CN108560927B - Steel rib column hoisting system and use method thereof - Google Patents

Abstract

The invention discloses a hoisting system of a steel rib column and a using method thereof. The technical scheme is characterized by comprising a sliding track, a gantry crane device, a turntable, a transportation power device, at least two transportation trolleys and at least two jacking devices. The starting end of the sliding track is positioned at the periphery close to the building, and the terminal of the sliding track extends to the mounting position of the steel rib column; the transportation power device drives the transportation trolley to carry the steel rib column to move along the sliding track; the jacking device is matched with the rotary table for use, so that the steering of the steel rib column is realized; finally, the steel skeleton column transported to the installation position is lifted by the gantry crane device and installed at the preset position. By adopting the technical scheme, the number of large-scale tower cranes can be reduced, the arrangement of the tower cranes is optimized, the construction cost is effectively reduced, and meanwhile, the risk of tower grouping operation is effectively reduced.

Description

A hoisting system for a steel frame column and a method of using the same

technical field

The invention relates to the installation of steel frame columns, in particular to a hoisting system for steel frame columns.

Background technique

Steel-reinforced concrete column refers to a new type of structural column in which the steel-reinforced concrete column is placed in the concrete column to enhance the bearing capacity of the concrete column. The cross-sections of commonly used steel columns are cross-shaped and square-tube-shaped.

Steel-reinforced concrete columns have the advantages of high strength, small cross-sectional size of components, strong grip with concrete, saving concrete, increasing the use space, effectively improving the bearing capacity of components, and reducing the axial compression ratio of components, so they are often used in large buildings. in the structure.

At present, the hoisting of steel-frame columns is mainly carried out by tower cranes. The tower crane mainly includes a tower body that is erected and fixed on the ground and a horizontal boom located on the top of the tower body. The boom is installed with a hook that can move along the length of the boom. After the hook lifts the steel column from the ground, it moves to the position to be installed.

The maximum weight that the tower crane can lift is related to the vertical distance between the hook and the tower body. The farther the hook is from the tower body, the smaller the maximum weight that can be lifted. When the weight of the steel-frame column is large (for example, more than 10 tons), the radius of the range that the tower crane can hoist will be much smaller than the length of the boom. At this time, it is necessary to set up the tower cranes in an encrypted manner to reduce the distance between two adjacent tower cranes. However, the density of tower cranes is high, and the boom coverage of different tower cranes will overlap a lot, which greatly increases the risk of group tower operation and easily causes accidents.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a hoisting system for steel frame columns, which can reduce the number of large tower cranes, optimize the layout of tower cranes, effectively reduce construction costs, and effectively reduce the risk of group tower operations.

Another object of the present invention is to provide a method for using a hoisting system for a steel frame, by which the horizontal transportation and installation of the steel frame can be flexibly and quickly realized, and the operation is simple and efficient.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

A hoisting system for a steel frame column includes a sliding track, a gantry crane, a turntable, a transport power device, at least two transport trolleys and at least two jacking devices; the sliding track is horizontally laid at the same place where the steel frame column needs to be installed. On one floor, the starting end of the sliding track is located near the periphery of the building, and the end of the sliding track extends to the installation position of the steel column; a transport trolley is placed on the sliding track, and the transport power device drives the transport trolley along the sliding track. The sliding track moves, and a jacking device is installed on each transport trolley, which can lift the steel column; the sliding track is provided with a corner, the turntable is installed at the corner of the sliding track, and the steel column is When the center moves to the corner, the turntable located just below the center of the steel frame drives the steel frame to rotate to realize the steering of the steel frame; the gantry crane is fixed on the floor panel next to the installation position of the steel frame, and the gantry crane will be transported to the installation position The steel column is suspended and installed in the predetermined position.

By adopting the above technical solution, the number of large tower cranes can be reduced, the arrangement of the tower cranes is optimized, the construction cost is effectively reduced, and the risk of group tower operation is effectively reduced.

Preferably, the turntable includes a bearing plate and a plurality of rollers arranged on the same side of the bearing plate, the plurality of rollers are distributed in a circle and equiangular, and the rollers are rotatably supported on the bearing plate by a roller, and the rollers are rotatably supported on the bearing plate. Point to the center of the circle formed by the multiple rollers.

By adopting the above technical solution, the turntable can only rotate around its own axis without displacement in the horizontal direction, which is safer when used for steering the steel-frame column.

Preferably, the supporting plate is circular, and the circle formed by the plurality of rollers is concentric with the supporting plate.

By adopting the above technical solution, the installation and positioning of the roller is facilitated.

Preferably, the sliding rail includes two parallel sliding rails, and the two sliding rails are connected by a plurality of fixed beams.

By adopting the above technical solution, the sliding rail frame formed by the connection of the fixed beams makes the installation of the sliding rail more convenient and the overall stability is better.

Preferably, the transport trolley includes a frame, a pulley and a limit plate arranged at the bottom of the frame; the pulley can roll on the slide rail; the limit plate is located outside the pulley, and its bottom extends to the side of the slide rail to define the transport trolley Only move along the length of the rail.

By adopting the above technical solution, it is ensured that the transport trolley will not fall off the slide rail during the moving process.

Preferably, the jacking device is a jack.

By adopting the above technical scheme, the operation is simple, and the construction site is convenient to obtain materials.

Preferably, the sliding track is horizontally laid on the floor panel of the same floor where the steel-framed column needs to be installed.

By adopting the above technical solution, when the construction of the floor panel has been completed, the sliding track is more stable on the floor panel, and the installation is more convenient.

Preferably, it also includes a plurality of support frames, the support frame includes two vertical rods and a connecting beam; the two vertical rods are fixed on the ground in parallel, and the connecting beam is fixed in the middle of the two vertical rods and is located at the top of the vertical rods Position; the sliding track is laid horizontally on the connecting beam of the support frame and on the concrete beam on the bottom floor of the floor where the steel frame needs to be installed.

By adopting the above technical solutions, when the floor slab is not finished construction, the horizontal transportation problem of the steel column can be solved by using the support frame solution.

Preferably, the gantry hoisting device includes a gantry frame and an electric hoist arranged on the top of the gantry frame; the transportation power device is a plurality of hoists fixed on the floor panel, and the hoists are installed on the sliding surfaces of the steel frame columns in each advancing direction. To move the end of the track, the hoist includes a wire rope, and one end of the wire rope is connected to the transport trolley.

By adopting the above technical scheme, the electric hoist is easy to operate; the hoist as the transport power can control the moving speed to ensure the transport safety of the steel frame.

A method of using a hoisting system for a steel frame column, comprising the following steps:

S1. Install two trolleys on the sliding track, move to the starting end of the sliding track near the periphery of the building, and adjust the distance between the two trolleys;

S2. Hoist the steel frame to two transport trolleys;

S3. The transport power device drives the transport trolley to move forward along the sliding track;

S4. When the center of gravity of the steel column moves to the center of the corner of the sliding track, stop moving, use the jacking device installed on the transport trolley to lift the steel column, and set up a steel plate on the sliding track at the corner. Place the turntable on the steel plate, and make the rotation axis of the turntable coincide with the center of gravity of the steel column;

S5. The jacking device falls back so that the steel column falls on the upper surface of the turntable;

S6, manually or mechanically drive the turntable to rotate, so that the steel column rotates to the same direction as the sliding track in the other direction;

S7. Install a transport trolley below both ends of the steel frame on the sliding track in the other direction, and use the jacking device on the transport trolley to jack up the steel frame;

S8. Take out the turntable and the steel plate, and drop the steel frame back to the transport trolley;

S9. The transport trolley moves forward, and steps S4 to S8 are repeated until the steel frame moves to the hoisting position;

S10. The gantry crane lifts the steel frame column and installs it at the predetermined position.

By adopting the above technical solution, the method can flexibly and quickly realize the horizontal transportation and installation of the steel-frame column, and the operation is simple and efficient.

To sum up, the present invention has the following beneficial effects:

1. Reduce the investment of large tower cranes, optimize the layout of tower cranes, and effectively reduce the cost of construction;

2. Effectively reduce the risk of group tower operation;

3. Compared with the hoisting method of tower crane, this scheme does not need to consider the problem of mutual avoidance during group tower operation, thus greatly shortening the construction period;

4. Compared with the hoisting method of tower crane, this scheme has the advantage of being able to work at night;

5. The corresponding reduction of the tower crane foundation prevents the generation of a large amount of construction waste and reduces the pollution to underground resources.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the steel column hoisting system;

Figure 2 is a schematic diagram of the partial structure of the hoisting system when the steel-frame column is transported to the corner;

Fig. 3 is a schematic diagram of the structure of the sliding track and the transport trolley;

Figure 4 is a schematic diagram of the structure of the transport power plant;

FIG. 5 is a schematic view of the structure of the reserved slot for the slide rail at the corner;

Fig. 6 is the overall structure diagram of the turntable;

7 is a schematic diagram of the overall structure of the gantry crane;

Figure 8 is a structural diagram of the support frame erecting a slip track when only the concrete beam is completed below the steel column installation layer;

Figure 9 is an overall structural diagram of the support frame.

In the figure, 1, sliding track; 11, starting end; 12, terminal; 13, sliding rail; 14, fixed beam; 15, sleeper; 16, corner; 161, steel plate; 17, reserved seam; 2, gantry crane ; 21, Gantry; 211, Column; 212, Beam; 213, Column foot; 214, Expanded stress plate; 22, Electric hoist; 23, Wind rope; 3, Turntable; 31, Support plate; 32, Roller ;33, roller; 34, support plate; 4, transport power unit; 41, winch; 42, wire rope; 43, hook; 5, transport trolley; 51, frame; 52, pulley; 53, limit plate; 6. Jacking device; 61. Jack; 7. Support frame; 71. Upright pole; 72. Connecting beam; 73. Diagonal strut; 74. Bottom beam; 81. Floor slab; beam.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings. Wherein the same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "top", "bottom", "bottom" and "top" used in the following description refer to the Orientation, the words "inner" and "outer" refer respectively to directions toward or away from the geometric center of a particular component.

Example 1:

As shown in Figures 1 and 2, a hoisting system for a steel column includes a sliding track 1, a gantry hoisting device 2, a turntable 3, a transportation power device 4, at least two transportation trolleys 5 and at least two jacking devices 6 . The sliding track 1 is laid horizontally on the same floor where the steel column 82 needs to be installed, the starting end 11 of the sliding track 1 is located near the periphery of the building, and the end 12 of the sliding track 1 extends to the installation of the steel column 82 Location. The gantry hoisting device 2 is fixed on the floor panel 81 beside the installation position of the steel frame column 82 , and the gantry hoisting device 2 hoists the steel frame column 82 transported to the installation position and installs it at a predetermined position.

When in use, the steel frame 82 is first hoisted from the periphery of the building to the transport trolley 5 on the sliding track 1; the transport trolley 5 moves the steel frame 82 to the vicinity of the installation position. Steering of the steel frame 82; finally, the steel frame 82 is hoisted and installed with the gantry hoisting device 2.

This scheme mainly reduces the number of large tower cranes, optimizes the layout of tower cranes, effectively reduces the construction cost, and effectively reduces the Risk of tower operation. Compared with the hoisting method of tower crane, this scheme does not need to consider the mutual avoidance problem during group tower operation, thus greatly shortening the construction period and further reducing the total construction cost. In addition, when the construction period is tight, this construction method can also perform sliding and hoisting operations at night, which can further shorten the construction period compared with the tower crane hoisting method. Moreover, the corresponding reduction of the tower crane foundation prevents the generation of a large amount of construction waste and reduces the pollution to the underground resources.

This scheme is mainly suitable for projects with large overall span of the building, heavy single component of steel frame 82 and limited lifting capacity in the area covered by tower cranes, especially suitable for each building with multiple core tubes and steel frame 82 distributed locally Centralized, overall decentralized building structure. In the range that the tower crane cannot cover, this scheme is used to hoist the steel frame column, thus forming a comprehensive hoisting scheme, improving the operation efficiency and reducing the total construction cost.

As shown in FIG. 3 , the sliding rail 1 includes two parallel sliding rails 13 , and the two sliding rails 13 are connected by a plurality of fixing beams 14 . The material of the slide rail 13 can be 12# I-beam, and the distance between two parallel I-beams can be 1.4m. The transverse fixing beams 14 can be 12# channel steel, and are arranged at equal intervals of 800 mm along the length direction of the sliding rails 13 , and both ends of the fixing beams 14 are welded with the sliding rails 13 . The sliding track 1 is laid horizontally on the floor panel 81 of the same floor where the steel frame column 82 needs to be installed. In order to prevent the sliding track 1 from damaging the floor panel 81 , sleepers 15 can be laid under the sliding track 1 .

As shown in FIG. 3 , a transport trolley 5 is placed on the sliding track 1 , and the transport trolley 5 includes a frame 51 and a pulley 52 located at the bottom of the frame 51 . The frame 51 of the transport trolley 5 can be welded by 10# I-beam and L70 angle steel. The two ends of the two I-beams are erected on the two slide rails 13, the two I-beams are parallel to each other, and are supported and fixed by a plurality of angle steels in the middle. The bottom four corners of the transport trolley 5 are provided with pulleys 52 , and the pulleys 52 can roll on the slide rails 13 . In order to limit the movement of the transport trolley 5 in the direction perpendicular to the slide rail 13 , limit plates 53 are welded to the four corners of the frame 51 . Under the limitation of the limiting plate 53 , the transport trolley 5 can only move along the length direction of the slide rail 13 . The frame 51 of the transport trolley 5 is not limited to the above solution, and can be welded using steel materials commonly used in construction, as long as the frame 51 can bear the weight of the steel frame 82 .

As shown in FIG. 4 , the transportation power device 4 may be a plurality of winches 41 fixed to the floor panel 81 , and the winches 41 are installed at the ends of the sliding rails 1 in each advancing direction of the steel frame 82 . The hoist 41 includes a wire rope 42 , and one end of the wire rope 42 is connected with a hook 43 , and the hook 43 can be hooked on the transport trolley 5 .

As shown in FIG. 5 , in order to make the walking path of the steel column 82 more flexible, the sliding track 1 is provided with a corner 16 . In order to enable the limit plate 53 at the bottom of the transport trolley 5 to pass through the corner 16 smoothly, a reserved slot 17 for the limit plate 53 to pass through should be reserved at the intersection of the slide rails 13 in different directions at the corner 16. The width may be slightly larger than the thickness of the limiting plate 53, for example, it may be 1-2 cm.

Looking back at FIG. 2 , the turntable 3 is installed at the corner 16 of the sliding track 1, and when the center of the steel column 82 moves to the corner 16, the turntable 3 located just below the center of the steel column 82 drives the steel column 82 to rotate, realizing the steel column 82. Steering of the bone column 82;

As shown in FIG. 6 , the turntable 3 includes a supporting plate 31 and a plurality of rollers 32 arranged on the same side of the supporting plate 31 . The plurality of rollers 32 are distributed in a circle and equiangular, and the rollers 32 are rotatably supported by a roller 33 on the On the support plate 31 , the roller 33 points to the center of the circle formed by the plurality of rollers 32 . Both ends of the roller 33 are provided with support plates 34 , and the support plates 34 are vertically welded on the surface of the support plate 31 . The support plate 34 is perpendicular to the axial direction of the roller 33 , and the support plate 34 is provided with a shaft hole for the roller 33 to penetrate. The length of the rollers 32 is slightly smaller than the distance between the two support plates 34 to prevent too much friction between the rollers 32 and the support plates 34 when the turntable 3 rotates.

The supporting plate 31 can be square, and the center of the circle formed by the plurality of rollers 32 should be located at the center of the square supporting plate 31; The circles are concentric circles.

The rollers 32 at the bottom of the turntable 3 form a circle, and the movement direction of each roller 32 is along the tangential direction of the circle, thereby limiting the movement of the support plate 31 in the horizontal direction, and the support plate 31 can only surround a plurality of rollers 32 The center of the circle that makes up the circle rotates. In order to make the rotation smoother, the distance between two adjacent rollers 32 should not be too large. Preferably, the number of rollers 32 should be greater than eight.

When the turntable 3 is in use, the side provided with the rollers 32 is placed on a flat surface, which may be the flat surface of the steel plate 161 erected on the sliding track 1 .

Looking back at FIG. 2 , a jacking device 6 is installed on each transport trolley 5 , and the jacking device 6 can lift the steel column 82 . The jacking device 6 may be a plurality of jacks 61, such as two. The jack 61 should be arranged symmetrically along the axial plane of the steel frame to ensure the stability of the steel frame 82 when it is jacked up. The jack 61 lifts the steel frame 82 to a height of 100 mm, and the height of the height should meet the requirement of installing the turntable 3 in the middle of the steel frame 82 .

The steering process of the steel column 82 is described as follows:

As shown in Figure 2, first move the center (center of gravity) of the steel column 82 to the center of the corner 16; then use the jack 61 on the transport trolley 5 to lift the steel column 82 about 100mm; Lay a 2cm thick steel plate 161 on it; install the turntable 3 between the steel plate 161 and the steel frame 82, and make the axis of the turntable 3 coincide with the center of gravity of the steel frame 82; the jack 61 is relieved to make the steel frame 82 Fall on the turntable 3, at this time, the two ends of the steel frame 82 are suspended; use a crowbar or an inverted chain to rotate the turntable 3 in situ, so that the steel frame 82 rotates 90 degrees; Put the end into the transport trolley 5, place the jack 61 on the transport trolley 5, use the jack 61 to raise the steel frame 82 about 100mm, and pull out the steel plate 161 and the turntable 3. The steel column 82 that has completed the turning continues to move along the slide rail 13 .

As shown in FIG. 7 , the gantry crane 2 includes a gantry frame 21 and an electric hoist 22 arranged on the top of the gantry frame 21 . The gantry frame 21 is a flat steel frame, the column 212 can be a D219x6 round pipe, the beam 212 can be a box beam of 250x250x12mm, and the column foot 213 of the column 212 is provided with a φ600 circular plate with a thickness of 20mm. In order to protect the concrete structure of the floor panel 81 , a 2000×2000 mm enlarged stress-bearing plate 214 can be laid on the column foot 213 .

When installing the gantry crane, hoist the gantry frame 21 to just above the installation position of the steel frame column 82 , and then fix the column feet 213 of the upright column 212 with the embedded parts on the floor panel 81 . Four wind ropes 23, which can be D24 steel wire ropes, are tied from both ends of the beam 212 of the gantry frame 21 to the floor panel 81 (the floor panel is not shown), at an angle of 45 degrees, and set the initial tension, which can be 3T.

When lifting, the bottom end of the steel frame 82 is placed on a transport trolley 5 away from the gantry 21, the electric hoist hooks the traction point set on the upper end of the steel frame 82, the electric hoist 22 is started, and the steel frame 82 is slowly moved. hoist. After hoisting to a certain height, adjust the direction of the steel frame 82 so that it is opposite to the bottom embedded part or the bottom section of the steel frame 82 , and then slowly drop the steel frame 82 . After that, adjust and weld.

Embodiment 2:

As shown in FIG. 8 , the difference from the first embodiment is that the construction of the floor panel 81 within the scope of the sliding track 1 in the embodiment 1 has been completed, and when the floor panel 81 is not completed, only the lower concrete beam 83 is completed, The hoisting system also includes a plurality of support frames 7 . The sliding track 1 is laid horizontally on the connecting beam 72 of the support frame 7 and on the concrete beam 83 of the bottom floor of the floor to be installed with the steel frame.

As shown in FIG. 9 , the support frame 7 includes two vertical rods 71 and a connecting beam 72 ; the two vertical rods 71 are fixed on the ground in parallel, and the connecting beam 72 is fixed in the middle of the two vertical rods 71 and is located at the top of the vertical rod 71 Location. In order to make the support frame 7 have better stability in the direction along the sliding track 1, the support frame 7 is also provided with diagonal struts 73 and bottom beams 74, and the vertical rods 71, the diagonal struts 73 and the bottom beams 74 are welded to each other. Triangular structure. Among them, the vertical rod 71 and the bottom beam 74 can be made of 12# I-beam, and the diagonal strut 73 and the connecting beam 72 can be made of L70 angle steel.

The slide rail 13 is erected on the top surface of the vertical rod 71 of the support frame 7 or the upper surface of the connecting beam 72, as shown in FIG. Welded with the top surface of the pole 71 . Two brackets are arranged at equal intervals in each bottom room within the erection range of the horizontal transport track. During installation, the side of the support frame 7 provided with the diagonal struts 73 is located in the forward direction of the steel column 82; at the corner 16 of the track, the track bracket should be properly encrypted to strengthen the structure of the corner 16 and ensure that the steel column 82 is in the steering process. The stability of the mid-orbit.

Preferably, the length of the slide rail 13 is the same as the center distance between the two concrete beams 83 . The two slide rails 13 are arranged symmetrically along the center of the rail support frame 7. At the junction of the slide rail 13 and the concrete beam 83, vertical steel bars can be implanted on the upper surface of the concrete beam 83 as a longitudinal and lateral constraint of the rail. . The vertical reinforcement bars are located at the end of the slide rail 13 and on both sides of the end of the slide rail 13 . The top surface of the top connecting beam 72 of the track support or the top surface of the vertical rod 71 is at the same height as the top surface of the concrete beam 83 of the building, so as to ensure that the slide rail 13 is laid without slope.

In addition, the ground at the installation location of the track support frame 7 should be flat and the foundation should be firm. It is best to set it on the hardened ground. If the concrete is not hardened, drainage measures should be taken to prevent the foundation from soaking in water and softening.

Embodiment three:

Referring to Figure 1 and Figure 2, a method of using a hoisting system for a steel column includes the following steps:

S1. Install the two transport trolleys 5 on the sliding track 1, move to the starting end 11 of the sliding track 1 near the periphery of the building, and adjust the distance between the two transport trolleys 5 so that the steel skeleton column Both ends of 82 can be set up on two transport trolleys 5;

S2. Lift the steel frame 82 from the ground beside the building to the two transport trolleys 5 with a crane;

S3. The transportation power device 4 drives the transportation trolley 5 to move forward along the sliding track 1;

S4. When the center of gravity of the steel column 82 moves to the center of the corner 16 of the sliding track 1, stop moving, and use the jacking device 6 installed on the transport trolley 5 to jack up the steel column 82, and the sliding at the corner 16 A steel plate 161 is erected on the transfer track 1, the turntable 3 is placed on the steel plate 161, and the rotation axis of the turntable 3 is coincident with the center of gravity of the steel column 82;

S5, the jacking device 6 falls back, so that the steel column 82 falls on the upper surface of the turntable 3;

S6, manually or mechanically drive the turntable 3 to rotate, so that the steel column 82 rotates to the same direction as the sliding track 1 in the other direction;

S7, install the transport trolley 5 below both ends of the steel frame 82 on the sliding track 1 in the other direction, and use the jacking device 6 on the transport trolley 5 to jack up the steel frame 82;

S8, take out the turntable 3 and the steel plate 161, relieve the pressure of the jacking device 6, and drop the steel column 82 back to the transport trolley 5;

S9, the transport trolley 5 moves forward, and steps S4 to S8 are repeated until the steel frame 82 moves to the hoisting position;

S10, the gantry crane hoists the steel frame column 82 and installs it at a predetermined position.

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

Claims (9)

1. A hoist and mount system of reinforcing bar post which characterized in that:

the device comprises a sliding track (1), a gantry crane device (2), a turntable (3), a transportation power device (4), at least two transportation trolleys (5) and at least two jacking devices (6);

the sliding rail (1) is horizontally laid on the same floor where the steel rib column (82) needs to be installed, the starting end (11) of the sliding rail (1) is located at the periphery close to a building, and the terminal (12) of the sliding rail (1) extends to the installation position of the steel rib column (82);

the conveying trolley (5) is placed on the sliding track (1), the conveying power device (4) drives the conveying trolley (5) to move along the sliding track (1), each conveying trolley (5) is provided with a jacking device (6), and the jacking devices (6) can lift the steel rib columns (82);

the sliding rail (1) is provided with a corner (16), the turntable (3) is installed at the corner (16) of the sliding rail (1), and when the center of the steel rib column (82) moves to the corner (16), the turntable (3) located right below the center of the steel rib column (82) drives the steel rib column (82) to rotate, so that the steel rib column (82) is turned;

the gantry crane device (2) is fixed on a floor plate (81) beside the installation position of the steel rib column (82), and the gantry crane device (2) lifts the steel rib column (82) transported to the installation position and installs the steel rib column at a preset position;

the turntable (3) comprises a bearing plate (31) and a plurality of rollers (32) arranged on the same side of the bearing plate (31), the rollers (32) are distributed in a circular shape at equal angles, the rollers (32) are rotatably supported on the bearing plate (31) through a roller (33), and the roller (33) points to the circle center of the circular shape formed by the rollers (32).

2. The hoisting system of the steel skeleton column as recited in claim 1, wherein:

the bearing plate (31) is circular, and the circle formed by the rollers (32) and the bearing plate (31) are concentric circles.

3. The hoisting system of the steel skeleton column as recited in claim 1, wherein:

the sliding rail (1) comprises two parallel sliding rails (13), and the two sliding rails (13) are connected through a plurality of fixed beams (14).

4. The hoisting system of the steel skeleton column as recited in claim 3, wherein:

the transport trolley (5) comprises a trolley frame (51), and a pulley (52) and a limiting plate (53) which are arranged at the bottom of the trolley frame (51); the pulley (52) can roll on the sliding rail (13); the limiting plate (53) is positioned outside the pulley (52), and the bottom of the limiting plate extends to the side surface of the sliding rail (13) to limit the transport trolley (5) to move only along the length direction of the sliding rail (13).

5. The hoisting system of the steel skeleton column as recited in claim 1, wherein:

the jacking device (6) is a jack (61).

6. The hoisting system of the steel skeleton column as recited in claim 1, wherein:

the sliding rail (1) is horizontally laid on a floor plate (81) of the same floor where the steel skeleton columns (82) need to be installed.

7. The hoisting system of the steel skeleton column as recited in claim 1, wherein:

the device also comprises a plurality of support frames (7), wherein each support frame (7) comprises two upright rods (71) and a connecting beam (72);

the two upright posts (71) are fixed on the ground in parallel, and the connecting beam (72) is fixedly connected between the two upright posts (71) and positioned at the top ends of the upright posts (71);

the sliding rail (1) is horizontally laid on a connecting beam (72) of the support frame (7) and a concrete beam (83) of a bottom floor of a steel skeleton floor needing to be installed.

8. The hoisting system of the steel skeleton column as recited in claim 1, wherein:

the gantry crane device (2) comprises a gantry frame (21) and an electric hoist (22) arranged at the top of the gantry frame (21);

the transportation power device (4) is a plurality of winches (41) fixed on a floor plate (81), the winches (41) are installed at the ends of the sliding tracks (1) in each advancing direction of the steel rib column (82), each winch (41) comprises a steel wire rope, and one end of each steel wire rope is connected to the transportation trolley (5).

9. A using method of a hoisting system of a steel rib column is characterized in that: the method comprises the following steps:

s1, mounting the two trolleys on the sliding rail (1), moving the two trolleys to the starting end (11) of the sliding rail (1) close to the periphery of the building, and adjusting the distance between the two trolleys;

s2, hoisting the steel rib column (82) to two transport trolleys (5);

s3, the transportation power device (4) drives the transportation trolley (5) to move forwards along the sliding track (1);

s4, when the center of gravity of the steel rib column (82) moves to the center of the corner (16) of the sliding track (1), stopping moving, jacking the steel rib column (82) by using a jacking device (6) arranged on a transport trolley (5), erecting a steel plate (161) on the sliding track (1) at the corner (16), placing the turntable (3) on the steel plate (161), and enabling the rotating axis of the turntable (3) to coincide with the center of gravity of the steel rib column (82);

s5, the jacking device (6) falls back to enable the steel skeleton column (82) to fall on the upper surface of the turntable (3);

s6, manually or mechanically driving the turntable (3) to rotate, so that the steel rib column (82) rotates to the same direction as the sliding track (1) in the other direction;

s7, mounting a transport trolley (5) below two ends of the steel skeleton column (82) on the sliding track (1) in the other direction, and jacking the steel skeleton column (82) by using a jacking device (6) on the transport trolley (5);

s8, taking out the turntable (3) and the steel plate (161), and dropping the steel skeleton column (82) onto the transport trolley (5);

s9, the transport trolley (5) moves forwards, and the steps S4-S8 are repeated until the steel rib column (82) moves to the hoisting position;

and S10, hoisting the steel rib column (82) by using a gantry crane and installing the steel rib column at a preset position.

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