The (environment) hoisting is good in weather on the same day, and bad weather such as rain and snow, hail, strong wind, strong fog and the like is avoided. The hoisting area is closed and managed, irrelevant personnel cannot enter the closed area, and any irrelevant equipment and materials are located in part of the hoisting area.
The construction steps are as follows:
1. And (construction preparation) carrying out comprehensive multi-scale measurement on the steel structure installation area by adopting a lycra total station TS06Plus2-R500, wherein the measurement data comprises the information of the x axis, the y axis and the z axis of each stress base to form a space coordinate network of a final steel structure installation support, and the space coordinate network is used for deepening design and processing of steel structure components, and the measurement error requirement is not more than 3mm.
2. And (the steel member 1 is in place), transporting the parts of the steel member 1 to the position below the hoisting point one by adopting a forklift with the weight of 2.5t/5.0t, assembling the steel member 1 below the hoisting position, welding and assembling each part by adopting carbon dioxide gas shielded welding, carrying out quality inspection and acceptance according to the steel structure engineering construction quality inspection and acceptance Standard GB50205-2020, signing the stroke inspection and acceptance records of each side after the inspection and acceptance is qualified, carrying out fire-proof coating construction after the welding is qualified, and forming the fire-proof coating construction inspection and acceptance records.
3. (Installation of the hoisting mast 7) the hoisting mast 7 is hoisted to the roof installation support by adopting a 300kg type small winch, and is welded and fixed after being manually matched and corrected by an operator, so that all fixed welding seams are required to be fully welded, and the height of the welding seams is not less than 10mm. After the welding of the lifting mast 7 is finished, the lifting mast 7 and the existing roof structure are tied by adopting a 20mm diameter steel wire rope and a 2t/2 type chain block, and prestress not smaller than 1t is applied.
4. (Installation of the balance mast 10) a small balance mast 10 is installed on each of the left and right sides of the hoisting mast 7, the installation mode and the requirement of the balance mast 10 are the same as those of the hoisting mast 7, and the balance mast 10 is used for keeping the balance of the steel member 1 in the hoisting process without being tied with a structure.
5. The first steering pulley 4, the second steering pulley 5 and the movable pulley 8 are respectively fixed on the roof, the hoisting mast 7 and the steel member 1 by adopting 13.5tD type rings, the fixed pulley 11 is fixed with the existing structural column by adopting the steel wire rope 3 with the diameter of 20mm, and each pulley block is required to be fixed reliably and rotate smoothly.
6. (Installation of the hoist 2) in this case, the hoist 2 is a 5t type hoist, and the total lifting capacity should be taken into consideration not less than 1.5 times of the lifting load during the selection, and should be appropriately increased according to the increase of the lifting load. The winch needs to be provided with a complete equipment nameplate and a complete maintenance record, and is inspected to be free of abnormality before formally starting. The hoist 2 is fixed on the structural floor by adopting a chemical anchor bolt/split bolt, so that the hoist can not move in the use process.
7. The structural floor slab at the first turning pulley 4 is subjected to huge tension, and a force unloading device is added for preventing the floor slab from being damaged. The steel plates 12 are fixed on the structural floor by 300 x 10, the next floor is fixed on a column or a wall surface by adopting a 16mm prestressed steel wire rope 6, and the prestress of not less than 1t is applied by adopting a 2t/2 chain block.
8. Before (formal hoisting), checking each device and intersecting the bottom of the personnel, lifting by 200mm in advance, checking that each mechanism works normally, lifting the hoisting continuously until the hoisting is 500mm away from the finishing surface, welding and fixing after the hoisting is in place, and fixing the rear detachable hoisting device.
9. The first steering pulley 4, the hoisting mast 7, the force unloading mechanism and the movable pulley 8 are removed, the next hoisting point of the transfer support is installed, and the next set of components is started to be hoisted.
The invention has the advantages of safe and high hoisting safety of the steel structural member, high speed, good accessory turnover and obvious economic benefit.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. The steel member hoisting device with the limited space is characterized by comprising two groups of hoisting mechanisms, wherein the two groups of hoisting mechanisms are respectively positioned at two sides of a steel member (1), and the hoisting mechanisms comprise:
the winch (2) is fixedly connected to a roof, and a supporting component is arranged on the roof;
The steering mechanism comprises a first steering pulley (4) arranged on a roof and a second steering pulley (5) arranged on the supporting component, the distance between the second steering pulley (5) and the roof is not smaller than the height of the steel member (1), and a steel wire rope on the winch (2) sequentially passes through the first steering pulley (4) and the second steering pulley (5) and is connected with one side of the steel member (1);
the force unloading mechanism comprises a connecting piece arranged on the roof (3) of the lower floor, the connecting piece is connected with a first steering pulley (4), a prestress wire rope (6) is arranged between the connecting piece and the side wall of the lower floor, and the prestress wire rope (6) is obliquely arranged.
2. The steel member hoisting device for the limited space according to claim 1, wherein the supporting component comprises a hoisting mast (7) fixedly connected to a roof, the hoisting mast (7) is in an inverted L shape, the second diverting pulley (5) is arranged below a cross rod on the hoisting mast (7), and the second diverting pulley (5) is opposite to a connection point of a steel wire rope on the hoist (2) and the steel member (1) in the vertical direction.
3. The steel member hoisting device for the limited space according to claim 2, wherein the movable pulleys (8) are respectively arranged in the middle parts of two opposite sides of the steel member (1), the second diverting pulleys (5) are opposite to the movable pulleys (8) in the vertical direction, and the steel wire ropes on the hoisting machine (2) hoist the steel member (1) through the first diverting pulleys (4), the second diverting pulleys (5) and the movable pulleys (8).
4. The steel member hoisting device for the limited space according to claim 2, wherein a first chain block (9) is tensioned between one side of the hoisting mast (7) far away from the second diverting pulley (5) and the existing roof structure, and prestress is applied to the first chain block (9).
5. The steel member hoisting device in the limited space according to claim 1, wherein the device is further provided with a balancing mechanism, the balancing mechanism comprises two balancing masts (10) fixedly connected to a roof, the two balancing masts (10) are symmetrically distributed on two sides of the hoisting mast (7), the balancing masts (10) are connected with the steel member (1) through steel wires, and second hand-pulling blocks are arranged on the steel wires.
6. The hoisting device for the steel member (1) in the limited space according to claim 1 is characterized in that a fixed pulley (11) is arranged on an existing mechanism of a roof, the fixed pulley (11) and the first steering pulley (4) are located at the same height, the axis of the fixed pulley (11) is perpendicular to the roof, the axis of the first steering pulley (4) is parallel to the roof, and a steel wire rope on the winch (2) passes through the first steering pulley (4) after being turned by the fixed pulley (11).
7. The steel member hoisting device for the limited space according to claim 1, wherein the connecting piece comprises a steel plate (12) arranged on the lower floor roof (3), a plurality of connecting columns (13) are arranged on the base of the first steering pulley (4), and the connecting columns (13) sequentially penetrate through the base of the first steering pulley (4), the lower floor roof (3) and the steel plate (12) and are locked through locking nuts (14).
8. The steel member hoisting device with limited space according to claim 1, wherein the included angle between the prestressed wire rope (6) and the side wall of the lower floor is not more than 45 degrees.
9. A method for hoisting and constructing a steel member in a limited space, using the device for hoisting and constructing a steel member in a limited space according to claim 1, comprising the steps of:
s1, transporting parts of a steel member (1) to the lower part of a hoisting point and assembling the parts;
S2, hoisting the support assembly to a roof installation position, and installing after correcting the position;
s3, installing a first diverting pulley (4) and a second diverting pulley (5);
s4, installing a winch (2) on the roof;
S5, installing the connecting piece on the roof (3) of the lower floor and connecting the connecting piece with the first steering pulley (4), and installing a prestress steel wire rope (6) between the connecting piece and the side wall of the lower floor;
And S6, connecting and hoisting the steel wire rope on the winch (2) with the steel member (1) through the steering of the first steering pulley (4) and the second steering pulley (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411443749.3A CN119142981A (en) | 2024-10-16 | 2024-10-16 | Steel member hoisting device in limited space and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411443749.3A CN119142981A (en) | 2024-10-16 | 2024-10-16 | Steel member hoisting device in limited space and construction method thereof |
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| CN109081247A (en) * | 2018-10-31 | 2018-12-25 | 中国冶集团有限公司 | A kind of hanging method of vestibule large-span steel girder |
| WO2021052142A1 (en) * | 2019-09-19 | 2021-03-25 | 中建科工集团有限公司 | Cable-supported large-span structure and construction method therefor |
| CN113180965A (en) * | 2021-05-28 | 2021-07-30 | 李崇文 | Nursing auxiliary device |
| CN117905285A (en) * | 2023-12-18 | 2024-04-19 | 中建三局集团有限公司 | Construction method of high-rise building steel structure and building material hoisting mechanism thereof |
| CN221275037U (en) * | 2024-06-06 | 2024-07-05 | 河南省豫东起重建筑设备有限公司 | Crane lifting mechanism with anti-collision protection device |
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Application publication date: 20241217 |